PERINI CORP
SC 13D, 1996-12-16
GENERAL BLDG CONTRACTORS - NONRESIDENTIAL BLDGS
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<PAGE>
 
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                                   -------------------------- 
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                                                   hours per response  14.90 
                                                   ---------------------------

                                  SCHEDULE 13D


                   Under the Securities Exchange Act of 1934
                           (Amendment No. ________)*


                              Perini Corporation
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                 Common  Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   713839108
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


 Alan J. Barton, Esq., Paul, Hastings, Janofsky & Walker, 555 S. Flower Street,
- --------------------------------------------------------------------------------
                   23rd Floor, Los Angeles, CA 90071-2371
- --------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
                                Communications)


                                  December 13, 1996
- --------------------------------------------------------------------------------
            (Date of Event which Requires Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].


NOTE: Six copies of this statement, including all exhibits, should be filed with
the Commission.  See Rule 13d-1(a) for other parties to whom copies are to be
sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 713839108                   13D                PAGE 2 OF   PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     
      The Union Labor Life Insurance Company

- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [X]**
                                                                (b) [X]**
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      SOURCE OF FUNDS
 4    
      00

- ------------------------------------------------------------------------------
      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT 
      TO ITEMS 2(d) OR 2(e)                                         [_]

 5

- ------------------------------------------------------------------------------
      CITIZENSHIP OF PLACE OR ORGANIZATION

 6    Maryland

- ------------------------------------------------------------------------------

                          SOLE VOTING POWER
                     7   
     NUMBER OF            712,770 Shares **
 
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      8
                          0
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     9    
    REPORTING             712,770 Shares **
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          10
                          0 **
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 11  
      712,770 Shares **

- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
12                  
 
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
13    
      12.702%

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
14
      CO

- ------------------------------------------------------------------------------
**See items 4 and 5
                     *SEE INSTRUCTION BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.
<PAGE>
 
ITEM 1.   SECURITY AND ISSUER.

          This statement on Schedule 13D relates to shares of the Common Stock,
$1.00 par value ("Common Shares") of Perini Corporation, a Massachusetts
corporation (the "Issuer") and also pertains to shares of Series B Cumulative
Convertible Preferred Stock, $1.00 par value (the "Preferred Shares"), of the
Issuer.  The address of the principal executive offices of the Issuer is 73 Mt.
Wayte Avenue, Framingham, Massachusetts 01701.

          The information set forth in the exhibits attached hereto is expressly
incorporated herein by reference and the response to each item of this statement
is qualified in its entirety by the provisions of such Exhibits.

ITEM 2.   IDENTITY AND BACKGROUND.

          This statement is being filed on behalf of The Union Labor Life
Insurance Company (referred to herein as the "Reporting Person"), which is a
wholly owned subsidiary of ULLICO Inc.  Reporting Person is an insurance company
incorporated in the State of Maryland, which is purchasing securities on behalf
of its Separate Account P ("Separate Account P"), a commingled fund available
for investment by qualified pension plans, and ULLICO Inc. is a corporation
incorporated in the State of Maryland.  Both Reporting Person and ULLICO Inc.
have their principal place of business and principal office at 111 Massachusetts
Avenue, N.W., Washington, D.C., 20001.  Reporting Person is engaged in the
principal business of insurance and financial services, and Separate Account P
is engaged in the principal business of investing in special situation equity
investments.  ULLICO Inc. is a holding company with subsidiaries and affiliates
engaged in the principal businesses of life, health, and property and casualty
insurance, investment services and third party benefits administration.

          The names of the executive officers and directors of Reporting Person
and ULLICO Inc., their citizenship and principal occupations are as set forth in
Exhibit 2.1 attached hereto.  All of the persons identified in Exhibit 2.1 have
their business address at 111 Massachusetts Avenue, N.W., Washington D.C.,
20001.

          To the best knowledge of Reporting Person, none of the persons
identified in Exhibit 2.1 has, during the last five years, been (a) convicted in
a criminal proceeding, or (b) a party to any civil proceeding as a result of
which it has been subject to a judgment, decree, final order enjoining future
violations of, or prohibiting or mandating activities subject to, federal or
state securities laws, or finding any violation in respect to such laws.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

          As described in Item 4, the Reporting Person has agreed, subject to
certain terms and conditions, to purchase Preferred Shares from the Issuer
which, at the time of issuance, will be convertible into Common Shares.  The
source of funds for the purchase of Preferred Shares will be funds provided by
the unit holders of Separate Account P.

ITEM 4.   PURPOSE OF TRANSACTION.

          The responses to Items 3, 5 and 6 are incorporated herein by this
reference.

          Reporting Person, on behalf of Separate Account P, has entered into a
Stock Assignment and Assumption Agreement dated as of December 13, 1996 (the
"Assignment Agreement"), with PB Capital Partners, L.P., a Delaware limited
partnership ("PB Capital"), and Issuer, under which PB Capital has assigned to
Reporting Person, and Reporting Person assumed, all of PB Capital's rights and
obligations relating to the purchase of between 32,500 and 37,500 Preferred
Shares pursuant to a Stock Purchase and Sale Agreement dated as of July 24, 1996
as amended by letter agreements dated August 21, 1996, September 16, 1996,
September 30, 1996 and October 9, 1996, and by the Second Amendment to Stock
Purchase Agreement dated as of November 8, 1996 (as amended, the "Stock Purchase
Agreement"), among PB Capital, Issuer and Richard C. Blum & Associates, L.P.
("RCBA"). A copy of the Assignment Agreement is attached hereto as Exhibit 4.1.
Copies of the Stock Purchase and Sale Agreement dated as of July 24, 1996 and
the Second Amendment to Stock Purchase Agreement dated as of November 8, 1996
are attached hereto as Exhibit 4.2.
<PAGE>
 
          Upon issuance, each Preferred Share will be convertible into
approximately 20.66 Common Shares (subject to adjustment for certain events
under anti-dilution provisions established by a Certificate of Vote of the Board
of Directors of Issuer under which the Preferred Shares are authorized).

          Under the Stock Purchase Agreement, PB Capital agreed to purchase from
Issuer 150,150 Preferred Shares.  The consummation of the purchase of these
Preferred Shares under the Stock Purchase Agreement (the "Transaction") will
lead to the election to the Issuer's Board of Directors of three individuals
designated by PB Capital, and membership of at least one of these three new
directors on each of the committees of the Board of Directors of Issuer, except
for a five person Executive Committee of the Board of Directors on which all of
three new directors will serve.  Also, as reflected in the Stock Purchase
Agreement, consummation of the Transaction will lead to the amendment of the
bylaws of Issuer to provide that no action of the Board of Directors on certain
matters may be taken without the prior favorable recommendation of the Executive
Committee and that the Executive Committee will oversee the chief executive
officer of the Issuer.  The consummation of the Transaction is subject to
certain significant contingencies set forth in the Stock Purchase Agreement,
including approval of the Transaction and bylaw amendment by the holders of
Common Shares of Issuer.

          Reporting Person acquired beneficial ownership of the Common Shares to
which this statement on Schedule 13D relates by virtue of entering into the
Assignment Agreement and thereby becoming a party to the Stock Purchase
Agreement. Upon issuance of the Preferred Shares that Reporting Person has
agreed to purchase, Reporting Person will acquire these Preferred Shares for
investment purposes. Reporting Person, on behalf of Separate Account P, has
entered into a Shareholders Agreement, dated as of December 13, 1996 (the
"Shareholders Agreement"), with PB Capital under which Reporting Person has
agreed to a five-year restriction on the transfer of the Preferred Shares it
acquires from Issuer (and the Common Shares issued upon the conversion of
Preferred Shares), except that in the event PB Capital proposes to sell or
distribute to its partners any Preferred Shares or Common Shares, Reporting
Person will have the right to participate in such sale or, in the case of such a
distribution, to sell Preferred Shares or such Common Shares on a pro rata
basis. A copy of the Shareholders Agreement is attached hereto as Exhibit 4.3.

          As a result of the Shareholders Agreement, Reporting Person and PB
Capital may be deemed to constitute a "group" within the meaning of Rule 13d-5
under the Securities Exchange Act of 1934, as amended (the "Exchange Act").
Pursuant to Rule 13d-4, the filing of this Statement shall not be construed as
an admission that Reporting Person is, for the purposes of Section 13(d) or
13(g) of the Exchange Act (or pursuant to Rule 16a-1(a)(1) thereunder), the
beneficial owner of any Common Shares that are beneficially owned by PB Capital.

          Reporting Person has been informed by PB Capital that pursuant to a
separate agreement, PB Capital will assign its rights and obligations under the
Stock Purchase Agreement with respect to the purchase of 23,300 shares of
Preferred Stock to The Common Fund for Non-Profit Organizations, a New York
corporation ("The Common Fund").

          Except as disclosed in this Item 4, Reporting Person and ULLICO Inc.
have no current plans or proposals which relate to or would result in any of the
events described in Items (a) through (j) of the instructions to Item 4 of
Schedule 13D.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

NOTE:  Information below regarding PB Capital and its beneficial ownership of
Preferred Shares and Common Shares has been obtained from the statements on
Schedule 13D as have been or may be filed under the Exchange Act by PB Capital.

       (a)   (i)   As of the date of the filing of this statement, based on
information provided to Reporting Person by the Issuer and by PB Capital, after
giving effect to the closing of the Transaction under the Stock Purchase
Agreement and the assignment by PB Capital to The Common Fund described in Item
4, (i) Reporting Person will beneficially own an aggregate of approximately
twenty two and nine hundred seventy seven one thousandths percent (22.977%) of
the total outstanding Preferred Shares, and PB Capital will beneficially own an
aggregate of approximately sixty one and five hundred five one thousandths
percent (61.505%) of the total outstanding Preferred Shares,
<PAGE>
 
and (ii) assuming exercise of the conversion privilege attendant to these
Preferred Shares, Reporting Person will beneficially own an aggregate of
approximately twelve and seven hundred two one thousandths percent (12.702%),
and PB Capital will beneficially own an aggregate of approximately twenty
eight and thirty one one thousandths percent (28.031%) of the outstanding Common
Shares. The number of shares and percentage of beneficial ownership of Common
Shares is based upon an assumed 4,898,648 Common Shares being outstanding on the
date hereof (as reported by the Issuer) and, in accordance with Rule 13d-
3(d)(1)(i), for each of Reporting Person and PB Capital that the number of
Common Shares and percentage of beneficial ownership assumes beneficial
ownership of the number of Common Shares underlying the Preferred Shares that
are beneficially owned by such holder.

          (ii)  As a result of the Shareholders Agreement, Reporting Person and
PB Capital may be deemed to constitute a "group" within the meaning of Rule 13d-
5 under the Exchange Act.  Based upon the assumptions appearing in paragraph
(a)(i) of this Item 5, if such group exists it would be deemed to beneficially
own an aggregate of approximately eighty four and four hundred eighty two one 
thousandths percent (84.482%) of the Preferred Shares and an aggregate of
approximately thirty four and eight hundred fifty three one thousandths percent 
(34.853%) of the outstanding Common Shares.

       (b) (i) Except as discussed in Item 4, the power to direct the
disposition and voting of the Shares held by Reporting Person is vested in its
officers.

          (ii) Except as discussed in Item 4, Reporting Person has been informed
by PB Capital that the power to direct the disposition and voting of the
Preferred Shares and Common Shares held by PB Capital is vested as follows:

          RCBA is the sole general partner of PB Capital.  Richard C. Blum &
Associates, Inc., a California corporation ("RCBA Inc."), is the sole general
partner of RCBA.  Richard C. Blum is the Chairman and a substantial Shareholder
of RCBA Inc.  Because of the foregoing organizational structure, each of PB
Capital, RCBA, RCBA Inc. and Richard C. Blum are beneficial owners of the
Preferred Shares and Common Shares owned directly by PB Capital.

          Ronald Tutor ("Tutor") has had discussions with RCBA about being one
of the investors in PB Capital, possibly serving as one of PB Capital's
designees to the Board of Directors of Issuer.  Tutor is the president of Tutor-
Saliba Corp., which is the owner of approximately 351,318 Common Shares or
approximately 7.4% of the outstanding Common Shares.  Tutor-Saliba Corp. has
sole voting and dispositive control over those shares and no voting or
dispositive control over the Preferred Shares or Common Shares owned by PB
Capital.  Although there is no formal agreement, written or oral, regarding the
acquisition, disposition or voting of the securities of the Issuer as between PB
Capital, Tutor or Tutor-Saliba Corp., PB Capital and Tutor expect that they will
be consulting with each other and thus they and Tutor-Saliba Corp. may, for some
purposes, be deemed to be members of a group with respect to the Issuer.  As
Chairman, director and a substantial shareholder of RCBA Inc., Richard C. Blum
might be deemed to be the beneficial owner of the securities beneficially owned
by RCBA Inc.

       (c)  Except as disclosed in Item 3, neither Reporting Person nor any
other person disclosed in response to Item 2 has effected any transactions in
the Preferred Shares or Common Shares in the past sixty days.

       (d)  Not applicable.

       (e)  Not applicable.

ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERTAKINGS OR RELATIONSHIPS WITH RESPECT TO
SECURITIES OF THE ISSUER.

          Reference is made to Item 4 for a description of the Assignment
Agreement, the Stock Purchase Agreement and the Shareholders Agreement.

          Under the Stock Purchase Agreement, for two years after the date of
closing of the Transaction, Reporting Person, PB Capital and RCBA have agreed
not to purchase any securities of Issuer, or securities convertible into or
exchangeable for such securities, except for:  securities purchased or exchanged
pursuant to the terms of the Stock Purchase Agreement, securities issued by the
Issuer pursuant
<PAGE>
 
to stock splits, stock dividends or recapitalizations, securities purchased by
any broker-dealer affiliate of Reporting Person, PB Capital or RCBA for the
account of any unaffiliated customer, securities issued pursuant to the exercise
of a warrant, option or other right pursuant to a distribution to stockholders
of Issuer or from Issuer directly, or securities issued pursuant to a business
combination between Issuer and an entity which is not an affiliate of Reporting
Person, PB Capital or RCBA.

          Under the Stock Purchase Agreement, Reporting Person, PB Capital and
RCBA have agreed (i) for two years after the date of the Closing of the
Transaction, not to transfer the Preferred Shares or the Common Shares to any
person that engages in the construction business in competition with the
business of Issuer, and (ii) after two years after the date of the Closing of
the Transaction, to allow Issuer the right of first refusal to purchase (under
certain circumstances) the Preferred Shares purchased pursuant to the Stock
Purchase Agreement or the Common Shares into which they may be converted.

          Reporting Person, on behalf of Separate Account P, and RCBA have
entered into a Services Agreement dated as of December 13, 1996 (the "Services
Agreement") under which Reporting Person has agreed to pay RCBA certain fees for
services rendered by RCBA in finding and structuring Reporting Person's
investment in the Preferred Shares and providing quarterly reports on the
performance of the Preferred Shares. Additionally, RCBA agrees to share with
Reporting Person certain transaction fees, if any, earned by it with respect to
the Preferred Shares and to have PB Capital reimburse Reporting Person for
certain expenses incurred by Reporting Person in making its investment in the
Preferred Shares. Additionally, Reporting Person agrees to bear its pro rata
share of the transaction and due diligence expenses incurred by PB Capital or
RCBA to the extent not reimbursed by Issuer for these expenses. A copy of the
Services Agreement is attached hereto as Exhibit 6.1.

          It is expected that prior to the closing of the Transaction, Reporting
Person, on behalf of Separate Account P, PB Capital and Issuer will enter into a
Registration Rights Agreement (the "Registration Rights Agreement") under which
the Issuer has agreed, among other things, upon the request of the holders of a
majority of the Preferred Shares to prepare and file with the Securities and
Exchange Commission a registration statement for an offering to be made on a
delayed or continuing basis with respect to the Common Shares or other
securities issued upon conversion of the Preferred Shares. A copy of the
proposed form of Registration Rights Agreement is attached hereto as Exhibit
6.2.

          It is further expected that prior to the closing of the Transaction,
Reporting Person, on behalf of Separate Account P, PB Capital, Issuer, The
Common Fund and the holders of certain warrants to purchase shares of common
stock of the Issuer (the "Initial Warrantholders") will enter into a
Securityholders Agreement (the "Securityholders Agreement") under which
Reporting Person, PB Capital and The Common Fund, on the one hand, and the
Initial Warrantholders, on the other hand, have agreed, among other things, that
each of them may participate in a distribution in an underwritten offering under
a shelf registration of certain securities by the other, and that each of them
may under certain circumstances require the other to become subject to a lockup
period with respect to the sale of securities of Issuer. A copy of the proposed
form of Securityholders Agreement is attached hereto as Exhibit 6.3.

          Except as set forth above, and as described in Items 3 and 4 hereto,
the Reporting Person and all other persons listed in Item 2 do not have any
contracts, arrangements, understandings or relationships with respect to any
securities of the issuer.
<PAGE>
 
ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

            The information set forth in the Exhibit Index is incorporated
herein by reference.



                                   SIGNATURES

          After reasonable inquiry and to the best of my knowledge and belief,
the undersigned certifies that the information set forth in this statement is
true, complete and correct.

Dated: December 16, 1996


                                 THE UNION LABOR LIFE INSURANCE
                                 COMPANY, on behalf of:

                                 THE UNION LABOR LIFE INSURANCE
                                 COMPANY SEPARATE ACCOUNT P



                                 By:  /s/ Michael R. Steed
                                     -----------------------------------------
                                     Michael R. Steed
                                     Senior Vice President, The Union Labor Life
                                     Insurance Company
<PAGE>
 
                                 Exhibit Index
<TABLE> 


<S>   <C> 
2.1    List of Directors and Officers of Reporting Person and ULLICO Inc.

4.1    Stock Assignment and Assumption Agreement dated as of December 13, 1996
       among Reporting Person, on behalf of Separate Account P, PB Capital and
       Issuer.

4.2    Stock Purchase and Sale Agreement dated as of July 24, 1996 among PB
       Capital, Issuer and RCBA together with Second Amendment to Stock Purchase
       Agreement dated as of November 8, 1996.

4.3    Shareholders Agreement dated as of December 13, 1996 between Reporting
       Person, on behalf of Separate Account P, and PB Capital.

6.1    Services Agreement dated as of December 13, 1996 between Reporting
       Person, on behalf of Separate Account P, and RCBA.

6.2    Proposed form of Registration Rights Agreement dated as of
       _________________, 1996 among Reporting Person, on behalf of Separate
       Account P, PB Capital and Issuer.

6.3    Proposed form of Securityholders Agreement dated as of _______________,
       1996 among Reporting Person, on behalf of Separate Account P, PB Capital,
       Issuer, The Common Fund and the Initial Warrantholders.
</TABLE> 

<PAGE>
 
                                                                     EXHIBIT 2.1

          Directors and Officers of Reporting Person and ULLICO Inc.
          ----------------------------------------------------------
<TABLE>
<CAPTION>
 
                                                            Principal Occupation
Name and Office Held         Citizenship                     or Employment
- --------------------         -----------                    --------------------               
<S>                          <C>                            <C>
 
Morton Bahr                  U.S.A.                         President
Director                                                    Communications Workers of
                                                            America
 
John J. Barry                U.S.A.                         International President
Director                                                    International Brotherhood of   
                                                            Electrical Workers
 
William G. Bernard           U.S.A.                         President
Director                                                    International Association of
                                                            Heat and Frost Insulator and
                                                            Asbestos Workers
 
Morris Biller                U.S.A.                         President
Director                                                    The American Postal Workers    
                                                            Union

Marvin J. Boede              U.S.A.                         President
Director                                                    United Association of
                                                            Journeymen and Apprentices
                                                            of the Pipe Fitting Industry
                                                            of the United States and Canada
 
Thomas W. Bowling            U.S.A.                         Vice President, Actuary
Vice President, Actuary                                     ULLICO Inc.
 
Kenneth J. Brown             Canada                         *
Director
 
Joseph A. Carabillo          U.S.A.                         Vice President,
Vice President,                                             Chief Legal Officer and
Chief Legal Officer and                                     Assistant Secretary
Assistant Secretary                                         ULLICO Inc.
 
Frank W. Carter              U.S.A.                         International President
Director                                                    Glass, Molders, Pottery,
                                                            Plastics & Allied Workers
                                                            International Union
 
Bill Casstevens              U.S.A.                         *
Director
 
Arthur A. Coia               U.S.A.                         President
Director                                                    Laborer's International Union
                                                            of North America
</TABLE> 
- -------------
* Retired
<PAGE>
 
<TABLE>
<CAPTION>
                                                 Principal Occupation
Name and Office Held               Citizenship   or Employment
- --------------------               -----------   --------------------
<S>                                <C>           <C>
 
 
John E.Cullerton                   U.S.A.        *
Director
 
John F. Gentleman                  U.S.A.        *
Director
 
Robert A. Georgine                 U.S.A.        Chairman, President and
Director, Chairman, President                    Chief Executive Officer
and Chief Executive Officer                      ULLICO Inc.
 
John K. Grelle                     U.S.A.        Senior Vice President,
Senior Vice President,                           Chief Financial Officer
Chief Financial Officer                          ULLICO Inc.
 
Frank Hanley                       U.S.A.        General President
Director                                         International Union of
                                                 Operating Engineers
 
Frank D. Hurt                      U.S.A.        International President
Director                                         Bakery, Confectionary and
                                                 Tobacco Workers
                                                 International Union
 
John T. Joyce                      U.S.A.        President
Director                                         International Union of
                                                 Bricklayers and Allied
                                                 Craftworkers
 
James La Sala                      U.S.A.        President
Director                                         Amalgamated Transit Union
 
James W. Luce                      U.S.A.        Executive Vice President
Executive Vice President                         ULLICO Inc.
 
Joseph F. Maloney                  U.S.A.        *
Director
 
Mark A. Maloney                    U.S.A.        Vice President,
Vice President,                                  National Sales Manager
National Sales Manager                           ULLICO Inc.
 
Douglas J. McCarron                U.S.A.        General President
Director                                         United Brotherhood of
                                                 Carpenters & Joiners of
                                                 America
 
James F.M. McNulty                 U.S.A.        General Counsel
Director                                         The Union Labor Life Insurance
                                                 Company
                                                 Principal Occupation
</TABLE> 
- ------------
* Retired
<PAGE>
 
<TABLE>
<CAPTION>
                                                         Principal Occupation
Name and Office Held                  Citizenship        or Employment
- --------------------                  -----------        --------------------
<S>                                   <C>                <C>
                                                         
Lenore Miller                         U.S.A.             President
Director                                                 Retail, Wholesale and
                                                         Department Store Union
                                                         
James J. Norton                       U.S.A.             President
Director                                                 Graphic Communications
                                                         International Union
                                                         
Lester H. Null, Sr.                   U.S.A.             Secretary/Treasurer
Director and Secretary/Treasurer                         ULLICO Inc.
                                                         
Melvin H. Roots                       U.S.A.             General President Emeritus
Director                                                 Operative Plasterer's and
                                                         Cement Mason's International
                                                         Association of the United States
                                                         and Canada
                                                         
Vincent R. Sombrotto                  U.S.A.             President
Director                                                 National Association of
                                                         Letter Carriers
                                                         
Charles R. Sormani                    U.S.A.             Senior Vice President,
Senior Vice President,                                   Insurance Operations
Insurance Operations                                     ULLICO Inc.
                                                         
Michael R. Steed                      U.S.A.             Senior Vice President,
Senior Vice President,                                   Investments
Investments                                              ULLICO Inc.
                                                         
John J. Sweeney                       U.S.A.             President
Director                                                 AFL-CIO
                                                         
Eugene Upshaw                         U.S.A.             President
Director                                                 Federation of Professional
                                                         Athletes
                                                         
Jacob F. West                         U.S.A.             General President
Director                                                 International Association of
                                                         Bridge, Structural and
                                                         Ornamental Iron Workers
                                                         
William H. Wynn                       U.S.A.             *
Director
</TABLE>

- --------------
* Retired

<PAGE>
 
                                                                     EXHIBIT 4.1
 

                   STOCK ASSIGNMENT AND ASSUMPTION AGREEMENT
                   -----------------------------------------

     This Stock Assignment and Assumption Agreement ("Assignment Agreement") is
entered into this 13th day of December 1996, by and among PB Capital Partners,
L.P., a Delaware limited partnership ("Assignor"), The Union Labor Life
Insurance Company Separate Account P ("Assignee") and Perini Corporation
("Seller").

     WHEREAS, Assignor is a party to a Stock Purchase and Sale Agreement by and
among Assignor, Seller, and Richard C. Blum & Associates, L.P., dated July 24,
1996, together with all exhibits and schedules thereto and all amendments and
modifications thereof (collectively referred to as the "Stock Purchase
Agreement"), pursuant to which Assignor agreed to purchase 150,150 shares of
newly issued Series B Cumulative Convertible Preferred Stock, par value $1.00
per share (the "Series B Preferred Stock"), of Seller for $30,030,000;

     WHEREAS, Assignor wishes to assign to Assignee, and Assignee wishes to
accept assignment from Assignor, (i) all of Assignor's rights and obligations
under the Stock Purchase Agreement to purchase from Seller at least 32,500
shares but not more than 37,500 shares of Series B Preferred Stock of Seller,
and (ii) all other rights, remedies, and obligations of Assignor under the Stock
Purchase Agreement with respect to the Assigned Shares (defined below);

     WHEREAS, the precise number of shares of Series B Preferred Stock (which
such number shall be at least 32,500 but not more than 37,500) which the
Assignee has the rights and obligation to purchase under the Stock Purchase
Agreement and this Assignment (the "Assigned Shares") shall be specified in
writing by Assignor at least seven (7) days prior to the Closing (as defined in
the Stock Purchase Agreement);

     NOW, THEREFORE, in consideration of the premises and of the respective
representations, warranties, covenants, agreements and conditions contained
herein and other good and valuable consideration the receipt and sufficiency of
which is hereby acknowledged, each of the parties agrees as follows:

     1.   Assignment and Assumption.
          ------------------------- 

     (a)  Upon the terms and subject to the conditions appearing herein, the
Assignor hereby transfers, assigns and delegates to the Assignee all of
Assignor's rights, title, interest, remedies, duties and obligations relating to
the purchase of the Assigned Shares under the Stock Purchase Agreement
(collectively, the "Assigned Rights").

     (b)   Upon the terms and subject to the conditions appearing herein, on the
basis of the representations, warranties and covenants of Seller in the Stock
Purchase Agreement, Assignee hereby accepts the foregoing assignment and
delegation and, in addition, expressly assumes and agrees to keep, perform and
fulfill all of the terms, covenants, conditions, duties and obligations 
                                       
<PAGE>
 
insofar as they relate to the Assignee's purchase of the Assigned Shares of the
Series B Preferred Stock which are required to be kept, performed and fulfilled
by the Assignor pursuant to the Stock Purchase Agreement from and after the date
of this Assignment. Assignor represents and warrants that it has delivered to
Assignee a true and complete copy of the Stock Purchase Agreement.

     (c) Assignor, Assignee and Seller hereby agree as follows:

          (1) All obligations of Assignor and Assignee under the Stock Purchase
Agreement shall be several, and Assignee and Assignor shall not be jointly
obligated in any respect.

          (2) All covenants, duties, obligations and liabilities of Assignee
arising under the Stock Purchase Agreement as a result of this Agreement shall
be limited to the covenants, duties, obligations and liabilities that relate to
the Assigned Shares.  Without limiting the generality of the immediately
preceding sentence, neither Assignee nor Assignor shall have any responsibility
for any breach or default, or failure in performance, of the other under the
Stock Purchase Agreement.

          (3) Except as hereinafter provided, wherever in the Stock Purchase
Agreement there is any reference to "Purchaser", as defined in the Stock
Purchase Agreement, that reference shall mean and refer to each of "Purchaser"
and "The Union Labor Life Insurance Company Separate Account P."  Without
limiting the generality of the foregoing, (i) all obligations of Seller to
Purchaser, including, without limitation, those arising under the
representations, warranties and covenants of Seller in, or as provided for
under, the Stock Purchase Agreement, shall be to each of Assignor and Assignee,
(ii) all approvals, agreements, consents and waivers of Purchaser under the
Stock Purchase Agreement must be given by each of Assignor and Assignee, (iii)
all disclosures that Seller is required to make to Purchaser under the Stock
Purchase Agreement or applicable law and all information that Seller must
provide to Purchaser must be made and provided to Assignor and Assignee, and
(iv) the Stock Purchase Agreement may not be amended or modified without the
written consent of each of Assignor and Assignee.

          (4) Assignee's representations and warranties under Section 2 of this
Agreement shall be substituted for any representation and warranties of Assignee
under Article VI of the Stock Purchase Agreement; and Assignee hereby makes such
representations and warranties appearing in such Section 2 to Seller as well as
Assignor.

          (5) If Seller requires that Assignee provide an opinion of counsel to
Seller under Section 4.8 of the Stock Purchase Agreement, Assignee may deliver
an opinion of Paul, Hastings, Janofsky & Walker, LLP, special counsel to
Assignee, which opinion shall cover such matters as may be reasonably requested
by Seller.

                                      -2-
<PAGE>
 
          (6) Assignee shall become a party to the Registration Rights Agreement
referred to in Section 3.11 of the Stock Purchase Agreement, upon terms
reasonably satisfactory to Assignee.

          (7) Assignee shall not become a party to the Voting Agreement referred
to in Section 3.12 of the Stock Purchase Agreement.

          (8) Assignee has no authority to designate, and in fact has not
designated, any person to serve a director of Seller or to serve on the
Executive Committee of Seller.

          (9) Seller shall take reasonable measures to establish procedures to
deal with, and minimize the effects of, conflicts of interest of directors and
officers of Seller and shall from time to time provide Assignee with such
information with respect to such procedures and their application to specific
circumstances as Assignee may reasonably request.

          (10) All notices to Assignee under the Stock Purchase Agreement shall
be given in the manner provided in Section 14.1 thereof and to Assignee as
follows:

     If to Assignee:

               The Union Labor Life Insurance Company
               Separate Account P
               111 Massachusetts Avenue, N.W.
               Washington, D.C.  20001
               Attention:  Michael P. Steed
               Facsimile:  202-682-7970

     With a copy to:

               Paul, Hastings, Janofsky & Walker, LLP
               555 South Flower Street
               23rd Floor
               Los Angeles, CA  90071
               Attention:  Alan J. Barton
               Facsimile   213-627-0705

          (11) Assignee's obligation to purchase the Assigned Shares shall be
conditioned upon Assignor's representations and warranties in Section 3(d)
hereof being true and correct as of the Closing Date.

          (12) The Stock Purchase Agreement is hereby amended to incorporate the
foregoing provisions of his Section 1(c) to the extent necessary to give effect
to such provisions and to avoid any inconsistency between such provisions and
the Stock Purchase Agreement.

                                      -3-
<PAGE>
 
     2.   Further Representations and Warranties of Assignee.  In addition to
          --------------------------------------------------                 
Assignee's assumption of the obligations under the Stock Purchase Agreement, the
Assignee hereby represents and warrants to, and agrees with, Assignor (which
representations and warranties shall be true and complete on the date hereof and
on the Closing Date, as defined in the Stock Purchase Agreement) as follows:

          (a)  The Assignee has the full corporate power and authority to
               execute, deliver and perform its obligations under this
               Assignment Agreement and the Stock Purchase Agreement as they
               relate to the purchase of the Assigned Shares of Series B
               Preferred Stock. The Assignee has taken all action required by
               law, its charter, its by-laws or otherwise required to be taken
               by it to authorize the execution and delivery of this Assignment
               Agreement and the consummation of the transactions contemplated
               to be performed by it under the Assignment Agreement and the
               Stock Purchase Agreement.

          (b)  The execution, delivery and performance of this Agreement by
               Assignee (a) has been duly approved by all required corporate
               action, (b) will not violate, conflict with, result in a breach
               of or constitute a default (with or without notice or passage of
               time, or both) under (i) the articles of incorporation, charter,
               or by-laws or any governing document of the Assignee, (ii) any
               indenture, agreement or other instrument to which Assignee is a
               party or by which any of its property may be bound, (iii) any
               judgment, order, decree, award or ruling, or (iv) any federal,
               state or local law, rule or regulation. No consent, authorization
               or approval of, or declaration, filing or registration with, or
               exemption by, any governmental or regulatory authority is
               required to be obtained by Assignee in connection with the
               execution and delivery of, and the performance by the Assignee of
               its obligations under, this Assignment Agreement or Stock
               Purchase Agreement or the consummation by the Assignee of the
               transactions to be performed by it as contemplated hereby and
               thereby.

          (c)  The Assignee (a) has such knowledge, sophistication and
               experience in business and financial matters that it is capable
               of evaluating the merits and risks of an investment in the Series
               B Preferred Stock, (b) fully understands the nature, scope and
               duration of the limitations on transfer contained in the Stock
               Purchase Agreement, (c) can bear the economic risk of an
               investment in the Series B Preferred Stock and can afford a
               complete loss of such investment, (d) has determined that the
               Series B Preferred Stock is a suitable investment for the
               Assignee, and (e) is purchasing the Series B Preferred Stock for
               investment purposes and not with a view to, or for a sale in
               connection with, any public distribution in violation of the
               Securities Act of 1933 (the "Act"). The Assignee acknowledges (x)
               that it

                                      -4-
<PAGE>
 
               has received copies of the documents filed by Seller with the
               Securities and Exchange Commission (the "SEC Documents") filed
               with the SEC since January 1, 1996, and a copy of the private
               placement memorandum prepared by the Assignor for investors in
               limited partnership interests of the Assignor, and (y) that it
               has read the documents described in clause (x).

          (d)  There is no claim, suit, action, proceeding or investigation
               (whether in law or equity, before or by any government entity or
               before any arbitrator) pending or, to the knowledge of the
               Assignee, threatened against the Assignee, the outcome of which
               would in any manner impair the ability of the Assignee to perform
               its obligations under the Assignment Agreement or the Stock
               Purchase Agreement.

          (e)  The Assignee has not entered into, nor will enter into, during
               the term of the Assignment Agreement or the Stock Purchase
               Agreement, any agreement or understanding with any person or
               entity that will result in the obligation of the Seller or
               Assignor to pay any finder's fee, brokerage commission or similar
               payment in connection with the transactions contemplated in the
               Assignment Agreement or Stock Purchase Agreement.

          (f)  The Assignee is financially capable and has, or will have at the
               time of purchasing the Series B Preferred Stock, sufficient cash
               and other resources available to complete the transactions
               contemplated by the Assignment Agreement and Stock Purchase
               Agreement.

          (g)  The Assignee understands that the Series B Preferred Stock has
               not been registered under the Act or under the securities laws of
               any state, and, therefore cannot be transferred, resold, pledged,
               hypothecated, assigned, or otherwise disposed of unless it is
               subsequently registered or qualified under the Act and under
               applicable state securities laws, or an exemption from
               registration and/or qualification is available. The Assignee will
               not sell or otherwise transfer any of the Series B Preferred
               Stock without registration under the Act or pursuant to an
               exemption therefrom, and understands and agrees that, except as
               provided in the Registration Rights Agreement, the Assignor is
               not obliged to register or qualify the Series B Preferred Stock
               on behalf of the Assignee, or in assisting the Assignee with
               complying with any exemption from such registration or
               qualification.

          (h)  If the Assignee is a corporation, partnership, trust employee
               benefit plan, individual retirement account, Keogh plan, or other
               tax-exempt entity, 

                                      -5-
<PAGE>
 
               such Assignee is authorized and qualified to enter into the
               Agreement and invest in securities such as the Series B Preferred
               Stock.

          (i)  If the Assignee holds assets from employee benefit plans (the
               "Plans"), the Assignee represents and warrants that: (i) it is a
               fiduciary of the Plans; (ii) the Assignee understands the nature
               of the investment in the Series B Preferred Stock; and (iii) the
               Assignee has given appropriate consideration to the investment in
               the Series B Preferred Stock.

          (j)  The Assignee is an "accredited investor" as that term is defined
               under the Securities Act of 1933 and Regulation D promulgated and
               pursuant thereto.

     3.   Representations and Warranties of Assignor.  In connection with the
          ------------------------------------------                         
Assignee's decision to purchase Series B Preferred Stock and Seller's decision
to permit such assignment, the Assignor hereby acknowledges, represents and
warrants, and agrees with the Assignee and, as to Section 3(d) only, with Seller
(which representations and warranties shall be true and complete on the date
hereof and on the Closing Date, as defined in the Stock Purchase Agreement) as
follows:

          (a) The Assignor is a limited partnership duly formed, validly
              existing and in good standing under the Delaware Revised Limited
              Partnership Act (the "Partnership Act") and has the partnership
              power and authority to execute, deliver, and perform its
              obligations under this Agreement and own its properties and carry
              on its business. The General Partner of the Assignor is Richard C.
              Blum & Associates, L.P., a validly existing limited partnership in
              good standing under the California Revised Limited Partnership
              Act. The General Partner has the partnership power and authority
              to execute and deliver this Agreement and perform the obligations
              hereunder.

          (b) There is no claim, suit, action, proceeding or investigation
              (whether in law or equity, before or by any government entity or
              before any arbitrator) pending or, to the knowledge of the
              Assignor, threatened against the Assignor, the outcome of which
              would in any manner impair the ability of the Assignor to perform
              its obligations under the Assignment Agreement or the Stock
              Purchase Agreement.

          (c) The execution, delivery and performance of this Agreement by
              Assignor (a) has been duly approved by all required partner
              action, (b) will not violate, conflict with, result in a breach of
              or constitute a default (with or without notice or passage of
              time, or both) under (i) the partnership agreement governing
              Assignor, (ii) the Stock Purchase Agreement, (iii) 

                                      -6-
<PAGE>
 
              any indenture, agreement or other instrument to which Assignor is
              a party or by which any of its property may be bound, (iv) any
              judgment, order, decree, award or ruling or (v) any federal, state
              or local law, rule or regulation. No consent, authorization or
              approval of, or declaration, filing or registration with, or
              exemption by, any governmental or regulatory authority is required
              to be obtained by Assignor in connection with the execution and
              delivery of, and the performance by the Assignor of its
              obligations under, this Assignment Agreement or Stock Purchase
              Agreement or the consummation by the Assignor of the transactions
              to be performed by it as contemplated hereby and thereby.

          (d) The Assigned Rights (i) constitute the valid and enforceable right
              to purchase the Assigned Shares from Seller under and in
              accordance with the Stock Purchase Agreement, free and clear or
              all liens, encumbrances charges and restrictions (other than the
              restrictions appearing in this Agreement, the Stock Purchase
              Agreement, and those imposed by the Act), and (ii) are being
              transferred and assigned to Assignor free and clear of all liens,
              encumbrances, charges and restrictions (other than the
              restrictions appearing in this Agreement, the Stock Purchase
              Agreement, and those imposed by the Act).

          (e) To the Assignor's actual knowledge, (i) the representations and
              warranties of Seller in Article V in and under the Stock Purchase
              Agreement are true and correct, (ii) Seller is not in material
              breach or default of its obligations under the Stock Purchase
              Agreement, and (iii) there is no fact presently known to it that
              would cause Assignor not to consummate the transactions
              contemplated in the Stock Purchase Agreement. At the same time,
              Assignee acknowledges and is aware of the poor financial condition
              of the Seller, the risks involved in investing in a company in
              poor financial condition, and the possibility that Seller is in
              worse financial condition than Assignor in good faith believes it
              to be.

     4.   Modification.  This Assignment Agreement shall not be modified,
          ------------                                                   
discharged or terminated except by an instrument in writing signed by the party
against whom any waiver, change, discharge or termination is sought.

     5.   Notices.  Any notice, demand or other communication that any party
          -------                                                           
hereto may give to anyone interested hereunder shall be sufficiently given if
given in the manner provided in Section 14.1 of the Stock Purchase Agreement; to
Assignor as specified in such Section 14.1; and to Assignee as specified in
Section 1(c)(12) of this Agreement.

     6.   Binding Effect.  Upon execution by both of the parties hereto, this
          --------------                                                     
Assignment Agreement shall be binding upon and inure to the benefit of the
parties and their heirs, executors, 

                                      -7-
<PAGE>
 
administrators, successors and legal representatives, except that such
enforcement may be subject to bankruptcy, insolvency, reorganization,
moratorium, or other similar laws now or hereafter in effect relating to
creditors' rights and general principles of equity and except to the extent that
rights to indemnity and contribution may be limited by federal or state
securities laws or policies underlying such laws.

     7.   Entire Agreement.  This Assignment Agreement, together with the Stock
          ----------------                                                     
Purchase Agreement, the Registration Rights Agreement, the Certificate of Vote
of Directors with respect to the Series B Preferred Stock and the Shareholders'
Agreement constitute the entire agreement of the parties, and there are no
representations, covenants or other agreements except as stated or referred to
herein.

     8.   Assignability.  This Assignment Agreement is not transferable or
          -------------                                                   
assignable by any party hereto.

     9.   Applicable Law.  This Assignment Agreement shall be governed by and
          --------------                                                     
construed in accordance with the laws of the State of Delaware, without giving
effect to the principles of the conflicts of laws thereof.

     10.  Counterparts.  This Assignment Agreement may be executed through the
          ------------                                                        
use of separate signature pages or in any number of counterparts, and each of
such counterparts shall, for all purposes, constitute one agreement binding on
all the parties, notwithstanding that all parties are not signatories to the
same counterpart.
 

                                      -8-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have entered into this Assignment
Agreement as of the date first written above.


THE UNION LABOR LIFE INSURANCE 
COMPANY, SEPARATE ACCOUNT P



By:  _________________________
     Michael R. Steed
     Senior Vice President

PB CAPITAL PARTNERS,  L.P.

By: Richard C. Blum & Associates, L.P.

          By:  Richard C. Blum & Associates, Inc.

               By: _________________________________ 
                    Marc Scholvinck, Chief Financial
                    Officer and Managing Director


PERINI CORPORATION



By: __________________________
 

                                      -9-

<PAGE>
 
                                                                     EXHIBIT 4.2





                       STOCK PURCHASE AND SALE AGREEMENT


                           DATED AS OF JULY 24, 1996

                                 BY AND AMONG

                      RICHARD C. BLUM & ASSOCIATES, L.P.

                          PB CAPITAL PARTNERS, L.P.,

                                      AND

                              PERINI CORPORATION
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------
<TABLE>
<S>                                                                               <C>
ARTICLE I - DEFINITIONS; CERTAIN REFERENCES....................................   1

ARTICLE II -  CLOSING..........................................................   6
    2.1       Time and Place of the Closing....................................   6
    2.2       Transactions at the Closing......................................   6

ARTICLE III - CONDITIONS PRECEDENT TO OBLIGATIONS OF RCBA OR
               PURCHASER.......................................................   6
    3.1       Compliance by Seller.............................................   7
    3.2       No Legal Action..................................................   7
    3.3       Certificate of Vote of Directors.................................   7
    3.4       Amendment of Bylaws..............................................   7
    3.5       Rights Agreement.................................................   7
    3.6       Employment Contracts.............................................   7
    3.7       American Stock Exchange..........................................   7
    3.8       Due Diligence....................................................   8
    3.9       Credit and Bonding Agreements....................................   8
    3.10      Legal Opinions...................................................   8
    3.11      Registration Rights Agreement....................................   8
    3.12      Voting Agreement.................................................   9
    3.13      Other............................................................   9
    3.14      HSR..............................................................   9

ARTICLE IV - CONDITIONS PRECEDENT TO OBLIGATIONS OF SELLER.....................   9
    4.1       Compliance by RCBA and Purchaser.................................   9
    4.2       No Legal Action..................................................   9
    4.3       Opinion of Independent Investment Banking Firm...................   9
    4.4       Employment Contracts.............................................  10
    4.5       American Stock Exchange..........................................  10
    4.6       Credit and Bonding Agreements....................................  10
    4.7       HSR..............................................................  10
    4.8       Legal Opinions...................................................  10
    4.9       Current Ownership................................................  10

ARTICLE V - REPRESENTATIONS AND WARRANTIES OF SELLER...........................  10
    5.1       Organization, Good Standing, Power, Authority, Etc...............  10
    5.2       Capitalization of Seller.........................................  11
    5.3       SEC Documents....................................................  11
    5.4       Authority and Qualification of Seller............................  12
</TABLE>
                                     - i -
<PAGE>
 
<TABLE> 
<S>                                                                              <C>  
    5.5      Subsidiaries......................................................  12
    5.6      Outstanding Securities............................................  12
    5.7      No Contravention, Conflict, Breach, Etc...........................  13
    5.8      Consents..........................................................  13
    5.9      No Existing Violation or Default..................................  13
    5.10     Environmental Matters.............................................  13
    5.11     Licenses and Permits..............................................  16
    5.12     Title to Properties...............................................  16
    5.13     Taxes.............................................................  16
    5.14     Litigation........................................................  18
    5.15     Labor Matters.....................................................  18
    5.16     No Illegal or Improper Transactions...............................  19
    5.17     Contracts.........................................................  19
    5.18     Finder's Fees.....................................................  19
    5.19     Financial Statements..............................................  19
    5.20     Employee Benefit Plans; ERISA.....................................  19
    5.21     Contingent Liabilities............................................  22
    5.22     No Material Adverse Change........................................  22
    5.23     Investment Company................................................  24
    5.24     Exemption from Registration; Restrictions on Offer and Sale of
             Same or Similar Securities........................................  24
    5.25     Disclosure........................................................  24

ARTICLE VI - REPRESENTATIONS AND WARRANTIES OF RCBA AND
              PURCHASER........................................................  24
    6.1      Organization, Good Standing, Power, Authority, Etc................  24
    6.2      No Conflicts; No Consents.........................................  25
    6.3      Investment Intent, Etc............................................  25
    6.4      Litigation........................................................  25
    6.5      Certain Fees......................................................  26
    6.6      Financial Ability.................................................  26

ARTICLE VII - COVENANTS OF THE PARTIES.........................................  26
    7.1      Restrictive Legends...............................................  26
    7.2      Executive Committee...............................................  26
    7.3      Seller's Board of Directors.......................................  27
    7.4      Perini Disclosure Schedule........................................  27
    7.5      Certificates for Shares and Conversion Shares To Bear Legends.....  27
    7.6      Removal of Legends................................................  29
    7.7      Pre-Closing Activities............................................  29
    7.8      Information.......................................................  29
    7.9      Shareholder Meeting...............................................  29
</TABLE> 

                                    - ii -
<PAGE>
 
<TABLE> 
<S>                                                                              <C>  
    7.10     Proxy Statement...................................................  29
    7.11     Registration Rights...............................................  30
    7.12     Stock Exchange Listing............................................  30
    7.13     HSR...............................................................  30
    7.14     Acquisition Proposals.............................................  30
    7.15     Publicity.........................................................  31
    7.16     Reservation of Shares.............................................  31
    7.17     Confidentiality...................................................  31
    7.18     Use of Proceeds...................................................  32
    7.19     Maintenance of Business...........................................  32
 
ARTICLE VIII - STANDSTILL......................................................  32
    8.1      Generally.........................................................  32
    8.2      Voting............................................................  33
    8.3      Length............................................................  33

ARTICLE IX - TERMINATION.......................................................  35

ARTICLE X - EVENTS OF DEFAULT..................................................  35
    10.1     By Seller.........................................................  35
    10.2     By Purchaser......................................................  36
    10.3     Specific Remedies.................................................  36
 
ARTICLE XI - SURVIVAL OF REPRESENTATIONS AND WARRANTIES........................  37

ARTICLE XII - PERFORMANCE; WAIVER..............................................  37

ARTICLE XIII - SUCCESSORS AND ASSIGNS..........................................  37

ARTICLE XIV - MISCELLANEOUS....................................................  38
    14.1     Notices...........................................................  38
    14.2     Expenses..........................................................  39
    14.3     Governing Law.....................................................  39
    14.4     Severability; Interpretation......................................  39
    14.5     Headings..........................................................  39
    14.6     Entire Agreement..................................................  39
    14.7     Counterparts......................................................  39
    14.8     Absence of Third Party Beneficiary Rights.........................  39
    14.9     Mutual Drafting...................................................  39
    14.10    Further Representations...........................................  40
    14.11    Specific Performance; Remedies....................................  40
    14.12    Right of First Refusal; Transfer of Securities....................  40
</TABLE>

                                    - iii -
<PAGE>
 
                       STOCK PURCHASE AND SALE AGREEMENT


          This STOCK PURCHASE AGREEMENT (the "Agreement") is made and entered
into as of July 24, 1996, by and among Richard C. Blum & Associates, L.P., a
California limited partnership ("RCBA"), PB Capital Partners, L.P., a Delaware
limited partnership ("Purchaser"), and Perini Corporation, a Massachusetts
corporation ("Seller").

          WHEREAS, Seller is engaged primarily in the construction business; and

          WHEREAS, Seller wishes to sell, and Purchaser wishes to purchase, an
aggregate of 150,150 newly issued shares ("Shares") of Series B Cumulative
Convertible Preferred Stock of Seller ("Series B Cumulative Convertible
Preferred Stock"), such stock being subordinate only to the existing outstanding
$21.25 Convertible Exchangeable Preferred Stock ("$21.25 Preferred Stock") of
Seller for the consideration and upon the terms and subject to the conditions
set forth in this Agreement.

          NOW, THEREFORE, in consideration of the premises and of the respective
representations, warranties, covenants, agreements and conditions contained
herein, each of RCBA, Purchaser and Seller (together "Parties") agree as
follows:


                                   ARTICLE I
                        DEFINITIONS; CERTAIN REFERENCES

          The terms defined in this Section 1, whenever used in this Agreement,
shall have the following meanings for all purposes of this Agreement:

          1.1  "Acquisition Proposal" has the meaning set forth in Section 7.14
of this Agreement.

          1.2  "Act" means the Securities Act of 1933, as amended.
 
          1.3  "Affiliate" has the meaning set forth in Rule 12b-2 under the
Exchange Act.

          1.4  "Annual Report" has the meaning set forth in Section 5.5.

          1.5  "Articles of Organization" means the Articles of Organization of
Seller as filed with the Office of the Secretary of State for the Commonwealth
of Massachusetts, as amended from time to time.

                                      -1-
<PAGE>
 
          1.6  "Bylaw Amendments" means the Amendments to the Bylaws of the
Seller, to be approved by the Board of Directors prior to the Closing Date and
submitted by the Seller to the shareholders of Seller for ratification at the
Shareholder Meeting, a true and correct copy of which is attached as Exhibit 1.6
hereto.

          1.7  "Certificate of Vote of Directors" means the Certificate of Vote
of Directors classifying 500,000 shares as Series B Cumulative Convertible
Preferred Stock, to be filed by Seller with the Office of the Secretary of State
for the Commonwealth of Massachusetts on or prior to the date and time of the
Closing, a true and correct copy of the text of which is attached as Exhibit 1.7
hereto.

          1.8  "Closing" has the meaning set forth in Section 2.1 of this
Agreement.

          1.9  "Closing Date" has the meaning set forth in Section 2.1 of this
Agreement.

          1.10  "Common Stock" means the common stock, par value $1.00 per
share, of Seller.

          1.11  "Conversion Shares" means the shares of Common Stock issuable or
issued upon conversion of the Shares pursuant to the terms of this Agreement and
the Certificate of Vote of Directors.

          1.12  "Encumbrance" has the meaning set forth in Section 5.5 of this
Agreement.

          1.13  "Environmental Claims" means any and all claims, actions, causes
of action, or other written notices by any Person or entity alleging potential
liability (including, without limitation, potential liability for investigatory
costs, cleanup costs, governmental response costs, natural resources damages,
property damages, personal injuries, or civil or criminal penalties) arising out
of or resulting from (i) the presence or release into the environment of any
Hazardous Material at any location, whether or not owned or operated by the
Seller or any Subsidiary of Seller, or (ii) any violation of any Environmental
Laws.

          1.14  "Environmental Laws" means any and all applicable federal,
state, local and foreign statutes, laws, judicial decisions, regulations,
ordinances, rules, judgments, judicial orders, decrees, codes, injunctions,
permits, consent decrees, consent orders and governmental restrictions, now in
effect, relating to human health, the environment or to emissions, discharges or
releases of pollutants, contaminants, Hazardous Materials or wastes into the
environment, including without limitation ambient air, surface water, ground
water or land, or otherwise relating to the manufacture, processing,
distribution, use, treatment, storage, disposal, transport or handling of
pollutants, contaminants, Hazardous Materials or wastes or the clean-up or other
remediation thereof.

                                      -2-
<PAGE>
 
          1.15  "Environmental Permits" means any and all permits, licenses,
authorizations, certificates and approvals of governmental authorities relating
to or required by Environmental Laws and necessary for the business of the
Seller and the Subsidiaries as currently conducted.

          1.16  "Environmental Subsidiary" means Perini Environmental Services,
Inc.

          1.17  "ERISA" has the meaning set forth in Section 5.20(b) of this
Agreement.

          1.18  "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

          1.19  "Government Entity" means any foreign, federal, state, or local
court or tribunal or administrative, governmental or regulatory body, agency,
commission, division, department, public body or other authority.

          1.20  "Hazardous Materials" means any and all toxic, radioactive,
caustic or otherwise hazardous substances or pollutants, including petroleum,
its derivatives, by-products and other hydrocarbons regulated by, or for which
liability may be imposed under, Environmental Laws.

          1.21  "Knowledge of Seller" means to the actual knowledge of (i) any
executive officer or director of the Seller or any Subsidiary of Seller or (ii)
a person who is listed on Exhibit 1.21, which exhibit will be agreed upon by the
parties and filed together with the Perini Disclosure Schedule.

          1.22  "Licenses" has the meaning set forth in Section 5.10(g) of this
Agreement.

          1.23  "Material Adverse Effect" has the meaning set forth in Section
5.4 of this Agreement.

          1.24 "Multiemployer Pension Plan" means a multiemployer plan as
defined in Section 4001(a)(3) of ERISA.
 
          1.25  "New Directors" has the meaning set forth in Section 7.3 of this
Agreement.

          1.26  "Perini Securities" has the meaning set forth in Section 8.1(a)
of this Agreement.

                                      -3-
<PAGE>
 
          1.27  "Person" means and includes an individual, a partnership, a
joint venture, a corporation, a trust, an unincorporated organization and a
Government Entity.

          1.28  "Proxy Statement" means the proxy statement to be sent to the
shareholders of Seller in connection with the Shareholder Meeting of Seller with
respect to, among other matters, the Shareholder Meeting Matters.

          1.29  "Purchase Price" means $200.00 multiplied by the number of
Shares to be purchased by Purchaser and $30,030,000 in the aggregate.

          1.30  "Purchaser" has the meaning set forth in the first recital of
this Agreement.

          1.31  "RCBA" has the meaning set forth in the first recital of this
Agreement.

          1.32  "Registration Rights Agreement" means the Registration Rights
Agreement to be dated as of the date of the Closing among Seller and the
Purchaser, in substantially the form attached as Exhibit 1.32 hereto which shall
be revised to include additional provisions governing notice, indemnification,
black-out rights and hold back agreements, as amended, supplemented and modified
from time to time in accordance with the terms thereof.

          1.33  "Representatives" has the meaning set forth in Section 3.8 of
this Agreement.

          1.34  "Rights Agreement" means the rights agreement between Perini
Corporation and The First National Bank of Boston dated September 23, 1988, as
amended.

          1.35  "SEC" means the Securities and Exchange Commission.

          1.36  "SEC Documents" means all documents filed by Seller with the SEC
since January 1, 1993.

          1.37  "Seller Plan" means each "employee benefit plan" (as defined in
Section 3(3) of ERISA), whether or not subject to ERISA and any other employee
benefit, bonus, fringe benefit, deferred compensation, equity based
compensation, severance and welfare plan, employment or severance agreement and
any similar arrangement that is maintained or contributed to by Seller or any
Subsidiary for the benefit of any employee or former employee or director or
former director of Seller or any Subsidiary, in such capacity, and any other
plan for which Seller or any Subsidiary could incur liability under Section 412
of the Code or Title IV of ERISA other than Multiemployer Pension Plans.

                                      -4-
<PAGE>
 
          1.38  "Shareholder Meeting" has the meaning set forth in Section 7.9
of this Agreement.

          1.39  "Shareholder Meeting Matters" has the meaning set forth in
Section 7.9 of this Agreement.

          1.40  "Shares" has the meaning set forth in the second recital of this
Agreement.

          1.41  "Special Default" has the meaning specified in the Certificate
of Vote of Directors.

          1.42  "Standstill Period" has the meaning set forth in Section 8.3 of
this Agreement.

          1.43  "Stock Purchase" means the purchase of Series B Cumulative
Convertible Preferred Stock by Purchaser from Seller under this Agreement.

          1.44  "Subsidiary" means, with respect to Seller, any corporation,
limited or general partnership, joint venture, association, joint stock company,
trust, unincorporated organization, or other entity analogous to any of the
foregoing of which a majority of the equity ownership (whether voting stock or
comparable interest) is, at the time, owned, directly or indirectly by Seller.

          1.45  "Taxes" means any and all taxes, levies or other like
assessments, charges or fees (including estimated taxes, charges and fees),
including, without limitation, income, corporation, add-on minimum, ad valorem,
advance corporation, gross receipts, transfer, excise, property, sales, use,
value-added, license, payroll, employment, severance, pay as you earn,
withholding on amounts paid by or to the relevant party, social security and
franchise or other governmental taxes or charges, imposed by the United States
or any state, county, local or foreign government or subdivision or agency
thereof; and such term shall include any interest, penalties or additions to tax
attributable to such taxes.

          1.46  "Tax Return" means any report, return, statement or other
written information required to be supplied to a taxing authority in connection
with Taxes.

          1.47  "Transaction Documents" means this Agreement, the Bylaw
Amendments, the Certificate of Vote of Directors, the Registration Rights
Agreement, and the Voting Agreement.

          1.48 "Transfer Restricted Security" means a share of Series B
Cumulative Convertible Preferred Stock, a Conversion Share, and any other
security which has not been either effectively registered under the Act or
distributed to the public pursuant to Rule 144

                                      -5-
<PAGE>
 
under the Act until such share of Series B Cumulative Convertible Preferred
Stock, Conversion Share, or other security (i) has been effectively registered
under the Act and disposed of in accordance with a registration statement filed
under the Act covering it or (ii) is distributed to the public pursuant to Rule
144 under the Act.

          1.49   "Voting Agreement" means the Voting Agreement among Purchaser,
Seller, David B. Perini, Bart Perini, Ronald Tutor and Tutor-Saliba Corporation,
and, if agreed, Perini Memorial Foundation and David B. Perini Testamentary
Trust under the will of Louis R. Perini, substantially in the form attached
hereto as Exhibit 3.12.


                                  ARTICLE II
                                    CLOSING

          2.1  Time and Place of the Closing.  Seller shall as promptly as
               -----------------------------                              
practicable notify Purchaser, and Purchaser shall as promptly as practicable
notify Seller when the conditions, contained in Articles III and IV hereof, to
such party or parties' obligation to effect the Stock Purchase have been
satisfied.  The closing of the Stock Purchase (the "Closing") shall take place
at the offices of Morris, James, Hitchens & Williams, 222 Delaware Avenue,
Wilmington, Delaware 19899, or such other location within Delaware as the
parties may mutually agree, on September 9, 1996 or within one thirty (30) day
extension thereof on the election of any party in the event the conditions set
forth in Sections 3.9, 3.14, 4.6 and 4.7 have not been met (the "Closing Date"),
and shall be effective as of 12:01 a.m. on the Closing Date, unless another
date, effective time, or place is agreed to in writing by Purchaser and Seller.

          2.2  Transactions at the Closing.  At the Closing, subject to the
               ---------------------------                                 
terms and conditions of this Agreement, Seller shall issue and sell to Purchaser
and Purchaser shall purchase the Shares.  At the Closing, Seller shall deliver
to Purchaser a certificate or certificates representing the number of Shares to
be purchased registered in the name of Purchaser or its nominee against payment
of the Purchase Price with respect thereto by wire transfer of immediately
available funds to an account or accounts previously designated by Seller.


                                  ARTICLE III
            CONDITIONS PRECEDENT TO OBLIGATIONS OF RCBA OR PURCHASER

          The obligations of RCBA, Purchaser to be discharged under this
Agreement on or prior to the Closing are subject to satisfaction of the
following conditions at or prior to the Closing (unless expressly waived in
writing by RCBA and Purchaser at or prior to the Closing):

                                      -6-
<PAGE>
 
          3.1  Compliance by Seller.  All of the terms, covenants and conditions
               --------------------                                             
of this Agreement to be complied with and performed by Seller at or prior to the
Closing shall have been complied with and performed by it in all material
respects, and the representations and warranties made by Seller in this
Agreement shall be true and correct in all material respects at and as of the
Closing, with the same force and effect as though such representations and
warranties had been made at and as of the Closing, except for changes expressly
contemplated by this Agreement and except for representations and warranties
that are made as of a specific time which shall be true and correct in all
material respects only as of such time.

          3.2  No Legal Action.  No action, suit, investigation or other
               ---------------                                          
proceeding relating to the transactions contemplated hereby shall have been
instituted before or threatened by any Government Entity which presents a
substantial risk of the restraint or prohibition of the transactions
contemplated hereby or the obtaining of material damages or other material
relief in connection therewith.

          3.3  Certificate of Vote of Directors.  The Certificate of Vote of
               --------------------------------                             
Directors shall have been filed for record with the Office of the Secretary of
the Commonwealth for the Commonwealth of Massachusetts and shall have become
effective.

          3.4  Amendment of Bylaws.  The Bylaw Amendments shall have been
               -------------------                                       
approved and made effective by the Board of Directors of the Seller subject to
Closing.

          3.5  Rights Agreement.  The Rights Agreement shall be in full force
               ----------------                                              
and effect and not have been otherwise amended, modified or supplemented on or
after the date of this Agreement; provided, however, that the Board of Directors
                                  --------  -------                             
of the Seller shall have amended or waived provisions of the Rights Agreement
such that neither the execution nor the delivery of this Agreement and the other
Transaction Documents nor the fulfillment of the terms of this Agreement by the
Seller nor the issuance of shares of Conversion Stock as herein contemplated
will cause there to be a Stock Acquisition Date or a Distribution Date (as those
terms are defined in the Rights Agreement).

          3.6  Employment Contracts.  David B. Perini, Richard J. Rizzo, John H.
               --------------------                                             
Schwartz, Bart Perini and Donald E. Unbekant shall have each signed employment
or other agreements with Seller reflecting the terms set forth at Exhibit 3.6.,
in forms reasonably acceptable to both Seller and RCBA.

          3.7  American Stock Exchange. RCBA and Purchaser shall have received
               -----------------------                                        
satisfactory assurance from the American Stock Exchange (the "Exchange"), in a
form reasonably satisfactory to RCBA and Purchaser, that:

               (a) upon ratification within one year hereof of the sale of
Shares described in this Agreement by shareholders of Seller (including holders
of the Shares) in

                                      -7-
<PAGE>
 
accordance with the rules of the Exchange, all Common Stock into which the
shares are convertible will be eligible for listing on the Exchange upon such
conversion; and

               (b) consummation of the transaction will not cause any securities
of the Seller already listed on the American Stock Exchange to lose their
listing privileges.
 
          3.8  Due Diligence.  RCBA shall be fully satisfied in its sole
               -------------                                            
discretion with the results of its review of, and its due diligence
investigations with respect to, the business, operations, affairs, prospects,
properties, assets, existing and potential liabilities, obligations, profits and
conditions (financial or otherwise) of Seller (including Exhibit 1.21 and the
Perini Disclosure Schedule).  RCBA shall be deemed to be so satisfied unless it
notifies Seller in writing at or prior to the expiration of the forty-five day
period provided in this Section that RCBA is terminating this Agreement because
it is not so satisfied.  For forty-five (45) days after the date on which this
Agreement is entered into, Seller shall (and shall cause each of the
Subsidiaries to) cooperate promptly and fully with RCBA or Purchaser's officers,
employees, counsel, accountants and other authorized representatives
("Representatives") and shall afford such Representatives reasonable access
during normal business hours to all of its (1) sites, properties, books,
contracts and records and personnel and advisers (who will be instructed by
Seller to cooperate) and (2) such additional financial and operating data and
other information as to its business and properties as RCBA may from time to
time reasonably request, including without limitation, access upon reasonable
request to Seller's  Representatives, major customers, vendors, suppliers and
creditors for due diligence inquiry and (3) Seller shall (and shall cause each
of the Subsidiaries to) furnish promptly to RCBA or Purchaser all information
concerning its business, properties and personnel as RCBA or Purchaser or their
Representatives may reasonably request during this 45-day period, provided that
any review will be conducted in a way that will not interfere unreasonably with
the conduct of Seller's business.  RCBA and Purchaser will keep all information
and documents obtained pursuant to this Section 3.8 on a confidential basis
subject to Section 7.17.

          3.9  Credit and Bonding Agreements.  Renegotiation and confirmation of
               -----------------------------                                    
all credit and bonding agreements between Seller and the parties listed on
Exhibit 3.9 shall have been accomplished in a manner reasonably satisfactory to
RCBA and Seller, including receipt by Seller of all necessary consents to the
Transaction Documents and the transactions contemplated therein.

          3.10 Legal Opinions. Seller shall have furnished to RCBA and Purchaser
               --------------                                                   
on the Closing Date the opinion of Goodwin, Procter & Hoar LLP, dated the
Closing Date, in form reasonably satisfactory to RCBA and Purchaser.

          3.11   Registration Rights Agreement.  Seller shall have executed and
                 -----------------------------                                 
delivered at the Closing the Registration Rights Agreement.

                                      -8-
<PAGE>
 
          3.12 Voting Agreement.  David B. Perini shall have used his best
               ----------------                                           
efforts to have the Perini Testamentary Trust and the David Perini Foundation
execute the Voting Agreement.  Purchaser, Seller, David B. Perini, Bart Perini,
Ronald Tutor and Tutor-Saliba Corporation and, if they so agree, Perini Memorial
Foundation and David B. Perini Testamentary Trust under the will of Louis R.
Perini shall each have executed the Voting Agreement substantially in the form
attached as Exhibit 3.12.

          3.13 Other.  Seller shall have furnished to RCBA and Purchaser such
               -----                                                         
executed and conformed copies of such certificates, letters and documents as the
RCBA and Purchaser may reasonably request and as are customary for transactions
such as those contemplated by this Agreement.

          3.14 HSR.  The waiting period under the Hart-Scott-Rodino Antitrust
               ---                                                           
Improvements Act of 1976, as amended (the "HSR Act") shall have expired or been
terminated, if applicable.


                                  ARTICLE IV
                 CONDITIONS PRECEDENT TO OBLIGATIONS OF SELLER

          The obligations of Seller to be discharged under this Agreement on or
prior to the Closing are subject to satisfaction of the following conditions at
or prior to the Closing (unless expressly waived in writing by Seller at or
prior to the Closing):

          4.1  Compliance by RCBA and Purchaser.  All of the terms, covenants
               --------------------------------                              
and conditions of this Agreement to be complied with and performed by either
RCBA or Purchaser at or prior to the Closing shall have been complied with and
performed by such entity in all material respects, and the representations and
warranties made by RCBA and Purchaser in this Agreement shall be true and
correct in all material respects at and as of the Closing, with the same force
and effect as though such representations and warranties had been made at and as
of the Closing, except for changes contemplated by this Agreement.

          4.2  No Legal Action.  No action, suit, investigation or other
               ---------------                                          
proceeding relating to the transactions contemplated hereby shall have been
instituted before or threatened by any Government Entity which presents a
substantial risk of the restraint or prohibition of the transactions
contemplated hereby or the obtaining of material damages or other material
relief in connection therewith.

          4.3  Opinion of Independent Investment Banking Firm.  Seller shall
               ----------------------------------------------               
have been advised in writing by J. P. Morgan Company and an independent
investment banking firm reasonably satisfactory to Seller (other than J. P.
Morgan Company), that in such banking firms' opinion, the Purchase Price is
fair, from a financial viewpoint, to the Seller and its stockholders.

                                      -9-
<PAGE>
 
          4.4  Employment Contracts.  David B. Perini, Richard J. Rizzo, John H.
               --------------------                                             
Schwartz, Bart Perini and Donald E. Unbekant shall have each signed employment
or other agreements with Seller reflecting the terms set forth in Exhibit 3.6 in
forms reasonably acceptable to both Seller and RCBA.

          4.5  American Stock Exchange. Seller shall have received satisfactory
               -----------------------                                         
assurance from the American Stock Exchange (the "Exchange"), in a form
reasonably satisfactory to Seller, that consummation of the transaction will not
cause Seller or any securities of the Seller already listed on the American
Stock Exchange to lose their listing privileges.
 
          4.6  Credit and Bonding Agreements.  Renegotiation and confirmation of
               -----------------------------                                    
all credit and bonding agreements between Seller and the parties listed on
Exhibit 3.9 shall have been accomplished in a manner reasonably satisfactory to
RCBA and Seller, including receipt by Seller of all necessary consents to the
Transaction Documents and the transactions contemplated therein.

          4.7  HSR.  The waiting period under the Hart-Scott-Rodino Antitrust
               ---                                                           
Improvements Act of 1976, as amended (the "HSR Act") shall have expired or been
terminated, if applicable.

          4.8  Legal Opinions. RCBA and Purchaser shall have furnished to Seller
               --------------                                                   
on the Closing Date the opinion of Wilmer, Cutler & Pickering, dated the Closing
Date, in form reasonably satisfactory to Seller.

          4.9  Current Ownership.  Except for Ronald Tutor and Tutor-Saliba,
               -----------------                                            
investors in Purchaser shall not include any Person that holds more than 1% of
Perini Stock without the prior written consent of Seller.


                                   ARTICLE V
                    REPRESENTATIONS AND WARRANTIES OF SELLER

          Except as set forth on the Perini Disclosure Schedule, Seller hereby
represents and warrants to RCBA and Purchaser as follows:

          5.1  Organization, Good Standing, Power, Authority, Etc.  Seller and
               --------------------------------------------------             
each of its Subsidiaries is a corporation  duly organized, validly existing and
in good standing under the laws of its state of incorporation.  Seller has the
full corporate power and authority to execute and deliver this Agreement and
each other Transaction Document and to perform its obligations under this
Agreement and each other Transaction Document.  Seller has taken all action
required by law, its Articles of Organization, its by-laws or otherwise required
to be taken by it to authorize the execution, delivery and performance by it of
this Agreement

                                      -10-
<PAGE>
 
and each other Transaction Document.  This Agreement is, and after the Closing
each other Transaction Document will be, a valid and binding obligation of
Seller, enforceable in accordance with its respective terms, except that such
enforcement may be subject to bankruptcy, insolvency, reorganization, moratorium
or other similar laws now or hereafter in effect relating to creditors' rights
and general principles of equity and except that rights to indemnity and
contribution may be limited by federal or state securities laws or policies
underlying such laws.  True and complete copies of the Articles of Organization
and bylaws of Seller as in effect on the date hereof are attached as Exhibit 5.1
hereto.

          5.2  Capitalization of Seller.
               ------------------------ 

               (a) After giving effect to the Certificate of Vote of Directors,
the authorized stock of Seller will at the Closing consist of: 15,000,000 shares
of Common Stock, of which at July 24, 1996, 4,847,853 shares were outstanding;
100,000 shares of $21.25 Convertible Exchangeable Preferred Stock, of which at
July 24, 1996, 100,000 share were outstanding; 200,000 shares of Series A Junior
Participating Cumulative Preferred Stock, par value $1.00 per share, none of
which shares were outstanding at July 22, 1996. Since March 31, 1996, the Seller
has only issued 117,174 shares of Common Stock in accordance with the terms of
its employee benefit plans as in existence on March 31, 1996, and 6,925 shares
of Common Stock in accordance with the quarterly payment of the annual retainer
portion of directors' fees, in all cases in the ordinary course of business and
in a manner and in amounts consistent with past practice.
 
               (b) All of the shares of Series B Cumulative Convertible
Preferred Stock issued at the Closing or issued as dividends pursuant to the
Articles of Organization and the Certificate of Vote of Directors will be duly
authorized, validly issued, fully paid and nonassessable and entitled to the
benefits of, and have the terms and conditions set forth in, the Articles of
Organization and the Certificate of Vote of Directors. The Conversion Shares
will be reserved and will be duly authorized for issuance and, when issued in
accordance with the Articles of Organization and the Certificate of Vote of
Directors, will be duly and validly issued, fully paid and nonassessable.

               (c) All outstanding shares of stock of Seller have been duly
authorized, are validly issued, fully paid and nonassessable, are free of
preemptive rights, were not issued in violation of the terms of any agreement or
other understanding binding upon or known to the Seller and have been issued in
compliance with all applicable federal and state securities or "blue sky" laws.
No further approval or authority of the shareholders or of the Board of
Directors of Seller will be required for the consummation by Seller of the
transactions contemplated by this Agreement and each of the other Transaction
Documents, except for approval of the Shareholder Meeting Matters at the
Shareholder Meeting.

          5.3  SEC Documents.  Each of the SEC Documents, as of the date of its
               -------------                                                   
filing with the SEC and as of the Closing, did not include any untrue statement
of a material

                                      -11-
<PAGE>
 
fact or omit to state any material fact necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading.

          5.4  Authority and Qualification of Seller.  Seller has the corporate
               -------------------------------------                           
power and authority to own, lease and operate its properties and to conduct its
business as described in the SEC Documents and as currently owned or leased and
conducted.  Seller is duly qualified to transact business as a foreign
corporation and is in good standing in each jurisdiction in which the conduct of
its business or its ownership, leasing or operation of property requires such
qualification, other than any failure to be so qualified or in good standing as
would not singly or in the aggregate with all such other failures reasonably be
expected to have a material adverse effect on the assets, liabilities, results
of operations, prospects or condition (financial or otherwise) of Seller and the
Subsidiaries taken as a whole (each a "Material Adverse Effect").

          5.5  Subsidiaries.  Exhibit 22 to Seller's Annual Report on Form 10-K
               ------------                                                    
for the year ended December 31, 1995 as filed with the SEC ("Annual Report") is
a true, accurate and correct statement of all of the information required to be
set forth in Exhibit 21 by the regulations of the SEC.  Each Subsidiary has been
duly incorporated or organized and is validly existing as a corporation or other
legal entity in good standing under the laws of the jurisdiction of its
incorporation or formation, has the corporate or other power and authority to
own, lease and operate its properties and to conduct its business as described
in the SEC Documents and as currently owned or leased and conducted and is duly
qualified to transact business as a foreign corporation or other legal entity
and is in good standing (if applicable) in each jurisdiction in which the
conduct of its business or its ownership, leasing or operation of property
requires such qualification, other than any failure to be so qualified or in
good standing as would not singly or in the aggregate with all such other
failures reasonably be expected to have a Material Adverse Effect.  Except as
disclosed in the SEC Documents filed with the SEC prior to the date of this
Agreement, all of the outstanding capital stock of each Subsidiary has been duly
authorized and validly issued, is fully paid and nonassessable and all capital
stock of Subsidiaries owned by Seller, directly or through Subsidiaries (other
than directors' qualifying shares), are free and clear of any mortgage, pledge,
lien, security interest, restriction upon voting or transfer, claim or
encumbrance of any kind ("Encumbrance") (other than such transfer restrictions
as may exist under federal and state securities laws), and there are no rights
granted to or in favor of any third party (whether acting in an individual,
fiduciary or other capacity) other than Seller to acquire any such capital
stock, any additional capital stock or any other securities of any Subsidiary.

          5.6  Outstanding Securities.  Except as set forth in the SEC Documents
               ----------------------                                           
filed with the SEC prior to the date of this Agreement and except as
contemplated by this Agreement, there are no outstanding (a) securities or
obligations of Seller convertible into or exchangeable for any capital stock of
Seller, (b) warrants, rights or options to subscribe for or purchase from Seller
any such capital stock or any such convertible or exchangeable

                                      -12-
<PAGE>
 
securities or obligations or (c) obligations of Seller to issue such shares, any
such convertible or exchangeable securities or obligations, or any such
warrants, rights or options.

          5.7    No Contravention, Conflict, Breach, Etc.  The execution,
                 ---------------------------------------                 
delivery and performance of each of this Agreement and each of the other
Transaction Documents by Seller and the consummation of the transactions herein
and therein contemplated will not (a) contravene any provision of the Articles
of Organization, by-laws or other organization documents of it or of any of the
Subsidiaries, or (b) conflict with or result in a breach or violation of any of
the terms and provisions of, or constitute a default under, or result in the
creation or imposition of any lien, charge or encumbrance upon any assets or
properties of it or of any of the Subsidiaries under, any statute, rule,
regulation, order or decree of any Government Entity having jurisdiction over it
or the Subsidiaries or any of its or their respective properties, assets or
operations, or any indenture, mortgage, loan agreement, note or other agreement
or instrument for borrowed money, any guarantee of any agreement or instrument
for borrowed money or any lease, permit, license or other agreement or
instrument to which it or any of the Subsidiaries is a party or by which it or
any such Subsidiary is bound or to which any of the properties, assets or
operations of it or any such Subsidiary is subject which conflict, breach,
violation, default, creation or imposition has, or will have, individually or in
the aggregate, a Material Adverse Effect.

          5.8  Consents.  No consent, approval, authorization, order,
               --------                                              
registration, filing or qualification of or with any (a) Government Entity or
(b) other third party (whether acting in an individual, fiduciary or other
capacity) is required for the consummation of the transactions contemplated by
this Agreement or by any of the other Transaction Documents to be performed by
Seller, except (i) shareholder approval at the Shareholder Meeting, (ii) such as
will have been obtained and made and will be in full force and effect as of the
Closing and (iii) such as may be required under the Act and state securities
laws in connection with the performance by Seller of its obligations under the
Registration Rights Agreement.

          5.9  No Existing Violation or Default.  Neither Seller nor any of the
               --------------------------------                                
Subsidiaries is in violation of (a) its charter, by-laws or other organization
documents or (b) any applicable law, ordinance, administrative or governmental
rule or regulation or (c) any order, decree or judgment of any Government Entity
having jurisdiction over Seller or any Subsidiary.  The properties, assets and
operations of Seller and the Subsidiaries are in compliance in all material
respects with all applicable federal, state, local and foreign laws, rules and
regulations, orders, decrees, judgments, permits and licenses relating to public
and worker health and safety.

                                      -13-
<PAGE>
 
          5.10   Environmental Matters.
                 --------------------- 

                 (a)  Compliance.
                      ---------- 

                      (i)  Seller and Subsidiaries are in compliance with all
applicable Environmental Laws except where the failure to comply does not have a
Material Adverse Effect.

                      (ii) Neither Seller nor any Subsidiary has received any
written communication from any Person or Government Entity that alleges that
Seller or any Subsidiary is not in compliance with applicable Environmental
Laws.

                 (b)  Environmental Permits. Seller and the Subsidiaries have 
                      ---------------------  
all Environmental Permits necessary for the conduct and operation of their
business, and all such permits are in good standing or, where applicable, a
renewal application has been timely filed and is pending agency approval, and
Seller and the Subsidiaries are in compliance with all terms and conditions of
all such Environmental Permits.

                 (c)  Environmental Claims.
                      -------------------- 

                      (i) There is no Environmental Claim pending or, to the
Knowledge of Seller, threatened against Seller or any Subsidiary, or against any
real or personal property or operation that Seller or any Subsidiary owns,
leases or manages, in whole or in part.

                     (ii) Neither Seller nor any Subsidiary has received notice
that Seller or any Subsidiary is liable for any response, removal,
investigative, or remedial costs under the Comprehensive Environmental Response,
Compensation, and Liability Act ("CERCLA"), 42 U.S.C. (S) 9601 et seq., or under
any similar state statute.

                    (iii) To the Knowledge of Seller, all Hazardous Materials
generated by Seller or any Subsidiary have been transported, stored, treated, or
disposed of by carriers or treatment, storage and disposal facilities authorized
or permitted under all applicable Environmental Laws.

                     (iv) (a) Seller and the Subsidiaries have fully complied
with all applicable provisions of any Environmental Laws that condition,
restrict or prohibit the transfer, sale, lease or closure of any property for
environmental reasons; (b) neither Seller nor any Subsidiary is required to
place any notice or restriction relating to the presence of Hazardous Materials
in any instrument or deed to any real property owned, leased or operated by it;
(c) no environmental lien has attached to any portion of the real property owned
or leased by Seller or any Subsidiary; and (d) no governmental actions have been
taken or are in progress that could subject any or all of the foregoing to any
such lien.

                                      -14-
<PAGE>
 
                 (d) Release of Hazardous Materials. To the Knowledge of Seller,
                     ------------------------------
there has not been any release of Hazardous Materials at or from any facility or
real property owned, operated or leased by Seller or any Subsidiary, except for
de minimis releases that would not reasonably be expected to give rise to
- -- ------- 
liability under the Environmental Laws.

                 (e) Underground Storage. To the Knowledge of Seller, there are
                     ------------------- 
not now any underground storage tanks on or at any real property leased or
operated by the Seller or any Subsidiary.

                 (f) Asbestos, PCBs, Etc.  To the Knowledge of Seller, no
                     ------------------- 
polychlorinated biphenyls ("PCBs"), asbestos-containing material ("ACM"), or
urea formaldehyde insulation is present at any of the real property currently
owned, leased or operated by Seller or any Subsidiary in such condition or under
such circumstances as would reasonably be expected to give rise to an
Environmental Claim, and Seller and the Subsidiaries have complied in all
material respects with all regulatory requirements relating to the storage,
removal, disposal or release, if any, of ACM or PCBs located on any real
property leased or operated by Seller or any Subsidiary.
 
                 (g) Environmental Subsidiary. As to the Environmental
                     ------------------------
Subsidiary, in addition to the other representations and warranties contained in
this Section 5.10:

                     (i) There are no claims, actions, causes of action, or
other written notices pending or, to the Knowledge of Seller, threatened against
Seller or any Subsidiary under the Environmental Laws, contract, common law or
otherwise, arising from the Environmental Subsidiary's provision of materials or
services to any Person or entity;

                    (ii) The Environmental Subsidiary is not listed as the
generator of any Hazardous Material on any waste manifest or other document
prepared pursuant to the Environmental Laws, contract or otherwise, and the
Environmental Subsidiary has not assumed, under the Environmental Laws, contract
or otherwise, the responsibilities or liabilities of the generator of any
Hazardous Material;

                   (iii) To the Knowledge of Seller, the Environmental
Subsidiary has not performed, and has not provided materials or services used in
the performance of, any remedial action taken pursuant to the Environmental
Laws, where the remedial action is not, or it is alleged by any Person or entity
that the remedial action is not, constructed and operating in accordance with
the Environmental Laws, contract and other applicable requirements; and

                    (iv) To the knowledge of Seller, there are no claims,
actions, causes of action, or other written notices pending or threatened
against Seller or any Subsidiary under the Environmental Laws, contract, common
law or otherwise, arising from the Environmental Subsidiary's provision of
materials or services to any Person or entity,

                                      -15-
<PAGE>
 
that are not subject to coverage under the Environmental Subsidiary's insurance
policies, except where such claims, actions, causes of action or other written
notice will not have a Material Adverse Effect.


           5.11  Licenses and Permits.  Seller and the Subsidiaries have such
                 --------------------                                        
certificates, permits, licenses, franchises, consents, approvals, orders,
authorizations and clearances from appropriate governmental agencies and bodies
("Licenses") as are necessary to own, lease or operate their properties and to
conduct their businesses in the manner described in the SEC Documents and as
currently owned or leased and conducted and all such Licenses are valid and in
full force and effect except such licenses which the failure to have or to be in
full force and effect individually or in the aggregate do not have a Material
Adverse Effect.  To Seller's Knowledge, after due inquiry, Seller and the
Subsidiaries are in compliance in all material respects with their respective
obligations under such Licenses, with such exceptions as individually or in the
aggregate do not have a Material Adverse Effect, and no event has occurred that
allows, or after notice or lapse of time would allow, revocation or termination
of such Licenses.

           5.12  Title to Properties.  Seller and the Subsidiaries have
                 -------------------                                   
sufficient title to all material properties (real and personal) owned by Seller
and the Subsidiaries which are necessary for the conduct of the business of
Seller and the Subsidiaries as described in the SEC Documents and as currently
conducted, free and clear of any Encumbrance that may materially interfere with
the conduct of the business of Seller and the Subsidiaries, taken as a whole,
and to the best of Seller's knowledge, after due inquiry, all material
properties held under lease by Seller or the Subsidiaries are held under valid,
subsisting and enforceable leases.

          5.13   Taxes.
                 ----- 

                 (a) Seller and each Subsidiary has (i) duly filed (or there
have been filed on its behalf) with the appropriate Government Entities all Tax
Returns required to be filed by it on or prior to the date hereof, all of which
such Tax Returns were correct and complete in all respects and (ii) duly paid in
full or made provision in accordance with generally accepted accounting
principles on the Closing Date Balance Sheet (or there has been paid or
provision has been made on its behalf) for the payment of all Taxes for all
periods ending through the date hereof;

                 (b) Seller and each Subsidiary has withheld and paid all taxes
required to have been withheld and paid in connection with amounts paid or owing
to any employee, independent contractor, creditor, stockholder or other third
party;

                                      -16-
<PAGE>
 
                 (c) no federal, state, local or foreign audits or other
administrative proceedings or court proceedings are presently pending with
regard to any Taxes or Tax Returns of Seller or any Subsidiary;

                 (d) the income Tax Returns of Seller and each Subsidiary have
been examined by the Internal Revenue Service and the applicable state or local
tax authorities for all periods through and including December 31, 1989 (or the
applicable statutes of limitation for the assessment of income Taxes for such
periods have expired), and no deficiencies were asserted as a result of such
examinations that have not been resolved and fully paid; neither Seller nor any
Subsidiary has granted any requests, agreements, consents or waivers to extend
the statutory period of limitations applicable to the assessment of any Taxes
for which Seller or any Subsidiary may be liable;

                 (e) there are no Tax liens outstanding against any assets,
properties or business of Seller or any Subsidiary;

                 (f) neither Seller nor any Subsidiary has filed a consent under
Section 341(f) of the Code to be treated as a collapsible corporation;

                 (g) neither Seller nor any Subsidiary has made any payments, is
obligated to make any payments or is a party to any agreement which under
certain circumstances could obligate it to make any payments which will not be
deductible under Section 280G of the Code;

                 (h) neither Seller nor any Subsidiary has been a member of an
affiliated group of corporations filing a consolidated federal income Tax Return
or has any liability for the Taxes of any person under Section 1.1502-6 of the
Treasury Regulations (or any similar provision of state, local or foreign law),
as a transferee or successor, by contract or otherwise;

                 (i) correct and complete copies of all income Tax Returns,
examination reports and statements of deficiencies assessed against or agreed to
by Seller or any Subsidiary since January 1, 1993 have been made available to
Purchaser and RCBA for their review;

                 (j) the aggregate unpaid Taxes of the Seller and Subsidiaries
did not, as of March 31, 1996, exceed the reserve for Tax liability (rather than
any reserve for deferred Taxes established to reflect timing differences between
book and Tax income) set forth in the most recent SEC Document, and the
aggregate unpaid Taxes of Seller and Subsidiaries do not exceed that reserve as
adjusted for payments and accruals made through the Closing Date in accordance
with the past custom and practice of Seller and Subsidiaries in filing their Tax
Returns; and

                                      -17-
<PAGE>
 
                 (k) neither Seller nor any Subsidiary is a party to any tax
sharing, tax indemnity or other agreement or arrangement relating to Taxes with
any Person.

          5.14 Litigation.  Except as set forth in SEC Documents filed with the
               ----------                                                      
SEC prior to the date of this Agreement, there are no pending actions, suits,
proceedings, arbitrations or investigations against or affecting Seller or any
of the Subsidiaries or any of their respective properties, assets or operations,
or with respect to which Seller or any of the Subsidiaries is responsible by way
of indemnity or otherwise, that are required under the Exchange Act to be
described in such SEC Documents, that questions the validity of this Agreement
or any of the other Transaction Documents or any action to be taken pursuant to
this Agreement or any of the other Transaction Documents, or that would singly
or in the aggregate, with all such other actions, suits, investigations or
proceedings, reasonably be expected to have, individually or in the aggregate, a
Material Adverse Effect, or could reasonably be expected to have a material
adverse effect on the ability of Seller to perform its obligations under this
Agreement or any of the other Transaction Documents; and, to the best Knowledge
of Seller, after due inquiry, except as set forth in SEC Documents filed with
the SEC prior to the date of this Agreement, no such actions, suits, proceedings
or investigations are threatened or contemplated and there is no basis for any
such action, suit, proceeding or investigation.

          5.15 Labor Matters.
               ------------- 

               (a) Neither Seller nor any Subsidiary is engaged in any unfair
labor practices as defined in the National Labor Relations Act or other
applicable law, ordinance or regulation, and Seller and each Subsidiary is in
compliance in all material respects with all applicable laws respecting
employment and employment practices, terms and conditions of employment, wages,
hours of work and occupational safety and health;

               (b) there is no unfair labor practice charge or complaint pending
or threatened against Seller or any Subsidiary before the National Labor
Relations Board nor is there any grievance or any arbitration proceeding arising
out of or under collective bargaining agreements pending or threatened, and
there is no basis for any such charge, complaint or grievance;

               (c) there is no labor strike, lockout, slow-down, employment
related arbitration, or work stoppage pending or threatened against Seller or
any Subsidiary;

               (d) neither Seller nor any Subsidiary has experienced any
significant work stoppage nor has Seller or any Subsidiary been a party to any
proceedings before the National Labor Relations Board for the past three years
or been a party to any arbitration proceeding arising out of or under collective
bargaining agreements for the past three years;

                                      -18-
<PAGE>
 
               (e) there is no charge or compliance proceeding actually pending
or threatened against Seller or any Subsidiary before the Equal Employment
Opportunity Commission or any state, local or foreign agency responsible for the
prevention of unlawful employment practices; and

               (f) neither Seller nor any Subsidiary has received notice of the
intent of any Government Entity responsible for the enforcement of labor or
employment laws to conduct an investigation, and no such investigation is in
progress.

          5.16 No Illegal or Improper Transactions.  Neither Seller nor any
               -----------------------------------                         
Subsidiary has, nor, to the Knowledge of Seller, has any director, officer or
employee of Seller or any Subsidiary, directly or indirectly, used funds or
other assets of Seller or any Subsidiary, or made any promise or undertaking in
such regard, for (a) illegal contributions, gifts, entertainment or other
expenses relating to political activity; (b) illegal payments to or for the
benefit of governmental officials or employees, whether domestic or foreign; (c)
illegal payments to or for the benefit of any Person, or any director, officer,
employee, agent or representative thereof; or (d) the establishment or
maintenance of a secret or unrecorded fund; and, to the Knowledge of Seller,
there have been no false or fictitious entries made in the books or records of
Seller or any Subsidiary.

          5.17 Contracts.  All of Seller's material contracts that are required
               ---------                                                       
to be described in the SEC Documents or to be filed as exhibits thereto are
described in the SEC Documents or filed as exhibits thereto and are in full
force and effect.  Neither Seller nor any of the Subsidiaries nor, to the best
knowledge of Seller, any other party is in breach of or default under any such
contracts except for such breaches and defaults as in the aggregate have not had
and would not have a Material Adverse Effect.

          5.18 Finder's Fees.  Except as set forth on the Perini Disclosure
               -------------                                               
Schedule, no broker, finder or other party is entitled to receive from Seller,
any of the Subsidiaries or any other Person any brokerage or finder's fee or any
other fee, commission or payment as a result of the transactions contemplated by
this Agreement.

          5.19 Financial Statements.  The audited consolidated financial
               --------------------                                     
statements and related schedules and notes included in the SEC Documents comply
in all material respects with the requirements of the Exchange Act and the Act
and the rules and regulations of the SEC thereunder, were prepared in accordance
with generally accepted accounting principles consistently applied throughout
the period involved and fairly present the financial condition, results of
operations, cash flows and changes in stockholders' equity of the Seller and the
Subsidiaries at the dates and for the periods presented.  The unaudited
quarterly consolidated financial statements and the related notes included in
the SEC Documents present fairly the financial condition, results of operations
and cash flows of Seller and the Subsidiaries at the dates and for the periods
to which they relate, subject to year-end audit adjustments (consisting only of
normal recurring accruals), have been prepared in accordance with

                                      -19-
<PAGE>
 
generally accepted accounting principles applied on a consistent basis except as
otherwise stated therein and have been prepared on a basis substantially
consistent with that of the audited financial statements referred to above
except as otherwise stated therein.

          5.20   Employee Benefit Plans; ERISA.
                 ----------------------------- 

                 (a) Schedule 5.20(a) lists each Seller Plan. Seller has
heretofore made available to Purchaser, if applicable, true and complete copies
of each of the following documents: (i) a copy of each such Seller Plan
(including all amendments thereto) or a description of each unwritten plan; (ii)
a copy of the Forms 5500 filed with the Internal Revenue Service with respect to
each such Seller Plan for the last two years; (iii) a copy of the actuarial
report, if any, with respect to each such Seller Plan for the last two years;
(iv) if the Seller Plan is funded through a trust or any third party funding
vehicle, a copy of the trust or other funding agreement (including all
amendments thereto) and the latest financial statements thereof; (v) the most
recent determination letter received from the Internal Revenue Service with
respect to each Seller Plan that is intended to be qualified under Section 401
of the Code; (vi) the most recent summary plan description; and (vii) any forms
filed with Pension Benefit Guaranty Corporation and any Forms 5310 or 5330 filed
with the Internal Revenue Service within the last three years.

                 (b) (i) none of the Seller Plans is or has been subject to
Title IV of the Employee Retirement Income Security Act of 1974, as amended
("ERISA"), (ii) there is no outstanding or contingent liability under Title IV
of ERISA with respect to any Seller Plan; (iii) full and timely payment has been
made of all amounts that Seller and each Subsidiary are required to pay as a
contribution to the Seller Plans; (iv) each of the Seller Plans that is intended
to be "qualified" within the meaning of Section 401(a) of the Code is so
qualified; and (v) no Seller Plan provides benefits, including, without
limitation, death or medical benefits (whether or not insured), with respect to
current or former employees of Seller or any Subsidiary beyond their retirement
or other termination of service (other than (1) coverage mandated by Section
4980B of the Code or state health continuation laws, (2) death benefits or
retirement benefits under any funded "employee pension benefit plan," as that
term is defined in Section 3(2) of ERISA, which is a qualified plan under
Section 401(a) of the Code, and (3) deferred compensation, severance, vacation
or other welfare benefits accrued and identified as liabilities on the books of
Seller and Subsidiaries).

                 (c) Neither Seller nor any of its ERISA Affiliates is
contributing to or is obligated to contribute to a Multiemployer Pension Plan
nor does Seller or any Subsidiary have any outstanding liability with respect to
any Multiemployer Pension Plan. Neither the Seller nor any of its ERISA
Affiliates has incurred or expects to incur any liability, except for ongoing
funding obligations, under Title IV of ERISA with respect to any Multiemployer
Pension Plan.

                                      -20-
<PAGE>
 
                 (d) Neither Seller nor any Subsidiary has, since January 1,
1996, made any commitment (i) to create any additional Seller Plan or to modify
in any material respect any existing Seller Plan covering employees engaged in
its businesses or (ii) to create or modify in any material respect any salary,
bonus, and/or profit-sharing arrangement covering such employees.

                 (e) Neither Seller nor any Subsidiary and no Seller Plan (nor
any trust created thereunder nor any trustee or administrator thereof) has
engaged in any transaction, taken any action, or failed to take any action in
connection with which Seller or any Subsidiary could be subject (whether
directly or indirectly or as indemnitor) to any liability (whether actual or
contingent) or material civil penalty assessed pursuant to Sections 409, 502(c),
502(i), 502(l), or 4071 of ERISA or material tax or material penalty imposed
pursuant to Sections 4971, 4972, 4975 to 4980A, or 5000 of the Code. All returns
and reports that were required to be filed with any Government Entity with
respect to Seller Plans have been filed on a timely basis and were correct and
complete in all material respects.

                 (f) There are no pending, threatened, or anticipated claims
(other than routine claims for benefits) by, on behalf of, or against any Seller
Plan. No Seller Plan is presently under audit or examination (nor has notice
been received of a potential audit) by the Internal Revenue Service, the
Department of Labor, or Pension Benefit Guaranty Corporation, nor are there any
matters pending with respect to any Seller Plan with the Internal Revenue
Service under its Voluntary Compliance Resolution program, its Closing Agreement
Program, or other similar programs.

                 (g) Each Seller Plan has been operated in all material respects
in accordance with its terms and with applicable Law.

                 (h) Except for ongoing funding obligations, no liability under
Title IV of ERISA has been or is expected to be incurred by Seller or any
Subsidiary with respect to any ongoing, frozen or terminated "single-employer
plan," within the meaning of Section 4001(a)(15) of ERISA (a "Title IV Pension
Plan"), currently or formerly maintained by any of them, or any single-employer
plan (an "ERISA Affiliate Plan") of any entity that is considered one employer
with the Seller under Section 4001 of ERISA or Section 414 of the Code (an
"ERISA Affiliate"). Neither any Seller Plan which is a funded employee pension
benefit plan ("Pension Plan") nor any ERISA Affiliate Plan has an "accumulated
funding deficiency" (whether or not waived) within the meaning of Section 412 of
the Code or Section 302 of ERISA. Neither Seller nor any Subsidiary has
provided, or is required to provide, security to any Pension Plan or to any
ERISA Affiliate Plan pursuant to Section 401(a)(29) of the Code. Neither Seller
nor any ERISA Affiliate is, or, within the last seven years has been, a
participating employer under a multiple employer plan within the meaning of
Section 4063 or 4064 of ERISA.

                                      -21-
<PAGE>
 
                 (i) Except for the Employment Contracts referenced in Section
3.6, the consummation of the transactions contemplated by this Agreement will
not (i) entitle any employee to severance pay, unemployment compensation or any
other payment or (ii) accelerate the timing of any payment or the vesting of any
rights or increase the amount of any compensation due any employee or former
employee. Each Seller Plan may be unilaterally amended or terminated without
liability except as to benefits accrued thereunder prior to the amendment or
termination.

          5.21 Contingent Liabilities.  Except as fully reflected or reserved
               ----------------------                                        
against in the financial statements included in the Annual Report or the
Quarterly Report, or disclosed in the footnotes contained in such financial
statements, Seller and Subsidiaries had no liabilities (including tax
liabilities) at the date of such financial statements, absolute or contingent,
that were material either individually or in the aggregate to Seller and
Subsidiaries taken as a whole.  Except as so reflected, reserved, or disclosed,
Seller and  Subsidiaries have no commitments which are materially adverse either
individually or in the aggregate to Seller and Subsidiaries taken as a whole.

          5.22 No Material Adverse Change.  Since the latest date as of which
               --------------------------                                    
information with respect to the following items is given in the SEC Documents
filed prior to July 24, 1996 and except as contained in the Transaction
Documents and the transactions contemplated therein, there has not been:

               (a) any change that by itself or together with other changes has
a Material Adverse Effect; or

               (b) any damage, destruction or loss (whether or not covered by
insurance) materially adversely affecting the properties or business of Seller;
or

               (c) except as provided for in this Agreement and the other
Transaction Documents, any change in the authorized capital of Seller or in its
outstanding securities or any change in its ownership interests or any grant of
any options, warrants, calls, conversion rights or commitments; or

               (d) any declaration or payment of any dividend or distribution in
respect of the capital stock or any direct or indirect redemption, purchase or
other acquisition of any of the capital stock of Seller; or

               (e) any increase in the compensation, bonus, sales commissions or
fee arrangements payable or to become payable by Seller to any of its officers
directors, stockholders, employees, consultants or agents, except for ordinary
and customary bonuses and salary increased for employees in accordance with past
practice; or

                                      -22-
<PAGE>
 
                 (f) any work interruptions, labor grievances or claims filed,
or any similar event or condition of any character, materially adversely
affecting the business or future prospects of Seller; or

                 (g) any sale or transfer, or any agreement to sell or transfer,
any material assets property or rights of Seller to any person; or

                 (h) any cancellation, or agreement to cancel, any indebtedness
or other obligation owing to Seller, provided that Seller may negotiate and
                                     --------
adjust bills in the course of good faith disputes with customers in a manner
consistent with past practice; or

                 (i) any plan, agreement or arrangement granting any
preferential rights to purchase or acquire any interest in any of the assets,
property or rights of Seller or requiring consent of any party to the transfer
and assignment of any such assets, property or rights; or

                 (j) any purchase or acquisition of, or agreement, plan or
arrangement to purchase or acquire, any property, rights or assets outside of
the ordinary course of business of Seller; or

                 (k) any waiver of any material rights or claims of Seller; or

                 (l) any material breach, amendment or termination of any
material contract, agreement, license, permit or other right to which Seller is
a party; or

                 (m) any transaction by Seller outside the ordinary course of
business; or

                 (n) any capital expenditures or commitment by Seller, either
individually or in the aggregate, exceeding $5,000,000.00; or

                 (o) any change in accounting methods or practices (including
any change in depreciation or amortization policies or rates) by Seller or the
revaluation by Seller of any of its assets; or

                 (p) any creation or assumption by Seller of any mortgage,
pledge, security interest or lien or other encumbrance on any asset (other than
liens arising under existing lease financing arrangements which are not material
and liens for taxes not yet due and payable); or

                 (q) any entry into, amendment of, relinquishment, termination
or non-renewal by Seller of any contract, lease transaction, commitment or other
right or obligation that would have a Material Adverse Effect; or

                                      -23-
<PAGE>
 
                 (r) any loan by Seller to any person or entity, incurring by
Seller, of any indebtedness, guaranteeing by Seller of any indebtedness,
issuance or sale of any debt securities of Seller or guaranteeing of any debt
securities of others; or

                 (s) the commencement or notice or threat of commencement of any
lawsuit or proceeding against or investigation of Seller or any of its affairs;
or

                 (t) negotiation or agreement by Seller or any officer or
employee thereof to do any of the things described in the preceding clauses (a)
through (s) (other than negotiations with RCBA and its representatives regarding
the transactions contemplated by this Agreement).

          5.23   Investment Company.  Seller is not an "investment company"
                 ------------------                                        
within the meaning of the Investment Company Act of 1940, as amended.

          5.24   Exemption from Registration; Restrictions on Offer and Sale of
                 --------------------------------------------------------------
Same or Similar Securities.  Assuming the representations and warranties of RCBA
- --------------------------                                                      
and Purchaser set forth in Article VI hereof are true and correct in all
material respects, the offer and sale of the Shares made pursuant to this
Agreement will be exempt from the registration requirements of the Act.  Neither
Seller nor any Person acting on its behalf has, in connection with the offering
of the Shares, engaged in (a) any form of general solicitation or general
advertising (as those terms are used within the meaning of Rule 502(c) under the
Act), (b) any action involving a public offering within the meaning of Section
4(2) of the Act, or (c) any action which would require the registration of the
offering and sale of the Shares pursuant to this Agreement under the Act or
which would violate applicable state securities or "blue sky" laws.  Seller has
not made and will not make, directly or indirectly, any offer or sale of Shares
or of securities of the same or a similar class as the Shares if as a result the
offer and sale of Shares contemplated hereby could fail to be entitled to
exemption from the registration requirements of the Act.  As used herein, the
terms "offer" and "sale" have the meanings specified in Section 2(3) of the Act.

          5.25   Disclosure.  No representation or warranty concerning the
                 ----------                                               
Seller or any Subsidiary in this Agreement or any Exhibit or Schedule hereto, or
contained in any certificate or instrument delivered or to be delivered by or on
behalf of Seller or any Subsidiaries pursuant to this Agreement, contains or
will contain an untrue statement of material fact, or omits or will omit to
state a material fact necessary to make the statements contained herein or
therein, in light of the circumstances in which they were made, not misleading.

                                      -24-
<PAGE>
 
                                  ARTICLE VI
                        REPRESENTATIONS AND WARRANTIES
                             OF RCBA AND PURCHASER

          RCBA and Purchaser each hereby represents and warrants to Seller that:

          6.1  Organization, Good Standing, Power, Authority, Etc.  Each of RCBA
               --------------------------------------------------               
and Purchaser has the full power and authority to execute and deliver this
Agreement and the Registration Rights Agreement, and to perform its obligations
under this Agreement and the Registration Rights Agreement.  Each of RCBA and
Purchaser has taken all action required by law, its charter, its by-laws or
otherwise required to be taken by it to authorize the execution and delivery of
this Agreement and the Registration Rights Agreement and the consummation of the
transactions contemplated to be performed by it hereby and thereby.  Each of
this Agreement and the Registration Rights Agreement is a valid and binding
agreement of RCBA and Purchaser, enforceable in accordance with its respective
terms, except that such enforcement may be subject to bankruptcy, insolvency,
reorganization, moratorium or other similar laws now or hereafter in effect
relating to creditors' rights and general principles of equity and except to the
extent that rights to indemnity and contribution may be limited by federal or
state securities laws or policies underlying such laws.

          6.2  No Conflicts; No Consents.  Neither the execution and delivery of
               -------------------------                                        
this Agreement and the Registration Rights Agreement nor the consummation by
Purchaser of the purchase contemplated hereby will (i) conflict with, or result
in a breach of, any provision of its partnership agreement or (ii) violate any
statute or law or any judgment, order, writ, injunction, decree, rule or
regulation applicable to RCBA or Purchaser.  No consent, authorization or
approval of, or declaration, filing or registration with, or exemption by, any
governmental or regulatory authority is required in connection with the
execution and delivery of, and the performance by RCBA or Purchaser of their
obligations under, this Agreement or the Registration Rights Agreement or the
consummation by RCBA or  Purchaser of the transactions to be performed by it as
contemplated hereby and thereby.

          6.3  Investment Intent, Etc.  Purchaser (a) has such knowledge,
               ----------------------                                    
sophistication and experience in business and financial matters that it is
capable of evaluating the merits and risks of an investment in the Shares, (b)
fully understands the nature, scope and duration of the limitations on transfer
contained in this Agreement, (c) can bear the economic risk of an investment in
the Shares and can afford a complete loss of such investment, and (d) is
purchasing the Shares for investment and not with a view to, or for a sale in
connection with, any public distribution in violation of the Act.  Such
Purchaser acknowledges (y) receipt of the SEC Documents filed with the SEC prior
to the date of this Agreement and (z) that such Purchaser has been afforded the
opportunity to ask such questions as it has deemed necessary of, and to receive
answers from, representatives of Seller concerning the merits and risks of
investing in the Shares, and to obtain such additional information that Seller
possesses or can acquire without unreasonable effort or

                                      -25-
<PAGE>
 
expense that is necessary to verify the accuracy and completeness of the
information contained in such SEC Documents.

          6.4  Litigation.  There is no claim, suit, action, proceeding or
               ----------                                                 
investigation (whether at law or equity, before or by any Government Entity or
before any arbitrator) pending or, to the knowledge of RCBA or Purchaser,
threatened against or affecting RCBA or Purchaser, the outcome of which would in
any manner impair the ability of RCBA or Purchaser to perform its obligations
hereunder or against the transactions contemplated by this Agreement.

          6.5  Certain Fees.  Neither RCBA nor Purchaser has entered into, nor
               ------------                                                   
will enter into, during the term of this Agreement, any agreement, arrangement
or understanding with any Person that will result in the obligation of Seller to
pay any finder's fee, brokerage commission or similar payment in connection with
the transactions contemplated hereby.

          6.6  Financial Ability.  Purchaser is financially capable and has, or
               -----------------                                               
will have upon the Closing Date, sufficient cash and other resources available
to complete the transactions contemplated by this Agreement upon the terms and
conditions set forth in this Agreement.



                                  ARTICLE VII
                           COVENANTS OF THE PARTIES
                                        
          7.1  Restrictive Legends.  Purchaser covenants and agrees with Seller
               -------------------                                             
that Purchaser will not dispose of any of Purchaser's shares of Series B
Cumulative Convertible Preferred Stock or Conversion Shares (unless, with
respect to such Conversion Shares, such Conversion Shares were previously issued
pursuant to an effective registration statement under the Act) except pursuant
to (a) an effective registration statement under the Act or (b) an applicable
exemption from registration under the Act.  In connection with any sale by
Purchaser pursuant to clause (b) of the preceding sentence, Purchaser shall
furnish to Seller an opinion of counsel reasonably satisfactory to Seller to the
effect that such exemption from registration is available in connection with
such sale.

          7.2  Executive Committee.  Seller shall, immediately upon the issuance
               -------------------                                              
of the Shares, reconstitute its Executive Committee such that:

          (a) the Executive Committee shall have five voting members, three of
whom shall be designated directors of Seller by the Purchaser of Series B
Cumulative Convertible Preferred Stock and two of whom shall be David B. Perini
and/or such other director(s) as may be designated by the Board of Directors of
Seller (excluding directors designated by the holders of the Series B Cumulative
Convertible Preferred Stock pursuant to

                                      -26-
<PAGE>
 
the Certificate of Vote of Directors); provided, however, that the holders of
                                       --------  -------                     
Series B Cumulative Convertible shall not be entitled to designate any greater
number of members of the Executive Committee than the number which they are
entitled to designate pursuant to the terms of the Certificate of Vote of
Directors, and

               (b) the Executive Committee shall meet regularly and as needed,
in Person or by telephone, and

               (c) the Board of Directors shall delegate to the Executive
Committee its power set forth in Section 4 of Seller's by-laws to oversee and
direct the CEO of Seller, and

               (d) the Board of Directors shall have adopted the Bylaw
Amendments as set forth in Exhibit 1.6 to prevent the modification of the powers
of the Executive Committee set forth in this Section 7.2 and/or the dissolution
of the Executive Committee, and

               (e) the provisions of this Section shall terminate and be of no
further force and effect when and if the holders of Series B Cumulative
Convertible Preferred Stock shall not be entitled to designate more than one
director pursuant to the terms of the Certificate of Vote of Directors.

          7.3  Seller's Board of Directors.   Seller shall, immediately upon
               ---------------------------                                  
issuance of the Shares, expand its Board of Directors by three members ("New
Directors"), one of whom shall be a Class I director, another of whom shall be a
Class II director and the third of whom shall be a Class III director, shall
appoint persons designated by Purchaser to these three directorships, and shall
not remove such New Directors without cause.  For so long as Purchaser is
entitled to nominate at least one Designated Director (as defined in the
Certificate of Vote of Directors) pursuant to the Certificate of Vote of
Directors, Seller shall appoint a Designated Director to the Audit Committee,
the Nominating Committee, and the Compensation Committee.

          7.4  Perini Disclosure Schedule.  Within twenty (20) days of the date
               --------------------------                                      
on which this Agreement is entered into, Seller shall provide a disclosure
schedule disclosing with specificity all matters which are inconsistent with
Seller's representations and warranties set forth in Article V ("Perini
Disclosure Schedule"); the parties agree that the Perini Disclosure Schedule
shall become part of this Agreement.  Seller agrees that RCBA shall have the
right to terminate this Agreement if it is not, in its sole discretion,
satisfied with the Perini Disclosure Schedule.  RCBA shall be deemed to be
satisfied with the Perini Disclosure Schedule unless it notifies Seller in
writing within ten (10) days of the receipt of such Perini Disclosure Schedule
that RCBA is terminating this Agreement because it is not so satisfied.

                                      -27-
<PAGE>
 
          7.5  Certificates for Shares and Conversion Shares To Bear Legends.
               ------------------------------------------------------------- 

               (a) So long as the shares of Series B Cumulative Convertible
Preferred Stock are Transfer Restricted Securities, they shall be subject to a
stop-transfer order and the certificate or certificates therefor shall bear the
following legend by which each holder thereof shall be bound:

          "THE SHARES REPRESENTED BY THIS CERTIFICATE AND ANY SECURITIES
          ISSUABLE UPON CONVERSION OR EXCHANGE HEREOF MAY NOT BE OFFERED OR SOLD
          EXCEPT PURSUANT TO (i) AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
          SECURITIES ACT OF 1933, OR (ii) AN APPLICABLE EXEMPTION FROM
          REGISTRATION THEREUNDER.  ANY SALE PURSUANT TO CLAUSE (ii) OF THE
          PRECEDING SENTENCE MUST BE ACCOMPANIED BY AN OPINION OF COUNSEL
          REASONABLY SATISFACTORY TO PERINI CORPORATION TO THE EFFECT THAT SUCH
          EXEMPTION FROM REGISTRATION IS AVAILABLE IN CONNECTION WITH SUCH SALE.
          IN ADDITION, THE VOTING, SALE, ASSIGNMENT, TRANSFER, PLEDGE OR
          HYPOTHECATION OF THE SHARES REPRESENTED BY THIS CERTIFICATE IS FURTHER
          SUBJECT TO RESTRICTIONS WHICH ARE CONTAINED IN THE ARTICLES OF
          ORGANIZATION, AS AMENDED, OF PERINI CORPORATION, IN THE CERTIFICATE OF
          VOTE OF DIRECTORS GOVERNING THESE SHARES AND IN A STOCK PURCHASE
          AGREEMENT DATED AS OF JULY 24, 1996, A COPY OF EACH OF WHICH IS ON
          FILE WITH PERINI CORPORATION AND WILL BE FURNISHED BY THE CORPORATION
          TO THE STOCKHOLDER ON REQUEST AND WITHOUT CHARGE."

               (b) So long as the Conversion Shares are Transfer Restricted
Securities, they shall, unless previously issued pursuant to an effective
registration statement under the Act, be subject to a stop-transfer order and
the certificate or certificates representing any such Conversion Shares shall
bear the following legend by which each holder thereof shall be bound:

          "THE SHARES REPRESENTED BY THIS CERTIFICATE AND ANY SHARES OR OTHER
          SECURITIES ISSUABLE UPON EXCHANGE HEREOF MAY NOT BE OFFERED OR SOLD
          EXCEPT PURSUANT TO (i) AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
          SECURITIES ACT OF 1933, OR (ii) AN APPLICABLE EXEMPTION FROM
          REGISTRATION THEREUNDER.  ANY SALE PURSUANT TO CLAUSE (ii) OF THE
          PRECEDING SENTENCE MUST BE ACCOMPANIED BY AN OPINION OF COUNSEL
          REASONABLY SATISFACTORY TO PERINI CORPORATION TO THE EFFECT THAT

                                      -28-
<PAGE>
 
          SUCH EXEMPTION FROM REGISTRATION IS AVAILABLE IN CONNECTION WITH SUCH
          SALE.  IN ADDITION, THE VOTING, SALE, ASSIGNMENT, TRANSFER, PLEDGE OR
          HYPOTHECATION OF THE SHARES REPRESENTED BY THIS CERTIFICATE IS FURTHER
          SUBJECT TO RESTRICTIONS WHICH ARE CONTAINED IN THE ARTICLES OF
          ORGANIZATION, AS AMENDED, OF PERINI CORPORATION AND IN A STOCK
          PURCHASE AGREEMENT DATED AS OF JULY 24, 1996, A COPY OF EACH OF WHICH
          IS ON FILE WITH PERINI CORPORATION AND WILL BE FURNISHED BY THE
          CORPORATION TO THE STOCKHOLDER ON REQUEST AND WITHOUT CHARGE."

          7.6  Removal of Legends.  After termination of the requirement that
               ------------------                                            
all or part of such legend be placed upon a certificate, Seller shall, upon
receipt by Seller of evidence reasonably satisfactory to it that such
requirement has terminated and upon the written request of the holders of
Conversion Shares issue certificates for the Conversion Shares that do not bear
such legend.

          7.7  Pre-Closing Activities.  From and after the date of this
               ----------------------                                  
Agreement until the Closing, each of Seller, RCBA and Purchaser shall act with
good faith towards, and shall use commercially reasonable efforts to consummate,
the transactions contemplated by this Agreement, and none of Seller, RCBA, or
Purchaser will take any action that would prohibit or impair its ability to
consummate the transactions contemplated by this Agreement.

          7.8  Information.  So long as any of the Series B Cumulative
               -----------                                            
Convertible Preferred Stock or the Conversion Shares are outstanding, Seller
shall file with the SEC the annual reports and quarterly reports and the
information, documents and other reports that are required to be filed with the
SEC pursuant to Sections 13 and 15 of the Exchange Act, whether or not Seller
has or is required to have a class of securities registered under the Exchange
Act and whether or not Seller is then subject to the reporting requirements of
the Exchange Act, at the time Seller is or would be required to file the same
with the SEC and, promptly after Seller is or would be required to file such
reports, information or documents with the SEC, to mail copies of such reports,
information and documents to the holders of the Series B Cumulative Convertible
Preferred Stock and the Conversion Shares at their addresses set forth in the
register of  Shares and Conversion Shares maintained by the transfer agent
therefor.

          7.9  Shareholder Meeting.  In connection with the next meeting of the
               -------------------                                             
shareholders of Seller ("Shareholder Meeting"), Seller shall recommend, and
shall use commercially reasonable efforts (including the preparation and
circulation of the Proxy Statement) to obtain, the approval of such holders for
the Transaction Documents, and the transactions contemplated by the Transaction
Documents, and the ratification of the Bylaw Amendments (such items the
"Shareholder Meeting Matters").

                                      -29-
<PAGE>
 
          7.10   Proxy Statement.  Seller covenants that the Proxy Statement
                 ---------------                                            
will not include any untrue statement of a material fact, or omit to state any
material fact, necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading; provided, however,
                                                          --------  ------- 
Seller's covenant shall not encompass any information in the Proxy Statement
that was furnished in writing to the Seller by or on behalf of Purchaser or RCBA
for use specifically in connection with the preparation of the Proxy Statement.
The Proxy Statement shall not be filed, and no amendment or supplement to the
Proxy Statement shall be made, without consultation with RCBA and Purchaser.
Seller shall notify RCBA and Purchaser promptly of the receipt by it of any
comments from the SEC or its staff and of any request by the SEC for amendments
or supplements to the  Proxy Statement and shall supply RCBA and Purchaser with
copies of all correspondence between it and its representatives, on the one
hand, and the SEC or the members of its staff, on the other hand, with respect
to the Proxy Statement.

          7.11   Registration Rights.  Subject to approval by the shareholders
                 -------------------                                          
of Seller, Conversion Shares shall be Registrable Securities, as defined in the
Registration Rights Agreement, and the holders of such Conversion Shares shall
be entitled to the rights of such a holder under the Registration Rights
Agreement.

          7.12   Stock Exchange Listing.  Subsequent to approval by the
                 ----------------------                                
shareholders of the Seller of the Shareholder Meeting Matters at the
Shareholders Meeting, Seller shall take all steps necessary to ensure that the
Conversion Shares are approved for listing, subject to notice of issuance by the
American Stock Exchange and any other securities exchange on which the Common
Stock is listed.

          7.13   HSR.  To the extent applicable, Seller, RCBA and Purchaser
                 ---                                                       
shall make all filings and furnish all information required with respect to the
transactions contemplated by this Agreement by the HSR Act and shall use their
best efforts to obtain the early termination of the waiting period thereunder,
provided that neither Seller, RCBA nor Purchaser shall be required to agree to
dispose of or hold separate any portion of its business or assets.

          7.14   Acquisition Proposals.
                 --------------------- 

                 (a) Prior to the Closing, Seller agrees that neither Seller nor
any Subsidiary nor any of the respective officers and directors of Seller or any
of the Subsidiaries shall, and Seller shall direct and use its best efforts to
cause its employees, agents and representatives (including, without limitation,
any investment banker, attorney or accountant retained by Seller or any
Subsidiary) not to, initiate, solicit or encourage, directly or indirectly, any
inquiries or the making of any proposal or offer (including, without limitation,
any proposal or offer to stockholders of Seller) with respect to a merger,
consolidation or similar transaction involving, or any purchase of all or any
substantial portion of the assets or any equity securities of, Seller or any of
the Subsidiaries (any such

                                      -30-
<PAGE>
 
proposal or offer being hereinafter referred to as an "Acquisition Proposal") or
engage in any negotiations concerning, or provide any confidential information
or data to, or have any discussions with, any Person relating to an Acquisition
Proposal, or otherwise facilitate directly or indirectly any effort or attempt
to make or implement an Acquisition Proposal; and

               (b)  Seller will immediately cease and cause to be terminated any
existing activities, discussions or negotiations with any parties conducted
heretofore with respect to any of the foregoing.  Seller will take the necessary
steps to inform the individuals or entities referred to in the first sentence
hereof of the obligations undertaken in this subsection 7.14(b).  Seller will
notify RCBA and Purchaser immediately if any such inquiries or proposals are
received by, any such information is requested from, or any such negotiations or
discussions are sought to be initiated or continued with RCBA and Purchaser.
Nothing contained in this Agreement shall prohibit Seller and its directors from
(i) pursuing Acquisition Proposals if, in the exercise of Seller's directors'
good faith judgment (which judgment is based upon the advice of independent,
outside legal counsel) their fiduciary duties to Seller's shareholders so
require, (ii) making to the stockholders any recommendation and related filing
with the SEC, as required by Rules 14e-2 and 14d-9 under the Exchange Act, with
respect to any tender offer, or (iii) from informing the stockholders of Seller
in the proxy materials with respect to the Shareholder Meeting to consider the
transactions contemplated by this Agreement of information that is material to
the vote with respect to such transactions.

          7.15   Publicity.  Seller, RCBA and Purchaser will consult with each
                 ---------                                                    
other and obtain each other's consent before issuing any press release or
otherwise making any public statements with respect to the transactions
contemplated hereby and shall not issue any such press release or make any such
public statement prior to such consultation and consent, except as may be
required by law or by obligations pursuant to any listing agreement with any
securities exchange.

          7.16   Reservation of Shares.  Seller shall at all times reserve and
                 ---------------------                                        
keep available, out of its authorized and unissued stock, solely for the purpose
of effecting the conversion of Series B Cumulative Convertible Preferred Stock,
such number of shares of its Common Stock free of preemptive rights as shall
from time to time be sufficient to effect the conversion of Series B Cumulative
Convertible Preferred Stock from time to time.

                                      -31-
<PAGE>
 
          7.17   Confidentiality.  Each of RCBA and the Purchaser recognizes and
                 ---------------                                                
acknowledges that it has in the past, currently has, and in the future may
possibly have, access to certain confidential information of Seller.  Each of
RCBA and Purchaser agrees that it will not disclose confidential information
with respect to Seller to any person, firm, corporation, association or other
entity for any purpose or reason whatsoever, except to authorized
representatives of Seller and to counsel and other advisers, provided that such
advisers (other than counsel) agree to the confidentiality provisions of this
Section 7.17, unless (i) such information becomes known to the public generally
through no fault of RCBA or Purchaser, (ii) disclosure is required by law or the
order of any governmental authority under color of law, or (iii) the disclosing
party reasonably believes that such disclosure is required in connection with
the defense of a lawsuit against the disclosing party, provided, that prior to
disclosing any information pursuant to clauses (i), (ii), or (iii) above, RCBA
and/or Purchaser shall, if possible, give prior written notice thereof to Seller
and provide Seller with the opportunity to contest such disclosure.

          7.18   Use of Proceeds.  The net proceeds of the sale of the Shares
                 ---------------                                             
will be used by Seller and its Subsidiaries for general corporate purposes, and
shall not, without the prior written consent of Purchaser (which consent may be
withheld in its sole discretion) be used to pay dividends or pay down or reduce
any debt or securities senior in liquidation preference or dividend to the
Shares ("Action"), provided, however, that no such written consent of Purchaser
                   --------  -------                                           
shall be required where a majority of the Designated Directors (as defined in
the Certificate of Vote of Directors) approves the proposed Action.  Seller
intends that such net proceeds will be used for investment in the continuing
businesses of Seller and the Subsidiaries.

          7.19   Maintenance of Business.  Seller covenants that between the
                 -----------------------                                    
date of this Agreement and Closing, it shall and shall cause each of its
Subsidiaries to:

                 (a) conduct its business (including, but not limited to, making
loans, paying directors, officers and employees, including any salary, bonus, or
other compensation policy, disposing or acquiring assets, and incurring
liabilities) only in the ordinary course, consistent with past practice,

                 (b) use commercially reasonable efforts to preserve its
business organizations intact, to retain the services of its present officers
and employees and to preserve the good will of the suppliers and customers and
others having business relations with it,

                 (c) comply in all material respects with all laws that may be
applicable to its business,

                 (d) not make any noncash distributions or dividends to its
stockholders, and

                 (e) comply with its stated official accounting policies with
respect to charge-offs and loss provisions.

                                      -32-
<PAGE>
 
          Subject to the foregoing, any transaction or action that is not in the
ordinary course of business, consistent with Seller's past practice, shall be
subject to the prior written consent of Purchaser.


                                 ARTICLE VIII
                                  STANDSTILL

          8.1  Generally.  Each of RCBA and Purchaser hereby agrees that during
               ---------                                                       
the Standstill Period (hereinafter defined) it will not, nor will it permit any
of its Affiliates (for purposes of this Agreement, Affiliates of RCBA and
Purchaser shall be deemed to include Ronald Tutor and Tutor-Saliba Corporation)
to, directly or indirectly:

               (a) acquire, offer to acquire, or agree to acquire by purchase,
by joining a partnership, limited partnership, syndicate or "group" any
securities of Seller or securities convertible into or exercisable or
exchangeable for such securities (collectively, "Perini Securities"); provided,
                                                                      --------
however, that nothing contained herein shall prohibit RCBA or Purchaser or the
- -------
Affiliates of any of them from acquiring any Perini Securities (w) acquired
pursuant to this Agreement or upon the exchange of Shares for Conversion Shares
as contemplated and permitted by the Articles of Organization and Certificate of
Vote of Directors, (x) as a result of a stock split, stock dividend or similar
recapitalization by Seller, (y) upon the execution of buy orders by any
Affiliate of RCBA or Purchaser which is a registered broker-dealer for the bona
fide accounts of its brokerage customers unaffiliated and not acting in concert
with Purchaser or RCBA, or (z) pursuant to the exercise of any warrant, option
or other right to acquire Perini Securities ("Rights"), which it receives
directly from Seller pursuant to a distribution to stockholders or from
acquiring such Rights directly from Seller; and provided, further, that if
                                                --------  -------         
during the Standstill Period, as a result of a business combination transaction
between Seller or an Affiliate of Seller and any other entity which is not RCBA,
Purchaser or any Affiliate of either of them (an "Other Entity"), any one or
more of RCBA or Purchaser or any of their Affiliates shall acquire beneficial
ownership (within the meaning of Rule 13d-3 of the Exchange Act) of Perini
Securities in such business combination, such members may continue to own
beneficially such Perini Securities so acquired by such members and such Perini
Securities shall continue to be subject to the provisions of this Section; and

               (b) participate in, or encourage, the formation of any group
(within the meaning of Section 13(d)(3) of the Exchange Act which owns or seeks
to acquire beneficial ownership of, or otherwise acts in respect of, Perini
Securities, with the exception of any group all of whose members are Affiliates
of Purchaser (such group, excluding such Affiliates, a "13D Group").

                                      -33-
<PAGE>
 
          8.2  Voting.  Nothing in this Article VIII shall preclude RCBA or
               ------                                                      
Purchaser from exercising the voting and other rights granted to RCBA or
Purchaser pursuant to this Agreement or the other Transaction Documents.

          8.3  Length.  As used herein, the term "Standstill Period" shall mean
               ------                                                          
the period from the date of this Agreement until the earlier to occur of:

               (a)  Two (2) years after the Closing Date: or

               (b)  Seller's material breach of any of its obligations contained
in the Registration Rights Agreement; or

               (c)  Seller's amendment to its charter or by-laws to alter the
size or powers of the Executive Committee without prior consent from Purchaser;
or

               (d)  Except as to any bankruptcy filing approved by a majority of
the Designated Directors (as defined in the Certificate of Vote of Directors),
Seller or any of its Subsidiaries shall commence a voluntary case concerning
itself under Title 11 of the United States Code entitled "Bankruptcy" as now or
hereafter in effect, or any successor thereto (the "Bankruptcy Code"), which, in
the case of a Subsidiary of Seller, has had or would have a Material Adverse
Effect; or an involuntary case is commenced against Seller or any of its
Subsidiaries and the petition is not controverted within 10 days, or is not
dismissed within 60 days after commencement of the case, which, in the case of a
Subsidiary of Seller, has had or would have a Material Adverse Effect; or a
custodian (as defined in the Bankruptcy Code) is appointed for, or takes charge
of, all or any substantial part of the property of Seller or any of its
Subsidiaries, which, in the case of a Subsidiary of Seller, has had or would
have a Material Adverse Effect; or Seller or any of its Subsidiaries commences
any other proceeding under any reorganization, arrangement, adjustment of debt,
relief of debtors, rehabilitation, dissolution, insolvency or liquidation or
similar law of any jurisdiction, whether now or hereafter in effect, relating to
Seller or such Subsidiary, or there is commenced against Seller or any of its
Subsidiaries any such proceeding which remains undismissed for a period of 60
days, which, in the case of a Subsidiary of Seller, has had or would have a
Material Adverse Effect; or Seller or any of its Subsidiaries is adjudicated
insolvent or bankrupt, which, in the case of a Subsidiary of Seller, has had or
would have a Material Adverse Effect; or any order of relief or other order
approving any such case or proceeding is entered, which, in the case of a
Subsidiary of Seller, has had or would have a Material Adverse Effect; or Seller
or any of the Subsidiaries suffers any appointment of any custodian or the like
for it or any substantial part of its property to continue undischarged or
unstayed for a period of 60 days, which, in the case of a Subsidiary of Seller,
has had or would have a Material Adverse Effect; or Seller or any of its
Subsidiaries makes a general assignment for the benefit of creditors, which, in
the case of a Subsidiary of Seller, has had or would have a Material Adverse
Effect; or Seller shall fail to pay, or shall state that it is unable to pay, or
shall be unable to pay, its debts, generally as they become due, which, in the
case of a Subsidiary of

                                      -34-
<PAGE>
 
Seller, has had or would have a Material Adverse Effect; or Seller or any of its
Subsidiaries shall call a meeting of its creditors with a view to arranging a
composition or adjustment of its debts, which, in the case of a Subsidiary of
Seller, has had or would have a Material Adverse Effect; or Seller or any of its
Subsidiaries shall by any act or failure to act indicate its consent to,
approval of or acquiescence in any of the foregoing, which, in the case of a
Subsidiary of Seller, has had or would have a Material Adverse Effect; or any
corporate action is taken by Seller or any of its Subsidiaries for the purpose
of effecting any of the foregoing, which, in the case of a Subsidiary of Seller,
has had or would have a Material Adverse Effect; or

               (e)  without encouragement by or the participation of RCBA,
Purchaser or any of their Affiliates, the acquisition by any Person or 13D Group
(other than RCBA or Purchaser or Affiliates of either) of, the commencement of a
tender offer by such Person or 13D Group for, or the public announcement of an
intention to acquire, securities of Seller which, if added to the securities (if
any) already owned by such Person or 13D Group, would represent fifteen percent
(15%) or more of the total voting power (including rights to acquire voting
power) of Seller's securities, or the receipt by such Person or 13D Group of
Seller's agreement or consent to make such acquisition; provided that a public
announcement or commencement of a tender offer shall end the Standstill Period
only if such Person or 13D Group shall have received Seller's agreement or
consent to make such intended acquisition, and such a tender offer shall
terminate the Standstill Period only if and when the Board of Directors of
Seller shall have (a) recommended approval of such tender offer, (b) not
recommended, within 10 business days after the commencement of such tender
offer, that shareholders reject such tender offer, or (c) amended the Rights
Agreement to permit acquisition of shares under such tender offer; or

                (f) the date this Agreement is terminated in accordance with
Article IX hereof.


                                  ARTICLE IX
                                  TERMINATION

          Except for the obligations in Article XI and Sections 7.17 and 10.3,
this Agreement and the transactions contemplated hereby shall terminate without
any action by the parties hereto if the Closing shall not have occurred on or
before September 9, 1996, provided, however, that in the event Closing shall not
                          --------  -------                                     
have occurred solely because one or more of the conditions set forth in Sections
3.9, 3.14, 4.6 and 4.7 have not been met,  any party may elect, by written
notice to the others, to extend such termination until October 9, 1996.  This
Agreement may be terminated at any time prior to the Closing (i) by a written
instrument executed and delivered by Seller, RCBA and Purchaser; (ii) by Seller,
if Seller is not satisfied in its reasonable discretion with the progress of the
renegotiations of the credit agreements listed on Exhibit 3.9 by the twentieth
business day after the date of this

                                      -35-
<PAGE>
 
Agreement; (iii) by RCBA or Purchaser pursuant to Section 3.8 or upon any
material breach or default by Seller under this Agreement; or (iv) by Seller
upon any material breach or default by RCBA or Purchaser under this Agreement.


                                   ARTICLE X
                               EVENTS OF DEFAULT

          10.1   By Seller.  A material breach or default by Seller shall occur:
                 ---------                                                      

                 (a) in the event that any Representation or Warranty of Seller
set forth in Article V shall be false in any material respect, or

                 (b) in the event that Seller (or any applicable Subsidiary)
shall not perform in any material respect any covenant required of it in Article
III or Article VII not otherwise waived by RCBA and Purchaser, or
 
                 (c)  breach of or default by Seller or any Subsidiary under any
of the Transaction Documents.

          10.2   By Purchaser.  A material breach or default by RCBA or
                 ------------                                          
Purchaser shall occur

                 (a) in the event that any Representation or Warranty of RCBA or
Purchaser set forth in Article VI shall be false in any material respect, or

                 (b) in the event that RCBA or Purchaser shall not perform in
any material respect any Covenant required of it in Article IV, VII or VIII not
otherwise waived by Seller, or

                 (c) breach of or default by RCBA or Purchaser under any of the
Transaction Documents.

          10.3   Specific Remedies.  In addition to the termination of this
                 -----------------                                         
Agreement and the transactions contemplated herein prior to Closing, in the
event of a material breach or default by a party (the "Breaching Party"), the
following additional remedies shall be available to the non-breaching party (the
"Non-Breaching Party"):

                 (a) the Breaching Party shall indemnify the Non-Breaching Party
for any and all loss, cost, and expense caused by the breach of representation,
warranty, or covenant; or

                                      -36-
<PAGE>
 
                 (b) in the event that Seller or any Subsidiaries consummate an
Acquisition Proposal at any time prior to the date that is 180 days after the
date hereof, Seller will promptly pay to Purchaser one million five hundred
thousand dollars ($1,500,000.00) unless:  (i)  either RCBA or Purchaser have
breached this Agreement and Seller has terminated this Agreement pursuant to
Section 10.2, (ii) the conditions set forth in Sections 4.2, 4.5, 4.7 and 4.8
have not been met, or (iii) either RCBA or Purchaser has terminated this
Agreement pursuant to Section 3.8; or

                 (c) in the event that any of the transactions contemplated in
the Transaction Documents are not consummated for any reason other than (i) the
unwillingness of Purchaser to consummate such transactions, (ii) breach of
representations, warranties or covenants by Purchaser or RCBA followed by
termination of this Agreement under Section 10.2, or (iii) the conditions set
forth in Sections 4.2, 4.5, 4.7 and 4.8 have not been met, Seller shall promptly
pay Purchaser all of its out-of pocket costs and third party expenses (including
professional fees), that RCBA or Purchaser incurred in association with
conducting "due diligence" review of the Seller including for any such due
diligence review undertaken before the execution of this Agreement.

                                  ARTICLE XI
                  SURVIVAL OF REPRESENTATIONS AND WARRANTIES

          All representations and warranties contained in this Agreement shall
survive the execution and delivery of this Agreement and the delivery of the
Shares for a period of three years from the date of such delivery and any
examination or investigation made by any party to this Agreement or any of their
successors and assigns.


                                  ARTICLE XII
                              PERFORMANCE; WAIVER

          The provisions of this Agreement (including this Article XII) may be
modified or amended, and waivers and consents to the performance and observance
of the terms hereof may be given by written instrument executed and delivered by
Seller and (1) prior to the Closing, by RCBA and Purchaser and (2) after the
Closing, by the holder or holders of a majority of the Series B Cumulative
Convertible Preferred Stock.  The failure at any time to require performance of
any provision hereof shall in no way affect the full right to require such
performance at any time thereafter (unless performance thereof has been waived
in accordance with the terms hereof for all purposes and at all times by the
parties to whom the benefit of such performance is to be rendered).  The waiver
by any party to this Agreement of a breach of any provision hereof shall not be
taken or held to be a waiver of any succeeding breach of such provision or any
other provision or as a waiver of the provision itself.

                                      -37-
<PAGE>
 
                                 ARTICLE XIII
                            SUCCESSORS AND ASSIGNS

          All covenants and agreements contained in this Agreement by or on
behalf of the parties hereto shall bind, and inure to the benefit of, the
respective successors and assigns of the parties hereto; provided, however, that
the rights granted to the parties hereto may not be assigned (except to wholly-
owned subsidiaries of such parties) without the prior written consent of the
other parties.  RCBA or Purchaser may assign to one or more of its affiliated
partnerships its obligations hereunder in whole or in part, but shall not be
relieved of such obligations.



                                  ARTICLE XIV
                                 MISCELLANEOUS

          14.1 Notices.  All notices or other communications given or made
               -------                                                    
hereunder shall be validly given or made if in writing and delivered by
facsimile transmission or in Person at, or mailed by overnight courier to, the
following addresses (and shall be deemed effective at the time of receipt
thereof).

          If to Seller:
                         Perini Corporation
                         73 Mt. Wayte Avenue
                         Framingham, Massachusetts  01701
                         Attn:  David B. Perini
                         Facsimile:  508-628-2960
 
                         with a copy to:

                         Goodwin, Procter & Hoar LLP
                         Exchange Place
                         Boston, MA  01209
                         Attn:  Richard A. Soden, Esq.
                         Facsimile: 617-523-1231

          If to Purchaser or RCBA:

                         Richard C. Blum & Associates, L.P.
                         909 Montgomery Street, Suite 400
                         San Francisco, California  94133
                         Attn: Alexander Dean
                         Facsimile: 415-434-3130

                                      -38-
<PAGE>
 
                         with a copy to:

                         Wilmer, Cutler & Pickering
                         2445 M Street, N.W.
                         Washington, D.C.  20037
                         Attn:  Michael R. Klein and Eric R. Markus
                         Facsimile: 202-663-6363

or to such other address as the party to whom notice is to be given may have
previously furnished notice in writing to the other in the manner set forth
above.

          14.2 Expenses.   Except as set forth in Section 10.3, each party shall
               --------                                                         
bear its own expenses.

          14.3 Governing Law.  This Agreement shall be governed by and construed
               -------------                                                    
in accordance with the laws of the State of Delaware as applied to contracts
made and performed within the State of Delaware, without regard to principles of
conflicts of law.  Each of the parties hereto agrees to submit to the sole and
exclusive jurisdiction of the State and Federal courts in the State of Delaware
in any action or proceeding arising out of or relating to this Agreement.

          14.4   Severability; Interpretation.  If any term, provision, covenant
                 ----------------------------                                   
or restriction of this Agreement is held by a court of competent jurisdiction to
be invalid, void or unenforceable, each of Seller, RCBA and Purchaser directs
that such court interpret and apply the remainder of this Agreement in the
manner which it determines most closely effectuates their intent in entering
into this Agreement, and in doing so particularly take into account the relative
importance of the term, provision, covenant or restriction being held invalid,
void or unenforceable.

          14.5   Headings.  The index and section headings herein are for
                 --------                                                
convenience only and shall not affect the construction hereof.

          14.6   Entire Agreement.  This Agreement together with the other
                 ----------------                                         
Transaction Documents and the Employment Contracts embody the entire agreement
between the parties relating to the subject matter hereof and any and all prior
oral or written agreements, representations or warranties, contracts,
understandings, correspondence, conversations, and memoranda, whether written or
oral, among Seller, RCBA and Purchaser, or between or among any agents,
representatives, parents, subsidiaries, affiliates, predecessors in interest or
successors in interest, with respect to the subject matter hereof.

          14.7   Counterparts.  This Agreement may be executed in counterparts,
                 ------------                                                  
each of which shall be deemed to be an original and all of which together shall
be deemed to be one and the same instrument.

                                      -39-
<PAGE>
 
          14.8  Absence of Third Party Beneficiary Rights.  No provision of this
                -----------------------------------------                       
Agreement is intended, nor will be interpreted, to provide or to create any
third party beneficiary rights or any other rights of any kind in any client,
customer, affiliate, shareholder, employee, or partner of any party hereto or
any other person or entity.

          14.9 Mutual Drafting.  This Agreement is the mutual product of the
               ---------------                                              
parties hereto, and each provision hereof has been subject to the mutual
consultation, negotiation and agreement of each of the parties, and shall not be
construed for or against any party hereto.

          14.10  Further Representations.  Each party to this Agreement
                 -----------------------                               
acknowledges and represents that it has been represented by its own legal
counsel in connection with the transactions contemplated by this Agreement, with
the opportunity to seek advice as to its legal rights from such counsel.  Each
party further represents that it is being independently advised as to the tax
consequences of the transactions contemplated by this Agreement and is not
relying on any representation or statements made by the other party as to such
tax consequences.

          14.11  Specific Performance; Remedies.
                 ------------------------------ 

                 (a) Seller acknowledges that Purchaser will be irreparably
harmed and that there will be no adequate remedy at law for any violation by
Seller of the covenants or agreements contained in Sections 7.2 (a) and (c),
7.3, 7.6, 7.9, 7.12, 7.15 and 7.16 of this Agreement. It is accordingly agreed
that, in addition to any other remedies which may be available upon the breach
of any such covenants or agreements, Purchaser shall have the right to obtain
injunctive relief to restrain a breach or threatened breach of, or otherwise to
obtain specific performance of, these covenants and agreements of the Seller.

                 (b) Purchaser acknowledges that Seller will be irreparably
harmed and that there will be no adequate remedy at law for any violation by
Purchaser of the covenants or agreements contained in Sections 7.15 and 7.17 and
Article 8 of this Agreement. It is accordingly agreed that, in addition to any
other remedies which may be available upon the breach of any such covenants or
agreements, Seller shall have the right to obtain injunctive relief to restrain
a breach or threatened breach of, or otherwise to obtain specific performance
of, these covenants and agreements of Purchaser.


          14.12  Right of First Refusal; Transfer of Securities.
                 ---------------------------------------------- 

                 (a) For two (2) years from the Closing Date, Purchaser
covenants not to transfer the Shares and the Conversion Shares to any Person who
engages in the construction business as a general contractor, construction
manager or engineer constructor competitive with the business of Seller (such
share transfer, a "Competitor Transfer").

                                      -40-
<PAGE>
 
                 (b) After two (2) years from the Closing Date, Purchaser grants
to Seller the right of first refusal, each time that Purchaser plans to effect a
Competitor Transfer. In each such event, Purchaser shall notify Seller of such
proposed Competitor Transfer and provide Seller with the number of Shares and/or
Conversion Shares to be transferred and the price and terms (including tax
treatment) of the proposed Share and/or Conversion Share transfer. Seller shall
have the right in its sole discretion, for a period of fifteen (15) days after
receipt of the notice from Purchaser, to elect by written notice to Purchaser to
purchase all Shares and/or Conversion Shares subject to the proposed Competitor
Transfer on the same terms and conditions offered by such Competitor ("Purchase
Notice"). Seller shall have thirty (30) days from the date such Purchaser Notice
is delivered to Purchaser to effect the purchase. In the event that Seller does
not send the Purchase Notice within the fifteen (15) day period or does not
purchase the Shares and/or Conversion Shares within thirty (30) days after the
Purchase Notice is delivered, Purchaser's right of first refusal to the proposed
Competitor Transfer shall terminate.

                 (c) The Seller's decision as to whether to send a Purchase
Notice and/or effect the purchase of the Shares and/or Conversion Shares
encompassed by the Purchase Notice shall not require action of the Executive
Committee nor shall the Designated Directors (as defined in the Certificate of
Vote of Directors) vote on this matter.

                 (d) The rights of first refusal set forth in this Section shall
terminate at the earlier of the fourth anniversary of the Closing Date or at
such time as Purchaser holds less than 50% of the Shares acquired on the Closing
Date (including any Conversion Shares into which any such Shares have been
converted).

                 (e) For two (2) years from the Closing Date, Purchaser
covenants not to sell or otherwise transfer, or permit anyone else to sell or
otherwise transfer, any interest in Purchaser to any Person who engages in the
construction business as a general contractor, construction manager or engineer
constructor competitive with the business of Seller.

                 [REMAINDER OF PAGE LEFT INTENTIONALLY BLANK]

                                      -41-
<PAGE>
 
       IN WITNESS WHEREOF, the parties hereto have executed this Agreement.


 
PB CAPITAL PARTNERS, L.P.                     PERINI CORPORATION                
                                                                                
                                                                                
                                                                                
By:_________________________                  By: ______________________________
 Name:                                          Name:                           
 Title:                                         Title:



RICHARD C. BLUM & ASSOCIATES, L.P.



By:_________________________
 Name:
 Title:

                                      -42-
<PAGE>
 
                  SECOND AMENDMENT TO STOCK PURCHASE AGREEMENT
                  --------------------------------------------


     This SECOND AMENDMENT (the "Amendment") to the Stock Purchase Agreement is
made this 8th day of November, 1996, by and among RICHARD C. BLUM & ASSOCIATES,
L.P., a California limited partnership ("RCBA"), PB CAPITAL PARTNERS, L.P., a
Delaware limited partnership ("Purchaser"), and PERINI CORPORATION, a
Massachusetts corporation ("Seller"). Capitalized terms not defined herein shall
have the meaning given them in the Stock Purchase and Sale Agreement (the
"Agreement"), dated July 24, 1996, by and among RCBA, Purchaser, and Seller.

     WHEREAS, RCBA, Purchaser, and Seller are parties to the Agreement; and

     WHEREAS, by letter agreements dated August 21, 1996, September 16, 1996,
September 30, 1996, and October 9, 1996, RCBA, Purchaser and Seller agreed to
change certain deadlines in the Agreement (collectively, the "First Amendment");
and

     WHEREAS, RCBA, Purchaser, and Seller now wish to amend certain terms
thereof; and

     WHEREAS, except as amended hereby, the RCBA, Purchaser, and Seller desire
the Agreement, as amended, to continue in full force and effect.

     NOW, THEREFORE, in consideration of the premises and of the respective
representations, warranties, covenants, agreements and conditions contained
herein and in the Agreement, each of the parties agrees as follows:

     1.   Section 1.6 is amended and restated in its entirety as follows:

               1.6  "Bylaw Amendments" means the amendments to the Bylaws of the
          Seller, to be approved by the Board of Directors and the shareholders
          of Seller on or prior to the Closing Date, a true and correct copy of
          which is attached as Exhibit 1.6 hereto.

     2.   Section 1.28 is amended and restated in its entirety as follows:

               1.28  "Proxy Statement" means the proxy statement, complying with
          the requirements of the Securities Exchange Act of 1934 (the "Exchange
          Act"), sent to the shareholders of Seller in connection with the
          Shareholder Meeting of Seller with respect to, among other matters,
          the Shareholder Meeting Matters.
<PAGE>
 
     3.   Section 2.1 is amended by replacing "September 9, 1996" with "January
          31, 1997".

     4.   Section 3.5 is amended and restated in its entirety as follows:

               3.5  Rights Agreement.  The Rights Agreement shall be in full
                    ----------------                                        
          force and effect and not have been amended, modified or supplemented
          on or after the date of this Agreement other than as provided in the
          following sentence.  The Board of Directors of the Seller shall have
          (a) amended or waived provisions of the Rights Agreement such that
          neither the execution nor the delivery of this Agreement and the other
          Transaction Documents nor the fulfillment of the terms of this
          Agreement by the Seller nor the issuance of shares of Conversion Stock
          as herein contemplated will cause there to be a Stock Acquisition Date
          or a Distribution Date (as those terms are defined in the Rights
          Agreement), (b) amended the provisions of the Rights Agreement to
          provide that Purchaser shall not be deemed to be an Adverse Person (as
          that term is defined in the Rights Agreement), and (c) amended the
          provisions of the Rights Agreement (i) to lower, for at least thirty-
          eight months following the Closing, the threshold for definition of an
          Acquiring Person from beneficial ownership of 20% of the then issued
          and outstanding Common Stock to beneficial ownership 10% of the then
          issued and outstanding Common Stock, and (ii) to change the Initial
          Expiration Date to a date that is at least thirty-eight months
          following the Closing.

     5.   Section 3.7 is amended by striking the words "upon ratification within
one year hereof of the sale of Shares described in this Agreement by
shareholders of Seller (including holders of the Shares)".

     6.   Article III is amended by adding the following after Section 3.14:

               3.15 Shareholder Meeting Matters. Seller shall have held the
                    ---------------------------                            
          Shareholder Meeting and the shareholders of Seller shall have approved
          the Shareholder Meeting Matters by the requisite votes required by
          applicable law.

               3.16 Ronald Tutor. Ronald Tutor shall not be prevented from
                    ------------                                          
          serving on the Board of Directors of Seller or from acting chief
          operating officer of Seller by (a) any action of a state or federal
          governmental authority, or (b) his death or disability.  No state or
          federal governmental authority shall have threatened to file a lawsuit
          or institute administrative action (x) to prevent Ronald Tutor from so
          serving, (y) to limit his role as 

                                      -2-
<PAGE>
 
          officer or director of Seller, or (z) to seek civil or criminal
          damages or penalties against any of the parties hereto or Tutor should
          he serve as an officer or director of Seller, and, in the reasonable
          judgment of RCBA, there shall not be a material risk of such a suit or
          action. Seller shall have entered into a management agreement with
          Tutor-Saliba Corporation in substantially the form of Exhibit 3.16
          hereto, with such changes as shall be required by any state or federal
          governmental authority (which changes are reasonably acceptable to
          Seller, Tutor-Saliba Corporation, and RCBA), and such agreement shall
          be in full force and effect.

               3.17  Conflict of Interest. RCBA has previously advised Seller of
                     --------------------                                       
          its insistence that RCBA, PB, and Seller avoid any and all possible
          conflict of interest issue arising out of PB's proposed investment in
          Seller and the relationship of a principal of RCBA to a United States
          Senator. Therefore, it is a condition to Closing (a) that the Senate
          Ethics Committee and regular counsel for the Senator on such matters
          shall each have given an opinion concerning RCBA's involvement with
          Seller that, in the reason able judgment of RCBA, does not require the
          imposition of material restrictions on the business of Seller or upon
          the ability of the Senator to vote on matters of concern to her
          constituents, and (b) that RCBA be assured by the Executive Committee
          of Seller's Board of Directors that it will cause Seller not to bid
          for a project when and if advised of RCBA's view that such bid could
          create a significant risk of exposing Seller, RCBA, PB, and/or the
          Senator to a conflict of interest problem .

     7.   Article IV is amended by adding the following after Section 4.9:

               4.10  Shareholder Meeting Matters. Seller shall have held the
                     ---------------------------                            
          Shareholder Meeting and the shareholders of Seller shall have approved
          the Shareholder Meeting Matters by the requisite votes required by
          applicable law.

     8.   Section 5.22 is amended and restated in its entirety as follows:

               5.22  No Material Adverse Change. Since the latest date as of
                     --------------------------
          which information with respect to the following items is given in the
          SEC Documents filed prior to July 24, 1996 and except as contained in
          the Transaction Documents and the transactions contemplated therein,
          there has not been:

                    (a) any change that by itself or together with other changes
          has a Material Adverse Effect; or

                                      -3-
<PAGE>
 
                       (b) any damage, destruction or loss (whether or not
           covered by insurance) materially adversely affecting the properties
           or business of Seller; or

                       (c) except (i) as provided for in this Agreement or in
           the other Transaction Documents, or (ii) for the warrants to be
           issued to the banks listed on Exhibit 3.9 on the Closing Date, any
           change in the authorized capital of Seller or in its outstanding
           securities or any change in its ownership interests or any grant of
           any options, warrants, calls, conversion rights or commitments; or

                       (d) any declaration or payment of any dividend or
           distribution in respect of the capital stock or any direct or
           indirect redemption, purchase or other acquisition of any of the
           capital stock of Seller (other than in accordance with the credit
           agreements described in Exhibit 3.9 and consented to by RCBA); or

                       (e) any material increase in the compensation, bonus,
           sales commissions or fee arrangements payable or to become payable by
           Seller to any of its officers directors, stockholders, employees,
           consultants or agents, except for ordinary and customary bonuses and
           salary increased for employees in accordance with past practice; or

                       (f) any work interruptions, labor grievances or claims
           filed, or any similar event or condition of any character, materially
           adversely affecting the business or future prospects of Seller; or

                       (g) any sale or transfer, or any agreement to sell or
           transfer, any material assets property or rights of Seller to any
           person (other than any disposition by Seller of assets on terms
           substantially similar to those already disclosed to RCBA or otherwise
           consented to by RCBA); or

                       (h) any cancellation, or agreement to cancel, any
           material indebtedness or other material obligation owing to Seller,
           provided that Seller may negotiate and adjust bills in the course of
           good faith disputes with customers in a manner consistent with past
           practice; or

                       (i) any plan, agreement or arrangement granting any
           preferential rights to purchase or acquire any interest in any of the
           material assets, property or rights of Seller or requiring consent of
           any party to the transfer and assignment of any such assets, property
           or rights; or

                                      -4-
<PAGE>
 
                       (j) any purchase or acquisition of, or agreement, plan or
           arrangement to purchase or acquire, any material property, rights or
           assets outside of the ordinary course of business of Seller; or

                       (k) any waiver of any material rights or claims of
           Seller; or

                       (l) any material breach, amendment or termination of any
           material contract, agreement, license, permit or other right to which
           Seller is a party; or

                       (m) any material transaction by Seller outside the
           ordinary course of business; or

                       (n) any capital expenditures or commitment by Seller,
           either individually or in the aggregate, exceeding $5,000,000.00; or

                       (o) any change in accounting methods or practices
           (including any change in depreciation or amortization policies or
           rates) by Seller or the revaluation by Seller of any of its assets
           (other than a change in the valuation of the assets described in the
           parenthetical clause to Section 5.22(g) in connection with any such
           disposition); or

                       (p) any creation or assumption by Seller of any mortgage,
           pledge, security interest or lien or other encumbrance on any asset
           other than:

                           (i)   liens arising under existing lease financing
           arrangements which are not material,

                           (ii)  liens for taxes, assessments or other
           governmental charges not yet due or which are being contested in good
           faith and by appropriate proceedings if adequate reserves with
           respect thereto are maintained on the books of Seller in accordance
           with GAAP;

                           (iii) liens granted to the banks listed on Exhibit
           3.9; or

                           (iv)  carriers', warehousemen's, mechancs',
           materialmen's, repairmen's or other like liens arising by operation
           of law in the ordinary course of business of Seller so long as (A)
           the underlying obligations are not overdue for a period of more than
           60 days or (B) such liens as are being contested in good faith and by
           appropriate proceedings 

                                      -5-
<PAGE>
 
           and adquate reserves with respect thereto are maintained on the books
           of Seller in accordance with GAAP;

                    (q) any entry into, amendment of, relinquishment,
           termination or non-renewal by Seller of any contract, lease
           transaction, commitment or other right or obligation that would have
           a Material Adverse Effect; or

                    (r) any loan by Seller to any person or entity, incurring by
           Seller, of any indebtedness, guaranteeing by Seller of any
           indebtedness, issuance or sale of any debt securities of Seller or
           guaranteeing of any debt securities of others (other than loans to
           Seller from construction joint ventures in which Seller owns an
           interest not to exceed, in the aggregate, $35,000,000); or

                    (s) the commencement or notice or threat of commencement of
           any material lawsuit or proceeding against or investigation of Seller
           or any of its affairs; or

                    (t) negotiation or agreement by Seller or any officer or
           employee thereof to do any of the things described in the preceding
           clauses (a) through (s) (other than negotiations with RCBA and its
           representatives regarding the transactions contemplated by this
           Agreement).

     9.    Article V is amended by adding the following after Section 5.25:

               5.26 Proxy Statement.  The Proxy Statement, sent to
                    ---------------                               
           shareholders of Seller after the date hereof but before Closing, will
           not have included any untrue statement of a material fact, or omitted
           to state any material fact, necessary to make the statements therein,
           in the light of the circumstances under which they were made, not
           misleading; provided, however, that this representation shall not
           encompass any information in the Proxy Statement that was furnished
           in writing to the Seller by or on behalf of Purchaser or RCBA for use
           specifically in connection with the preparation of the Proxy
           Statement.

               5.27 Liquidated Damages Clauses.  Except as set forth on Schedule
                    --------------------------                         
           5.27, Seller does not currently have any construction contract that
           does not have a liquidated damages provision establishing Seller's
           maximum potential liability in the event of a breach.

                                      -6-
<PAGE>
 
               5.28 Ownership.  To the knowledge of Seller: (a) at no time
                    ---------                                             
          during the preceding thirty-six months was there any person or group
          that had beneficial ownership of more than five percent (5%) of the
          $21.25 Preferred Stock, (b) the only persons or groups that have
          beneficial ownership of more than five percent (5%) of the Common
          Stock are listed on Schedule 5.28, (c) Schedule 5.28 shows the
          ownership of Common Stock of the persons or groups referred to in
          clause (b) of this Section as of the dates shown on Schedule 5.28, (d)
          the persons or groups referred to in clause (b) of this section do not
          own, directly or indirectly, any shares of the $21.25 Preferred Stock
          except as otherwise shown on Schedule 5.28, and (e) at no time during
          the preceding thirty-six months did any of the persons or groups
          listed on Schedule 5.28 own fewer shares of Common Stock than the
          lowest amount shown with respect to such person or group on Schedule
          5.28.

     10.  Section 7.2(d) is amended by adding the following at the end thereof:
"the shareholders of Seller shall have approved of such Bylaw Amendments, and".

     11.  Section 7.5(a) and (b) are each amended by inserting the phrase " AS
AMENDED," after the words "JULY 24, 1996".

     12.  Section 7.9 is amended and restated in its entirety as follows:

               7.9  Shareholder Meeting.  As promptly as reasonably possible
                    -------------------                                     
          after the date hereof, Seller shall call and hold a special meeting of
          the shareholders of Seller ("Shareholder Meeting"), to obtain
          shareholder approval for the issuance of the Class B Shares (in a
          manner that complies with the requirements of American Stock Exchange
          Rule 713), and the Bylaw Amendments (such items the "Shareholder
          Meeting Matters").  Seller shall recommend, and shall use commercially
          reasonable efforts (including the prepara  tion and circulation of the
          Proxy Statement) to obtain approval for the Shareholder Meeting
          Matters.

     13.  Section 7.10 is amended and restated in its entirety as follows:

               7.10 Proxy Statement. The Proxy Statement shall not be filed, and
                    ---------------                                         
          no amendment or supplement to the Proxy Statement shall be made,
          without consultation with RCBA and Purchaser. Seller shall notify RCBA
          and Purchaser promptly of the receipt by it of any comments from the
          SEC or its staff and of any request by the SEC for amendments or
          supplements to the Proxy Statement and shall supply RCBA and Purchaser
          with copies of all

                                      -7-
<PAGE>
 
          correspondence between it and its representatives, on the one hand,
          and the SEC or the members of its staff, on the other hand, with
          respect to the Proxy Statement.

     14.  Section 7.12 is amended by striking the phrase: "Subsequent to
approval by the shareholders of the Seller of the Shareholder Meeting Matters at
the Shareholders Meeting," .

     15.  Article VII is amended by adding the following after Section 7.19:

               7.20   Appointment of Designated Directors.  Seller covenants and
                      -----------------------------------                       
          agrees that the holders of a majority of the Conversion Shares (as
          that term is defined in the Certificate of Vote) shall have the right,
          by sending written notice to Seller's board of directors, to nominate
          for election, designate, or remove Designated Directors and members of
          the Executive Committee (as and to the extent provided in Section 13
          of the Certificate of Vote to the holders of a majority of the Series
          B Cumulative Convertible Preferred Stock), if all of the following
          conditions are satisfied:

                    (a) there are no shares of Series B Cumulative Convertible
          Preferred Stock issued and outstanding;

                    (b) notwithstanding the absence of oustanding shares of
          Series B Cumulative Convertible Preferred Stock, pursuant to the
          Certificate of Vote the number of Designated Directors pursuant to the
          Certificate of Vote is equal to or greater than one (1);

                    (c) the holders of the Conversion Shares providing such
          notice certify the number of Conversion Shares that are outstanding,
          the number of shares that each of them owns, and that, in aggregate,
          they own a majority of the Conversion Shares outstanding (or the
          Company reasonably determines that they own such a majority); and

                    (d) in the case of the nomination or election of a director,
          the notice contains the information with respect to the nominee which
          would be required by the then applicable rules of the Securities and
          Exchange Commission or the requirements of the national stock exchange
          on which the Company's Common Stock is then listed to be included in
          the Company's proxy statement for a meeting of stockholders at which
          such nominee were to be elected and the Board does not reasonably
          object to such nominee.

                                      -8-
<PAGE>
 
          Upon receipt of a notice referred to in the preceding sentence, the
          Board of directors of Seller shall, unless prohibited by applicable
          law, cause such nominations, designations, and removals of Designated
          Directors and members of the Executive Committee to be made effective.

     16.  Article IX is amended by replacing "September 9, 1996" with "January
31, 1997 " and by replacing "October 9, 1996" with "February 28, 1997".

     17.  Section 10.3(b)(ii) is amended by replacing the phrase "and 4.8" with
the phrase ", 4.8, or 4.10".

     18.  Section 10.3(c)(iii) is amended by replacing the phrase "and 4.8" with
the phrase ", 4.8, or 4.10".

     19.  Article XI is amended and restated in its entirety as follows:

               All representations and warranties contained in this Agreement
          shall survive the execution of this Agreement and the delivery of the
          Shares for a period of three years from the date of such delivery.

     20.  Article XIII is amended by adding at the end thereof the following:

          In addition, Purchaser shall have the right, prior to Closing, to
          assign its rights and obligations hereunder to purchase a specified
          number of shares (but not to exceed 65,000 shares) at the price
          provided by this Agreement to financially responsible third parties
          (other than persons to whom transfer would, following Closing, be
          prohibited pursuant to Section 14.12 or be prohibited by applicable
          law).  Such person or persons (each, a "Permitted Assignee") and
          Purchaser shall execute an assumption and assignment agreement (the
          "Assignment Agreement") reasonably acceptable to Seller whereby the
          Permitted Assignee agrees to be bound by the terms and conditions of
          the Agreement and makes the representa  tions and warranties called
          for by Article VI (subject only to such changes as are necessary to
          address the legal nature of such person).  Once such assignment is
          duly executed, (a) the term "Purchaser" as used in this Agreement and
          the Transaction Documents shall mean PB Capital, L.P. and such
          Permitted Assignee, and (b) PB Capital, L.P. shall be released from
          its obligations under this Agreement insofar as they relate to its
          obligation to purchase the number of shares that such Permitted
          Assignee agreed to purchase under the Assignment Agreement.

     21.  Section 14.2 is amended and restated as follows:

                                      -9-
<PAGE>
 
               14.2  Expenses. Except as set forth in Section 10.3, Amendment
                     --------                                                
          No. 7 to Bridge Credit Agreement and Amendment No. 3 to Credit
          Agreement, that certain letter agreement dated as of November 7, 1996
          between Seller and Purchaser, or the following sentence, each party
          shall bear its own expenses.  Seller acknowledges that RCBA has
          incurred significant expenses in the interest of expediting and
          completing the transaction, and has also incurred due diligence
          expenses that will benefit Seller on an ongoing basis; therefore,
          immediately following Closing, Seller will reimburse RCBA for its out
          of pocket expenses (including professional fees), but such
          reimbursement shall not exceed $150,000 unless RCBA and Seller
          otherwise agree.

     22.  Exhibit 1.7 is amended by replacing it in its entirety with Exhibit
1.7 hereto.

     23.  Exhibit 1.32 is amended by replacing it in its entirety with Exhibit
1.32 hereto.

     24.  Exhibit 3.12 is amended by replacing it in its entirety with Exhibit
3.12 hereto.


                                     -10-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment.

PB CAPITAL PARTNERS, L.P.                       PERINI CORPORATION

By:  Richard C. Blum & Associates, L.P., 
     its General Partner
                                                By: ______________________
     By:  Richard C. Blum & Associates,             Name:
          Inc., its General Partner                 Title:


          By:  __________________
               Name:
               Title:


RICHARD C. BLUM & ASSOCIATES, L.P.

By:  Richard C. Blum & Associates, Inc., 
     its General Partner


     By:  ________________________
          Name:
          Title:


                                     -11-
<PAGE>
 
1.   Revised Exhibit 1.7

2.   Revised Exhibit 1.32

3.   Revised Exhibit 3.12

4.   Exhibit 3.16
<PAGE>
 
                       CERTIFICATE OF VOTE OF DIRECTORS
                                 ESTABLISHING
                SERIES B CUMULATIVE CONVERTIBLE PREFERRED STOCK
                             OF PERINI CORPORATION
                 (PURSUANT TO CHAPTER 156B, SECTION 26 OF THE
              GENERAL LAWS OF THE COMMONWEALTH OF MASSACHUSETTS)

                           ------------------------

     Perini Corporation, a corporation organized and existing under the laws of
the State of Massachusetts (hereinafter called the "Corporation"), and having
its principal office in this State at 73 Mt. Wayte Avenue, Framingham,
Massachusetts 01701, hereby certifies to the State Department of Massachusetts
that:

     FIRST: Pursuant to the authority granted to and vested in the Board of
Directors of the Corporation (hereinafter called the "Board of Directors" or the
"Board") in accordance with the provisions of Article ________ of the Restated
Articles of Organization of the Corporation (the "Articles"), the Board of
Directors, at a meeting duly convened and held on ____ __, 1996, regarding the
sale and issuance by the Corporation of cumulative convertible preferred stock,
adopted resolutions (the "Resolutions") classifying 500,000 shares of Preferred
Stock of the Corporation into a single series to be designated as "Series B
Cumulative Convertible Preferred Stock" and setting the preferences, conversion
and other rights, voting powers, restrictions, limitations as to dividends,
qualifications, and terms and conditions of redemption of such shares as
follows:

                SERIES B CUMULATIVE CONVERTIBLE PREFERRED STOCK

     1.   Designation and Amount.  There shall be a series of Preferred Stock
          ----------------------                                             
designated as "Series B Cumulative Convertible Preferred Stock" and the number
of shares constituting such series shall be 500,000, of which 150,150 shall be
issued initially (the date of such issuance, the "Original Issue Date") and the
remainder shall be reserved for issuance as dividends pursuant to Section 3
below. The number of shares designated as shares of Series B Cumulative
Convertible Preferred Stock may be decreased (but not increased) by the Board of
Directors without a vote of stockholders; provided, however, that such number
                                          --------  -------                  
may not be decreased without the approval of the holders of 66-2/3% of the then
outstanding shares of Series B Cumulative Convertible Preferred Stock.

     2.   Preemptive Rights.  Holders of shares of Series B Cumulative
          -----------------                                           
Convertible Preferred Stock are not entitled to any preemptive or subscription
rights in respect of any securities of the Corporation.
<PAGE>
 
     3.   Dividends.
          --------- 

          (a)  The holders of shares of Series B Cumulative Convertible
Preferred Stock shall be entitled to receive, when and as authorized and
declared by the Board of Directors out of funds at the time legally available
therefor, dividends at the Cash Dividend Rate (defined below) per annum times
the Liquidation Preference (defined below in Section 4(a)) if paid in cash, or
at the In-Kind Dividend Rate (defined below) per annum times the Liquidation
Preference if paid in additional shares of Series B Cumulative Convertible
Preferred Stock, and no more, which shall be fully cumulative, shall accrue with
respect to any such share from the original date of issuance of such share
without interest and shall be payable quarterly in arrears on March 15, June 15,
September 15 and December 15 of each year (a "Dividend Payment Date"),
commencing March 15, 1997 (except that if any such date is a Saturday, Sunday or
legal holiday, then such dividend shall be payable on the next day that is not a
Saturday, Sunday or legal holiday) to holders of record as they appear upon the
stock transfer books of the Corporation on each March 1, June 1, September 1 and
December 1 immediately preceding the payment dates, or such other dates as shall
be fixed at the time of the authorization and declaration by the Board of
Directors (or, to the extent permitted by applicable law, a duly authorized
committee thereof), which date shall not be less than ten (10) nor more than
sixty (60) days preceding the relevant dividend payment date. For purposes
hereof, the term "legal holiday" shall mean any day on which banking
institutions are authorized to close in New York, New York. The amount of
dividends payable per share of Series B Cumulative Convertible Preferred Stock
for each quarterly dividend period shall be computed by dividing the annual
dividend amount by four and shall include fractional shares. The amount of
dividends payable for the initial dividend period and any period shorter than a
full quarterly period during which shares are outstanding shall be computed on
the basis of a 360-day year of twelve 30-day months and the actual number of
days elapsed in the period in which payable. No interest shall be payable in
respect of any dividend payment on the Series B Cumulative Convertible Preferred
Stock or any other Parity Dividend Stock (as hereinafter defined) which may be
in arrears. The "Cash Dividend Rate" shall be 9 percent per annum if a Special
Default (defined below) has occurred and is continuing at any time during the
applicable Annual Payment Period (defined below) or Semiannual Payment Period
(defined below), and shall be 7 percent per annum at all other times. The "In-
Kind Dividend Rate" shall be 12 percent per annum if a Special Default has
occurred and is continuing at any time during the applicable Annual Payment
Period or Semiannual Payment Period, and shall be 10 percent per annum at all
other times.

                                      -2-
<PAGE>
 
          (b)  Any dividend payments may be made, in the sole discretion of the
Board of Directors, as follows (for purposes of this determination, the
Designated Directors (defined below in Section 13) shall not vote):

               (i)  Prior to December 15, 1999:

                    (1)  on or prior to the Original Issue Date and prior to
December 15, 1997 and 1998, the Board of Directors shall determine whether
dividend payments payable on the next four Dividend Payment Dates beginning
December 15 (each, an "Annual Payment Period") shall be paid in (i) cash or (ii)
additional shares of Series B Cumulative Convertible Preferred Stock valued at
the Liquidation Preference (but not in any combination of cash and additional
shares of Series B Cumulative Convertible Preferred Stock); provided, however,
                                                            --------  -------
that the first Annual Payment Period shall commence March 15, 1997, and run for
three Dividend Payment Dates if the Original Issue Date is between December 15,
1996 and March 15, 1997;

                    (2)  in the event that, during an Annual Payment Period when
the Board has elected to pay dividends on the Series B Cumulative Convertible
Preferred Stock in cash, the Corporation fails to authorize, declare and pay in
cash on a Dividend Payment Date the full amount of the cash dividend due at the
Cash Dividend Rate, then, on or prior to such Dividend Payment Date, the Board
shall authorize, declare and pay a supplemental stock dividend in shares of
Series B Cumulative Convertible Preferred Stock (valued at the Liquidation
Preference) equal to the difference between the dividend that would have been
paid in-kind at the In-Kind Dividend Rate (assuming that the Board had elected
to pay dividends for such period in-kind and assuming that a Special Default
existed) and the cash dividend actually declared and paid on such Dividend
Payment Date and on the previous Dividend Payment Date during such Annual
Payment Period, if any.

               (ii) On or after December 15, 1999:

                    (1)  On or prior to December 15, 1999 and on or prior to
each June 15 and December 15 thereafter, the Board of Directors shall determine
whether dividend payments accruing on the next two Dividend Payment Dates
beginning on such Dividend Payment Date (each a "Semiannual Payment Period")
shall be paid in (i) cash or (ii) additional shares of Series B Cumulative
Convertible Preferred Stock valued at the Liquidation Preference (but 

                                      -3-
<PAGE>
 
not in any combination of cash and additional shares of Series B Cumulative
Convertible Preferred Stock);

                      (2)  in the event that, during a Semiannual Payment Period
when the Board has elected to pay dividends on the Series B Cumulative
Convertible Preferred Stock in cash, the Corporation fails to authorize, declare
and pay in cash on a Dividend Payment Date the full amount of the cash dividend
due at the Cash Dividend Rate, then, on such Dividend Payment Date, the Board
shall authorize, declare and pay a supplemental stock dividend in shares of
Series B Cumulative Convertible Preferred Stock (valued at the Liquidation
Preference) equal to the difference between the dividend that would have been
paid in-kind at the In-Kind Dividend Rate (assuming that the Board had elected
to pay dividends for such period in-kind and assuming that a Special Default
existed) and the cash dividend actually declared and paid on such Dividend
Payment Date and on the previous Dividend Payment Date during such Semiannual
Payment Period, if any.

               (iii)  All shares of Series B Cumulative Convertible Preferred
Stock issued as a dividend with respect to the Series B Cumulative Convertible
Preferred Stock shall thereupon be duly authorized, validly issued, fully paid
and nonassessable.

          (c)  In the case of shares of Series B Cumulative Convertible
Preferred Stock issued on the Original Issue Date, dividends shall accrue and be
cumulative from such date. In the case of shares of Series B Cumulative Con
vertible Preferred Stock issued as a dividend on shares of Series B Cumulative
Convertible Preferred Stock, dividends shall accrue and be cumulative from the
dividend payment date in respect of which such shares were (or should have been)
issued as a dividend.

          (d)  Each fractional share of Series B Cumulative Convertible
Preferred Stock outstanding shall be entitled to a ratably proportionate amount
of all dividends accruing with respect to each outstanding share of Series B
Cumula tive Convertible Preferred Stock, and all such dividends with respect to
such outstanding fractional shares shall be cumulative and shall accrue (whether
or not declared), and shall be payable in the same manner and at such times as
provided for above with respect to dividends on each outstanding share of Series
B Cumu lative Convertible Preferred Stock. Each fractional share of Series B
Cumulative Convertible Preferred Stock outstanding shall also be entitled to a
ratably propor tionate amount of any other distributions made with respect to
each outstanding share of Series B Cumulative Convertible Preferred Stock, and
all such

                                      -4-
<PAGE>
 
distributions shall be payable in the same manner and at the same time
as distributions on each outstanding share of Series B Cumulative Convertible
Preferred Stock.

          (e)  No dividends or other distributions shall be authorized,
declared, paid or set apart for payment on any shares of Common Stock or other
stock of the Corporation ranking junior as to dividends to the Series B
Cumulative Convertible Preferred Stock (collectively, the "Junior Dividend
Stock") except for dividends or distributions that are not Extraordinary Equity
Payments (defined below in Section 8(h)).

          (f)  If at any time any dividend on the $21.25 Convertible
Exchangeable Preferred Stock (the "$21.25 Preferred Stock") or any other stock
of the Corporation hereafter issued ranking senior as to dividends to the Series
B Cumulative Convertible Preferred Stock (collectively with the $21.25 Preferred
Stock, the "Senior Dividend Stock") shall be in arrears, in whole or in part,
then (except to the extent allowed by the terms of such Senior Dividend Stock)
no cash dividend shall be authorized, declared, paid or set apart for payment on
the Series B Cumulative Convertible Preferred Stock unless and until all accrued
and unpaid dividends with respect to the Senior Dividend Stock for all payment
periods ending on or prior to the date of payment of the current dividend on the
Series B Cumulative Convertible Preferred Stock shall have been authorized,
declared and paid or set apart for payment. Dividends payable in additional
shares of Series B Cumulative Convertible Preferred Stock are permitted and not
subordinated in payment to payment of dividends on the Senior Dividend Stock.

          (g)  No dividends or other distributions shall be authorized,
declared, paid or set apart for payment on any class or series of the
Corporation's stock heretofore or hereafter issued ranking, as to dividends, on
a parity with the Series B Cumulative Convertible Preferred Stock (the "Parity
Dividend Stock") for any period unless full cumulative dividends have been, or
contemporaneously are, authorized, declared and paid or set apart in trust for
such payment on the Series B Cumulative Convertible Preferred Stock for all
dividend payment peri ods terminating on or prior to the date of payment of such
full cumulative divi dends. No full dividends (other than dividends payable in
additional shares of Series B Cumulative Convertible Preferred Stock) shall be
authorized, declared, paid or set apart for payment on the Series B Cumulative
Convertible Preferred Stock for any period unless full cumulative dividends have
been, or contempora neously are, authorized, declared and paid or set apart for
payment on the Parity Dividend Stock for all dividend periods terminating on or
prior to the date of payment of such full cumulative dividends. When accrued
dividends are not paid

                                      -5-
<PAGE>
 
in full on the Series B Cumulative Convertible Preferred Stock and the Parity
Dividend Stock, all cash dividends authorized, declared and paid or set apart
for payment on the Series B Cumulative Convertible Preferred Stock and the
Parity Dividend Stock shall be authorized, declared, paid or set apart for
payment pro rata so that the amount of dividends authorized, declared, paid or
set apart for payment per share on the Series B Cumulative Convertible Preferred
Stock and the Parity Dividend Stock shall in all cases bear to each other the
same ratio that accrued and unpaid dividends per share on the Series B
Cumulative Convertible Preferred Stock and the Parity Dividend Stock bear to
each other.

     4.   Liquidation Preference.
          ---------------------- 

          (a)  The liquidation preference of the Series B Cumulative Convertible
Preferred Stock shall be $200.00 per share (the "Liquidation Preference").
Subject to the full payment of the liquidation preferences of the $21.25
Preferred Stock and the shares of stock of the Corporation hereafter issued
ranking senior as to liquidation rights to the Series B Cumulative Convertible
Preferred Stock (the "Senior Liquidation Stock"), in the event of a liquidation,
dissolution or winding up of the Corporation, whether voluntary or involuntary,
the holders of shares of Series B Cumulative Convertible Preferred Stock shall
be entitled to receive out of the assets of the Corporation, whether such assets
are stated capital or surplus of any nature, an amount equal to the dividends
accrued and unpaid on such shares on the date of final distribution to such
holders, whether or not declared, without interest, plus a sum equal to the
Liquidation Preference, and no more, before any payment shall be made or any
assets distributed to the holders of shares of Common Stock or any other class
or series of the Corporation's stock hereafter issued ranking junior as to
liquidation rights to the Series B Cumulative Convertible Preferred Stock
(collectively, the "Junior Liquidation Stock").

          (b)  The assets of the Corporation available for distribution after
the liquidation preferences of the Senior Liquidation Stock are fully met shall
be distributed ratably among the holders of the Series B Cumulative Convertible
Preferred Stock and any other class or series of the Corporation's stock
hereafter issued ranking on a parity as to liquidation rights with the Series B
Cumulative Convertible Preferred Stock in proportion to the respective
preferential amounts to which each is entitled (but only to the extent of such
preferential amounts); provided, however, that after payment in full of the
                       --------  -------                                   
Liquidation Preferences, the holders of the shares of the Series B Cumulative
Convertible Preferred Stock shall not be entitled to any further participation
in any distribution of assets by the Corporation.  Neither a consolidation or
merger of the Corporation with or into 

                                      -6-
<PAGE>
 
another corporation nor a merger of any other corporation with or into the
Corporation, nor a sale or transfer of all or any part of the Corporation's
assets for cash, securities or other property, will be considered a liquidation,
dissolution or winding up of the Corporation.

     5.   Limitation on Share Repurchase.  If at any time any dividends on the
          ------------------------------                                      
Series B Cumulative Convertible Preferred Stock shall be in arrears or the
Corporation shall have failed to make any purchase of shares of Series B
Cumulative Convertible Preferred Stock tendered to it pursuant to Section 7, the
Corporation shall not -- and the Corporation shall not permit any other
corporation or legal entity directly or indirectly controlled by the Corporation
(collectively, the "subsidiaries") to -- repurchase, redeem, retire or otherwise
acquire any shares of Junior Dividend Stock, Junior Liquidation Stock, or any
warrants, rights, calls or options exercisable for or convertible into any
shares of Junior Dividend Stock or Junior Liquidation Stock, except by
conversion into or exchange for shares of Junior Dividend Stock or Junior
Liquidation Stock and other than purchases, redemptions, retirements or
acquisitions made pursuant to and as required by the terms of any employee
incentive or benefit plan of the Corporation or any subsidiary of the
Corporation in effect on July 24, 1996 or as amended or adopted by the
Corporation with approval of the Executive Committee of the Corporation.
Notwithstanding the preceding sentence, any subsidiary which is wholly owned by
the Corporation may repurchase, redeem, retire or otherwise acquire shares of
its stock.

     6.   Redemption at Option of the Corporation.
          --------------------------------------- 

          (a)  So long as shares of Common Stock shall have traded on the
Primary Exchange (defined below) (i) for at least forty (40) of the forty-five
(45) trading days (each of which trading days shall be after the third
anniversary of the Original Issue Date (the "Third Anniversary")) immediately
preceding the Determination Date (defined below), and (ii) on each of the ten
(10) consecutive trading days immediately prior to the Determination Date
(defined below), at a Closing Price (as hereinafter defined) in excess of the
Hurdle Percentage (defined below) of the conversion price then in effect for the
Series B Cumulative Convertible Preferred Stock for each such trading day, all,
but not less than all, of Series B Cumulative Convertible Preferred Stock may
thereafter be redeemed at the election of the Board of Directors made on any
date (the "Determination Date") on or after the Third Anniversary, for the
Redemption Price (defined below in Section 7(b)), plus an amount in cash equal
to accrued and unpaid dividends thereon, whether or not authorized or declared,
to but excluding the date fixed for redemption. For purposes of the
determination of the Board called for in the

                                      -7-
<PAGE>
 
preceding sentence, the Designated Directors (defined below in Section 13) shall
not vote. The date on which such shares shall be redeemed shall be a date that
is at least ten (10), but no more than thirty (30), business days after the
Determination Date (during which period the holders of the Series B Cumulative
Convertible Preferred Stock may, but shall not be required to, convert such
stock into Common Stock). The Hurdle Percentage shall be 150% from and after the
Third Anniversary, and to the fifth anniversary of the Original Issue Date;
thereafter, the Hurdle Percentage shall be 125%. "Primary Exchange" shall mean
the American Stock Exchange or such other principal national securities exchange
or quotation system on which the Common Stock of the Corporation is quoted or
listed or admitted to trading.

          (b)  Not more than thirty (30) nor less than ten (10) business days
prior to the redemption date fixed by the Board of Directors, the Corporation
shall give notice by hand or overnight courier to the holders of record of
shares of the Series B Cumulative Convertible Preferred Stock to be redeemed,
addressed to such holders at their last addresses as shown upon the stock
transfer books of the Corporation.  Each such notice of redemption shall specify
the date fixed for redemption; the Redemption Price (defined below in Section
7(b)) plus an amount in cash equal to accrued and unpaid dividends thereon,
whether or not authorized or declared, to but excluding the date fixed for
redemption; the place or places of payment; that payment will be made upon
presentation and surrender of the shares of Series B Cumulative Convertible
Preferred Stock; that on and after the redemption date dividends will cease to
accrue on such shares; the then effective conversion price pursuant to Section
8; and that the right of holders to convert shares of Series B Cumulative
Convertible Preferred Stock shall terminate at the close of business on the
business day prior to the redemption date (unless the Corporation defaults in
the payment of the Redemption Price plus an amount in cash equal to accrued and
unpaid dividends thereon, whether or not authorized or declared, to but
excluding the date fixed for redemption).

          (c)  Any notice as herein provided shall be deemed to be given when
delivered to the address specified in the preceding section. On or after the
date fixed for redemption as stated in such notice, each holder of the shares
called for redemption, unless such holder has exercised such holder's right to
convert shares of Series B Cumulative Convertible Preferred Stock as provided
above, shall surrender the certificate representing such shares to the
Corporation at the place designated in such notice and shall thereupon be
entitled to receive payment of the Redemption Price (defined below in Section
7(b)) plus an amount in cash equal to accrued and unpaid dividends thereon,
whether or not authorized or declared, to but excluding the date fixed for
redemption.  If less than all the shares 

                                      -8-
<PAGE>
 
evidenced by any such surrendered certificate are redeemed, a new certificate
shall be issued representing the unredeemed shares. Notice having been given as
aforesaid, if, on the date fixed for redemption, funds necessary for the
redemption shall be available therefor and shall have been irrevocably deposited
or set aside in trust for the holders of the shares of Series B Cumulative
Convertible Preferred Stock, then, notwithstanding that the certificates
representing any shares so called for redemption shall not have been
surrendered, dividends with respect to the shares so called shall cease to
accrue after the date fixed for redemption, such shares shall no longer be
deemed outstanding, the holders thereof shall cease to be stockholders of the
Corporation and all rights whatsoever with respect to the shares so called for
redemption (except the right of the holders to receive the Redemption Price plus
an amount in cash equal to accrued and unpaid dividends thereon, whether or not
authorized or declared, to but excluding the date fixed for redemption, without
interest upon surrender of their certificates therefor) shall terminate. If
funds legally available for such purpose are not sufficient for redemption of
the shares of Series B Cumulative Convertible Preferred Stock to be redeemed,
then the certificates representing such shares shall be deemed not to be
surrendered, such shares shall remain outstanding and the rights of holders of
shares of Series B Cumulative Convertible Preferred Stock thereafter shall
continue to be only those of a holder of shares of the Series B Cumulative
Convertible Preferred Stock.

          (d)  Except as provided in Section 7, the shares of Series B
Cumulative Convertible Preferred Stock shall not be subject to the operation of
any mandatory purchase, retirement or sinking fund.

     7.   Mandatory Repurchase and Repurchase at Option of the Holder.
          ----------------------------------------------------------- 

          (a)  On the eighth anniversary of the Original Issue Date, the
Corporation shall purchase from each holder of shares of Series B Cumulative
Convertible Preferred Stock one-third of the number of shares of the Series B
Cumulative Convertible Preferred Shares held by such holder on such eighth
anniversary.   On the ninth anniversary of the Original Issue Date, the
Corporation shall purchase from each holder of shares of Series B Cumulative
Convertible Preferred Stock one-half of the number of shares of the Series B
Cumulative Convertible Preferred Shares held by such holder on such ninth
anniversary.  On the tenth anniversary of the Original Issue Date, the
Corporation shall purchase from each holder of shares of Series B Cumulative
Convertible Preferred Stock the number of shares of the Series B Cumulative
Convertible Preferred Shares held by such holder on such tenth anniversary.
Repurchases made pursuant to this Section 7(a) shall be effected on such
anniversary date (or such other day as the 

                                      -9-
<PAGE>
 
holder and the Corporation may agree) and shall be for the Redemption Price
(defined below in Section 7(b)) plus an amount in cash equal to the accrued and
unpaid dividends thereon, whether or not authorized or declared, to but
excluding the date fixed for repurchase. Any shares of Series B Cumulative
Convertible Preferred Stock which would have accrued but have not been paid on
any shares tendered for purchase shall be deemed to be tendered for purchase.

          (b)  (i)  If one or more Special Defaults shall occur at any time or
from time to time on or after the Original Issue Date, each holder of shares of
the Series B Cumulative Convertible Preferred Stock shall have the right, at
such holder's option exercisable at any time within 120 days after the happening
of each such Special Default, to require the Corporation to purchase all or any
part of the shares of Series B Cumulative Convertible Preferred Stock then held
by such holder as such holder may elect at the Redemption Price (defined below)
plus, in each case, an amount in cash equal to the accrued and unpaid dividends
thereon, whether or not authorized or declared, to but excluding the date fixed
for redemption. Any shares of Series B Cumulative Convertible Preferred Stock
which would have accrued but have not been paid on any shares tendered for
purchase shall be deemed to be tendered for purchase.  The "Redemption Price"
shall be the Liquidation Preference where there have been no Special Defaults,
and -- after there has been one or more Special Defaults -- shall be 130% of the
greater of the Liquidation Preference or the market value of the Common Stock
(valued at the average of the Closing Prices on the preceding twenty (20)
trading days immediately prior to the occurrence of the Special Default) into
which the Series B Cumulative Convertible Preferred Stock would then be
convertible assuming such shares to be immediately convertible (whether or not
such shares were then actually convertible);

               (ii) A "Special Default" shall mean any of the following events
which occur after the Original Issuance Date and while any shares of the Series
B Cumulative Convertible Preferred Stock are outstanding:

                    (1)  the disbanding or other restructuring,
reorganization, or reconstitution (including without limitation change in the
number of members) of the Executive Committee of the Board without the prior
written approval of a majority of the members of the Executive Committee who
were members prior to such change (and, for so long as the holders of the Series
B Cumulative Convertible Preferred Stock shall have the right to designate more
than one director to the Executive Committee pursuant to Section 13(b) below,
including the members so designated by the holders of the Series B Cumulative
Convertible Preferred Stock);

                                     -10-
<PAGE>
 
                    (2)  the taking of any of the following actions by the
Corporation or the Board without the approval of a majority of the members of
the Executive Committee of the Board (whether or not such action was taken by
the Board in view of its fiduciary duties pursuant to the last sentence of
Section 3.3(A) of the By-Laws of the Corporation, as amended): (A) any borrowing
or guarantee by the Corporation exceeding $15 million, (B) except for issuance
of stock or stock options pursuant to the Corporation's incentive compensation
plans or programs, any issuance of stock (whether common or preferred, whether
voting or non-voting, whether junior, pari passu, or senior to the Series B
Cumulative Convertible Preferred Stock) other than Common Stock of the
Corporation in an aggregate amount not exceeding five percent (5%) of the Common
Stock of the Corporation issued and outstanding on the Original Issue Date, (C)
any strategic alliance (other than a construction joint venture) involving a
capital commitment by the Corporation exceeding $5 million, (D) any asset sale
by the Corporation or lease as lessor exceeding $5 million (other than equipment
dispositions in the normal course of business); (E) any redemption or amendment
of the Rights (defined below) or the preferred stock of the Corporation issuable
upon the exercise of such Rights, or any amendment of the Rights Agreement
(defined below), and (F) any termination of (other than a termination upon
expiration) or amendment to the management agreement between the Corporation and
Tutor-Saliba Corporation; provided, however, that for purposes of this Section
                          --------  -------                                   
8(b)(ii)(2), approval of the Executive Committee shall not be required for any
decision by the Board of Directors to redeem the Series B Cumulative Convertible
Preferred Stock pursuant to Section 6(a);

                    (3)  any change by the Corporation in the composition of the
Executive Committee of the Board which results in members of such Committee
selected by the holders of the Series B Cumulative Convertible Preferred Stock
pursuant to Section 13(b) below being fewer than the number of directors that
the holders of the Series B Cumulative Convertible Preferred Stock are then
entitled to designate pursuant to that provision or the failure of the
Corporation to nominate for director the persons designated by the holders of
the Series B Cumulative Convertible Preferred Stock in accordance with Section
13(a) below; or

                    (4)  solely for purposes of the right to elect additional
directors pursuant to Section 9(b) and not for purposes of any other Section,
the failure of the Corporation to authorize, declare, and pay dividends payable
in Series B Cumulative Convertible Preferred Stock when due in accordance with
Section 3.

                                     -11-
<PAGE>
 
          (c)  The date fixed for each such repurchase shall be (x) the
anniversary of the Original Issue Date immediately succeeding the notice given
pursuant to Section 7(a), or (y) the 121st day following the occurrence of the
Special Default giving rise to a repurchase pursuant to Section 7(b).  The place
of payment shall be at an office or agency in Boston, Massachusetts fixed
therefor by the Corporation or, if not fixed, at the principal executive office
of the Corporation.

          (d)  The Corporation shall, within 20 days of the occurrence of a
Special Default, give a written notice thereof by registered or certified mail,
postage prepaid, return receipt requested, to the holders of record of shares of
the Series B Cumulative Convertible Preferred Stock, addressed to such holders
at their last addresses as shown upon the stock transfer books of the
Corporation. Each such notice shall specify the Special Default which has
occurred and the date of such occurrence, the place or places of payment, the
then effective conversion price pursuant to Section 8, the then effective
repurchase price and the date the right of such holder to require such
repurchase shall terminate.  Any notice that is mailed as herein provided shall
be conclusively presumed to have been duly given, whether or not the holder of
shares of Series B Cumulative Convertible Preferred Stock receives such notice;
and failure to give such notice by mail, or any defect in such notice, to the
holders of any shares shall not affect the validity of the proceedings for the
repurchase of any other shares of Series B Cumulative Convertible Preferred
Stock.

          (e)  (i)  On the date fixed for any such repurchase, each holder of
shares of Series B Cumulative Convertible Preferred Stock who elects to have
shares of Series B Cumulative Convertible Preferred Stock held by it purchased
shall surrender the certificate representing such shares to the Corporation at
the place designated in such notice together with an election to have such
purchase made and shall thereupon be entitled to receive payment therefor
provided in this Section 7.  If less than all the shares represented by any such
surrendered certificate are repurchased, a new certificate shall be issued
representing the unpurchased shares. Dividends with respect to the shares of
Series B Cumulative Convertible Preferred Stock so purchased shall cease to
accrue after the date so purchased, such shares shall no longer be deemed
outstanding after such date and the holders thereof shall cease to be
stockholders of the Corporation and all rights whatsoever with respect to the
shares so purchased shall terminate.

                                     -12-
<PAGE>
 
                    (ii)   If the funds legally available for such purchase are
not sufficient to purchase all the shares of Series B Cumulative Convertible
Preferred Stock tendered to the Corporation for purchase, the Corporation shall
purchase the greatest number of whole shares for which such funds are so
available on a pro rata basis among all tendering holders based on the ratio of
the number of shares tendered by each of them to the aggregate amount of all
shares so tendered, and the certificates representing the unpurchased shares
shall be deemed not to be surrendered for repurchase, such unpurchased shares
shall remain outstanding and the rights of the holders of shares of Series B
Cumulative Convertible Preferred Stock thereafter shall continue to be those of
a holder of shares of the Series B Cumulative Convertible Preferred Stock;
provided, however, the Corporation shall thereafter be required to repurchase
- --------  -------                                                            
all such remaining shares at the first date it has sufficient funds legally
available for such purpose at the price it would have paid at the date such
shares were actually tendered and the Corporation shall give notice as aforesaid
to each holder whose shares were not repurchased for such reason and such holder
shall thereafter have the right to elect to have such shares repurchased, such
election to be made within 30 days of receipt of such notice.  For purposes of
this Section, the Corporation shall be deemed not to have sufficient funds
legally available for any such purchase if the Board of Directors reasonably
determines that immediately after such repurchase the Corporation would be
insolvent.

                    (iii)  For so long as there remain shares of Series B
Cumulative Convertible Preferred Stock that have been surrendered for repurchase
in accordance with this Section 7 that have not been so repurchased by the
Corporation:  (1) the number of members of the Board of Directors shall be
increased by such number as is necessary to allow the election of the directors
specified in clause (2) of this Section, and (2) the holders of the Series B
Cumulative Convertible Preferred Stock, voting separately as a class, shall have
the right to elect an additional number of directors to the Board of Directors
such that the Designated Directors (defined below in Section 13) who are serving
on the Board of Directors, plus the directors elected by such holders voting as
a class under this clause, constitute a majority of Board.  The right of the
holders of the Series B Cumulative Convertible Preferred Stock to vote for such
additional directors shall terminate when shares of the Series B Cumulative
Convertible Preferred Stock properly tendered for repurchase pursuant to this
Section 7 have been repurchased.  The term of office of all directors so elected
shall terminate immediately upon the termination of the right of the holders of
the Series B Cumulative Convertible Preferred Stock to vote for such additional
directors, and the number of directors of the Board of Directors shall
immediately thereafter be reduced.

                                     -13-
<PAGE>
 
                    (iv)   The foregoing right of the holders of the Series B
Cumulative Convertible Preferred Stock with respect to the election of
additional directors may be exercised at each annual meeting of stockholders or
at any special meeting of stockholders held for such purpose. If the right to
elect additional directors shall have accrued to the holders of the Series B
Cumulative Convertible Preferred Stock more than thirty (30) days preceding the
date established for the next annual meeting of stockholders, the President of
the Corporation shall, within five (5) days after the delivery to the
Corporation at its principal office of a written request for a special meeting
signed by the holders of at least 10% of all outstanding shares of the Series B
Cumulative Convertible Preferred Stock, call a special meeting of the holders of
the Series B Cumulative Convertible Preferred Stock to be held as promptly as
practicable after the delivery of such request for the purpose of electing such
additional directors.

                    (v)    The holders of the Series B Cumulative Convertible
Preferred Stock voting as a class shall have the right to remove with or without
cause at any time and replace any directors such holders shall have elected
pursuant to this Section 7 and the holders of each other class of stock of the
Corporation shall not have the right to remove any such directors.

     8.   Conversion.
          ---------- 

          (a)  Right of Conversion.  Each share of Series B Cumulative
               -------------------                                    
Convertible Preferred Stock, whether issued originally or in-kind as a dividend
payment, shall be convertible at the option of the holder thereof, at any time
(provided, however, that where the Corporation has elected to redeem such stock,
- ---------  -------                                                              
the option of the holder described in this section must be exercised prior to
the close of business on the business day prior to the date fixed for redemption
of such share as herein provided), into fully paid and nonassessable shares of
Common Stock and such other securities and property as hereinafter provided, at
the rate of that number of shares of Common Stock for each full share of Series
B Cumulative Convertible Preferred Stock that is equal to the Liquidation
Preference plus an amount in cash equal to the accrued and unpaid dividends
thereon, whether or not authorized or declared, divided by the conversion price
applicable per share of Common Stock.  For purposes of this Section 8(a), the
"conversion price" applicable per share of Common Stock shall initially be equal
to Nine Dollars and Sixty-Eight Cents ($9.68), and shall be adjusted from time
to time after the Original Issue Date in accordance with the provisions of this
Section 8.

                                     -14-
<PAGE>
 
          (b)  Conversion Procedures.
               --------------------- 

               (i)    Any holder of shares of Series B Cumulative Convertible
Preferred Stock desiring to convert such shares into Common Stock shall
surrender the certificate or certificates representing such shares of Series B
Cumulative Convertible Preferred Stock at the office of the transfer agent for
the Series B Cumulative Convertible Preferred Stock, which certificate or
certificates, if the Corporation shall so require, shall be duly endorsed to the
Corporation or in blank, or accompanied by proper instruments of transfer to the
Corporation or in blank, accompanied by irrevocable written notice to the
Corporation that the holder elects so to convert such shares of Series B
Cumulative Convertible Preferred Stock and specifying the name or names (with
address or addresses) in which a certificate or certificates evidencing shares
of Common Stock are to be issued.

               (ii)   Subject to Section 8(k) hereof, no payments or adjustments
in respect of dividends on shares of Series B Cumulative Convertible Preferred
Stock surrendered for conversion or on account of any dividend on the Common
Stock issued upon conversion shall be made upon the conversion of any shares of
Series B Cumulative Convertible Preferred Stock.

               (iii)  The Corporation shall, as soon as practicable after such
deposit of certificates representing shares of Series B Cumulative Convertible
Preferred Stock accompanied by the written notice and compliance with any other
conditions herein contained, deliver at such office of the transfer agent to the
person for whose account such shares of Series B Cumulative Convertible
Preferred Stock were so surrendered or to the nominee or nominees of such person
certificates representing the number of full shares of Common Stock to which
such person shall be entitled as aforesaid, together with a cash adjustment in
respect of any fraction of a share of Common Stock as hereinafter provided.
Subject to the following provisions of this paragraph, such conversion shall be
deemed to have been made as of the date of such surrender of the shares of
Series B Cumulative Convertible Preferred Stock to be converted, and the person
or persons entitled to receive the Common Stock deliverable upon conversion of
such Series B Cumulative Convertible Preferred Stock shall be treated for all
purposes as the record holder or holders of such Common Stock on such date.

          (c)  Adjustment of Conversion Price.  The conversion price at which a
               ------------------------------                                  
share of Series B Cumulative Convertible Preferred Stock is convertible into
Common Stock shall be subject to adjustment from time to time as follows:

                                     -15-
<PAGE>
 
               (i)    (1)  In case the Corporation shall pay or make a dividend
or other distribution on its Common Stock exclusively in Common Stock or shall
pay or make a dividend or other distribution on any other class of stock of the
Corporation which dividend or distribution includes Common Stock or shall
exchange outstanding Rights (as defined in Section 8(j) hereof) for shares of
Common Stock, the conversion price in effect at the opening of business on the
day following the date fixed for the determination of stockholders entitled to
receive such dividend or other distribution or to exchange such Rights shall be
reduced by multiplying such conversion price by a fraction of which the
numerator shall be the number of shares of Common Stock outstanding at the close
of business on the date fixed for such determination and the denominator shall
be the sum of such number of shares and the total number of shares constituting
such dividend or other distribution or exchange, such reduction to become
effective immediately after the opening of business on the day following the
date fixed for such determination.

                      (2)  In case the Corporation shall issue or otherwise sell
or distribute shares of Common Stock for a consideration per share in cash or
property less than the most recent Closing Price prior to the time of such
issuance (and, if shares are issued, sold, or distributed pursuant to the
exercise or conversion of options, warrants, convertible securities, or other
rights, the exercise or conversion price thereof when such options, warrants,
convertible securities, or rights were granted or issued was less than the
Closing Price (defined below in Section 8(h) at the time of issuance of such
options, warrants, convertible securities, or other rights), the conversion
price then in effect shall be reduced by multiplying such conversion price by a
fraction of which the numerator shall be the number of shares of Common Stock
outstanding immediately prior to such issuance, sale or distribution plus the
number of shares of Common Stock which the aggregate consideration received by
the Corporation for such issuance, sale or distribution (such consideration, if
other than cash, as determined by the Board of Directors, whose determination
shall be conclusive and described in a vote of the Board of Directors) would
purchase at the current market price per share and the denominator shall be the
number of shares of Common Stock outstanding immediately after giving effecting
to such issuance, sale or distribution.

               (ii)   In case the Corporation shall pay or make a dividend or
other distribution on its Common Stock consisting exclusively of, or shall
otherwise issue to all or substantially all holders of its Common Stock, rights
or warrants entitling the holders thereof to subscribe for or purchase shares of

                                     -16-
<PAGE>
 
Common Stock at a price per share less than the then current market price per
share (determined as provided in subparagraph (vii) of this Section 8(c)) of the
Common Stock on the date fixed for the determination of stockholders entitled to
receive such rights or warrants, the conversion price in effect at the opening
of business on the day following the date fixed for such determination shall be
reduced by multiplying such conversion price by a fraction of which the
numerator shall be the number of shares of Common Stock outstanding at the close
of business on the date fixed for such determination plus the number of shares
of Common Stock which the aggregate of the offering price of the total number of
shares of Common Stock so offered for subscription or purchase would purchase at
such current market price and the denominator shall be the number of shares of
Common Stock outstanding at the close of business on the date fixed for such
determination plus the number of shares of Common Stock so offered for
subscription or purchase, such reduction to become effective immediately after
the opening of business on the day following the date fixed for such
determination.  In case any rights or warrants referred to in this subparagraph
(ii) in respect of which an adjustment shall have been made shall expire
unexercised, the conversion price shall be readjusted at the time of such
expiration to the conversion price that would have been in effect if no
adjustment had been made on account of the distribution or issuance of such
expired rights or warrants.  For the purposes of this Section 8(c)(ii), if both
a Distribution Date and a Section 11(a)(ii) Event (as such terms are defined in
the Rights Agreement by and between the Corporation and the First National Bank
at Boston, dated as of September 23, 1988, as amended (the "Rights  Agreement"))
shall have occurred, then the later to occur of such events shall be deemed to
constitute an issuance of rights to purchase shares of Common Stock.

               (iii)  In case outstanding shares of Common Stock shall be
subdivided into a greater number of shares of Common Stock, the conversion price
in effect at the opening of business on the day following the day upon which
such subdivision becomes effective shall be proportionately reduced, and
conversely, in case outstanding shares of Common Stock shall each be combined
into a smaller number of shares of Common Stock, the conversion price in effect
at the opening of business on the day following the day upon which such
combination becomes effective shall be proportionately increased, such reduction
or increase, as the case may be, to become effective immediately after the
opening of business on the day following the day upon which such subdivision or
combination becomes effective.

               (iv)   (1)  In case the Corporation shall, by dividend or
otherwise, make a Section 8(c)(iv) Distribution (defined below in Section 8(h))
to 

                                     -17-
<PAGE>
 
all or substantially all holders of its Common Stock, the conversion price shall
be reduced so that the same shall equal the price determined by multiplying the
conversion price in effect immediately following the close of business on the
Determination Date (as defined in Section 8(h)) by a fraction of which the
numerator shall be the current market price per share (determined as provided in
subparagraph (vii) of this Section 8(c)) of the Common Stock on the
Determination Date less the fair market value (as determined by the Board of
Directors, whose determination shall be conclusive and described in a resolution
of the Board of Directors), on the date of such effectiveness, of the portion of
the Section 8(c)(iv) Distribution so distributed applicable to one share of
Common Stock and the denominator shall be such current market price per share of
the Common Stock, such reduction to become effective immediately prior to the
opening of business on the day following the Determination Date. If the Board of
Directors so determines as aforesaid the fair market value of any distribution
for purposes of this subparagraph (iv) by reference to the actual or when-issued
trading market for any Securities comprising such distribution, it must in doing
so consider the prices in such market over the same period used in computing the
current market price per share of Common Stock pursuant to subparagraph (vii) of
this Section 8(c).

                      (2)  Notwithstanding the foregoing, if the Corporation
elects to reserve, for distribution to the holders of the Series B Cumulative
Convertible Preferred Stock upon the conversion of the shares of Series B
Cumulative Convertible Preferred Stock, the evidences of the Corporation's
indebtedness, shares of any class of stock, or assets that would have been
distributed to the holders of the Series B Cumulative Convertible Preferred
Stock if they had converted their shares into shares of Common Stock so that any
such holder converting shares of Series B Cumulative Convertible Preferred Stock
will receive upon such conversion, in addition to the shares of the Common Stock
to which such holder is entitled, the amount and kind of such evidences of the
Corporation's indebtedness, shares of any class of stock, or assets which such
holder would have received if such holder had, immediately prior to the
Determination Date for such distribution of securities, converted its shares of
Series B Cumulative Convertible Preferred Stock into Common Stock, the fair
market value of the Securities shall, for purposes of this subparagraph (iv), be
deemed to be zero.

               (v)    Subject to the last sentence of this subparagraph (v), in
case the Corporation shall, by dividend or otherwise, at any time distribute to
all holders of its Common Stock cash (excluding any cash representing an amount
per share of capital stock of the Corporation to the extent such cash does not

                                     -18-
<PAGE>
 
constitute an Extraordinary Equity Payment), the conversion price shall be
reduced so that the same shall equal the price determined by multiplying the
conversion price in effect immediately prior to the effectiveness of the
conversion price reduction contemplated by this subparagraph (v) by a fraction
of which the numerator shall be the current market price per share (determined
as provided in subparagraph (vii) of this Section 8(c)) of the Common Stock on
the Determination Date less the amount of cash so distributed and not excluded
as above provided applicable to one share of Common Stock and the denominator
shall be such current market price per share of the Common Stock, such reduction
to become effective immediately prior to the opening of business on the day
following the Determination Date.  Notwithstanding the foregoing, if the
Corporation elects to reserve the cash to be distributed for distribution to the
holders of the Series B Cumulative Convertible Preferred Stock upon the
conversion of the shares of Series B Cumulative Convertible Preferred Stock so
that any such holder converting shares of Series B Cumulative Convertible
Preferred Stock will receive upon such conversion, in addition to the shares of
the Common Stock to which such holder is entitled, the amount of cash which such
holder would have received if such holder had, immediately prior to the
Determination Date for such distribution of cash, converted its shares of Series
B Cumulative Convertible Preferred Stock into Common Stock, then the conversion
price shall not be so reduced.

               (vi)   In case a tender or exchange offer made by the Corporation
or any subsidiary of the Corporation for all or any portion of the Corporation's
Common Stock shall expire and such tender or exchange offer shall involve the
payment by the Corporation or such subsidiary of consideration per share of
Common Stock having a fair market value (as determined by the Board of
Directors, whose determination shall be conclusive and described in a resolution
of the Board of Directors) at the last time (the "Expiration Time") tenders or
exchanges may be made pursuant to such tender or exchange offer (as it shall
have been amended) that exceeds the current market price per share (determined
as provided in subparagraph (vii) of this Section 8(c)) of the Common Stock on
the Trading Day next succeeding the Expiration Time, the conversion price shall
be reduced so that the same shall equal the price determined by multiplying the
conversion price in effect immediately prior to the Expiration Time by a
fraction of which the numerator shall be the number of shares of Common Stock
outstanding (including any tendered or exchanged shares) on the Expiration Time
multiplied by the current market price per share (determined as provided in
subparagraph (vii) of this Section 8(c)) of the Common Stock on the Trading Day
next succeeding the Expiration Time and the denominator shall be the sum of (x)
the fair market value (determined as 

                                     -19-
<PAGE>
 
aforesaid) of the aggregate consideration payable to stockholders based on the
acceptance (up to any maximum specified in the terms of the tender or exchange
offer) of all shares validly tendered or exchanged and not withdrawn as of the
Expiration Time (the shares deemed so accepted, up to any such maximum, being
referred to as the "Purchased Shares") and (y) the product of the number of
shares of Common Stock outstanding (less any Purchased Shares) on the Expiration
Time and the current market price per share (determined as provided in
subparagraph (vii) of this Section 8(c)) of the Common Stock on the Trading Day
next succeeding the Expiration Time, such reduction to become effective
immediately prior to the opening of business on the day following the Expiration
Time.

               (vi)   For purposes of any computation under this section, the
current market price per share of Common Stock on any date shall be deemed to be
the volume-weighted average trading price of the Common Stock for the five-day
period before the earlier of the day in question and the "ex" date with respect
to any issuance or distribution requiring such computation; provided, however,
                                                            --------  ------- 
that for purposes of clause (3) of this paragraph, the current market price per
share shall be deemed to be the volume-weighted average trading price of the
Common Stock for the five-day period after the "ex date." For purposes of this
subparagraph (vii), the term "ex" date, (1) when used with respect to any
issuance or distribution, means the first date on which the Common Stock trades
regular way on the relevant exchange or in the relevant market from which the
Closing Price was obtained without the right to receive such issuance or
distribution, (2) when used with respect to any subdivision or combination of
shares of Common Stock, means the first date on which the Common Stock trades
regular way on such exchange or in such market after the time at which such
subdivision or combination becomes effective, and (3) when used with respect to
any tender or exchange offer, means the first date on which the Common Stock
trades regular way on such exchange or in such market after the Expiration Time
of such offer.

               (viii) The Corporation may make such reductions in the conversion
price, in addition to those required by subparagraphs (i), (ii), (iii), (iv),
(v) and (vi) of this Section 8(c), as it considers to be advisable to avoid or
diminish any income tax to holders of Common Stock or rights to purchase Common
Stock resulting from any dividend or distribution of stock (or rights to acquire
stock) or from any event treated as such for income tax purposes.

               (ix)   No adjustment in the conversion price shall be required
unless such adjustment would require an increase or decrease of at least 1% in
the conversion price; provided, however, that any adjustments which by 
                      --------  -------                                         

                                     -20-
<PAGE>
 
reason of this subparagraph (ix) are not required to be made shall be carried
forward and taken into account in any subsequent adjustment.

               (x)    Notwithstanding any other provision of this Section 8 and
without implication that the contrary would otherwise be true, no issuance,
dividend or distribution requiring adjustment of the conversion price pursuant
to Section 8(c) hereof shall be deemed to have occurred in the event that, upon,
following or in connection with the redemption or expiration of the Rights or
the termination of the Rights Agreement or otherwise, the Corporation enters
into a new agreement that is comparable in purpose and effect to the Rights
Agreement (as determined by the Board of Directors, whose determination shall be
conclu sive) and distributes rights to purchase Preferred Stock (or other
similar stock purchase rights under such agreement that are attached to the
Common Stock) to the holders of Common Stock.

               (xi)   Whenever the conversion price is adjusted as herein
provided:

                      (1)  the Corporation shall compute the adjusted conversion
price and shall prepare a certificate signed by the Treasurer of the Corporation
setting forth the adjusted conversion price and showing in reasonable detail the
acts upon which such adjustment is based, and such certificate shall forthwith
be filed with the transfer agent for the Series B Cumulative Convertible
Preferred Stock; and

                      (2)  a notice stating the conversion price has been
adjusted and setting forth the adjusted conversion price shall forthwith be
required, and as soon as practicable after it is required, such notice shall be
mailed by the Corporation to all record holders of shares of Series B Cumulative
Convertible Preferred Stock at their last addresses as they shall appear upon
the stock transfer books of the Corporation.

          (d)  No Fractional Shares.  No fractional shares or scrip representing
               --------------------                                             
fractional shares of Common Stock shall be issued upon conversion of Series B
Cumulative Convertible Preferred Stock.  If more than one certificate
representing shares of Series B Cumulative Convertible Preferred Stock shall be
surrendered for conversion at one time by the same holder, the number of full
shares issuable upon conversion thereof shall be computed on the basis of the
aggregate number of shares of Series B Cumulative Convertible Preferred Stock so
surrendered.  Instead of any fractional share of Common Stock that would
otherwise be issuable upon conversion of any shares of Series B Cumulative

                                     -21-
<PAGE>
 
Convertible Preferred Stock, the Corporation shall pay a cash adjustment in
respect of such fractional interest in an amount equal to the same fraction of
the market price per share of Common Stock (as determined by the Board of
Directors or in any manner prescribed by the Board of Directors, which, so long
as the Common Stock is listed on the Primary Exchange, shall be the reported
last sale price regular way on the Primary Exchange) at the close of business on
the day of conversion.

          (e)  Reclassification, Consolidation, Merger, or Sale of Assets. If 
               ----------------------------------------------------------  
any capital reorganization or reclassification of the capital stock of the
Corporation, or consolidation or merger of the Corporation with another
corporation, or the sale of all or substantially all of its assets to another
corporation shall be effected in such a way that holders of Common Stock shall
be entitled to receive stock, securities, cash or other property with respect to
or in exchange for Common Stock, then, as a condition of such reorganization,
reclassification, consolidation, merger or sale, lawful and adequate provision
shall be made whereby the holders of the Series B Cumulative Convertible
Preferred Stock shall have the right to acquire and receive upon conversion of
the Series B Cumulative Convertible Preferred Stock, which right shall be pari
                                                                          ----
passu with the rights of holders of Parity Dividend Stock and senior to the
- -----                                                                      
rights of the holders of Junior Dividend Stock and Junior Liquidation Stock (but
after and subject to the rights of holders of Senior Dividend Stock and Senior
Liquidation Stock, if any), such shares of stock, securities, cash or other
property issuable or payable (as part of the reorganization, reclassification,
consolidation, merger or sale) with respect to or in exchange for such number of
outstanding shares of Common Stock as would have been received upon conversion
of the Series B Cumulative Convertible Preferred Stock at the conversion price
then in effect, whether or not such stock is then convertible.  The Corporation
will not effect any such consolidation, merger or sale, unless prior to the
consummation thereof the successor corporation (if other than the Corporation)
resulting from such consolidation or merger or the corporation purchasing such
assets shall assume by written instrument in reasonable and customary form
mailed or delivered to the holders of the Series B Cumulative Convertible
Preferred Stock at the last address of each such holder appearing on the books
of the Corporation, the obligation to deliver to each such holder such shares of
stock, securities or assets as, in accordance with the foregoing provisions,
such holder may be entitled to purchase.

                                     -22-
<PAGE>
 
          (f)  Reservation of Shares; Transfer Taxes; Etc.
               ------------------------------------------ 

               (i)    The Corporation shall at all times reserve and keep
available, out of its authorized and unissued stock, solely for the purpose of
effecting the conversion of the Series B Cumulative Convertible Preferred Stock,
such number of shares of its Common Stock or Common Stock free of preemptive
rights as shall from time to time be sufficient to effect the conversion of all
shares of Series B Cumulative Convertible Preferred Stock from time to time
outstanding. The Corporation shall from time to time, in accordance with the
laws of the State of Massachusetts, increase the number of authorized shares of
Common Stock if at any time the number of shares of authorized and unissued
Common Stock shall not be sufficient to permit the conversion of all the then
outstanding shares of Series B Cumulative Convertible Preferred Stock.

               (ii)   If any shares of Common Stock required to be reserved for
purposes of conversion of the Series B Cumulative Convertible Preferred Stock
hereunder require registration with or approval of any governmental authority
under any Federal or State law before such shares may be issued upon conversion,
the Corporation will in good faith and as expeditiously as possible endeavor to
cause such shares to be duly registered or approved, as the case may be.  If the
Common Stock is listed on the American Stock Exchange or any other national
securities exchange or national quotation service, the Corporation will list and
keep listed on such exchange, upon official notice of issuance, all shares of
Common Stock issuable upon conversion of the shares of Series B Cumulative
Convertible Preferred Stock.

               (iii)  The Corporation shall pay any and all issue or other taxes
that may be payable in respect of any issue or delivery of shares of Common
Stock on conversion of the Series B Cumulative Convertible Preferred Stock.  The
Corporation shall not, however, be required to pay any tax which may be payable
in respect of any transfer involved in the issue or delivery of Common Stock (or
other securities or assets) in a name other than that in which the shares of
Series B Cumulative Convertible Preferred Stock so converted were registered,
and no such issue or delivery shall be made unless and until the person
requesting such issue has paid to the Corporation the amount of such tax or has
established, to the satisfaction of the Corporation, that such tax has been
paid.

                                     -23-
<PAGE>
 
          (g)  Prior Notice of Certain Events. In case:
               ------------------------------          

               (i)    the Corporation shall declare or authorize a redemption or
repurchase of in excess of five percent of the then outstanding shares of Common
Stock; or

               (ii)   the Corporation shall authorize the granting to all
holders of Common Stock of rights or warrants to subscribe for or purchase any
shares of stock of any class or of any other rights or warrants (other than
pursuant to the Rights Agreement or, following the redemption or expiration of
the Rights or the termination of the Rights Agreement, any new shareholder
rights agreement that is comparable in purpose and effect to the Rights
Agreement); or

               (iii)  of any reclassification of Common Stock (other than a
subdivision or combination of the outstanding Common Stock, or a change in par
value, or from par value to no par value, or from no par value to par value), or
of any consolidation or merger to which the Corporation is a party and for which
approval of any stockholders of the Corporation shall be required, or of the
sale or transfer of all or substantially all of the assets of the Corporation or
of any compulsory share exchange whereby the Common Stock is converted into
other securities, cash or other property; or

               (iv)   of the voluntary or involuntary dissolution, liquidation
or winding up of the Corporation;

then the Corporation shall cause to be filed with the transfer agent for the
Series B Cumulative Convertible Preferred Stock, and shall cause to be mailed to
the holders of record of the Series B Cumulative Convertible Preferred Stock, at
their last addresses as they shall appear upon the stock transfer books of the
Corporation, at least fifteen days prior to the applicable record date
hereinafter specified, a notice stating, as the case may be, (x) the record date
(if any) for the purpose of such dividend, distribution, redemption, repurchase
or granting of rights or warrants or, if no record date is to be set, the date
as of which the holders of Common Stock of record to be entitled to such
dividend, distribution, redemption, rights or warrants are to be determined or
(y) the date on which such reclassification, consolidation, merger, sale,
transfer, share exchange, dissolution, liquidation or winding up is expected to
become effective, and the date, if any, as of which it is expected that holders
of shares of Common Stock of record shall be entitled to exchange their shares
of Common Stock for securities or other property deliverable upon such
reclassification, consolidation, merger, sale, transfer, share 

                                     -24-
<PAGE>
 
exchange, dissolution, liquidation or winding up (but no failure to mail such
notice or any defect therein or in the mailing thereof shall affect the validity
of the corporate action required to be specified in such notice).

          (h)  Definitions.  The following definitions shall apply to terms used
               -----------                                                      
in this Section 8:

               (i)    "Closing Price" on any day shall mean the closing sale
price regular way on such day or, in case no such sale takes place on such day,
the average of the reported closing bid and asked prices regular way, in each
case on the Primary Exchange, or, if not quoted or listed or admitted to trading
on any national securities exchange or quotation system, the average of the
closing bid and asked prices of the Common Stock on the over-the-counter market
on the day in question as reported by the National Quotation Bureau
Incorporated, or a similarly generally accepted reporting service, or if not so
available in such manner, as furnished by any American Stock Exchange member
firm selected from time to time by the Board of Directors of the Corporation for
that purpose.

               (ii)   "Determination Date" shall mean, with respect to any
dividend, distribution or other transaction or event in which the holders of
Common Stock have the right to receive any cash, securities or other property or
assets or in which the Common Stock (or other applicable security) is exchanged
for or converted into any combination of cash, securities or other property, the
date fixed for determination of stockholders entitled to receive such cash,
securities or other property or assets (whether such date is fixed by the Board
of Directors or by statute, contract or otherwise).

               (iii)  "Extraordinary Equity Payment" shall mean:

                      (1)  the declaration or payment on or after the Original
Issue Date by the Corporation, or any of its subsidiaries of any dividend or
distribution on any class or series of its stock other than:

                           (A)  any dividend or distribution from one subsidiary
of the Corporation to a wholly-owned subsidiary of the Corporation or from a
subsidiary of the Corporation to the Corporation; provided that all of such
dividend paid or distribution made, net of applicable withholding taxes, is
received by the Corporation, or such recipient subsidiary;

                           (B)  any regularly scheduled (whether or not overdue)
periodic cash dividend on the $21.25 Preferred Stock and Series B 

                                     -25-
<PAGE>
 
Cumulative Convertible Preferred Stock in accordance with the terms thereof as
in effect on the Original Issue Date;

                           (C)  any cash dividends on the Common Stock or other
capital stock after September 1, 2001 that do not exceed in aggregate more than
twenty-five percent (25%) of the Corporation's consolidated net income available
for distribution to common shareholders (after preferred dividends); provided,
                                                                     -------- 
however, that the Corporation shall have elected, for the preceding four fiscal
- -------                                                                        
quarters, to pay cash dividends on the Series B Cumulative Convertible Preferred
Stock and shall have paid in full such dividends in cash when due;

                      (2)  any repurchases, redemptions, retirements or other
acquisitions directly or indirectly by the Corporation or any of its
subsidiaries on or after the Original Issue Date of any stock of the Corporation
or any of its subsidiaries (other than a wholly-owned subsidiary) (other than
redemptions or repurchases of the Series B Cumulative Convertible Preferred
Stock in accordance with Sections 6 and 7).

               (iv)   "Fundamental Change" shall mean the occurrence of any
transaction or event in connection with a plan or agreement to which, in either
case, the Corporation is a party pursuant to which all or substantially all of
the shares of Common Stock shall be exchanged for, converted into, acquired for
or constitute solely the right to receive cash, securities, property or other
assets (whether by means of an exchange offer, liquidation, tender offer,
consolidation, merger, combination, reclassification, recapitalization or
otherwise); provided, however, in the case of a plan involving more than one
            --------  -------                                               
such transaction or event, for purposes of adjustment of the conversion price,
such Fundamental Change shall be deemed to have occurred when substantially all
of the shares of Common Stock of the Corporation shall be exchanged for,
converted into or acquired for or constitute solely the right to receive cash,
securities, property or other assets, but the adjustment shall be based upon the
consideration which the holders of Common Stock received in such transaction or
event as a result of which more than 50% of the shares of Common Stock of the
Corporation shall have been exchanged for, converted into, or acquired for or
constitute solely the right to receive cash, securities, property or other
assets; provided, further, that such term does not include (i) any such
transaction or event in which the Corporation and/or any of its subsidiaries are
the issuers of all the cash, securities, property or other assets exchanged,
acquired or otherwise issued in such transaction or event, or (ii) any such
transaction or event in which the holders of Common Stock receive securities of
an issuer other than the Corporation if, immediately following such 

                                     -26-
<PAGE>
 
transaction or event, such holders hold a majority of the securities having the
power to vote normally in the election of directors of such other issuer
outstanding immediately following such transaction or other event.

               (v)    "Section 8(c)(iv) Distribution" shall mean evidences of
the Corporation's indebtedness, shares of any class of stock, or assets,
including securities, but excluding any rights or warrants referred to in
subparagraph (ii) of Section 8(c), excluding any dividend or distribution paid
in cash, and excluding any dividend or distribution referred to in subparagraph
(i) of Section 8(c).

               (vi)   "Trading Day" shall mean a day on which the national
securities exchange or the NASDAQ National Market System used to determine the
Closing Price is open for the transaction of business or the reporting of
trades.

          (i)  Dividend or Interest Reinvestment Plans.  Notwithstanding the
               ---------------------------------------                      
foregoing provisions, the issuance of any shares of Common Stock pursuant to any
plan providing for the reinvestment of dividends or interest payable on
securities of the Corporation and the investment of additional optional amounts
in shares of Common Stock under any such plan, and the issuance of any shares of
Common Stock or options or rights to purchase such shares pursuant to any
employee benefit plan or program of the Corporation or pursuant to any option,
warrant, right or exercisable, exchangeable or convertible security issued or
outstanding on the Original Issue Date (except as expressly provided in Section
8(c)(i) or 8(c)(ii) with respect to certain events under the Rights Agreement),
and any issuance of Rights (defined below) or other rights referred to in
Section 8(c)(x), shall not be deemed to constitute an issuance of Common Stock,
options, warrants, rights, or exercisable, exchangeable or convertible
securities by the Corporation or any of its subsidiaries to which any of the
adjustment provisions described above in this Section 8 applies.  There shall
also be no adjustment of the conversion price in case of the issuance of any
stock (or options, warrants, rights, or securities convertible into or
exchangeable or exercisable for stock) of the Corporation except as specifically
described in this Section 8.  If any action would require adjustment of the
conversion price pursuant to more than one of the provisions described above,
only one adjustment shall be made and such adjustment shall be the amount of
adjustment which has the highest absolute value to the holders of Series B
Cumulative Convertible Preferred Stock.

          (j)  Preferred Share Purchase Rights.  So long as Preferred Share
               -------------------------------                             
Purchase Rights, of the kind authorized and declared on September 23, 1988 and
distributed by the Corporation in September 1988 as the same have been 

                                     -27-
<PAGE>
 
and may hereafter be amended ("Rights"), are attached to the outstanding shares
of Common Stock of the Corporation, each share of Common Stock issued upon
conversion of the shares of Series B Cumulative Convertible Preferred Stock
prior to the earliest of any Distribution Date (as defined in the Rights
Agreement), the date of redemption of the Rights or the date of expiration of
the Rights shall be issued with Rights in an amount equal to the amount of
Rights then attached to each such outstanding share of Common Stock.

          (k)  Certain Additional Rights.  In case the Corporation shall, by
               -------------------------                                    
dividend or otherwise, authorize, declare or make a distribution on its Common
Stock referred to in Section 8(c)(iv) or Section 8(c)(v), the holder of each
share of Series B Cumulative Convertible Preferred Stock, upon the conversion
thereof subsequent to the close of business on the date fixed for the
determination of stockholders entitled to receive such distribution and prior to
the effectiveness of the conversion price adjustment in respect of such
distribution pursuant to Section 8(c)(iv) or Section 8(c)(v), shall be entitled
to receive for each share of Common Stock into which such share of Series B
Cumulative Convertible Preferred Stock is converted, the portion of the
evidences of indebtedness, shares of stock, cash and assets so distributed
applicable to one share of Common Stock; provided, however, that, at the
                                         --------  -------              
election of the Corporation (whose election shall be evidenced by a vote of the
Board of Directors) with respect to all holders so converting, the Corporation
may, in lieu of distributing to such holder any portion of such distribution not
consisting of cash or securities of the Corporation, pay such holder an amount
in cash equal to the fair market value thereof (as determined by the Board of
Directors, whose determination shall be conclusive and described in a vote of
the Board of Directors).  If any conversion of a share of Series B Cumulative
Convertible Preferred Stock described in the immediately preceding sentence
occurs prior to the payment date for a distribution to holders of Common Stock
which the holder of the share of Series B Cumulative Convertible Preferred Stock
so converted is entitled to receive in accordance with the immediately preceding
sentence, the Corporation may elect (such election to be evidenced by a
resolution of the Board of Directors) to distribute to such holder a due bill
for the evidences of indebtedness, shares of stock, cash or assets to which such
holder is so entitled; provided that such due bill (i) meets any applicable
requirements of the principal national securities exchange or other market on
which the Common Stock is then traded and (ii) requires payment or delivery of
such evidences of indebtedness, shares of stock, cash or assets no later than
the date of payment or delivery thereof to holders of Common Stock receiving
such distribution. The rights provided in this Section 8(k) with respect to
distribution referred to in Section 8(c)(iv) or 

                                     -28-
<PAGE>
 
Section 8(c)(v) shall be in lieu of, and not in addition to, the rights accorded
to holders of Series B Cumulative Convertible Preferred Stock in those Sections.

          (l)  Other.  Notwithstanding any other provision in this Section 8 to
               -----                                                           
the contrary, if the Corporation shall, by dividend or otherwise, authorize,
declare or make a distribution on its Common Stock referred to in Section
8(c)(iv) and such distribution shall include shares of stock of one or more
corporations that immediately prior to such distribution was or would have been
a subsidiary (a "Spin-Off"), the holder of each share of Series B Cumulative
Convertible Preferred Stock shall be entitled to receive its pro rata share of
the securities distributed in the Spin-Off as if such holder had been the holder
of record of the number of shares of Common Stock into which the Series B
Cumulative Convertible Preferred Stock would be convertible (but for any
restrictions on convertibility contained in this Certificate of Vote) as of the
record date for such distribution.  The rights provided in this Section 8(l)
with respect to Spin-Offs shall be in lieu of, and not in addition to, the
rights accorded to holders of Series B Cumulative Convertible Preferred Stock
with respect to Spin-Offs in Section 8(c)(iv).

     9.   Voting Rights.
          ------------- 

          (a)  General.  The holders of shares of Series B Cumulative 
               -------   
Convertible Preferred Stock shall each initially have Twenty and Sixty-Five
Thousand Six Hundred and Forty-Eight Hundred-Thousandths (20.65648) votes for
each share held, which such shares shall be voted as a class with the holders of
the Common Stock on all matters on which the Common Stock may vote, except as
set forth below. Upon the occurrence of any event that causes an adjustment to
the conversion price pursuant to Section 8(c), the number of votes possessed by
each share of Series B Cumulative Convertible Stock shall be adjusted such that
the number of votes possessed by each such share immediately after the event
giving rise to the adjustment under Section 8(c) shall be equal to (x) the
number of votes possessed by such share immediately preceding such event,
multiplied by (y) the conversion price immediately preceding such event, divided
by (z) the conversion price immediately after such event. Any shares of Series B
Cumulative Convertible Preferred Stock held by the Corporation or any entity
controlled by the Corporation shall not have voting rights hereunder and shall
not be counted in determining the presence of a quorum.

                                     -29-
<PAGE>
 
          (b)  Special Default Voting Rights.
               ----------------------------- 

               (i)    Whenever a Special Default exists, (1) the number of
members of the Board of Directors shall be increased by such number as is
necessary to allow the election of the directors specified in clause (2), and
(2) the holders of the Series B Cumulative Convertible Preferred Stock, voting
separately as a class, shall have the right to elect an additional number of
directors to the Board of Directors such that Designated Directors selected by
the holders of the Series B Cumulative Convertible Preferred Stock, plus the
directors elected by such holders voting as a class under this clause,
constitute a majority of Board. Notwithstanding the foregoing sentence, the
holders of the Series B Cumulative Convertible Preferred Stock (voting
separately as a class) will not have the right to vote for additional directors
pursuant to this Section 9(b) where (x) such holders have exercised their right
to elect additional directors pursuant to Section 7(e)(iii), and (y) such
additional directors continue to serve as such. The right of the holders of the
Series B Cumulative Convertible Preferred Stock to vote for such additional
directors shall terminate at the earlier to occur of (A) when such Special
Default no longer exists or (ii) two years after the election of directors
pursuant to clause (2) of the first sentence of this Section. The term of office
of all directors so elected shall terminate immediately upon the termination of
the right of the holders of the Series B Cumulative Convertible Preferred Stock
to vote for such additional directors, and the number of directors of the Board
of Directors shall immediately thereafter be reduced.

               (ii)   The foregoing right of the holders of the Series B
Cumulative Convertible Preferred Stock with respect to the election of
additional directors may be exercised at each annual meeting of stockholders or
at any special meeting of stockholders held for such purpose.  If the right to
elect directors shall have accrued to the holders of the Series B Cumulative
Convertible Preferred Stock more than thirty (30) days preceding the date
established for the next annual meeting of stockholders, the President of the
Corporation shall, within five (5) days after the delivery to the Corporation at
its principal office of a written request for a special meeting signed by the
holders of at least 10% of all outstanding shares of the Series B Cumulative
Convertible Preferred Stock, call a special meeting of the holders of the Series
B Cumulative Convertible Preferred Stock to be held as promptly as practicable
after the delivery of such request for the purpose of electing such additional
directors.

               (iii)  The holders of the Series B Cumulative Convertible
Preferred Stock referred to above voting as a class shall have the right to
remove

                                     -30-
<PAGE>
 
with or without cause at any time and replace any directors such holders shall
have elected pursuant to this Section 9(c) and the holders of each other class
of stock of the Corporation shall not have the right to remove any such
directors.

          (c)  Class Voting Rights.  So long as any shares of the Series B
               -------------------                                        
Cumulative Convertible Preferred Stock are outstanding, the Corporation shall
not, directly or indirectly, without the affirmative vote or consent of the
holders of at least 66 2/3% (unless a higher percentage shall then be required
by applicable law or the Corporation's Articles) of all outstanding shares of
the Series B Cumulative Convertible Preferred Stock voting separately as a
class:  (i) amend, alter or repeal any provision of the Articles, Certificate of
Vote, or the bylaws of the Corporation, if such amendment, alteration or repeal
would alter the contract rights, as expressly set forth herein, of the Series B
Cumulative Convertible Preferred Stock or otherwise to adversely affect the
rights of the holders thereof or the holders of the Common Stock, (ii) create,
authorize or issue, or amend the terms of in a manner adversely affect the
rights of the holders the Series B Cumulative Convertible Preferred Stock, or
reclassify shares of any authorized stock of the Corporation into, or increase
the authorized amount of, any Senior Dividend Stock, Senior Liquidation Stock,
Parity Dividend Stock, or Parity Liquidation Stock or any security convertible
into such senior or Parity Stock, or (iii) approve a Fundamental Change.

     10.  Outstanding Shares.  For purposes of this Certificate of Vote, all
          ------------------                                                
shares of Series B Cumulative Convertible Preferred Stock issued by the
Corporation shall be deemed outstanding except (i) from the date fixed for
redemption pursuant to Section 6 hereof, all shares of Series B Cumulative
Convertible Preferred Stock that have been so called for redemption under
Section 6, to the extent provided thereunder; (ii) from the date of surrender of
certificates representing shares of Series B Cumulative Convertible Preferred
Stock, all shares of Series B Cumulative Convertible Preferred Stock converted
into Common Stock or repurchased pursuant to Section 7 hereof; and (iii) from
the date of registration of transfer, all shares of Series B Cumulative
Convertible Preferred Stock held of record by the Corporation or any majority-
owned subsidiary of the Corporation.

                                     -31-
<PAGE>
 
     11.  Transfer Restrictions.
          --------------------- 

          (a)  Legends on Series B Cumulative Convertible Preferred Stock and
               --------------------------------------------------------------
Common Stock. The certificates representing shares of Series B Cumulative
- ------------                                                             
Convertible Preferred Stock shall, unless otherwise agreed by the Corporation
and the holders of any such certificates, bear a legend substantially to the
following effect:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE AND ANY SECURITIES ISSUABLE
     UPON CONVERSION OR EXCHANGE HEREOF MAY NOT BE OFFERED OR SOLD EXCEPT
     PURSUANT TO (i) AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
     ACT OF 1933, OR (ii) AN APPLICABLE EXEMPTION FROM REGISTRATION THEREUNDER.
     ANY SALE PURSUANT TO CLAUSE (ii) OF THE PRECEDING SENTENCE MUST BE
     ACCOMPANIED BY AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO PERINI
     CORPORATION TO THE EFFECT THAT SUCH EXEMPTION FROM REGISTRATION IS
     AVAILABLE IN CONNECTION WITH SUCH SALE.  IN ADDITION, THE VOTING, SALE,
     ASSIGNMENT, TRANSFER, PLEDGE OR HYPOTHECATION OF THE SHARES REPRESENTED BY
     THIS CERTIFICATE IS FURTHER SUBJECT TO RESTRIC  TIONS WHICH ARE CONTAINED
     IN THE RESTATED ARTICLES OF ORGANIZATION OF PERINI CORPORATION, IN THE
     CERTIFICATE OF VOTE GOVERNING THESE SHARES AND IN A STOCK PURCHASE
     AGREEMENT DATED AS OF JULY 24, 1996, AS AMENDED, A COPY OF EACH OF WHICH IS
     ON FILE WITH PERINI CORPORATION AND WILL BE FURNISHED BY THE CORPORATION TO
     THE STOCKHOLDER ON REQUEST AND WITHOUT CHARGE."

          (b)  Transfer Agent Requirements.  The transfer agent (which may be 
               ---------------------------   
the Corporation) for the Series B Cumulative Convertible Preferred Stock shall
not be required to accept for registration of transfer any shares of Series B
Cumulative Convertible Preferred Stock bearing the legend contained in paragraph
(a) above, except upon presentation of evidence satisfactory to transfer agent
that the restrictions on transfer of shares of the Series B Cumulative
Convertible Preferred Stock referred to in the legend in paragraph (a) have been

                                     -32-
<PAGE>
 
complied with, all in accordance with such reasonable regulations as the
Corporation may from time to time agree with the transfer agent for shares of
the Series B Cumulative Convertible Preferred Stock.

     12.  Status of Acquired Shares.  Shares of Series B Cumulative Convertible
          -------------------------                                            
Preferred Stock redeemed or repurchased by the Corporation, received upon
conversion pursuant to Section 8 or otherwise acquired by the Corporation will
be restored to the status of authorized but unissued shares of Preferred Stock,
without designation as to class, and may thereafter be issued, but not as shares
of Series B Cumulative Convertible Preferred Stock.

     13.  Special Covenants.
          ----------------- 

          (a)  Nomination of Directors.  Effective as of the Original Issue 
               -----------------------   
Date, the Corporation shall elect to the board of directors three directors
designated by the holders of such stock (such directors, together with their
replacements as provided below, the "Designated Directors"), one of whom shall
be a Class I director, one of whom shall be a Class II director, and one of whom
shall be a Class III director. The holders of a majority of the Series B
Cumulative Convertible Preferred Stock shall designate the classes of such
initial Designated Directors.

               (i)    In the event that any Designated Director shall resign, be
unable to serve, or be removed (a "Replaced Designated Director"), the holders
of a majority of the Series B Cumulative Convertible Preferred Stock shall have
the right to designate a replacement to serve as Designated Director until the
next meeting of shareholders at which directors of the same class as the
Replaced Designated Director are elected. Any Designated Director may be removed
from the Board, with or without cause, by the holders of a majority of the
Series B Cumulative Convertible Preferred Stock.

               (ii)   Except as provided below, at any time when the term of a
Designated Director shall have ended and there shall be a meeting of
shareholders of the Corporation to elect directors, the Corporation shall
nominate for election to the board of directors, as a successor to any
Designated Director serving pursuant to Section 13(a) or clause (i) of such
provision, such person as is designated to be a Designated Director by the
holders of a majority of the Series B Cumulative Convertible Preferred Stock.

               (iii)  In the event that the holders of the Series B Cumulative
Convertible Preferred Stock dispose of such stock or Conversion 

                                     -33-
<PAGE>
 
Shares (defined below) representing more than sixty-six and two-thirds percent
(66-2/3%) and less than or equal to eighty percent (80%) of the voting power of
the Series B Cumulative Convertible Preferred Stock issued on the Original Issue
Date (plus any payment-in-kind dividends paid thereon), the number of Designated
Directors shall be reduced to two. If there are then more than two Designated
Directors serving on the board, the holders of a majority of the Series B
Cumulative Convertible Preferred Stock shall remove one such Designated Director
and the holders of such stock shall not have any right, pursuant to clause (ii)
or otherwise, to cause the Corporation to nominate a designated successor to
such removed director.

               (iv)   In the event that the holders of the Series B Cumulative
Convertible Preferred Stock dispose of such stock or Conversion Shares
representing more than eighty percent (80%) and less than or equal ninety
percent (90%) of the voting power of the Series B Cumulative Convertible
Preferred Stock issued on the Original Issue Date (plus any payment-in-kind
dividends paid thereon), the number of Designated Directors shall be reduced to
one.  If there is then more than one Designated Director serving on the board,
the holders of a majority of the Series B Cumulative Convertible Preferred Stock
shall remove all but one such Designated Director and the holders of such stock
shall not have any right, pursuant to clause (ii) or otherwise, to cause the
Corporation to nominate a designated successor to such removed director(s).

               (v)    In the event that the holders of the Series B Cumulative
Convertible Preferred Stock dispose of such stock or Conversion Shares
representing more than ninety percent (90%) of the voting power of the Series B
Cumulative Convertible Preferred Stock issued on the Original Issue Date (plus
any payment-in-kind dividends paid thereon), there shall be no Designated
Directors and any Designated Directors then serving on the board shall be
removed, and their terms in office shall immediately expire, without any further
action of the holders of such stock.

               (vi)   The right to nominate directors pursuant to this provision
is in addition to, and not in limitation of, any other rights and powers of the
Series B Cumulative Convertible Preferred Stock.  Directors nominated by the
holders of the Series B Cumulative Convertible Preferred Stock in their capacity
as holders of capital stock of the Corporation and not pursuant to clause (i),
(ii), or (iii) above are not Designated Directors for purposes of this
Certificate of Vote.

               (vii)  The vote of the holders of Series B Cumulative Convertible
Preferred Stock referred to in this Section may be exercised at a 

                                     -34-
<PAGE>
 
meeting of such holders or by written consent of holders with the requisite
percentage of the voting power outstanding.

               (viii)  Upon the reasonable request of the Corporation, the
holders of the Series B Cumulative Convertible Preferred Stock shall certify in
writing to the Corporation their holding of Conversion Shares.

               (ix)    For purposes of this Section:

                       (1)  "voting power" shall mean the number of votes each
such share possesses in the election of directors; and

                       (2)  "Conversion Shares" shall mean the shares of Common
Stock which are both (A) issuable or issued upon conversion of the Series B
Cumulative Convertible Preferred Stock pursuant to the terms of this Certificate
of Vote of Directors, and (B) held by a person who either (x) acquired the
shares of the Series B Cumulative Convertible Preferred Stock from which the
shares referred to in clause (A) of this definition were converted and has held
such Common Stock continuously thereafter, or (y) acquired the shares referred
to in clause (A) of this definition from a person referred to in clause (B)(x)
of this definition through a distribution to the partners by, or dissolution of,
a partnership.

          (b)  Appointment to Executive Committee.  At any time at which the
               ----------------------------------                           
holders of the Series B Cumulative Convertible Preferred Stock shall have the
right to nominate directors for election to the board pursuant to Section 13(a)
hereof, such holders shall also have the right to designate a like number of
persons from among the members of the board of directors to be members of the
Executive Committee of the board (the "Designated Executive Committee Members").
In the event that any Designated Executive Committee Member shall resign, be
unable to serve, or be removed, the holders of a majority of the Series B
Cumulative Convertible Preferred Stock shall have the right to designate a
replacement Designated Executive Committee Member.  Any Designated Executive
Committee Member may be removed from the Executive Committee, with or without
cause, by the holders of a majority of the Series B Cumulative Convertible
Preferred Stock.

          (c)  Approval of Certain Actions.  Neither the Corporation nor the
               ---------------------------                                  
Board shall take any of the following actions without the approval of a majority
of the members of the Executive Committee of the Board: (A)  any borrowing or
guarantee by the Corporation exceeding $15 million, (B) except for 

                                     -35-
<PAGE>
 
issuance of stock or stock options pursuant to (x) the Corporation's incentive
compensation plans and programs, (y) any warrants outstanding on the Original
Issue Date, or (z) the Rights, any issuance of stock (whether common or
preferred, whether voting or non-voting, whether junior, pari passu, or senior
to the Series B Cumulative Convertible Preferred Stock) other than Common Stock
in an aggre gate amount not exceeding five percent (5%) of the Common Stock
issued and outstanding on the Original Issue Date, (C) any strategic alliance
(other than a construction joint venture) involving a capital commitment by the
Corporation exceeding $5 million, (D) any asset sale by the Corporation or lease
by it as lessor exceeding $5 million (other than equipment dispositions in the
normal course of business); (E) any redemption or amendment of the Rights or the
preferred stock of the Corporation issuable upon the exercise of such Rights, or
any amendment of the Rights Agreement; and (F) any termination of (other than a
termination upon expiration) or amendment to the management agreement between
the Corporation and Tutor-Saliba Corporation; provided, however, that for
                                              --------  -------          
purposes of this Section 13(c), approval of the Executive Committee shall not be
required for any decision by the Board of Directors to redeem the Series B
Cumulative Convertible Preferred Stock pursuant to Section 6(a).
Notwithstanding the foregoing sentence, the board of directors of the
Corporation may take any of the actions specified in the preceding sentence if,
after having consulted with and considered the advice of outside counsel, it has
reasonably determined in good faith that the failure of the board to take such
action would be likely to cause the members of such board to breach their
fiduciary duties under applicable law.

     14.  Severability of Provisions.  Whenever possible, each provision hereof
          --------------------------                                           
shall be interpreted in a manner as to be effective and valid under applicable
law, but if any provision hereof is held to be prohibited by or invalid under
applicable law, such provision shall be ineffective only to the extent of such
prohibition or invalidity, without invalidating or otherwise adversely affecting
the remaining provisions hereof.  If a court of competent jurisdiction should
determine that a provision hereof would be valid or enforceable if a period of
time were extended or shortened or a particular percentage were increased or

                                     -36-
<PAGE>
 
decreased, then such court may make such change as shall be necessary to render
the provision in question effective and valid under applicable law.

                                     -37-
<PAGE>
 
                         REGISTRATION RIGHTS AGREEMENT
                         -----------------------------


          REGISTRATION RIGHTS AGREEMENT dated as of _____________ ___, 1996
between PERINI CORPORATION, a Massachusetts corporation (together with its
successors, the "Company"), PB CAPITAL PARTNERS, L.P. ("PB"), UNION LABOR LIFE
                 -------                                --                    
INSURANCE COMPANY SEPARATE ACCOUNT P ("Account P" and, together with PB, the
                                       ---------                            
"Initial Stockholders").
- ---------------------   

          WHEREAS, as required by the terms and conditions of the Stock Purchase
Agreement dated as of July 24, 1996, as amended (the "Stock Agreement"), among
                                                      ---------------         
the Company, PB, and Richard C. Blum & Associates, L.P. ("RCBA"), the Company
                                                          ----               
shall issue to PB on the Closing (as defined in the Stock Agreement), the Series
B Preferred Stock (as defined herein) which such stock is convertible into
common stock of the Company, par value $1.00 per share;

          WHEREAS, PB -- with the Company's consent -- has assigned its rights
and obligations under the Stock Agreement to acquire a portion of the Series B
Preferred Stock to Account P, and Account P has accepted such assignment;

          WHEREAS, the Company has agreed with the Initial Stockholders, for
their benefit and for the benefit of the other holders of the Series B Preferred
Stock and holders of Conversion Shares (as defined in the Stock Agreement) to
provide certain rights as set forth herein;

          NOW THEREFORE the parties hereto agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

          SECTION 1.1.  Definitions.  Unless otherwise defined herein, the
                        -----------                                       
following terms used in this Agreement shall have the meanings specified below.

          "Account P" has the meaning set forth in the introductory paragraph
           ---------                                                         
hereof.

          "Affiliate" means, with respect to any Person, any of (i) a director
           ---------                                                          
or executive officer of such Person, (ii) a spouse, parent, sibling or
descendant of such Person (or a spouse, parent, sibling or descendant of any
director or executive officer of such Person) and (iii) any other Person that,
directly or indirectly, controls, or is controlled by or is under common control
with such Person.  For the purpose of this definition, "control" (including the
terms "controlling", "controlled by" and "under common control with"), as used
with respect to any Person, means the possession, 
<PAGE>
 
directly or indirectly, of the power to direct or cause the direction of the
management or policies of such Person, whether through the ownership of voting
securities or by contract or agency or otherwise.

          "Business Day" means a day except a Saturday, Sunday or other day on
           ------------                                                       
which commercial banks in New York City are authorized by law to close.

          "Common Stock" means the common stock, par value $1.00 per share, of
           ------------                                                       
the Company.

          "Company" has the meaning set forth in the introductory paragraph
           -------                                                         
hereof.

          "Conversion Shares" means (i) any shares of Common Stock or other
           -----------------                                               
securities issued or issuable upon the conversion of any shares of Series B
Preferred Stock; (ii) the shares of Common Stock or other securities issued to
PB as a participation fee in connection with PB's purchase of a 100%
participation interest in a $10,000,000 extension of credit to the Company
pursuant to the Bridge Credit Agreement dated as of February 26, 1996 among
Perini Corporation ("Perini"), the Bridge Banks listed in the Bridge Credit
Agreement, and Morgan Guaranty Trust Company of New York, as Agent, as amended
through November __, 1996; or (iii) any securities issued or issuable with
respect to any of such shares or other securities referred to in clause (i) or
(ii) upon the conversion thereof into other securities or by way of stock
dividend or stock split or in connection with a combination of shares,
recapitalization, merger, consolidation or other reorganization or otherwise;
                                                                             
provided that any of such securities shall cease to be Conversion Shares when
- --------                                                                     
such securities shall have (x) been disposed of pursuant to a Public Sale or (y)
ceased to be outstanding.

          "Deferral Period" has the meaning set forth in Section 2.1(d).
           ---------------                                              

          "Effectiveness Period" means the period commencing on the date hereof
           --------------------                                                
and ending on the date that all Conversion Shares shall have ceased to be
Registrable Securities.

          "Exchange Act" means the Securities Exchange Act of 1934, or any
           ------------                                                   
successor Federal statute, and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.  Reference to a
particular section of the Securities Exchange Act of 1934 shall include a
reference to the comparable section, if any, of any such successor Federal
statute.

          "Filing Date" has the meaning set forth in Section 2.1(a).
           -----------                                              

          "Initial Stockholders" has the meaning set forth in the introductory
           --------------------                                               
paragraph hereof.

                                       2
<PAGE>
 
          "Initial Shelf Registration" has the meaning set forth in Section
           --------------------------                                      
2.1(a).

          "Initiating Holders" has the meaning set forth in Section 2.1(a)
           ------------------                                             
hereof.

          "Managing Underwriters" means the investment banking firm or firms
           ---------------------                                            
that shall manage or co-manage an Underwritten Offering.

          "Notice Holder" means a holder of Registrable Securities who has given
           -------------                                                        
notice of intention to distribute such holder's Registrable Securities in
accordance with Section 2.1(d).

          "PB" has the meaning set forth in the introductory paragraph hereof.
           --                                                                 

          "Person" means an individual, a corporation, a partnership, a limited
           ------                                                              
liability partnership, a limited liability company, an association, a trust or
any other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

          "Prospectus" means the prospectus included in any Registration
           ----------                                                   
Statement (including, without limitation, a prospectus that discloses
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A promulgated under the
Securities Act), as amended or supplemented by any amendment or prospectus
supplement, including post-effective amendments, and all material incorporated
by reference or deemed to be incorporated by reference in such Prospectus.

          "Public Sale" means any sale of Common Stock to the public pursuant to
           -----------                                                          
an offering registered under the Securities Act or to the public through a
broker, dealer or market maker pursuant to the provisions of Rule 144 (or any
successor provision then in effect) adopted under the Securities Act.

          "Registrable Securities" means any Conversion Shares until the date
           ----------------------                                            
(if any) when (i) such Conversion Shares shall have been transferred or
exchanged and new certificates for them not bearing a legend restricting further
transfer shall have been delivered by the Company or (ii) if requested to do so,
the Company would be required to deliver certificates for such Conversion Shares
not bearing a legend restricting further transfer, and, in each case, subsequent
disposition of such Conversion Shares shall not require registration or
qualification under the Securities Act or any similar state law then in force.

          "Registration Statement" means any registration statement of the
           ----------------------                                         
Company which covers any of the Registrable Securities pursuant to the
provisions of this Agreement, including the Prospectus, amendments and
supplements to such registration statement, including post-effective amendments,
all exhibits, and all material 

                                       3
<PAGE>
 
incorporated by reference or deemed to be incorporated by reference in such
registration statement.

          "Restricted Securities" means the Series B Preferred Stock, the
           ---------------------                                         
Conversion Shares and any securities obtained upon exchange for or upon
conversion or transfer of or as a distribution on Series B Preferred Stock, the
Conversion Shares or any such securities; provided that particular securities
                                          --------                           
shall cease to be Restricted Securities when such securities shall have (x) been
disposed of pursuant to a Public Sale, (y) been otherwise transferred or
exchanged and new certificates for them not bearing a legend restricting further
transfer shall have been delivered by the Company and subsequent disposition of
them shall not require registration or qualification of them under the
Securities Act or any similar state law then in force or (z) ceased to be
outstanding.

          "Rule 144" means Rule 144 under the Securities Act, as such Rule may
           --------                                                           
be amended from time to time, or any similar rule or regulation hereafter
adopted by the SEC.

          "Rule 144A" means  Rule 144A under the Securities Act, as such Rule
           ---------                                                         
may be amended from time to time, or any similar rule or regulation hereafter
adopted by the SEC.

          "SEC" means the Securities and Exchange Commission or any other
           ---                                                           
Federal agency at the time administering the Securities Act.

          "Securities Act" means the Securities Act of 1933, or any similar
           --------------                                                  
Federal statute, and the rules and regulations of the Commission thereunder, all
as the same shall be in effect at the time.  Reference to a particular section
of the Securities Act of 1933 shall include a reference to the comparable
section, if any, of any such similar Federal statute.

          "Selling Period" has the meaning set forth in Section 2.1(d).
           --------------                                              

          "Series B Preferred Stock" means the Series B Cumulative Convertible
           ------------------------                                           
Preferred Stock originally issued to the Initial Stockholders in accordance with
the Stock Agreement, as such stock may be transferred or otherwise assigned, but
only to the extent not theretofore converted, redeemed or expired in accordance
with their respective terms.

          "Series B Securityholder" means at any time any Stockholder or any
           -----------------------                                          
holder of Conversion Shares.

          "Shelf Registration" has the meaning set forth in Section 2.1(a).
           ------------------                                              

          "Special Counsel" means any law firm retained from time to time by the
           ---------------                                                      
holders of a majority of the Registrable Securities to be sold pursuant to a
Registration 

                                       4
<PAGE>
 
Statement or during any Selling Period, as shall be specified by such holders to
the Company; provided that at no time there shall be more than one Special
             --------
Counsel the fees and expenses of which will be paid by the Company pursuant to
Section 2.4.

          "Stock Agreement" has the meaning set forth in the recitals.
           ---------------                                            

          "Subsequent Shelf Registration" has the meaning set forth in Section
           -----------------------------                                      
2.1(b).

          "Stockholder" means a holder of Series B Preferred Stock.
           -----------                                             

          "Underwritten Offering" means a registration in which Registrable
           ---------------------                                           
Securities are sold or to be sold to one or more underwriters for reoffering to
the public.


                                   ARTICLE II

                              REGISTRATION RIGHTS

          SECTION 2.1  Shelf Registration.
                       ------------------ 

          (a)   As soon as practicable but in any event not later than the date
(the "Filing Date") that is sixty (60) days after receipt by the Company of a
      -----------                                                            
written request by the holder or holders of a majority of all outstanding
Conversion Shares and Series B Preferred Stock (such majority determined, for
purposes of this Section 2.1, based on the aggregate number of Conversion Shares
then outstanding plus the number of Conversion Shares into which any outstanding
shares of Series B Preferred Stock are then convertible) (the "Initiating
                                                               ----------
Holders"), the Company shall prepare and file with the SEC a Registration
- -------                                                                  
Statement for an offering to be made on a delayed or continuous basis pursuant
to Rule 415 of the Securities Act (a "Shelf Registration") registering the
                                      ------------------                  
resale from time to time by the holders thereof of all of the Registrable
Securities upon and following conversion of the Series B Preferred Stock (the
                                                                             
"Initial Shelf Registration"). The Registration Statement for any Shelf
- ---------------------------                                            
Registration shall be on Form S-3 or another appropriate form permitting
registration of such Registrable Securities for resale by such holders in the
manner or manners designated by them (including, without limitation, one or more
Underwritten Offerings).  The Company shall use its reasonable efforts to cause
the Initial Shelf Registration to become effective under the Securities Act as
promptly as is practicable and to keep the Initial Shelf Registration
continuously effective under the Securities Act until the end of the
Effectiveness Period.

          (b) If the Initial Shelf Registration or any Subsequent Shelf
Registration (as defined below) ceases to be effective for any reason at any
time during the Effectiveness Period (other than because all Registrable
Securities shall have been sold or shall have ceased to be Registrable
Securities), the Company shall use all 

                                       5
<PAGE>
 
reasonable efforts to obtain the prompt withdrawal of any order suspending the
effectiveness thereof, and in any event shall within thirty days of such
cessation of effectiveness amend the Shelf Registration in a manner reasonably
expected to obtain the withdrawal of the order suspending the effectiveness
thereof, or file an additional Shelf Registration covering all of the
Registrable Securities (a "Subsequent Shelf Registration"). If a Subsequent
                           -----------------------------
Shelf Registration is filed, the Company shall use all reasonable efforts to
cause the Subsequent Shelf Registration to become effective as promptly as is
practicable after such filing and to keep such Registration Statement
continuously effective until the end of the Effectiveness Period.

          (c) The Company shall supplement and amend the Shelf Registration if
required by the rules, regulations or instructions applicable to the
registration form used by the Company for such Shelf Registration, if required
by the Securities Act, or if reasonably requested by any holder of the
Registrable Securities covered by such Registration Statement or by any Managing
Underwriter of such Registrable Securities.

          (d) Each Series B Securityholder agrees that if it wishes to sell any
Registrable Securities pursuant to a Shelf Registration and related Prospectus,
it will do so only in accordance with this Section 2.1(d).  Each holder of
Registrable Securities agrees to give written notice to the Company at least six
Business Days prior to any intended distribution of Registrable Securities under
the Shelf Registration, which notice shall specify the date on which such holder
intends to begin such distribution and any information with respect to such
holder and the intended distribution of Registrable Securities by such holder
required to amend or supplement the Registration Statement with respect to such
intended distribution of Registrable Securities by such holder; provided that no
                                                                --------        
holder may give such notice unless such notice, together with notices given by
other holders of Registrable Securities joining in such notice or giving similar
notices, covers at least 30,000 Conversion Shares.  As promptly as is
practicable after the date such notice is provided, and in any event within five
Business Days after such date, the Company shall either:

     (i) (A) prepare and file with the SEC a post-effective amendment to the
  Shelf Registration or a supplement to the related Prospectus or a supplement
  or amendment to any document incorporated therein by reference or any other
  required document, so that such Registration Statement will not contain any
  untrue statement of a material fact or omit to state a material fact required
  to be stated therein or necessary to make the statements therein not
  misleading, and so that, as thereafter delivered to purchasers of the
  Registrable Securities being sold thereunder, such Prospectus will not contain
  any untrue statement of a material fact or omit to state a material fact
  required to be stated therein or necessary to make the statements therein, in
  light of the circumstances under which they were made, not misleading; (B)
  provide each Notice Holder a copy of any documents filed pursuant to Section
  2.1(d)(i)(A); and (C) inform each Notice Holder that the Company has complied
  with its obligations in Section 2.1(d)(i)(A) and that the 

                                       6
<PAGE>
 
  Registration Statement and related Prospectus may be used for the purpose of
  selling all or any of such Registrable Securities (or that, if the Company has
  filed a post-effective amendment to the Shelf Registration which has not yet
  been declared effective, the Company will notify each Notice Holder to that
  effect, will use all reasonable efforts to secure the effectiveness of such
  post-effective amendment and will immediately so notify each Notice Holder
  when the amendment has become effective); each Notice Holder will sell all or
  any or such Registrable Securities pursuant to the Shelf Registration and
  related Prospectus only during the 45-day period commencing with the date on
  which the Company gives notice, pursuant to Section 2.1(d)(i)(C), that the
  Registration Statement and Prospectus may be used for such purpose (such 45-
  day period is referred to as a "Selling Period"); each Notice Holder agrees
                                  --------------
  that it will not sell any Restricted Securities pursuant to such Registration
  Statement or Prospectus after such Selling Period without giving a new notice
  of intention to sell pursuant to Section 2.1(d) hereof and receiving a further
  notice from the Company pursuant to Section 2.1(d)(i)(C) hereof; or

     (ii) if, in the judgment of the Company, it is advisable to suspend use of
  the Prospectus for a period of time due to pending material corporate
  developments or similar material events that have not yet been publicly
  disclosed and as to which the Company believes public disclosure will be
  prejudicial to the Company, the Company shall deliver a certificate in
  writing, signed by its Chief Executive Officer, Chief Financial Officer or
  General Counsel, to the Notice Holders, the Special Counsel and the Managing
  Underwriters, if any, to the effect of the foregoing and, upon receipt of such
  certificate, each such Notice Holder's Selling Period will not commence until
  such Notice Holder's receipt of copies of the supplemented or amended
  Prospectus provided for in Section 2.1(d)(i)(A) hereof, or until it is advised
  in writing by the Company that the Prospectus may be used, and has received
  copies of any additional or supplemental filings that are incorporated or
  deemed incorporated by reference in such Prospectus.  The Company will use all
  reasonable efforts to ensure that the use of the Prospectus may be resumed,
  and the Selling Period will commence, upon the earlier of (x) public
  disclosure of such pending material corporate development or similar material
  event or (y) a determination by the Company that, in the judgment of the
  Company, public disclosure of such material corporate development or similar
  material event would not be prejudicial to the Company.  Notwithstanding the
  foregoing, the Company shall not under any circumstances be entitled to
  exercise its right under this Section 2.1(d) to defer the commencement of a
  Selling Period more than one time in any three-month period or two times in
  any twelve-month period, and the period in which a Selling Period is suspended
  shall not exceed fifteen days unless the Company shall deliver to such Notice
  Holders a second certificate to the effect set forth above, which shall have
  the effect of extending the period during which such Selling Period is
  deferred by up to an additional fifteen days, or such shorter period of time
  as is specified in such second 

                                       7
<PAGE>
 
  certificate. In no event shall the Company be permitted to extend the period
  during which such Selling Period is deferred from and after the date a Notice
  Holder provides notice to the Company in accordance with this Section 2.1(d)
  of its intention to distribute Registrable Securities (a "Deferral Period")
                                                            ---------------
  beyond such 30-day period.

          SECTION 2.2.  Registration Procedures.  In connection with the
                        -----------------------                         
Company's registration obligations under Section 2.1 hereof, the Company shall
effect such registrations to permit the sale of the Registrable Securities in
accordance with the intended method or methods of disposition thereof, and
pursuant thereto the Company shall as expeditiously as possible:

          (a) Prepare and file with the SEC a Registration Statement or
Registration Statements on any appropriate form under the Securities Act
available for the sale of the Registrable Securities by the holders thereof in
accordance with the intended method or methods of distribution thereof, and use
its reasonable efforts to cause each such Registration Statement to become
effective and remain effective as provided herein; provided, that before filing
                                                   --------                    
any such Registration Statement or Prospectus or any amendments or supplements
thereto (other than documents that would be incorporated or deemed to be
incorporated therein by reference and that the Company is required by applicable
securities laws or stock exchange requirements to file) the Company shall
furnish to the Initial Stockholders, the Initiating Holders, the Special Counsel
and the Managing Underwriters of such offering, if any, copies of all such
documents proposed to be filed, which documents will be subject to the review of
the Initial Stockholders, the Initiating Holders, the Special Counsel and such
Managing Underwriters, and the Company shall not file any such Registration
Statement or amendment thereto or any Prospectus or any supplement thereto
(other than such documents which, upon filing, would be incorporated or deemed
to be incorporated by reference therein and that the Company is required by
applicable securities laws or stock exchange requirements to file) to which the
holders of a majority of the Registrable Securities covered by such Registration
Statement, the Initial Stockholders, the Initiating Holders or the Special
Counsel shall reasonably object in writing within two full Business Days.

          (b) Prepare and file with the SEC such amendments and post-effective
amendments to each Registration Statement as may be necessary to keep such
Registration Statement continuously effective for the applicable period
specified in Section 2.1; cause the related Prospectus to be supplemented by any
required Prospectus supplement, and as so supplemented to be filed pursuant to
Rule 424 (or any similar provisions then in force) under the Securities Act; and
comply with the provisions of the Securities Act with respect to the disposition
of all securities covered by such Registration Statement during the applicable
period in accordance with the intended methods of disposition by the sellers
thereof set forth in such Registration Statement as so amended or such
Prospectus as so supplemented.

                                       8
<PAGE>
 
          (c) Notify the selling Series B Securityholders, the Initial Stock
holders, the Initiating Holders, the Special Counsel and the Managing
Underwriters, if any, promptly, and (if requested by any such person) confirm
such notice in writing, (i) when a Prospectus, any Prospectus supplement, a
Registration Statement or a post-effective amendment to a Registration Statement
has been filed with the SEC, and, with respect to a Registration Statement or
any post-effective amendment, when the same has become effective, (ii) of any
request by the SEC or any other federal or state governmental authority for
amendments or supplements to a Registration Statement or related Prospectus or
for additional information, and of the contents of such request, (iii) of the
issuance by the SEC or any other federal or state governmental authority of any
stop order suspending the effectiveness of a Registration Statement or the
initiation or threatening of any proceedings for that purpose, (iv) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose, (v) of the existence of any fact or happening of
any event which makes any statement of a material fact in such Registration
Statement or related Prospectus or any document incorporated or deemed to be
incorporated therein by reference untrue or which would require the making of
any changes in the Registration Statement or Prospectus in order that, in the
case of the Registration Statement, it will not contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and that in the case
of the Prospectus, it will not contain any untrue statement of a material fact
or omit to state any material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein, in the light
of the circumstances under which they were made, not misleading, provided that
                                                                 --------     
the Company shall not be required to disclose such fact or event if such fact or
event has not been publicly disclosed, and (vi) of the Company's determination
that a post-effective amendment to a Registration Statement would be
appropriate.

          (d) Use all reasonable efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration Statement, or the lifting of any
suspension of the qualification (or exemption from qualification) of any of the
Registrable Securities for sale in any jurisdiction, at the earliest possible
moment.

          (e) If reasonably requested by an Initial Stockholder, the Initiating
Holders, the Special Counsel, the Managing Underwriters, if any, or the holders
of a majority of the Registrable Securities being sold, (i) promptly incorporate
in a Prospectus supplement or post-effective amendment to a Registration
Statement such information as the Initial Stockholders, the Initiating Holders,
the Special Counsel, the Managing Underwriters, if any, or such holders, in
connection with any offering of Registrable Securities, agree should be included
therein as required by applicable law, and (ii) make all required filings of
such Prospectus supplement or such post-effective amendment as promptly as is
practicable after the Company has received notification of the matters to be
incorporated in such Prospectus supplement or post-effective amendment;
provided, that 
- --------

                                       9
<PAGE>
 
the Company shall not be required to take any actions under this Section 2.2(e)
that are not, in the reasonable opinion of counsel for the Company, in
compliance with or required by applicable law.

          (f) Furnish to each selling Series B Securityholder, the Special
Counsel, the Initial Stockholders, and each Managing Underwriter, if any,
without charge, at least one conformed copy of the Registration Statement or
Statements and any amendment thereto, including financial statements but
excluding schedules, all documents incorporated or deemed to be incorporated
therein by reference and all exhibits (unless requested in writing by such
Series B Securityholder, Special Counsel, Initial Stockholders, or Managing
Underwriter).

          (g) Deliver to each selling holder of Registrable Securities, the
Special Counsel, the Initial Stockholders, and each Managing Underwriter, if
any, in connection with any offering of Registrable Securities, without charge,
as many copies of the Prospectus or Prospectuses relating to such Registrable
Securities (including each preliminary prospectus) and any amendment or
supplement thereto as such persons may reasonably request; and the Company
hereby consents to the use of such Prospectus or each amendment or supplement
thereto by each of the selling holders of Registrable Securities and the
underwriters, if any, in connection with any offering and sale of the
Registrable Securities covered by such Prospectus or any amendment or supplement
thereto.

          (h) Prior to any public offering of Registrable Securities, to
register or qualify or cooperate with the selling Series B Securityholders, the
Managing Underwriters, if any, and the Special Counsel in connection with the
registration or qualification (or exemption from such registration or
qualification) of such Registrable Securities for offer and sale under the
securities or Blue Sky laws of such jurisdictions within the United States as
any selling Series B Securityholder or Managing Underwriter reasonably requests
in writing to the Company; keep each such registration or qualification (or
exemption therefrom) effective during the period such Registration Statement is
required to be kept effective and do any and all other acts or things necessary
or advisable to enable the disposition in such jurisdictions of the Registrable
Securities covered by the applicable Registration Statement; provided, that the
                                                             --------          
Company will not be required to (i) qualify generally to do business in any
jurisdiction where it is not then so qualified or (ii) take any action that
would subject it to general service of process in suits or to taxation in any
such jurisdiction where it is not then so subject.

          (i) Cause the Registrable Securities covered by the applicable
Registration Statement to be registered with or approved by such other
governmental agencies or authorities within the United States, except as may be
required solely as a consequence of the nature of a selling holder of
Registrable Securities, in which case the Company will cooperate in all
reasonable respects with the filing of such Registration Statement and the
granting of such approvals, as may be necessary to enable the selling 

                                      10
<PAGE>
 
holder or holders thereof or the Managing Underwriters, if any, to consummate
the disposition of such Registrable Securities.

          (j) During any Selling Period (other than during a Deferral Period),
immediately upon the existence of any fact or the occurrence of any event as a
result of which a Registration Statement shall contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, or a Prospectus
shall contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading, promptly prepare and file a post-effective amendment to each
Registration Statement or a supplement to the related Prospectus or any document
incorporated therein by reference or file any other required document (such as a
Current Report on Form 8-K) that would be incorporated by reference into the
Registration Statement so that the Registration Statement shall not contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein not misleading,
and so that the Prospectus will not contain any untrue statement of a material
fact or omit to state any material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading, as
thereafter delivered to the purchasers of the Registrable Securities being sold
thereunder, and, in the case of a post-effective amendment to a Registration
Statement, use all reasonable efforts to cause it to become effective as
promptly as is practicable.

          (k) Enter into such agreements (including, in the event of an
Underwritten Offering, an underwriting agreement in form, scope and substance as
is customary in Underwritten Offerings) and take all such other actions in
connection therewith (including, in the event of an underwritten offering, those
reasonably requested by the Managing Underwriters, if any, or the holders of a
majority of the Registrable Securities being sold) in order to expedite or
facilitate the disposition of such Registrable Securities and in such
connection, whether or not an underwriting agreement is entered into, and if the
registration is an underwritten registration, (i) make such representations and
warranties, subject to the Company's ability to do so, to the holders of such
Registrable Securities and the underwriters with respect to the business of the
Company and its subsidiaries, the Registration Statement, Prospectus and
documents incorporated by reference or deemed incorporated by reference, if any,
in each case, in form, substance and scope as are customarily made by issuers to
underwriters in underwritten offerings and confirm the same if and when
requested; (ii) obtain opinions of counsel to the Company and updates thereof
(which counsel and opinions (in form, scope and substance) shall be reasonably
satisfactory to the Managing Underwriters, if any, Special Counsel and the
holders of a majority of the Registrable Securities being sold) addressed to
each of the underwriters covering the matters customarily covered in opinions
requested in underwritten offerings and such other matters as may be reasonably
requested by such Special Counsel and Managing Underwriters; (iii) obtain
"comfort" 

                                      11
<PAGE>
 
letters and updates thereof from the independent certified public accountants of
the Company (and, if necessary, any other certified public accountants of any
subsidiary of the Company or any business acquired or to be acquired by the
Company for which financial statements and financial data is, or is required to
be, included in the Registration Statement), addressed to each of the Managing
Underwriters, if any, such letters to be in customary form and covering matters
of the type customarily covered in "comfort" letters in connection with
Underwritten Offerings; and (iv) deliver such documents and certificates as may
be reasonably requested by the holders of a majority of the Registrable
Securities being sold, the Special Counsel and the Managing Underwriters, if
any, to evidence the continued validity of the representations and warranties of
the Company and its subsidiaries made pursuant to clause (i) above and to
evidence compliance with any customary conditions contained in the underwriting
agreement or other agreement entered into by the Company.

          (l) If requested in connection with a disposition of Registrable
Securities pursuant to a Registration Statement, make available for inspection
by a representative of the holders of Registrable Securities being sold, any
Managing Underwriter participating in any disposition of Registrable Securities,
if any, and any attorney or accountant retained by such selling holders or
underwriter, financial and other records, pertinent corporate documents and
properties of the Company and its subsidiaries, and cause the executive
officers, directors and employees of the Company and its subsidiaries to supply
all information reasonably requested by any such representative, Managing
Underwriter, attorney or accountant in connection with such disposition; subject
to reasonable written assurances by each such person that such information will
only be used in connection with matters relating to such Registration Statement.

          (m) Comply with all applicable rules and regulations of the SEC and
make generally available to its securityholders earning statements (which need
not be audited) satisfying the provisions of Section 11(a) of the Securities Act
and Rule 158 thereunder (or any similar rule promulgated under the Securities
Act) no later than 45 days after the end of any 12-month period (or 90 days
after the end of any 12-month period if such period is a fiscal year) (i)
commencing at the end of any fiscal quarter in which Registrable Securities are
sold to underwriters in a firm commitment or best efforts underwritten offering,
and (ii) if not sold to underwriters in such an offering, commencing on the
first day of the first fiscal quarter of the Company commencing after the
effective date of a Registration Statement, which statements shall cover said
12-month periods.

          (n) Cooperate with the selling Series B Securityholders to facilitate
the timely preparation and delivery of certificates representing Registrable
Securities to be sold and not bearing any restrictive legends; and enable such
Registrable Securities to be in such denominations and registered in such names
as the selling Series B Securityholders may request.

                                      12
<PAGE>
 
          (o) Use all reasonable efforts to provide a CUSIP number for the
Registrable Securities not later than the effective date of the registration.

          (p) Cause all Registrable Securities covered by the Registration
Statement to be listed on each securities exchange or quotation system on which
the Company's Common Stock is then listed no later than the date the
Registration Statement is declared effective and, in connection therewith, to
the extent applicable, to make such filings under the Exchange Act (e.g., the
filing of a Registration Statement on Form 8-A) and to have such filings
declared effective thereunder.

          (q) Cooperate and assist in any filings required to be made with the
National Association of Securities Dealers, Inc.

          (r) Provide and cause to be maintained a transfer agent and registrar
for all Registrable Securities covered by such registration statement from and
after a date not later than the effective date of such Registration Statement.

          SECTION 2.3.  Holder's Obligations.
                        -------------------- 

          (a) Each holder of Registrable Securities agrees, by becoming a
transferee of any Registrable Securities, that no holder of Registrable
Securities shall be entitled to sell any of such Registrable Securities pursuant
to a Registration Statement or to receive a Prospectus relating thereto, unless
such holder has furnished the Company with the notice required pursuant to
Section 2.1(d) hereof (including the information required to accompany such
notice) and, promptly after the Company's request, such other information
regarding such holder and the distribution of such Registrable Securities as the
Company may from time to time reasonably request.  The Company may exclude from
such registration the Registrable Securities of any holder who does not furnish
such information provided above for so long as such information is not so
furnished.  Each holder of Registrable Securities as to which any Registration
Statement is being effected agrees promptly to furnish to the Company all
information required to be disclosed in order to make the information previously
furnished to the Company by such holder not misleading.  Any sale of any
Registrable Securities by any holder shall constitute a representation and
warranty by such holder that the information relating to such holder and its
plan of distribution is as set forth in the Prospectus delivered by such holder
in connection with such disposition, that such Prospectus does not as of the
time of such sale contain any untrue statement of a material fact relating to
such holder or its plan of distribution and that such Prospectus does not as of
the time of such sale omit to state any material fact relating to such holder or
its plan of distribution necessary to make the statements in such Prospectus, in
light of the circumstances under which they were made, not misleading.

          (b)   The Company agrees (x) that if any holder of Registrable
Securities shall send a written notice to the Company of an intended
distribution of 

                                      13
<PAGE>
 
Registrable Securities under the Shelf Registration pursuant to Section 2.1(d),
the Company shall not to sell, make any short sale of, loan, grant any option
for the purchase of, effect any public sale or distribution of or otherwise
dispose of its equity securities or securities convertible into or exchangeable
or exercisable for any of such securities during the period from first day of
the applicable Selling Period until the date that is 90 days after the date when
such holder shall have made such distribution of Registrable Securities under
the Shelf Registration, as the holder or managing underwriter (in the case of an
Underwritten Offering) shall advise the Company (provided that if the holder or
                                                 --------
managing underwriter shall fail to advise the Company of any such date prior to
the end of the applicable Selling Period, such period shall end on the last day
of the applicable Selling Period), except (i) as part of such registration, (ii)
pursuant to registrations on Form S-4 or S-8 or any successor or similar forms
thereto or (iii) as otherwise permitted by the managing underwriter of such
offering (if any), and (y) to use all reasonable efforts to cause each holder of
its equity securities or any securities convertible into or exchangeable or
exercisable for any of such securities, in each case purchased from the Company
at any time after the date of this Agreement (other than in a public offering)
to agree not to sell, make any short sale of, loan, grant any option for the
purchase of, effect any public sale or distribution of or otherwise dispose of
such securities during such period except as part of such underwritten
registration; provided that no holder of Registrable Securities included in any
              --------
underwritten registration shall be required to make any representations or
warranties to the Company or the underwriters other than representations and
warranties regarding such holder and such holder's intended method of
distribution.

          SECTION 2.4.  Registration Expenses.  All fees and expenses incident
                        ---------------------                                 
to the Company's performance of or compliance with this Agreement shall be borne
by the Company whether or not any of the Registration Statements become
effective.  Such fees and expenses shall include, without limitation, (i) all
registration and filing fees (including, without limitation, fees and expenses
(x) with respect to filings required to be made with the National Association of
Securities Dealers, Inc. and (y) of compliance with federal securities or Blue
Sky laws (including, without limitation, fees and disbursements of Special
Counsel in connection with Blue Sky qualifications of the Registrable Securities
laws of such jurisdictions as the Managing Underwriters, if any, or holders of a
majority of the Registrable Securities being sold may designate), (ii) printing
expenses (including, without limitation, expenses of printing certificates for
Registrable Securities in a form eligible for deposit with The Depositary Trust
Company and of printing prospectuses if the printing of prospectuses is
requested by the Special Counsel or the holders of a majority of the Registrable
Securities included in any Registration Statement), (iii) messenger, telephone
and delivery expenses, (iv) reasonable fees and disbursements of counsel for the
Company and the Special Counsel in connection with the Registration, (v) fees
and disbursements of all independent certified public accountants referred to in
Section 2.2(k)(iii) hereof (including the expenses of any special audit and
"comfort" letters required by or incident to such performance) and (vi)
Securities Act liability insurance obtained by the Company in its sole
discretion.  In 

                                      14
<PAGE>
 
addition, the Company shall pay its internal expenses (including, without
limitation, all salaries and expenses of its officers and employees performing
legal or accounting duties), the expense of any annual audit, the fees and
expenses incurred in connection with the listing of the securities to be
registered on any securities exchange on which similar securities issued by the
Company are then listed and the fees and expenses of any person, including
special experts, retained by the Company. Notwithstanding the provisions of this
Section 2.4, each seller of Registrable Securities shall pay all registration
expenses to the extent the Company is prohibited by applicable Blue Sky laws
from paying for or on behalf of such seller of Registrable Securities.

          SECTION 2.5.  Indemnification.
                        --------------- 

          (a) The Company agrees to indemnify and hold harmless each holder of
Registrable Securities whose Registrable Securities are covered by any
registration statement, its directors and officers and each other Person, if
any, who controls such holder within the meaning of the Securities Act, against
any losses, claims, damages or liabilities, joint or several, to which any such
indemnified party may become subject under the Securities Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions or
proceedings, whether commenced or threatened, in respect thereof) arise out of
or are based upon any untrue statement or alleged untrue statement of any
material fact contained in any registration statement under which such
securities were registered under the Securities Act, any preliminary prospectus,
final prospectus or summary prospectus contained therein, or any amendment or
supplement thereto, or any omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, and the Company will reimburse each such indemnified
party for any legal or any other expenses reasonably incurred by them in
connection with investigating or defending any such loss, claim, liability,
action or proceeding; provided that the Company shall not be liable in any such
                      --------                                                 
case to the extent that any such loss, claim, damage, liability (or action or
proceeding in respect thereof) or expense arises out of or is based upon an
untrue statement or alleged untrue statement or omission or alleged omission
made in such registration statement, any such preliminary prospectus, final
prospectus, summary prospectus, amendment or supplement in reliance upon and in
conformity with written information furnished to the Company by or on behalf of
such holder specifically for use in the preparation thereof.  In addition, the
Company shall indemnify any underwriter of such offering and each other Person,
if any, who controls any such underwriter within the meaning of the Securities
Act in substantially the same manner and to substantially the same extent as the
indemnity herein provided to each Indemnified Party.  Such indemnity shall
remain in full force and effect regardless of any investigation made by or on
behalf of such holder or any such director, officer, underwriter or controlling
person and shall survive the transfer of such securities by such holder.

          (b)   Each prospective seller of Registrable Securities hereunder
shall indemnify and hold harmless (in the same manner and to the same extent as
set forth in 

                                      15
<PAGE>
 
subdivision (a) of this Section 2.5) the Company, each director of the Company,
each officer of the Company and each other person, if any, who controls the
Company within the meaning of the Securities Act, with respect to any statement
or alleged statement in or omission or alleged omission from such registration
statement, any preliminary prospectus, final prospectus or summary prospectus
contained therein, or any amendment or supplement thereof, if such statement or
alleged statement or omission or alleged omission was made in reliance upon and
in conformity with written information furnished to the Company by or on behalf
of such seller specifically for use in the preparation of such registration
statement, preliminary prospectus, final prospectus, summary prospectus,
amendment or supplement. Any such indemnity shall remain in full force and
effect, regardless of any investigation made by or on behalf of the Company or
any such director, officer or controlling person and shall survive the transfer
of such securities by such seller. The amount payable by any prospective seller
of Registrable Securities with respect to the indemnification set forth in this
subsection (b) in connection with any offering of Registrable Securities will
not exceed the amount of the gain realized by such prospective seller pursuant
to such offering.

          (c)   Promptly after receipt by an indemnified party of notice of the
commencement of any action or proceeding involving a claim referred to in the
preceding subdivisions of this Section 2.5, such indemnified party will, if a
claim in respect thereof is to be made against an indemnifying party, give
written notice to the latter of the commencement of such action; provided that
                                                                 --------     
the failure of any indemnified party to give notice as provided herein shall not
relieve the indemnifying party of its obligations under the preceding
subdivisions of this Section 2.5, except to the extent that the indemnifying
party is actually prejudiced by such failure to give notice.  In case any such
action is brought against an indemnified party, unless in such indemnified
party's reasonable judgment a conflict of interest between such indemnified and
indemnifying parties may exist in respect of such claim, the indemnifying party
shall be entitled to participate in and to assume the defense thereof, jointly
with any other indemnifying party similarly notified, to the extent that the
indemnifying party may wish, with counsel reasonably satisfactory to such
indemnified party, and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party shall not be liable to such indemnified party for any legal
or other expenses subsequently incurred by the latter in connection with the
defense thereof.  No indemnifying party shall, without the consent of the
indemnified party, consent to entry of any judgment or enter into any settlement
of any such action which does not include as an unconditional term thereof the
giving by the claimant or plaintiff to such indemnified party of a release from
all liability in respect to such claim or litigation.  No indemnified party
shall consent to entry of any judgment or enter into any settlement of any such
action the defense of which has been assumed by an indemnifying party without
the consent of such indemnifying party.

          (d)   If the indemnification provided for in the preceding
subdivisions of this Section 2.5 is unavailable to an indemnified party in
respect of any expense, loss, 

                                      16
<PAGE>
 
claim, damage or liability referred to therein, then each indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such expense, loss, claim,
damage or liability (i) in such proportion as is appropriate to reflect the
relative benefits received by the Company on the one hand and the holder or
underwriter, as the case may be, on the other from the distribution of the
Registrable Securities or (ii) if the allocation provided by clause (i) above is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the relative benefits referred to in clause (i) above but also the
relative fault of the Company on the one hand and of the holder or underwriter,
as the case may be, on the other in connection with the statements or omissions
which resulted in such expense, loss, damage or liability, as well as any other
relevant equitable considerations. The relative benefits received by the Company
on the one hand and the holder or underwriter, as the case may be, on the other
in connection with the distribution of the Registrable Securities shall be
deemed to be in the same proportion as (i) the product of the Liquidation
Preference (as defined in Exhibit 1.7 of the Stock Agreement) multiplied by the
number of shares of Series B Preferred Stock into which the Conversion Shares
subject to the relevant distribution were converted, bears to (ii) the gain
realized by the selling holder or the underwriting discounts and commissions
received by the underwriter, as the case may be. The relative fault of the
Company on the one hand and of the holder or underwriter, as the case may be, on
the other shall be determined by reference to, among other things, whether the
untrue or alleged untrue statement of a material fact or omission to state a
material fact relates to information supplied by the Company, by the holder or
by the underwriter and parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission;
provided that the foregoing contribution agreement shall not inure to the
- --------
benefit of any indemnified party if indemnification would be unavailable to such
indemnified party by reason of the proviso contained in the first sentence of
subdivision (a) of this Section 2.5, and in no event shall the obligation of any
indemnifying party to contribute under this subdivision (d) exceed the amount
that such indemnifying party would have been obligated to pay by way of
indemnification if the indemnification provided for under subdivisions (a) or
(b) of this Section 2.5 had been available under the circumstances.

          The Company and the holders of Registrable Securities agree that it
would not be just and equitable if contribution pursuant to this subdivision (d)
were determined by pro rata allocation (even if the holders and any underwriters
                   --- ----                                                     
were treated as one entity for such purpose) or by any other method of
allocation that does not take account of the equitable considerations referred
to in the immediately preceding paragraph and subdivision (c) of this Section
2.5.  The amount paid or payable by an indemnified party as a result of the
losses, claims, damages and liabilities referred to in the immediately preceding
paragraph shall be deemed to include, subject to the limitations set forth
above, any legal or other expenses reasonably incurred by such indemnified party
in connection with investigating or defending any such action or claim.

                                      17
<PAGE>
 
          Notwithstanding the provisions of this subdivision (d), no holder of
Registrable Securities or underwriter shall be required to contribute any amount
in excess of the amount by which (i) in the case of any such holder, the gain
realized by such holder from the sale of Registrable Securities or (ii) in the
case of an underwriter, the total price at which the Registrable Securities
purchased by it and distributed to the public were offered to the public
exceeds, in any such case, the amount of any damages that such holder or
underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission.  No Person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation.

          SECTION 2.6.  Rule 144; Rule 144A; Form S-3.
                        ----------------------------- 

          (a) The Company will file all reports required to be filed by it under
the Securities Act and the Exchange Act and the rules and regulations adopted by
the Commission thereunder and will take such further action as any holder of
Registrable Securities may reasonably request, all to the extent required from
time to time to enable such holder to sell Registrable Securities without
registration under the Securities Act within the limitation of the exemptions
provided by (a) Rule 144 under the Securities Act, as such Rule may be amended
from time to time, or (b) any similar rule or regulation hereafter adopted by
the Commission.  Upon the request of any holder of Registrable Securities, the
Company will deliver to such holder a written statement as to whether it has
complied with such requirements.  The Company further covenants that it will
cooperate with any holder of Registrable Securities and take such further
reasonable action as any holder of Registrable Securities may reasonably request
(including, without limitation, making such reasonable representations as any
such holder may reasonably request), all to the extent required from time to
time to enable such holder to sell Registrable Securities without registration
under the Securities Act within the limitation of the exemptions provided by
Rule 144 and Rule 144A under the Securities Act.

          (b)  For so long as any shares of Registrable Securities are
restricted securities within the meaning of Rule 144(a)(3) under the Securities
Act, the Company covenants and agrees that it shall, during any period in which
it is not subject to Section 13 or 15(d) of the Exchange Act, make available to
any holder of Registrable Securities in connection with the sale of such holder
Registrable Securities and any prospective purchaser of Registrable Securities
from such, in each case upon request, the information specified in, and meeting
the requirements of, Rule 144A(d)(4) under the Securities Act.

          (c) The Company shall file the reports required to be filed by it
under the Exchange Act and shall comply with all other eligibility requirements
for use of Form S-3 set forth in the instructions to Form S-3 (other than
Registration Requirement A.5).

                                      18
<PAGE>
 
                                  ARTICLE III

                                 MISCELLANEOUS

          SECTION 3.1.  Notices.  All notices and other communications provided
                        -------                                                
for hereunder shall be dated and in writing and shall be deemed to have been
given (i) if given by telecopy, when such telecopy is transmitted to the
telecopy number specified in this Section 3.1 and telephonic confirmation of
receipt thereof is obtained or (ii) if given by mail, prepaid overnight courier
or any other means, when received at the address specified in this Section 3.1
or when delivery at such address is refused.  Such notices shall be addressed to
the appropriate party to the attention of the person who executed this Agreement
at the address or telecopy number set forth under such party's signature below
(or to the attention of such other person or to such other address or telecopy
number as such party shall have furnished to each other party in accordance with
this Section 3.1).

          SECTION 3.2.  Binding Nature of Agreement.  This Agreement shall be
                        ---------------------------                          
binding upon and inure to the benefit of and be enforceable by the parties
hereto or their successors in interest, except as expressly otherwise provided
herein.

          SECTION 3.3.  Descriptive Headings.  The descriptive headings of the
                        --------------------                                  
several sections and paragraphs of this Agreement are inserted for reference
only and shall not limit or otherwise affect the meaning hereof.

          SECTION 3.4.  Specific Performance.  Without limiting the rights of
                        --------------------                                 
each party hereto to pursue all other legal and equitable rights available to
such party for the other parties' failure to perform their obligations under
this Agreement, the parties hereto acknowledge and agree that the remedy at law
for any failure to perform their obligations hereunder would be inadequate and
that each of them, respectively, shall be entitled to specific performance,
injunctive relief or other equitable remedies in the event of any such failure.

          SECTION 3.5.  GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND
                        -------------                                        
ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY,
THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE PRINCIPLES OF CONFLICTS
OF LAW.  EACH OF THE PARTIES HERETO HEREBY SUBMITS TO THE NONEXCLUSIVE
JURISDICTION OF THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF
NEW YORK AND OF ANY NEW YORK STATE COURT SITTING IN NEW YORK CITY FOR PURPOSES
OF ALL LEGAL PROCEEDINGS ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY.  EACH OF THE PARTIES HERETO IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY 

                                      19
<PAGE>
 
LAW, ANY OBJECTION WHICH SUCH PARTY MAY NOW OR HEREAFTER HAVE TO THE LAYING OF
THE VENUE OF ANY SUCH PROCEEDING BROUGHT IN SUCH A COURT AND ANY CLAIM THAT ANY
SUCH PROCEEDING BROUGHT IN SUCH A COURT HAS BEEN BROUGHT IN AN INCONVENIENT
FORUM. EACH OF THE PARTIES HERETO IRREVOCABLY CONSENTS TO SERVICE OF PROCESS IN
THE MANNER PROVIDED FOR NOTICES IN SECTION 3.1. NOTHING IN THIS AGREEMENT WILL
AFFECT THE RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER
MANNER PERMITTED BY LAW.

          SECTION 3.6.  WAIVER OF JURY TRIAL.  EACH OF PARTIES HERETO HEREBY
                        --------------------                                
IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
HEREBY.

          SECTION 3.7.  Counterparts.  This Agreement may be executed
                        ------------                                 
simultaneously in any number of counterparts, each of which shall be deemed an
original, but all such counterparts shall together constitute one and the same
instrument.

          SECTION 3.8.  Severability.  In the event that any one or more of the
                        ------------                                           
provisions contained herein, or the application thereof in any circumstances, is
held invalid, illegal or unenforceable in any respect for any reason, the
validity, legality and enforceability of any such provision in every other
respect and of the remaining provisions contained herein shall not be in any way
impaired thereby, it being intended that all of the rights and privileges of the
parties hereto shall be enforceable to the fullest extent permitted by law.

          SECTION 3.9.  Entire Agreement.  This Agreement is intended by the
                        ----------------                                    
parties hereto as a final and complete expression of their agreement and
understanding in respect to the subject matter contained herein.  This Agreement
supersedes all prior agreement and understandings, written or oral, between the
parties with respect to such subject matter.

          SECTION 3.10.  Amendment and Waiver.  Any provision of this Agreement
                         --------------------                                  
may be amended if, but only if, such amendment is in writing and is signed by
the Company and Series B Securityholders owning, or having Series B Preferred
Stock convertible into, at least a majority of shares of Common Stock either
issued or issuable upon the conversion of all outstanding shares of Series B
Preferred Stock, provided that no such amendment may adversely affect the rights
                 --------                                                       
of any Series B Securityholder unless signed by such Series B Securityholder.
Any provision may be waived if, but only if, such waiver is in writing and is
signed by the party or parties waiving such provision and for whose benefit such
provision is intended.

                                      20
<PAGE>
 
          SECTION 3.11.  No Third Party Beneficiaries.  Nothing in this
                         ----------------------------                  
Agreement shall convey any rights upon any person or entity which is not a party
or an assignee of a party to this Agreement.

          SECTION 3.12.  Effectiveness.  This Agreement shall become effective
                         -------------                                        
immediately at such time when (i) the Agent shall have received duly executed
counterparts hereof signed by the Company and each of the Banks (or, in the case
of any party as to which an executed counterpart thereof shall not have been
received, receipt by the Agent in form satisfactory to it of telegraphic, telex
or other written confirmation from such party of execution of a counterpart
hereof by such party) and (ii) the Effective Date under the Stock Agreement
shall occur.

          SECTION 3.13.  No Inconsistent Agreements.  The Company has not
                         --------------------------                      
entered into and will not enter into any registration rights agreement or
similar arrangements the performance by the Company of the terms of which would
in any manner conflict with, restrict or be inconsistent with the performance by
the Company of its obligations under this Agreement.

          IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and delivered as of the date first above written.


                         PERINI CORPORATION


                         By:  ______________________________
                              Name:
                              Title:


                         By:  ______________________________
                              Name:
                              Title:

                         Address for Notices:
                         --------------------
                         73 Mount Wayte Avenue
                         Framingham, MA  01701
                         Facsimile number: (508) 628-2960

                                      21
<PAGE>
 
                         PB CAPITAL PARTNERS, L.P.


                         By:  Richard C. Blum & Associates, L.P., its General
                              Partner

                              By:   Richard C. Blum & Associates, Inc., its
                                    General Partner

                                    By:  ________________________
                                         Name:
                                         Title:

                         Address for Notices:
                         --------------------
                         909 Montgomery Street
                         Suite 400
                         San Francisco, California 94133
                         Attn:      Alexander Dean
                         Facsimile Number:  415-434-3130


                         UNION LABOR LIFE INSURANCE COMPANY 
                         SEPARATE ACCOUNT P

                         By:  ____________________________________
                              Name:
                              Title:

                         Address for Notices:
                         --------------------
                         111 Massachusetts Avenue, N.W.
                         Washington, D.C.  20001
                         Attn:      Michael P. Steed
                         Facsimile Number:  202-682-7970

                                      22
<PAGE>
 
                               VOTING AGREEMENT
                               ----------------


     THIS VOTING AGREEMENT, dated as of November __, 1996 (this "Agreement"), is
by and among PB CAPITAL PARTNERS, L.P.,  a Delaware limited partnership ("PB"),
PERINI CORPORATION, a Massachusetts corporation (the "Corporation"), DAVID B.
PERINI ("D. Perini"), [PERINI MEMORIAL FOUNDATION (the "Foundation"),] BART
PERINI ("B. Perini"), [DAVID B. PERINI TESTAMENTARY TRUST (the "Trust"),] Ronald
Tutor ("Tutor"), and TUTOR-SALIBA CORPORATION ("Tutor-Saliba"). PB, D. Perini,
the Foundation, B. Perini, the Trust, Tutor, and Tutor-Saliba are referred to
collectively herein as the "Stockholders" and each individually as a
"Stockholder."

     WHEREAS, each Stockholder is the record and beneficial owner of (1) that
number of shares of Common Stock, par value $1.00 per share ("Common Stock"),
(2) that number of Series B Cumulative Convertible Preferred Stock ("Series B
Cumulative Convertible Preferred Stock"), and (3) that number of Series A Junior
Participating Cumulative Preferred Stock ("Series A Junior Participating Stock")
of the Corporation, set forth opposite such Stockholder's name on Exhibit A
attached hereto (the Common Stock, Series B Cumulative Convertible Preferred
Stock, and Series A Junior Participating Stock, together with any other series
or classes of voting stock to be issued by the Corporation, collectively the
"Perini Voting Stock"); and

     WHEREAS, pursuant to a "Stock Purchase and Sale Agreement, dated July 24,
1996, by and among PB, Richard C. Blum & Associates, L.P. ("RCBA"), and the
Corporation (the "Stock Purchase Agreement"), the Corporation has agreed to sell
to PB, and PB has agreed to purchase from the Corporation, 150,150 shares of
Series B Cumulative Convertible Preferred Stock in consideration for the payment
to the Corporation of $30,030,000.00; and

     WHEREAS, PB has made the execution of this Voting Agreement a condition to
the purchase of the shares of Series B Cumulative Convertible Preferred Stock
and regards this Voting Agreement as integral to the economic value of such
securities; and

     WHEREAS, PB (together with certain of its assigns) are simultaneously
purchasing such securities; and

     WHEREAS, in order to induce PB to enter into the Stock  Purchase Agreement,
the Stockholders desire to enter into this Agreement, which shall inure to the
benefit of PB;
<PAGE>
 
                                     - 2 -

     NOW, THEREFORE, for and in consideration of $10.00 and the premises and
mutual covenants and agreements hereinafter contained, the Stockholders hereby
agree as follows:

     1.   Voting of Shares for Election of Directors.  Each Stockholder hereby
          ------------------------------------------                          
agrees to vote or cause to be voted all Perini Voting Stock owned or hereafter
acquired by him or it, or over which he or it has voting control in such
Stockholder's own right, in favor of the election to the Board of Directors of
the representative designated by PB at the next annual or special meeting of
stockholders at which directors will be elected("Meeting"), which Director shall
serve until his successor is elected and qualified or until his earlier
resignation or removal. At any time during the term of this Agreement, the
Corporation shall cause the nomination for election to the Board of Directors of
the representatives of PB designated in accordance with the Certificate of Vote,
and shall call such Stockholders' meetings as may be necessary or requested by
PB to effect any such election.  The representatives designated by PB shall be
reasonably satisfactory to the Corporation.

     2.   Term.  This Agreement shall remain in force and effect until
          ----                                                        
immediately after the holding of the next Meeting at which the Director
designated pursuant to Section 1 is elected.

     3.   Changes in Common Stock.  In the event that subsequent to the date of
          -----------------------                                              
this Agreement any shares or other securities (other than any shares or
securities of another corporation issued to the stockholders of the Corporation
pursuant to a plan of merger) are issued on, or in exchange for, any of the
shares of the Perini Voting Stock held by the Stockholders by reason of any
stock dividend, stock split, consolidation of shares, reclassification, or
consolidation involving the Corporation, such shares or securities shall be
deemed to be Perini Stock for purposes of this Agreement.

     4.   Representations of Stockholders.  Each Stockholder hereby represents
          -------------------------------                                     
and warrants that (i) he owns and has the right to vote the number of shares of
the Perini Voting Stock set forth opposite his name on Exhibit A attached
hereto, (ii) each of the Stockholders has full power to enter into this
Agreement and has not, prior to the date of this Agreement, executed or
delivered any proxy or entered into any other voting agreement or similar
arrangement that would conflict with the purposes or provisions of this
Agreement, and (iii) he will not take any action inconsistent with the purposes
and provisions of this Agreement.

     5.   Enforceability; Validity. Irreparable damage would result in the event
          ------------------------                                              
that the provisions of this Agreement are not specifically enforced.  Therefore,
the rights to, or obligations of, the parties hereto shall be enforceable in a
court of equity by a decree of specific performance and appropriate injunctive
relief may be applied for and granted in connection therewith.  Such remedies,
and all other remedies provided for in this Agreement, shall, however, be
cumulative and not exclusive and shall be in addition to any other remedies
which any party may have under this Agreement or otherwise.
<PAGE>
 
                                     - 3 -

     6.   Benefit.  Subject to the provisions of Section 9, this Agreement shall
          -------                                                               
be binding upon, and inure to the benefit of, the respective parties hereto and
their successors, assigns, and transferees.

     7.   Governing Law.  This Agreement shall be governed by and construed and
          -------------                                                        
enforced in accordance with the laws of the Commonwealth of Massachusetts
applicable to agreements made and to be performed entirely within the
Commonwealth of Massachusetts.

     8.   Counterparts.  This Agreement may be executed in one or more
          ------------                                                
counterparts, each of which shall be deemed an original but all of which
together shall constitute one and the same instrument.

     9.   Legending. Upon the execution of this Agreement, each certificate or
          ---------                                                           
other instrument for Perini Voting Securities now registered or to be issued in
the name of the Stockholders shall be endorsed by the Secretary of the
Corporation as follows:

     "This certificate is subject to that certain Voting Agreement dated as of
     November __, 1996 by and among the Corporation and certain of the holders
     of its voting stock, a copy of which is on file in the office of the
     Corporation and is available upon request of any Stockholder without
     charge."

Provided, however, that each of the Trust and the Foundation shall be entitled
to withhold from the legending required by this Section up to ten percent (10%)
of its Perini Voting Stock and that such stock -- if disposed of to an
unaffiliated third party prior to the Meeting -- shall not be subject to this
Voting Agreement.

     10.  Terms.  All terms not otherwise defined in this Agreement shall have
          -----                                                               
the meaning set forth in the Stock Purchase Agreement.

     IN WITNESS WHEREOF, the Stockholders have executed this Agreement as of the
date first above written.
 
PERINI CORPORATION                          PB CAPITAL PARTNERS, L.P.
 
 
___________________________________         ________________________________
By:__________________________
Its:___________________________
 
<PAGE>
 
                                     - 4 -

DAVID B. PERINI                          [PERINI MEMORIAL FOUNDATION
 
 
__________________________________       ___________________________________
                                         By:______________________________
                                         Its:______________________________]

BART PERINI                              [DAVID B. PERINI TESTAMENTARY TRUST
 
 
___________________________________      ___________________________________
                                         By:______________________________
                                         Its:_____________________________]

RONALD TUTOR                             TUTOR-SALIBA CORP.
 
 
___________________________________      ___________________________________
                                         By:______________________________
                                         Its:____________________________
<PAGE>
 
                                   EXHIBIT A
                                   ---------
<TABLE>
<CAPTION>
 
 
                                             SERIES B CUMULATIVE         SERIES A JUNIOR
                             COMMON STOCK   CONVERTIBLE PREFERRED    PARTICIPATING PREFERRED
                                                    STOCK                     STOCK
<S>                          <C>            <C>                      <C>
PB Capital
Partners, L.P.
- ---------------------------------------------------------------------------------------------
David Perini
- ---------------------------------------------------------------------------------------------
David Perini Foundation
- ---------------------------------------------------------------------------------------------
Bart Perini
- ---------------------------------------------------------------------------------------------
Perini Testamentary
 Trust
- ---------------------------------------------------------------------------------------------
Tutor-Saliba
 Corporation
- ---------------------------------------------------------------------------------------------
Ronald Tutor
- ---------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
 
                             MANAGEMENT AGREEMENT


     THIS MANAGEMENT AGREEMENT (the "Agreement") is made and entered into as of
November __, 1996 by and among Perini Corporation, a Massachusetts corporation
("Perini"), Tutor-Saliba Corporation, a California corporation ("Tutor-Saliba")
and Ronald N. Tutor ("Tutor"), an individual and President of Tutor-Saliba.

     WHEREAS, Perini has had some difficulty meeting its cash requirements for
the past year due to, inter alia, its high level of capital-intensive civil
construction work and the cash support required by its real estate assets;

     WHEREAS, Perini's financial condition has impeded its ability to perform on
existing projects and to bid on new projects;

     WHEREAS, during the course of 1996, Perini engaged in an extensive search
for new capital to support its cash needs and to provide it the opportunity to
improve operations and improve its competitiveness in the general contracting
and construction industry;

     WHEREAS, as a result of its search for capital, Perini entered into a Stock
Purchase and Sale Agreement dated July 24, 1996 by and among Perini, PB Capital
Partners, L.P., a Delaware limited partnership ("PB Capital Partners"), and
Richard C. Blum & Associates, L.P., a California limited partnership ("RCBA")
(as amended through the date hereof, the "Stock Purchase Agreement"), pursuant
to which it is contemplated that Perini will issue convertible preferred stock
to PB Capital Partners in exchange for an investment by PB Capital Partners of
$30,030,000 (the "Investment");

     WHEREAS, Tutor-Saliba is a limited partner of PB Capital Partners;

     WHEREAS, Tutor-Saliba directly owns approximately 7.24% of the outstanding
common stock, par value $1.00 per share (the "Common Stock") of Perini;

     WHEREAS, Tutor-Saliba has from time to time engaged in construction joint
ventures with Perini under the name Tutor-Saliba/Perini;

     WHEREAS, considering the existing and potential relationships, direct and
indirect, between Tutor-Saliba and Perini, as well as Tutor's expertise and
achievements in the construction industry, the parties hereto desire, in
connection with and contingent upon the Investment, that Tutor-Saliba provide
the services of Tutor to Perini, for the purpose of providing direction to
Perini with respect to its ongoing and future construction operations and
improving Perini's operating efficiency and thus its ability to successfully
compete for new projects and in new areas;

     NOW THEREFORE, in consideration of the premises and of the mutual covenants
herein contained, the parties hereby agree as follows:
<PAGE>
 
     1.   Effectiveness.  Unless sooner terminated pursuant to Section 6 hereof,
          -------------                                                         
this Agreement shall become effective on the date of the closing of the
Investment (the "Effective Date").

     2.   Management.
          ---------- 

          (a) Tutor-Saliba and Tutor each hereby agree to provide to Perini the
management services of Tutor, to assist Perini from time to time (but for no
more than ten (10) days in any calendar month, unless the parties otherwise
agree in writing) as described in Section 2(b) hereof or as the parties hereto
may otherwise agree.

          (b) Tutor shall initially serve as acting Chief Operating Officer of
Perini, and will provide direction with respect to Perini's ongoing and future
construction operations, with the goal of achieving greater operating
efficiencies, reducing Perini's need for working capital, reducing Perini's
exposure to risk by negotiating and bidding on construction projects that will
yield higher profit margins than current projects, negotiating with Perini's
lenders, bonding companies and insurers, and generally improving Perini's cash
flow situation and competitive position in the general contracting and
construction industry.

          (c) Perini hereby agrees to take all action which may be required to:
(i) appoint Tutor acting Chief Operating Officer of Perini; (ii) provide Tutor
with the use of an office at Perini's principal executive offices and
administrative and other support services as may be reasonably necessary in
connection with the performance of Tutor's services under Section 2(b) hereof;
(iii) make available to Tutor the services of such of its employees and
consultants as may be reasonably necessary to the performance of the services
described in Section 2(b) above; and (iv) issue the Option (as defined below)
and otherwise pay the management fee pursuant to Section 3 hereof.

     3.   Compensation.  In return for the provision of Tutor's services, Perini
          ------------                                                          
shall pay a management fee as follows:

          (a) On the Effective Date, Perini shall issue to Tutor, pursuant to
Perini's 1982 Stock Option and Long-Term Performance Incentive Compensation
Plan, as amended (the "Plan") (or, in the event options are unavailable for
issuance under such plan, with similar terms and conditions as under the Plan),
an option (the "Option") exercisable for 150,000 shares of Common Stock, with an
exercise price per share equal to the closing price of the Common Stock on the
American Stock Exchange on the day prior to the Effective Date. The Option will
first become exercisable forty months after the Effective Date.

          (b) Beginning on the Effective Date, Perini shall pay a fee to Tutor-
Saliba at the rate of $150,000 per year, such amount to be paid in twelve equal
monthly installments in arrears on the 15th of each month, or as the parties
hereto shall otherwise agree in writing.

                                       2
<PAGE>
 
     4.   Limitation of Liability.
          ----------------------- 

          (a) Neither Tutor nor Tutor-Saliba makes any express or implied
representation, warranty or guaranty to Perini relating to the services to be
performed by Tutor pursuant to this Agreement or the quality or results of such
services.

          (b) Neither Tutor nor Tutor-Saliba shall be liable to Perini or to any
of its subsidiaries or affiliates or to any third party for failure to perform
the services to be performed by either of them pursuant to this Agreement for
any expense, claim, loss or damage, including, without limitation, indirect,
special, consequential or exemplary damages, suffered other than by reason of
such party's intentional failure to perform the services to be performed by such
party pursuant to this Agreement, or by reason of action taken or omitted to be
taken by such party which was in bad faith and in a manner not reasonably
believed by such party to be in the best interests of Perini.

     5.   Indemnification.  Perini shall indemnify and hold Tutor and Tutor-
          ---------------                                                  
Saliba harmless against all loss, cost, liability and expense arising out of the
performance of this Agreement by Tutor and Tutor-Saliba, upon the same terms and
conditions as those provided to officers and directors of Perini by Section 9 of
the By-laws of Perini.  A true, complete and correct copy of Section 9 of the
By-laws of Perini is attached hereto as Exhibit A.
                                        --------- 

     6.   Termination.  Unless earlier terminated by the parties, this Agreement
          -----------                                                           
shall terminate upon the earliest to occur of (i) December 31, 1998, (ii)
Tutor's inability to perform the services contemplated hereby, whether because
of death, disability or otherwise, (iii) written notice from Perini to Tutor
after, in the determination of a majority of the Executive Committee of the
Board of Directors of Perini, Tutor has failed to perform his obligations under
this Agreement, and (iv) the reasonable determination by the Board of Directors
or Executive Committee of Perini, and written notice thereof to Tutor, that it
would be inadvisable for Tutor to continue performing the services contemplated
by this Agreement.

     7.   Governing Law.  This Agreement shall be construed under and governed
          -------------                                                       
by the internal laws of the Commonwealth of Massachusetts without regard to its
conflict of laws provisions.

     8.   Notices.  Any notice, request, demand or other communication required
          -------                                                              
or permitted hereunder shall be in writing and shall be deemed to have been
given if delivered or sent by facsimile transmission, upon receipt, or if sent
by registered or certified mail, upon the sooner of the date on which receipt is
acknowledged or the expiration of three days after deposit in United States post
office facilities properly addressed with postage prepaid.  All notices to a
party will be sent to the addresses set forth below or to such other address or
person as such party may designate by notice to each other party hereunder:

                                       3
<PAGE>
 
TO TUTOR-SALIBA
OR TUTOR:            Tutor-Saliba Corporation
- --------                                     
                     c/o Ronald N. Tutor
                     15901 Olden Street
                     Sylmar, CA 91342
With a copy to:      [COUNSEL]

TO PERINI:           Perini Corporation
- ---------                              
                     73 Mt. Wayte Avenue
                     Framingham, MA 01701-9160
                     Attn:  Mr. David B. Perini

With a copy to:      Goodwin, Procter & Hoar  LLP
                     Exchange Place
                     Boston, MA  02109
                     Fax (617) 523-1231
                     Attn:  Richard A. Soden, Esq.

Any notice given hereunder may be given on behalf of any party by such party's
counsel or other authorized representative.

     9.   Entire Agreement.  This Agreement, including the exhibit referred
          ----------------                                        
to herein, is complete, reflects the entire agreement of the parties with
respect to its subject matter, and supersedes all previous written or oral
negotiations, commitments and writings. No promises, representations,
understandings, warranties and agreements have been made by any of the parties
hereto except as referred to herein; and all inducements to the making of this
Agreement relied upon by either party hereto have been expressed herein.

     10.  Assignability; Binding Effect.  This Agreement shall not be assignable
          -----------------------------                 
by any of the parties hereto without the written consent of the other parties.
This Agreement shall be binding upon and enforceable by, and shall inure to the
benefit of, the parties hereto and their respective successors and permitted
assigns.

     11.  Execution in Counterparts.  For the convenience of the parties and to
          -------------------------                      
facilitate execution, this Agreement may be executed in two or more
counterparts, each of which shall be deemed an original, but all of which shall
constitute one and the same document.

     12.  Amendments.  This Agreement may not be amended or modified, nor may
          ----------                                       
compliance with any covenant set forth herein be waived, except by a writing
duly and validly executed by each party hereto, or in the case of a waiver, the
party waiving compliance.

     13.  Confidentiality.  Tutor-Saliba and Tutor each hereby agree (i) to keep
          ---------------                              
confidential and not use in any manner adverse to Perini or any of its
subsidiaries or affiliates any confidential information about Perini, any of its
subsidiaries or any of its affiliates, including 

                                       4
<PAGE>
 
without limitation financial information, trade secrets, bidding processes and
other information with respect to actual or prospective bids made or being
considered to be made by any of them and (ii) to indemnify and hold harmless
Perini, its subsidiaries and its affiliates for any and all loss, cost,
liability and expense arising out of a breach of this provision.

                                       5
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the date first set forth above by their duly authorized
representatives.

                                    PERINI CORPORATION

                                    By:_________________________________________
                                    Title:


                                    TUTOR-SALIBA CORPORATION

                                    By:_________________________________________
                                    Title:


                                    RONALD N. TUTOR

                                    ----------------------------------

                                       6

<PAGE>

                                                                      EXHIBIT 42
 
                  AMENDMENT TO BY-LAWS OF PERINI CORPORATION
                  ------------------------------------------


              1.  Section 3.3 of the By-Laws shall be amended and restated in
its entirety as follows:


                  "3.3 Executive Committee and Other Committees. The directors,
                       ----------------------------------------                 
     by a vote of a majority of the directors then in office, shall elect from
     their number an Executive Committee composed of five members and may elect
     such other committees the directors shall determine, and delegate to them
     authority to act as and for the Board to the extent permitted by law and as
     provided herein.

                       "(A) Neither the board of directors nor the Corporation
     shall take any of the following actions without the prior approval of a
     majority of the members of the Executive Committee: (a) any borrowing or
     guarantee by the corporation exceeding $15 million, (b) except for
     issuances of stock or stock options pursuant to the corporation's incentive
     compensation plans or programs, any issu ance of stock (whether common or
     preferred, whether voting or non-voting, whether junior or senior to the
     Series B Cumulative Convertible Preferred Stock) other than Common Stock of
     the corporation in an amount not exceeding five percent (5%) of the issued
     and outstanding Common Stock on September __, 1996, (c) any strategic
     alliance (other than a construction joint venture) involving a capital
     commitment exceeding $5 million, (d) any asset sale or lease exceeding $5
     million (other than equipment dispositions in the normal course of
     business); (e) any redemption or amendment of the Preferred Share Purchase
     Rights, of the kind authorized and declared on September 23, 1988 and
     distributed by the Corporation in September 1988 as the same have been
     amended prior to September __, 1996 ('Rights'), or the preferred stock of
     the Corporation issuable upon the exercise of such Rights, or any amendment
     of the Rights Agreement by and between the Corporation and the First
     National Bank at Boston, dated as of September 23, 1988, as amended; and
     (f) any termination of (other than a termination upon expiration) or
     amendment to the management agreement between the Corporation and Tutor-
     Saliba Corporation; provided, however, that for purposes of this Section
                         --------  ------- 
     3.3(A) of the By-Laws, approval of the Executive Committee shall not be
     required for any decision by the Board of Directors to redeem the Series B
     Cumulative Convertible Preferred Stock pursuant to Section 6(a) of the
     terms thereof. Notwithstanding the foregoing sentence, the board of
     directors of the Corporation may take any of the actions specified in the
     preceding sentence if, after having consulted with and considered the
     advice of outside counsel, it has reasonably determined in good faith that
     the failure of the board to take such action would be likely to cause the
     members of such board to breach their fiduciary duties under applicable
     law.

                       "(B) The Executive Committee shall make the rules for the
     conduct of its business; provided, however, that it shall have no permanent
                              --------  ------- 
<PAGE>

 
     chairman, shall report its actions to the board of directors, and shall
     keep minutes of its meetings. Other Committees created and elected by the
     directors may exercise such powers other than those powers delegated to the
     Executive Committee, as the directors determine. Except as the directors
     may otherwise determine, any such other committee may make the rules for
     the conduct of its business, but unless otherwise provided by the directors
     or waived, its business shall be conducted, or its actions taken as nearly
     as may be the same manner as is provided for by these by-laws with respect
     to meetings or for the conduct of business or the taking of action by the
     directors.

                       "(C) All members of such committees shall hold such
     offices, and all such committees shall exist, solely at the pleasure of the
     board of directors; provided, however, that the Executive Committee may not
                         --------  -------    
     be disbanded, reorganized, or reconstituted without the prior written
     approval of a majority of the members of the Executive Committee as
     constituted prior to such change (if the holders of the Series B Cumulative
     Convertible Preferred Stock then have the right to designate more than one
     member of the Executive Committee pursuant to the Certificate of Vote
     establishing such series, including the members so designated by the
     holders of the Series B Cumulative Convertible Preferred Stock); provided
                                                                      --------  
     further, however, that the board shall not take any action that would
     -------  ------- 
     result in there being fewer members of the Executive Committee designated
     by the holders of the Series B Cumulative Convertible Preferred Stock than
     such holders are entitled to designate pursuant to the Certificate of Vote
     establishing such series. The board shall have the power to rescind any
     action of any committee (other than decisions or actions of the Executive
     Committee pursuant to Section 3.3(A) or 4.5 hereof); provided, however,
                                                          --------  ------- 
     that no such rescission shall have any retroactive effect."

          2.   Section 4.5 of the By-Laws shall be amended by replacing the
phrase "subject to the direction of the directors" each time it appears therein
with "subject to the direction of the Executive Committee for so long as it
exists and thereafter subject to the direction of the directors."

                                     - 2 -


<PAGE>
 
                                                                     EXHIBIT 4.3

                              SHAREHOLDERS' AGREEMENT
                              -----------------------

     This Shareholders' Agreement is made this 13th day of December 1996, by and
between PB Capital Partners, L.P., a Delaware limited partnership ("PB Capital")
and The Union Labor Life Insurance Company Separate Account P ("Account P")
(collectively referred to as the "Parties").  All capitalized terms not defined
herein shall have the meaning attributed to them in the Stock Purchase and Sale
Agreement dated July 24, 1996, as amended ("Stock Purchase Agreement").

     WHEREAS, PB Capital and Account P have each agreed to purchase shares of
Series B Cumulative Convertible Preferred Stock, par value $1.00, ("Series B
Preferred Stock") of Perini Corporation, a Massachusetts corporation ("Seller");
and

     WHEREAS, to provide continuity of management and voting relating to the
ownership of the Series B Preferred Stock, the Parties hereto wish to make
certain provisions for the future voting and future disposal of the Series B
Preferred Stock;

     NOW, THEREFORE, in consideration of the mutual promises and agreements set
forth herein, and for other good and valuable consideration, the receipt and
sufficiency of which  is hereby acknowledged, the Parties hereto, intending to
be legally bound, do hereby covenant, promise and agree as follows:

     1.   Transferability of Shares.  Account P shall not sell, hypothecate,
          -------------------------                                         
pledge, make a gift of, transfer or otherwise dispose of any Shares, or any
interest therein, owned by Account P until the earlier of:

          (a)  five (5) years after the acquisition of such shares from Seller;
          or

          (b)  the dissolution of PB Capital and distribution of its assets to
          the partners.

Notwithstanding the preceding limitation on the transferability of Shares,
should PB Capital sell any of its Shares before any of the events listed in
sections (a) and (b) of this paragraph have occurred, Account P shall have the
right to participate with PB Capital on a pro rata basis in the sale of Shares
by PB Capital to the purchaser at the same price and on the same terms.  For
purposes of this provision, "pro rata" shall mean the fraction the numerator of
which is the number of Shares owned by Account P (assuming that all such Shares
have been converted into common stock of Seller) at the time immediately
preceding the proposed sale, and the denominator of which is the total number of
Shares owned by PB Capital and Account P (assuming that all such Shares have
been converted into common stock of Seller) immediately preceding the proposed
sale.  For purposes of this Shareholders' Agreement, a sale of Shares shall
include (i) a mandatory redemption pursuant to the Certificate of Vote, and (ii)
a distribution of Shares by PB Capital to its partners.
<PAGE>
 
     2.   Further Representations and Warranties of the Parties.  In addition to
          -----------------------------------------------------                 
the obligations undertaken herein, each Party hereby represents and warrants to,
and agrees with, the other Party as follows:

          (a) Such Party is a duly formed legal entity, validly existing and in
              good standing in the State where each is formed, and such Party
              has the full power and authority to execute and deliver this
              Shareholders' Agreement and to undertake and perform the
              obligations herein. Such Party has taken all action required by
              law, its charter, its by-laws or otherwise required to be taken by
              it to authorize the execution and delivery of this Shareholders'
              Agreement.

          (b) Neither the execution and delivery of the Shareholders' Agreement
              nor the assumption of the rights and obligations herein will (i)
              conflict with, or result in a breach of, any provision of such
              Party's charter or by-laws or any other governing document or (ii)
              violate any statute or law or any judgment, order, writ,
              injunction, decree, rule or regulation applicable to such Party.
              No consent, authorization or approval of, or declaration, filing
              or registration with, or exemption by, any governmental or
              regulatory authority is required in connection with the execution,
              delivery of, and the performance by such Party of its obligations
              under this Shareholders' Agreement.

          (c) There is no claim, suit, action, proceeding or investigation
              (whether in law or equity, before or by any government entity or
              before any arbitrator) pending or, to the knowledge of such Party,
              threatened against or affecting such Party, the outcome of which
              would in any manner impair the ability of such Party to perform
              its respective obligations under the Shareholders' Agreement.

     3.   Modification.  This Shareholders' Agreement shall not be modified,
          ------------                                                      
discharged or terminated except by an instrument in writing signed by the Party
against whom any waiver, change, discharge or termination is sought.

     4.   Notices.  All notices or other communications given or make hereunder
          -------                                                              
shall be validly given or made if in writing and delivered by facsimile
transmission or in person at, or mailed by overnight courier to, the following
addresses (and shall be deemed effective at the time or receipt thereof).


     If to Separate Account P:

          The Union Labor Life Insurance Company

                                      -2-
<PAGE>
 
          Separate Account P
          111 Massachusetts Avenue, N.W.
          Washington, D.C.  20001
          Attention:  Michael P. Steed
          Facsimile:  202-682-7970

     With a copy to:

          Paul, Hastings, Janofsky & Walker, LLP
          555 South Flower Street
          23rd Floor
          Los Angeles,  CA  90071
          Attention: Alan J. Barton
          Facsimile: 213-627-0705

     If to PB Capital:

          PB Capital Partners, LP
          909 Montgomery Street, Suite 400
          San Francisco, CA  94133
          Attention:  Alexander Dean
          Facsimile:  415-434-3130

     With a copy to:

          Wilmer, Cutler & Pickering
          2445 M Street, N.W.
          Washington, D.C. 20037
          Attention:  Michael R. Klein and Eric R. Markus
          Facsimile:  202-663-6363

or to such other address as the party to whom notice is to be given may have
previously furnished notice in writing to the other in the manner set forth
above.

     5.   Binding Effect.  Upon execution by both of the Parties hereto, this
          --------------                                                     
Shareholders' Agreement shall be binding upon and inure to the benefit of the
Parties and their heirs, executors, administrators, successors and legal
representatives, except that such enforcement may be subject to bankruptcy,
insolvency, reorganization, moratorium, or other similar laws now or hereafter
in effect relating to creditors' rights and general principles of equity and
except to the extent that rights to indemnity and contribution may be limited by
federal or state securities laws or policies underlying such laws.

     6.   Entire Agreement.  This Shareholders' Agreement contains the entire
          ----------------                                                   
agreement of the Parties with respect to the subject matter hereof, and there
are no representations, covenants or other agreements except as stated or
referred to herein.

                                      -3-
<PAGE>
 
     7.   Assignability.  This Shareholders' Agreement is not transferable or
          -------------                                                      
assignable by either Party.

     8.   Applicable Law.  This Shareholders' Agreement shall be governed by and
          --------------                                                        
construed in accordance with the laws of the State of Delaware, without giving
effect to the principles of the conflicts of laws thereof.

     9.   Counterparts.  This Shareholders' Agreement may be executed through
          ------------                                                       
the use of separate signature pages or in any number of counterparts, and each
of such counterparts shall, for all purposes, constitute one agreement binding
on the Parties, notwithstanding that all Parties are not signatories to the same
counterpart.

                                      -4-
<PAGE>
 
     IN WITNESS WHEREOF, the Parties hereto have entered into this Shareholders'
Agreement as of the date first written above.


THE UNION LABOR LIFE INSURANCE
COMPANY, SEPARATE ACCOUNT P



By:  ______________________________
     Michael R. Steed
     Senior Vice President



PB CAPITAL PARTNERS,  L.P.

By:  Richard C. Blum & Associates, L.P.

     By:  Richard C. Blum & Associates, Inc.

          By:  _________________________________________________________
               Marc Scholvinck, Chief Financial
               Officer and Managing Director

                                      -5-

<PAGE>
 
                                                                     EXHIBIT 6.1

                              SERVICES AGREEMENT
                              ------------------

     This Services Agreement is entered into this 13th day of December 1996, by
and between Richard C. Blum & Associates, L.P., a California limited partnership
("RCBA") and The Union Labor Life Insurance Company Separate Account P ("Account
P").  All capitalized terms not defined herein shall have the meaning attributed
to them in the Stock Purchase and Sale Agreement dated July 24, 1996, as amended
("Stock Purchase Agreement").

     WHEREAS, RCBA is a party to the Stock Purchase Agreement by and among
Perini Corporation ("Seller"), and PB Capital Partners, L.P., ("Purchaser"),
pursuant to which Purchaser agreed to purchase 150,150 shares of newly issued
Series B Cumulative Convertible Preferred Stock, par value $1.00 per share (the
"Series B Preferred Stock"), of Seller for $30,030,000 (the Series B Preferred
Stock as well as the common stock into which it is convertible shall
collectively be referred to as the "Shares");

     WHEREAS, in order to directly hold the legal and beneficial interest in the
Series B Preferred Stock, Account P has entered into that certain Stock
Assignment and Assumption Agreement ("Assignment Agreement") with Purchaser,
whereby on the terms and conditions set forth in the Assignment Agreement
Account P has accepted the assignment and assumed the delegation of Purchaser's
rights and obligations relating to the purchase up to 37,500 shares of Series B
Preferred Stock for a price of up to $7.5 million from the Seller;

     WHEREAS, Account P agrees that a reasonable fee for the services rendered
should be based, at least in part, on the performance of the Series B Preferred
Stock, but the ultimate worth of the Series B Preferred Stock purchased by
Account P cannot be reasonably determined at this time; and

     WHEREAS, the parties hereby agree to defer payment of RCBA's compensation
for identifying and structuring Account P's investment until such time as the
ultimate worth can be determined;

     NOW, THEREFORE, in consideration of the premises and of the respective
representations, warranties, covenants, agreements and conditions contained
herein and other good and valuable consideration the receipt and sufficiency of
which is hereby acknowledged, each of the parties agrees as follows:

     1.   Services.  RCBA has negotiated the terms of the Stock Purchase
          --------                                                      
Agreement and the structure of the Series B Preferred Stock (a portion of which
Account P desires to acquire). RCBA in the future shall provide Account P with
quarterly reports on the performance of the Series B Preferred Stock.  RCBA
shall have no discretion over the acquisition or disposition of Account P's
shares of the Series B Preferred Stock.

     2.   Fee for Reporting Services.  For providing quarterly reports on the
          --------------------------                                         
performance of 
<PAGE>
 
the Series B Preferred Stock, Account P shall pay RCBA a fee of 0.875% per annum
of the amount invested. Account P shall have the right to terminate the
reporting services at any time and to cease paying for those services.

     3.   Fee for Finding and Structuring.  Upon the disposition of all the
          -------------------------------                                  
Shares, Account P shall pay RCBA a fee for finding and structuring the
investment equal to:

          (a) five percent (5%) of the Realized Profits. "Realized Profits"
              shall mean the number, not less than zero, equal to (i) the gross
              proceeds of any and all dispositions of the Shares by Account P,
              minus (ii) the sum of (x) the amount of capital invested
              (including transaction fees and expenses incurred by Account P to
              the extent not reimbursed by Seller), plus (y) an amount equal to
              the reporting fees paid pursuant to paragraph 2, above, plus (z)
              in the case of this section 3(a) only, an amount of profit
              necessary to attain an internal rate of return on invested capital
              equal to nine percent (9%) per annum;

          (b) an additional five percent (5%) of Realized Profits if the Shares
              generate an internal rate of return in excess of fifteen percent
              (15%) per annum;

          (c) an additional five percent (5%) of Realized Profits if the Shares
              generate an internal rate of return in excess of twenty-two and
              one-half percent (22.5%) per annum; and

          (d) an additional five percent (5%) of Realized Profits if the Shares
              generate an internal rate of return in excess of thirty percent
              (30%) per annum.

For purposes of sections (a) through (d) of this paragraph 3, the internal rate
of return shall be calculated: (x) after deducting (i) the amount of reporting
fees paid pursuant to paragraph 2, above, plus (ii) transaction fees and
expenses incurred by Account P to the extent not reimbursed by Seller or
capitalized, but (y) without first deducting the finding and structuring fees to
be paid pursuant to sections (a) through (d) of this paragraph 3.  If Account P
has not disposed of all its Shares on or before the date which is the fifth
anniversary of the date on which Account P purchased the Series B Preferred
Stock, the finding and structuring fee provided for in this paragraph 3 shall be
calculated by (i) treating the shares of Series B Preferred Stock that have not
been converted into common stock of Seller as having been converted into common
stock of Seller and (ii) that all Shares not previously disposed of as having
been disposed of on such fifth anniversary date for a price equal to the average
of the closing price of such common stock for the preceding thirty (30) trading
days.

     4.   Transaction Fees.  Any and all fees earned by RCBA or any of its
          ----------------                                                
officers, directors and Affiliates which are paid by the Seller relating to the
Series B Preferred Stock, including but not limited to, origination fees,
investment banking fees, management fees, and 

                                      -2-
<PAGE>
 
exit fees shall be paid to Account P on a pro rata basis, unless the parties
hereto otherwise agree. For purposes of this provision, "pro rata" shall mean
the fraction the numerator of which is the number of Shares owned by Account P
(assuming that all such Shares have been converted into common stock of Seller)
and the denominator of which is the total number of Shares owned by PB Capital
and Account P (assuming that all such Shares have been converted into common
stock of Seller).

     5.   Expenses.  Account P shall be reimbursed by PB for up to $45,000 of
          --------                                                           
its expenses in connection with its purchase of the Series B Preferred Stock.
Such amounts reimbursed by PB shall be treated as expenses of PB for purposes of
the following sentence.  Account P shall bear its proportionate share of
transaction and due diligence expenses, including legal fees, incurred by RCBA
or PB, to the extent not otherwise reimbursed by Seller.

     6.   Further Representations and Warranties of Account P.  In addition to
          ---------------------------------------------------                 
the obligations undertaken herein, Account P hereby represents and warrants to,
and agrees with, RCBA (which representations and warranties shall be true and
complete on he date hereof and on the Closing Date, as defined in the Stock
Purchase Agreement) as follows:

          (a) Account P has the full power and authority to execute and deliver
              this Services Agreement. Account P has taken all action required
              by law, its charter, its by-laws or otherwise required to be taken
              by it to authorize the execution and delivery of this Services
              Agreement and the consummation of the transactions contemplated to
              be performed by it under the Services Agreement.

          (b) The execution and delivery of the Services Agreement will not (i)
              conflict with, or result in a breach of, any provision of Account
              P's charter or by-laws or any other governing document or (ii) to
              the knowledge of Account P, violate any judgment, order, writ,
              injunction, or decree applicable to Account P. No consent,
              authorization or approval of, or declaration, filing or
              registration with, or exemption by, any governmental or regulatory
              authority is required in connection with the execution and
              delivery of, and the performance by Account P of its obligations
              under this Services Agreement.

          (c) There is no claim, suit, action, proceeding or investigation
              (whether in law or equity, before or by any government entity or
              before any arbitrator) pending or, to the knowledge of Account P,
              threatened against or affecting Account P, the outcome of which
              would in any manner impair the ability of Account P to perform its
              obligations under the Services Agreement.

     7.   Representations and Warranties of RCBA.  In addition to RCBA's
          --------------------------------------                        
obligations as provided herein, RCBA hereby represents and warrants, and agrees
with Account P (which 

                                      -3-
<PAGE>
 
representations and warranties shall be true and complete on he date hereof and
on the Closing Date, as defined in the Stock Purchase Agreement) as follows:

          (a) RCBA is a limited partnership duly formed, validly existing and in
              good standing under the California Revised Limited Partnership Act
              (the "Partnership Act") and has the partnership power and
              authority to execute and deliver this Services Agreement and own
              its properties and carry on its business as described its
              partnership agreement.

          (b) There is no litigation, investigation or other proceeding pending
              against RCBA which, if adversely determined, would materially
              adversely affect the business or financial condition of RCBA or
              its ability to perform its obligations under the Services
              Agreement.

          (c) The execution and delivery of the Services Agreement by RCBA does
              not result in the violation of or constitute a default under or
              breach of any contract, indenture, agreement, instrument or
              mortgage applicable to RCBA.
 
     8.   Modification.  This Services Agreement shall not be modified,
          ------------                                                 
discharged or terminated except by an instrument in writing signed by the party
against whom any waiver, change, discharge or termination is sought.

     9.   Notices.  All notices or other communications given or make hereunder
          -------                                                              
shall be validly given or made if in writing and delivered by facsimile
transmission or in person at, or mailed by overnight courier to, the following
addresses (and shall be deemed effective at the time or receipt thereof).


     If to Separate Account P:

          The Union Labor Life Insurance Company
          Separate Account P
          111 Massachusetts Avenue, N.W.
          Washington, D.C.  20001
          Attention:  Michael P. Steed
          Facsimile:  202-682-7970

     With a copy to:

          Paul, Hastings, Janofsky & Walker, LLP
          555 South Flower Street
          23rd Floor

                                      -4-
<PAGE>
 
          Los Angeles,  CA  90071
          Attention: Alan J. Barton
          Facsimile: 213-627-0705

     If to RCBA:

          Richard C. Blum & Associates, LP
          909 Montgomery Street, Suite 400
          San Francisco, CA  94133
          Attention:  Alexander Dean
          Facsimile:  415-434-3130

     With a copy to:

          Wilmer, Cutler & Pickering
          2445 M Street, N.W.
          Washington, D.C. 20037
          Attention:  Michael R. Klein and Eric R. Markus
          Facsimile:  202-663-6363

or to such other address as the party to whom notice is to be given may have
previously furnished notice in writing to the other in the manner set forth
above.

     10.  Binding Effect.  Upon execution by both of the parties hereto, this
          --------------                                                     
Services Agreement shall be binding upon and inure to the benefit of the parties
and their heirs, executors, administrators, successors and legal
representatives, except that such enforcement may be subject to bankruptcy,
insolvency, reorganization, moratorium, or other similar laws now or hereafter
in effect relating to creditors' rights and general principles of equity and
except to the extent that rights to indemnity and contribution may be limited by
federal or state securities laws or policies underlying such laws.

     11.  Entire Agreement.  This Services Agreement contains the entire
          ----------------                                              
agreement of the parties, and there are no representations, covenants or other
agreements except as stated or referred to herein.

     12.  Assignability.  This Services Agreement is not transferable or
          -------------                                                 
assignable by either party hereto, except that the fees payable to RCBA under
this Services Agreement may be assigned by RCBA.

     13.  Applicable Law.  This Services Agreement shall be governed by and
          --------------                                                   
construed in accordance with the laws of the State of Delaware, without giving
effect to the principles of the conflicts of laws thereof.

                                      -5-
<PAGE>
 
     14.  Counterparts.  This Services Agreement may be executed through the use
          ------------                                                          
of separate signature pages or in any number of counterparts, and each of such
counterparts shall, for all purposes, constitute one agreement binding on all
the parties, notwithstanding that all parties are not signatories to the same
counterpart.

     15.  Termination.   This Service Agreement may be terminated on thirty (30)
          -----------                                                           
days' written notice by either Party with or without cause.  Notwithstanding any
such termination, the obligations to make the payments called for by paragraphs
3, 4, and 5 shall survive any termination until fully paid.

                                      -6-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have entered into this Services
Agreement as of the date first written above.


THE UNION LABOR LIFE INSURANCE 
COMPANY, SEPARATE ACCOUNT P



By:  _____________________
     Michael R. Steed
     Senior Vice President
 

RICHARD C. BLUM & ASSOCIATES,  L.P.

     By:  Richard C. Blum & Associates, Inc.

          By:  ________________________________
               Marc Scholvinck, Chief Financial
               Officer and Managing Director

                                      -7-

<PAGE>
 
                                                                     EXHIBIT 6.2

                         REGISTRATION RIGHTS AGREEMENT
                         -----------------------------


          REGISTRATION RIGHTS AGREEMENT dated as of _____________ ___, 1996
between PERINI CORPORATION, a Massachusetts corporation (together with its
successors, the "Company"), PB CAPITAL PARTNERS, L.P. ("PB"), UNION LABOR LIFE
                 -------                                --                    
INSURANCE COMPANY SEPARATE ACCOUNT P ("Account P" and, together with PB, the
                                       ---------                            
"Initial Stockholders").
- ---------------------   

          WHEREAS, as required by the terms and conditions of the Stock Purchase
Agreement dated as of July 24, 1996, as amended (the "Stock Agreement"), among
                                                      ---------------         
the Company, PB, and Richard C. Blum & Associates, L.P. ("RCBA"), the Company
                                                          ----               
shall issue to PB on the Closing (as defined in the Stock Agreement), the Series
B Preferred Stock (as defined herein) which such stock is convertible into
common stock of the Company, par value $1.00 per share;

          WHEREAS, PB -- with the Company's consent -- has assigned its rights
and obligations under the Stock Agreement to acquire a portion of the Series B
Preferred Stock to Account P, and Account P has accepted such assignment;

          WHEREAS, the Company has agreed with the Initial Stockholders, for
their benefit and for the benefit of the other holders of the Series B Preferred
Stock and holders of Conversion Shares (as defined in the Stock Agreement) to
provide certain rights as set forth herein;

          NOW THEREFORE the parties hereto agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

          SECTION 1.1.  Definitions.  Unless otherwise defined herein, the
                        -----------                                       
following terms used in this Agreement shall have the meanings specified below.

          "Account P" has the meaning set forth in the introductory paragraph
           ---------                                                         
hereof.

          "Affiliate" means, with respect to any Person, any of (i) a director
           ---------                                                          
or executive officer of such Person, (ii) a spouse, parent, sibling or
descendant of such Person (or a spouse, parent, sibling or descendant of any
director or executive officer of such Person) and (iii) any other Person that,
directly or indirectly, controls, or is controlled by or is under common control
with such Person.  For the purpose of this definition, "control" (including the
terms "controlling", "controlled by" and "under common control with"), as used
with respect to any Person, means the possession, 
<PAGE>
 
directly or indirectly, of the power to direct or cause the direction of the
management or policies of such Person, whether through the ownership of voting
securities or by contract or agency or otherwise.

          "Business Day" means a day except a Saturday, Sunday or other day on
           ------------                                                       
which commercial banks in New York City are authorized by law to close.

          "Common Stock" means the common stock, par value $1.00 per share, of
           ------------                                                       
the Company.

          "Company" has the meaning set forth in the introductory paragraph
           -------                                                         
hereof.

          "Conversion Shares" means (i) any shares of Common Stock or other
           -----------------                                               
securities issued or issuable upon the conversion of any shares of Series B
Preferred Stock; (ii) the shares of Common Stock or other securities issued to
PB as a participation fee in connection with PB's purchase of a 100%
participation interest in a $10,000,000 extension of credit to the Company
pursuant to the Bridge Credit Agreement dated as of February 26, 1996 among
Perini Corporation ("Perini"), the Bridge Banks listed in the Bridge Credit
Agreement, and Morgan Guaranty Trust Company of New York, as Agent, as amended
through November __, 1996; or (iii) any securities issued or issuable with
respect to any of such shares or other securities referred to in clause (i) or
(ii) upon the conversion thereof into other securities or by way of stock
dividend or stock split or in connection with a combination of shares,
recapitalization, merger, consolidation or other reorganization or otherwise;
                                                                             
provided that any of such securities shall cease to be Conversion Shares when
- --------                                                                     
such securities shall have (x) been disposed of pursuant to a Public Sale or (y)
ceased to be outstanding.

          "Deferral Period" has the meaning set forth in Section 2.1(d).
           ---------------                                              

          "Effectiveness Period" means the period commencing on the date hereof
           --------------------                                                
and ending on the date that all Conversion Shares shall have ceased to be
Registrable Securities.

          "Exchange Act" means the Securities Exchange Act of 1934, or any
           ------------                                                   
successor Federal statute, and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.  Reference to a
particular section of the Securities Exchange Act of 1934 shall include a
reference to the comparable section, if any, of any such successor Federal
statute.

          "Filing Date" has the meaning set forth in Section 2.1(a).
           -----------                                              

          "Initial Stockholders" has the meaning set forth in the introductory
           --------------------                                               
paragraph hereof.

                                       2
<PAGE>
 
          "Initial Shelf Registration" has the meaning set forth in Section
           --------------------------                                      
2.1(a).

          "Initiating Holders" has the meaning set forth in Section 2.1(a)
           ------------------                                             
hereof.

          "Managing Underwriters" means the investment banking firm or firms
           ---------------------                                            
that shall manage or co-manage an Underwritten Offering.

          "Notice Holder" means a holder of Registrable Securities who has given
           -------------                                                        
notice of intention to distribute such holder's Registrable Securities in
accordance with Section 2.1(d).

          "PB" has the meaning set forth in the introductory paragraph hereof.
           --                                                                 

          "Person" means an individual, a corporation, a partnership, a limited
           ------                                                              
liability partnership, a limited liability company, an association, a trust or
any other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

          "Prospectus" means the prospectus included in any Registration
           ----------                                                   
Statement (including, without limitation, a prospectus that discloses
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A promulgated under the
Securities Act), as amended or supplemented by any amendment or prospectus
supplement, including post-effective amendments, and all material incorporated
by reference or deemed to be incorporated by reference in such Prospectus.

          "Public Sale" means any sale of Common Stock to the public pursuant to
           -----------                                                          
an offering registered under the Securities Act or to the public through a
broker, dealer or market maker pursuant to the provisions of Rule 144 (or any
successor provision then in effect) adopted under the Securities Act.

          "Registrable Securities" means any Conversion Shares until the date
           ----------------------                                            
(if any) when (i) such Conversion Shares shall have been transferred or
exchanged and new certificates for them not bearing a legend restricting further
transfer shall have been delivered by the Company or (ii) if requested to do so,
the Company would be required to deliver certificates for such Conversion Shares
not bearing a legend restricting further transfer, and, in each case, subsequent
disposition of such Conversion Shares shall not require registration or
qualification under the Securities Act or any similar state law then in force.

          "Registration Statement" means any registration statement of the
           ----------------------                                         
Company which covers any of the Registrable Securities pursuant to the
provisions of this Agreement, including the Prospectus, amendments and
supplements to such registration statement, including post-effective amendments,
all exhibits, and all material 

                                       3
<PAGE>
 
incorporated by reference or deemed to be incorporated by reference in such
registration statement.

          "Restricted Securities" means the Series B Preferred Stock, the
           ---------------------                                         
Conversion Shares and any securities obtained upon exchange for or upon
conversion or transfer of or as a distribution on Series B Preferred Stock, the
Conversion Shares or any such securities; provided that particular securities
                                          --------                           
shall cease to be Restricted Securities when such securities shall have (x) been
disposed of pursuant to a Public Sale, (y) been otherwise transferred or
exchanged and new certificates for them not bearing a legend restricting further
transfer shall have been delivered by the Company and subsequent disposition of
them shall not require registration or qualification of them under the
Securities Act or any similar state law then in force or (z) ceased to be
outstanding.

          "Rule 144" means Rule 144 under the Securities Act, as such Rule may
           --------                                                           
be amended from time to time, or any similar rule or regulation hereafter
adopted by the SEC.

          "Rule 144A" means  Rule 144A under the Securities Act, as such Rule
           ---------                                                         
may be amended from time to time, or any similar rule or regulation hereafter
adopted by the SEC.

          "SEC" means the Securities and Exchange Commission or any other
           ---                                                           
Federal agency at the time administering the Securities Act.

          "Securities Act" means the Securities Act of 1933, or any similar
           --------------                                                  
Federal statute, and the rules and regulations of the Commission thereunder, all
as the same shall be in effect at the time.  Reference to a particular section
of the Securities Act of 1933 shall include a reference to the comparable
section, if any, of any such similar Federal statute.

          "Selling Period" has the meaning set forth in Section 2.1(d).
           --------------                                              

          "Series B Preferred Stock" means the Series B Cumulative Convertible
           ------------------------                                           
Preferred Stock originally issued to the Initial Stockholders in accordance with
the Stock Agreement, as such stock may be transferred or otherwise assigned, but
only to the extent not theretofore converted, redeemed or expired in accordance
with their respective terms.

          "Series B Securityholder" means at any time any Stockholder or any
           -----------------------                                          
holder of Conversion Shares.

          "Shelf Registration" has the meaning set forth in Section 2.1(a).
           ------------------                                              

          "Special Counsel" means any law firm retained from time to time by the
           ---------------                                                      
holders of a majority of the Registrable Securities to be sold pursuant to a
Registration 

                                       4
<PAGE>
 
Statement or during any Selling Period, as shall be specified by such holders to
the Company; provided that at no time there shall be more than one Special
             --------
Counsel the fees and expenses of which will be paid by the Company pursuant to
Section 2.4.

          "Stock Agreement" has the meaning set forth in the recitals.
           ---------------                                            

          "Subsequent Shelf Registration" has the meaning set forth in Section
           -----------------------------                                      
2.1(b).

          "Stockholder" means a holder of Series B Preferred Stock.
           -----------                                             

          "Underwritten Offering" means a registration in which Registrable
           ---------------------                                           
Securities are sold or to be sold to one or more underwriters for reoffering to
the public.


                                   ARTICLE II

                              REGISTRATION RIGHTS

          SECTION 2.1  Shelf Registration.
                       ------------------ 

          (a)   As soon as practicable but in any event not later than the date
(the "Filing Date") that is sixty (60) days after receipt by the Company of a
      -----------                                                            
written request by the holder or holders of a majority of all outstanding
Conversion Shares and Series B Preferred Stock (such majority determined, for
purposes of this Section 2.1, based on the aggregate number of Conversion Shares
then outstanding plus the number of Conversion Shares into which any outstanding
shares of Series B Preferred Stock are then convertible) (the "Initiating
                                                               ----------
Holders"), the Company shall prepare and file with the SEC a Registration
- -------                                                                  
Statement for an offering to be made on a delayed or continuous basis pursuant
to Rule 415 of the Securities Act (a "Shelf Registration") registering the
                                      ------------------                  
resale from time to time by the holders thereof of all of the Registrable
Securities upon and following conversion of the Series B Preferred Stock (the
                                                                             
"Initial Shelf Registration"). The Registration Statement for any Shelf
- ---------------------------                                            
Registration shall be on Form S-3 or another appropriate form permitting
registration of such Registrable Securities for resale by such holders in the
manner or manners designated by them (including, without limitation, one or more
Underwritten Offerings).  The Company shall use its reasonable efforts to cause
the Initial Shelf Registration to become effective under the Securities Act as
promptly as is practicable and to keep the Initial Shelf Registration
continuously effective under the Securities Act until the end of the
Effectiveness Period.

          (b) If the Initial Shelf Registration or any Subsequent Shelf
Registration (as defined below) ceases to be effective for any reason at any
time during the Effectiveness Period (other than because all Registrable
Securities shall have been sold or shall have ceased to be Registrable
Securities), the Company shall use all 

                                       5
<PAGE>
 
reasonable efforts to obtain the prompt withdrawal of any order suspending the
effectiveness thereof, and in any event shall within thirty days of such
cessation of effectiveness amend the Shelf Registration in a manner reasonably
expected to obtain the withdrawal of the order suspending the effectiveness
thereof, or file an additional Shelf Registration covering all of the
Registrable Securities (a "Subsequent Shelf Registration"). If a Subsequent
                           -----------------------------
Shelf Registration is filed, the Company shall use all reasonable efforts to
cause the Subsequent Shelf Registration to become effective as promptly as is
practicable after such filing and to keep such Registration Statement
continuously effective until the end of the Effectiveness Period.

          (c) The Company shall supplement and amend the Shelf Registration if
required by the rules, regulations or instructions applicable to the
registration form used by the Company for such Shelf Registration, if required
by the Securities Act, or if reasonably requested by any holder of the
Registrable Securities covered by such Registration Statement or by any Managing
Underwriter of such Registrable Securities.

          (d) Each Series B Securityholder agrees that if it wishes to sell any
Registrable Securities pursuant to a Shelf Registration and related Prospectus,
it will do so only in accordance with this Section 2.1(d).  Each holder of
Registrable Securities agrees to give written notice to the Company at least six
Business Days prior to any intended distribution of Registrable Securities under
the Shelf Registration, which notice shall specify the date on which such holder
intends to begin such distribution and any information with respect to such
holder and the intended distribution of Registrable Securities by such holder
required to amend or supplement the Registration Statement with respect to such
intended distribution of Registrable Securities by such holder; provided that no
                                                                --------        
holder may give such notice unless such notice, together with notices given by
other holders of Registrable Securities joining in such notice or giving similar
notices, covers at least 30,000 Conversion Shares.  As promptly as is
practicable after the date such notice is provided, and in any event within five
Business Days after such date, the Company shall either:

     (i) (A) prepare and file with the SEC a post-effective amendment to the
  Shelf Registration or a supplement to the related Prospectus or a supplement
  or amendment to any document incorporated therein by reference or any other
  required document, so that such Registration Statement will not contain any
  untrue statement of a material fact or omit to state a material fact required
  to be stated therein or necessary to make the statements therein not
  misleading, and so that, as thereafter delivered to purchasers of the
  Registrable Securities being sold thereunder, such Prospectus will not contain
  any untrue statement of a material fact or omit to state a material fact
  required to be stated therein or necessary to make the statements therein, in
  light of the circumstances under which they were made, not misleading; (B)
  provide each Notice Holder a copy of any documents filed pursuant to Section
  2.1(d)(i)(A); and (C) inform each Notice Holder that the Company has complied
  with its obligations in Section 2.1(d)(i)(A) and that the 

                                       6
<PAGE>
 
  Registration Statement and related Prospectus may be used for the purpose of
  selling all or any of such Registrable Securities (or that, if the Company has
  filed a post-effective amendment to the Shelf Registration which has not yet
  been declared effective, the Company will notify each Notice Holder to that
  effect, will use all reasonable efforts to secure the effectiveness of such
  post-effective amendment and will immediately so notify each Notice Holder
  when the amendment has become effective); each Notice Holder will sell all or
  any or such Registrable Securities pursuant to the Shelf Registration and
  related Prospectus only during the 45-day period commencing with the date on
  which the Company gives notice, pursuant to Section 2.1(d)(i)(C), that the
  Registration Statement and Prospectus may be used for such purpose (such 45-
  day period is referred to as a "Selling Period"); each Notice Holder agrees
                                  --------------
  that it will not sell any Restricted Securities pursuant to such Registration
  Statement or Prospectus after such Selling Period without giving a new notice
  of intention to sell pursuant to Section 2.1(d) hereof and receiving a further
  notice from the Company pursuant to Section 2.1(d)(i)(C) hereof; or

     (ii) if, in the judgment of the Company, it is advisable to suspend use of
  the Prospectus for a period of time due to pending material corporate
  developments or similar material events that have not yet been publicly
  disclosed and as to which the Company believes public disclosure will be
  prejudicial to the Company, the Company shall deliver a certificate in
  writing, signed by its Chief Executive Officer, Chief Financial Officer or
  General Counsel, to the Notice Holders, the Special Counsel and the Managing
  Underwriters, if any, to the effect of the foregoing and, upon receipt of such
  certificate, each such Notice Holder's Selling Period will not commence until
  such Notice Holder's receipt of copies of the supplemented or amended
  Prospectus provided for in Section 2.1(d)(i)(A) hereof, or until it is advised
  in writing by the Company that the Prospectus may be used, and has received
  copies of any additional or supplemental filings that are incorporated or
  deemed incorporated by reference in such Prospectus.  The Company will use all
  reasonable efforts to ensure that the use of the Prospectus may be resumed,
  and the Selling Period will commence, upon the earlier of (x) public
  disclosure of such pending material corporate development or similar material
  event or (y) a determination by the Company that, in the judgment of the
  Company, public disclosure of such material corporate development or similar
  material event would not be prejudicial to the Company.  Notwithstanding the
  foregoing, the Company shall not under any circumstances be entitled to
  exercise its right under this Section 2.1(d) to defer the commencement of a
  Selling Period more than one time in any three-month period or two times in
  any twelve-month period, and the period in which a Selling Period is suspended
  shall not exceed fifteen days unless the Company shall deliver to such Notice
  Holders a second certificate to the effect set forth above, which shall have
  the effect of extending the period during which such Selling Period is
  deferred by up to an additional fifteen days, or such shorter period of time
  as is specified in such second 

                                       7
<PAGE>
 
  certificate. In no event shall the Company be permitted to extend the period
  during which such Selling Period is deferred from and after the date a Notice
  Holder provides notice to the Company in accordance with this Section 2.1(d)
  of its intention to distribute Registrable Securities (a "Deferral Period")
                                                            ---------------
  beyond such 30-day period.

          SECTION 2.2.  Registration Procedures.  In connection with the
                        -----------------------                         
Company's registration obligations under Section 2.1 hereof, the Company shall
effect such registrations to permit the sale of the Registrable Securities in
accordance with the intended method or methods of disposition thereof, and
pursuant thereto the Company shall as expeditiously as possible:

          (a) Prepare and file with the SEC a Registration Statement or
Registration Statements on any appropriate form under the Securities Act
available for the sale of the Registrable Securities by the holders thereof in
accordance with the intended method or methods of distribution thereof, and use
its reasonable efforts to cause each such Registration Statement to become
effective and remain effective as provided herein; provided, that before filing
                                                   --------                    
any such Registration Statement or Prospectus or any amendments or supplements
thereto (other than documents that would be incorporated or deemed to be
incorporated therein by reference and that the Company is required by applicable
securities laws or stock exchange requirements to file) the Company shall
furnish to the Initial Stockholders, the Initiating Holders, the Special Counsel
and the Managing Underwriters of such offering, if any, copies of all such
documents proposed to be filed, which documents will be subject to the review of
the Initial Stockholders, the Initiating Holders, the Special Counsel and such
Managing Underwriters, and the Company shall not file any such Registration
Statement or amendment thereto or any Prospectus or any supplement thereto
(other than such documents which, upon filing, would be incorporated or deemed
to be incorporated by reference therein and that the Company is required by
applicable securities laws or stock exchange requirements to file) to which the
holders of a majority of the Registrable Securities covered by such Registration
Statement, the Initial Stockholders, the Initiating Holders or the Special
Counsel shall reasonably object in writing within two full Business Days.

          (b) Prepare and file with the SEC such amendments and post-effective
amendments to each Registration Statement as may be necessary to keep such
Registration Statement continuously effective for the applicable period
specified in Section 2.1; cause the related Prospectus to be supplemented by any
required Prospectus supplement, and as so supplemented to be filed pursuant to
Rule 424 (or any similar provisions then in force) under the Securities Act; and
comply with the provisions of the Securities Act with respect to the disposition
of all securities covered by such Registration Statement during the applicable
period in accordance with the intended methods of disposition by the sellers
thereof set forth in such Registration Statement as so amended or such
Prospectus as so supplemented.

                                       8
<PAGE>
 
          (c) Notify the selling Series B Securityholders, the Initial Stock
holders, the Initiating Holders, the Special Counsel and the Managing
Underwriters, if any, promptly, and (if requested by any such person) confirm
such notice in writing, (i) when a Prospectus, any Prospectus supplement, a
Registration Statement or a post-effective amendment to a Registration Statement
has been filed with the SEC, and, with respect to a Registration Statement or
any post-effective amendment, when the same has become effective, (ii) of any
request by the SEC or any other federal or state governmental authority for
amendments or supplements to a Registration Statement or related Prospectus or
for additional information, and of the contents of such request, (iii) of the
issuance by the SEC or any other federal or state governmental authority of any
stop order suspending the effectiveness of a Registration Statement or the
initiation or threatening of any proceedings for that purpose, (iv) of the
receipt by the Company of any notification with respect to the suspension of the
qualification or exemption from qualification of any of the Registrable
Securities for sale in any jurisdiction or the initiation or threatening of any
proceeding for such purpose, (v) of the existence of any fact or happening of
any event which makes any statement of a material fact in such Registration
Statement or related Prospectus or any document incorporated or deemed to be
incorporated therein by reference untrue or which would require the making of
any changes in the Registration Statement or Prospectus in order that, in the
case of the Registration Statement, it will not contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and that in the case
of the Prospectus, it will not contain any untrue statement of a material fact
or omit to state any material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein, in the light
of the circumstances under which they were made, not misleading, provided that
                                                                 --------     
the Company shall not be required to disclose such fact or event if such fact or
event has not been publicly disclosed, and (vi) of the Company's determination
that a post-effective amendment to a Registration Statement would be
appropriate.

          (d) Use all reasonable efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration Statement, or the lifting of any
suspension of the qualification (or exemption from qualification) of any of the
Registrable Securities for sale in any jurisdiction, at the earliest possible
moment.

          (e) If reasonably requested by an Initial Stockholder, the Initiating
Holders, the Special Counsel, the Managing Underwriters, if any, or the holders
of a majority of the Registrable Securities being sold, (i) promptly incorporate
in a Prospectus supplement or post-effective amendment to a Registration
Statement such information as the Initial Stockholders, the Initiating Holders,
the Special Counsel, the Managing Underwriters, if any, or such holders, in
connection with any offering of Registrable Securities, agree should be included
therein as required by applicable law, and (ii) make all required filings of
such Prospectus supplement or such post-effective amendment as promptly as is
practicable after the Company has received notification of the matters to be
incorporated in such Prospectus supplement or post-effective amendment;
provided, that 
- --------

                                       9
<PAGE>
 
the Company shall not be required to take any actions under this Section 2.2(e)
that are not, in the reasonable opinion of counsel for the Company, in
compliance with or required by applicable law.

          (f) Furnish to each selling Series B Securityholder, the Special
Counsel, the Initial Stockholders, and each Managing Underwriter, if any,
without charge, at least one conformed copy of the Registration Statement or
Statements and any amendment thereto, including financial statements but
excluding schedules, all documents incorporated or deemed to be incorporated
therein by reference and all exhibits (unless requested in writing by such
Series B Securityholder, Special Counsel, Initial Stockholders, or Managing
Underwriter).

          (g) Deliver to each selling holder of Registrable Securities, the
Special Counsel, the Initial Stockholders, and each Managing Underwriter, if
any, in connection with any offering of Registrable Securities, without charge,
as many copies of the Prospectus or Prospectuses relating to such Registrable
Securities (including each preliminary prospectus) and any amendment or
supplement thereto as such persons may reasonably request; and the Company
hereby consents to the use of such Prospectus or each amendment or supplement
thereto by each of the selling holders of Registrable Securities and the
underwriters, if any, in connection with any offering and sale of the
Registrable Securities covered by such Prospectus or any amendment or supplement
thereto.

          (h) Prior to any public offering of Registrable Securities, to
register or qualify or cooperate with the selling Series B Securityholders, the
Managing Underwriters, if any, and the Special Counsel in connection with the
registration or qualification (or exemption from such registration or
qualification) of such Registrable Securities for offer and sale under the
securities or Blue Sky laws of such jurisdictions within the United States as
any selling Series B Securityholder or Managing Underwriter reasonably requests
in writing to the Company; keep each such registration or qualification (or
exemption therefrom) effective during the period such Registration Statement is
required to be kept effective and do any and all other acts or things necessary
or advisable to enable the disposition in such jurisdictions of the Registrable
Securities covered by the applicable Registration Statement; provided, that the
                                                             --------          
Company will not be required to (i) qualify generally to do business in any
jurisdiction where it is not then so qualified or (ii) take any action that
would subject it to general service of process in suits or to taxation in any
such jurisdiction where it is not then so subject.

          (i) Cause the Registrable Securities covered by the applicable
Registration Statement to be registered with or approved by such other
governmental agencies or authorities within the United States, except as may be
required solely as a consequence of the nature of a selling holder of
Registrable Securities, in which case the Company will cooperate in all
reasonable respects with the filing of such Registration Statement and the
granting of such approvals, as may be necessary to enable the selling 

                                       10
<PAGE>
 
holder or holders thereof or the Managing Underwriters, if any, to consummate
the disposition of such Registrable Securities.

          (j) During any Selling Period (other than during a Deferral Period),
immediately upon the existence of any fact or the occurrence of any event as a
result of which a Registration Statement shall contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, or a Prospectus
shall contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading, promptly prepare and file a post-effective amendment to each
Registration Statement or a supplement to the related Prospectus or any document
incorporated therein by reference or file any other required document (such as a
Current Report on Form 8-K) that would be incorporated by reference into the
Registration Statement so that the Registration Statement shall not contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein not misleading,
and so that the Prospectus will not contain any untrue statement of a material
fact or omit to state any material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
the light of the circumstances under which they were made, not misleading, as
thereafter delivered to the purchasers of the Registrable Securities being sold
thereunder, and, in the case of a post-effective amendment to a Registration
Statement, use all reasonable efforts to cause it to become effective as
promptly as is practicable.

          (k) Enter into such agreements (including, in the event of an
Underwritten Offering, an underwriting agreement in form, scope and substance as
is customary in Underwritten Offerings) and take all such other actions in
connection therewith (including, in the event of an underwritten offering, those
reasonably requested by the Managing Underwriters, if any, or the holders of a
majority of the Registrable Securities being sold) in order to expedite or
facilitate the disposition of such Registrable Securities and in such
connection, whether or not an underwriting agreement is entered into, and if the
registration is an underwritten registration, (i) make such representations and
warranties, subject to the Company's ability to do so, to the holders of such
Registrable Securities and the underwriters with respect to the business of the
Company and its subsidiaries, the Registration Statement, Prospectus and
documents incorporated by reference or deemed incorporated by reference, if any,
in each case, in form, substance and scope as are customarily made by issuers to
underwriters in underwritten offerings and confirm the same if and when
requested; (ii) obtain opinions of counsel to the Company and updates thereof
(which counsel and opinions (in form, scope and substance) shall be reasonably
satisfactory to the Managing Underwriters, if any, Special Counsel and the
holders of a majority of the Registrable Securities being sold) addressed to
each of the underwriters covering the matters customarily covered in opinions
requested in underwritten offerings and such other matters as may be reasonably
requested by such Special Counsel and Managing Underwriters; (iii) obtain
"comfort" 

                                       11
<PAGE>
 
letters and updates thereof from the independent certified public accountants of
the Company (and, if necessary, any other certified public accountants of any
subsidiary of the Company or any business acquired or to be acquired by the
Company for which financial statements and financial data is, or is required to
be, included in the Registration Statement), addressed to each of the Managing
Underwriters, if any, such letters to be in customary form and covering matters
of the type customarily covered in "comfort" letters in connection with
Underwritten Offerings; and (iv) deliver such documents and certificates as may
be reasonably requested by the holders of a majority of the Registrable
Securities being sold, the Special Counsel and the Managing Underwriters, if
any, to evidence the continued validity of the representations and warranties of
the Company and its subsidiaries made pursuant to clause (i) above and to
evidence compliance with any customary conditions contained in the underwriting
agreement or other agreement entered into by the Company.

          (l) If requested in connection with a disposition of Registrable
Securities pursuant to a Registration Statement, make available for inspection
by a representative of the holders of Registrable Securities being sold, any
Managing Underwriter participating in any disposition of Registrable Securities,
if any, and any attorney or accountant retained by such selling holders or
underwriter, financial and other records, pertinent corporate documents and
properties of the Company and its subsidiaries, and cause the executive
officers, directors and employees of the Company and its subsidiaries to supply
all information reasonably requested by any such representative, Managing
Underwriter, attorney or accountant in connection with such disposition; subject
to reasonable written assurances by each such person that such information will
only be used in connection with matters relating to such Registration Statement.

          (m) Comply with all applicable rules and regulations of the SEC and
make generally available to its securityholders earning statements (which need
not be audited) satisfying the provisions of Section 11(a) of the Securities Act
and Rule 158 thereunder (or any similar rule promulgated under the Securities
Act) no later than 45 days after the end of any 12-month period (or 90 days
after the end of any 12-month period if such period is a fiscal year) (i)
commencing at the end of any fiscal quarter in which Registrable Securities are
sold to underwriters in a firm commitment or best efforts underwritten offering,
and (ii) if not sold to underwriters in such an offering, commencing on the
first day of the first fiscal quarter of the Company commencing after the
effective date of a Registration Statement, which statements shall cover said
12-month periods.

          (n) Cooperate with the selling Series B Securityholders to facilitate
the timely preparation and delivery of certificates representing Registrable
Securities to be sold and not bearing any restrictive legends; and enable such
Registrable Securities to be in such denominations and registered in such names
as the selling Series B Securityholders may request.

                                       12
<PAGE>
 
          (o) Use all reasonable efforts to provide a CUSIP number for the
Registrable Securities not later than the effective date of the registration.

          (p) Cause all Registrable Securities covered by the Registration
Statement to be listed on each securities exchange or quotation system on which
the Company's Common Stock is then listed no later than the date the
Registration Statement is declared effective and, in connection therewith, to
the extent applicable, to make such filings under the Exchange Act (e.g., the
filing of a Registration Statement on Form 8-A) and to have such filings
declared effective thereunder.

          (q) Cooperate and assist in any filings required to be made with the
National Association of Securities Dealers, Inc.

          (r) Provide and cause to be maintained a transfer agent and registrar
for all Registrable Securities covered by such registration statement from and
after a date not later than the effective date of such Registration Statement.

          SECTION 2.3.  Holder's Obligations.
                        -------------------- 

          (a) Each holder of Registrable Securities agrees, by becoming a
transferee of any Registrable Securities, that no holder of Registrable
Securities shall be entitled to sell any of such Registrable Securities pursuant
to a Registration Statement or to receive a Prospectus relating thereto, unless
such holder has furnished the Company with the notice required pursuant to
Section 2.1(d) hereof (including the information required to accompany such
notice) and, promptly after the Company's request, such other information
regarding such holder and the distribution of such Registrable Securities as the
Company may from time to time reasonably request.  The Company may exclude from
such registration the Registrable Securities of any holder who does not furnish
such information provided above for so long as such information is not so
furnished.  Each holder of Registrable Securities as to which any Registration
Statement is being effected agrees promptly to furnish to the Company all
information required to be disclosed in order to make the information previously
furnished to the Company by such holder not misleading.  Any sale of any
Registrable Securities by any holder shall constitute a representation and
warranty by such holder that the information relating to such holder and its
plan of distribution is as set forth in the Prospectus delivered by such holder
in connection with such disposition, that such Prospectus does not as of the
time of such sale contain any untrue statement of a material fact relating to
such holder or its plan of distribution and that such Prospectus does not as of
the time of such sale omit to state any material fact relating to such holder or
its plan of distribution necessary to make the statements in such Prospectus, in
light of the circumstances under which they were made, not misleading.

          (b)   The Company agrees (x) that if any holder of Registrable
Securities shall send a written notice to the Company of an intended
distribution of 

                                       13
<PAGE>
 
Registrable Securities under the Shelf Registration pursuant to Section 2.1(d),
the Company shall not to sell, make any short sale of, loan, grant any option
for the purchase of, effect any public sale or distribution of or otherwise
dispose of its equity securities or securities convertible into or exchangeable
or exercisable for any of such securities during the period from first day of
the applicable Selling Period until the date that is 90 days after the date when
such holder shall have made such distribution of Registrable Securities under
the Shelf Registration, as the holder or managing underwriter (in the case of an
Underwritten Offering) shall advise the Company (provided that if the holder or
                                                 --------
managing underwriter shall fail to advise the Company of any such date prior to
the end of the applicable Selling Period, such period shall end on the last day
of the applicable Selling Period), except (i) as part of such registration, (ii)
pursuant to registrations on Form S-4 or S-8 or any successor or similar forms
thereto or (iii) as otherwise permitted by the managing underwriter of such
offering (if any), and (y) to use all reasonable efforts to cause each holder of
its equity securities or any securities convertible into or exchangeable or
exercisable for any of such securities, in each case purchased from the Company
at any time after the date of this Agreement (other than in a public offering)
to agree not to sell, make any short sale of, loan, grant any option for the
purchase of, effect any public sale or distribution of or otherwise dispose of
such securities during such period except as part of such underwritten
registration; provided that no holder of Registrable Securities included in any
              --------
underwritten registration shall be required to make any representations or
warranties to the Company or the underwriters other than representations and
warranties regarding such holder and such holder's intended method of
distribution.

          SECTION 2.4.  Registration Expenses.  All fees and expenses incident
                        ---------------------                                 
to the Company's performance of or compliance with this Agreement shall be borne
by the Company whether or not any of the Registration Statements become
effective.  Such fees and expenses shall include, without limitation, (i) all
registration and filing fees (including, without limitation, fees and expenses
(x) with respect to filings required to be made with the National Association of
Securities Dealers, Inc. and (y) of compliance with federal securities or Blue
Sky laws (including, without limitation, fees and disbursements of Special
Counsel in connection with Blue Sky qualifications of the Registrable Securities
laws of such jurisdictions as the Managing Underwriters, if any, or holders of a
majority of the Registrable Securities being sold may designate), (ii) printing
expenses (including, without limitation, expenses of printing certificates for
Registrable Securities in a form eligible for deposit with The Depositary Trust
Company and of printing prospectuses if the printing of prospectuses is
requested by the Special Counsel or the holders of a majority of the Registrable
Securities included in any Registration Statement), (iii) messenger, telephone
and delivery expenses, (iv) reasonable fees and disbursements of counsel for the
Company and the Special Counsel in connection with the Registration, (v) fees
and disbursements of all independent certified public accountants referred to in
Section 2.2(k)(iii) hereof (including the expenses of any special audit and
"comfort" letters required by or incident to such performance) and (vi)
Securities Act liability insurance obtained by the Company in its sole
discretion.  In 

                                       14
<PAGE>
 
addition, the Company shall pay its internal expenses (including, without
limitation, all salaries and expenses of its officers and employees performing
legal or accounting duties), the expense of any annual audit, the fees and
expenses incurred in connection with the listing of the securities to be
registered on any securities exchange on which similar securities issued by the
Company are then listed and the fees and expenses of any person, including
special experts, retained by the Company. Notwithstanding the provisions of this
Section 2.4, each seller of Registrable Securities shall pay all registration
expenses to the extent the Company is prohibited by applicable Blue Sky laws
from paying for or on behalf of such seller of Registrable Securities.

          SECTION 2.5.  Indemnification.
                        --------------- 

          (a) The Company agrees to indemnify and hold harmless each holder of
Registrable Securities whose Registrable Securities are covered by any
registration statement, its directors and officers and each other Person, if
any, who controls such holder within the meaning of the Securities Act, against
any losses, claims, damages or liabilities, joint or several, to which any such
indemnified party may become subject under the Securities Act or otherwise,
insofar as such losses, claims, damages or liabilities (or actions or
proceedings, whether commenced or threatened, in respect thereof) arise out of
or are based upon any untrue statement or alleged untrue statement of any
material fact contained in any registration statement under which such
securities were registered under the Securities Act, any preliminary prospectus,
final prospectus or summary prospectus contained therein, or any amendment or
supplement thereto, or any omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, and the Company will reimburse each such indemnified
party for any legal or any other expenses reasonably incurred by them in
connection with investigating or defending any such loss, claim, liability,
action or proceeding; provided that the Company shall not be liable in any such
                      --------                                                 
case to the extent that any such loss, claim, damage, liability (or action or
proceeding in respect thereof) or expense arises out of or is based upon an
untrue statement or alleged untrue statement or omission or alleged omission
made in such registration statement, any such preliminary prospectus, final
prospectus, summary prospectus, amendment or supplement in reliance upon and in
conformity with written information furnished to the Company by or on behalf of
such holder specifically for use in the preparation thereof.  In addition, the
Company shall indemnify any underwriter of such offering and each other Person,
if any, who controls any such underwriter within the meaning of the Securities
Act in substantially the same manner and to substantially the same extent as the
indemnity herein provided to each Indemnified Party.  Such indemnity shall
remain in full force and effect regardless of any investigation made by or on
behalf of such holder or any such director, officer, underwriter or controlling
person and shall survive the transfer of such securities by such holder.

          (b)   Each prospective seller of Registrable Securities hereunder
shall indemnify and hold harmless (in the same manner and to the same extent as
set forth in 

                                       15
<PAGE>
 
subdivision (a) of this Section 2.5) the Company, each director of the Company,
each officer of the Company and each other person, if any, who controls the
Company within the meaning of the Securities Act, with respect to any statement
or alleged statement in or omission or alleged omission from such registration
statement, any preliminary prospectus, final prospectus or summary prospectus
contained therein, or any amendment or supplement thereof, if such statement or
alleged statement or omission or alleged omission was made in reliance upon and
in conformity with written information furnished to the Company by or on behalf
of such seller specifically for use in the preparation of such registration
statement, preliminary prospectus, final prospectus, summary prospectus,
amendment or supplement. Any such indemnity shall remain in full force and
effect, regardless of any investigation made by or on behalf of the Company or
any such director, officer or controlling person and shall survive the transfer
of such securities by such seller. The amount payable by any prospective seller
of Registrable Securities with respect to the indemnification set forth in this
subsection (b) in connection with any offering of Registrable Securities will
not exceed the amount of the gain realized by such prospective seller pursuant
to such offering.

          (c)   Promptly after receipt by an indemnified party of notice of the
commencement of any action or proceeding involving a claim referred to in the
preceding subdivisions of this Section 2.5, such indemnified party will, if a
claim in respect thereof is to be made against an indemnifying party, give
written notice to the latter of the commencement of such action; provided that
                                                                 --------     
the failure of any indemnified party to give notice as provided herein shall not
relieve the indemnifying party of its obligations under the preceding
subdivisions of this Section 2.5, except to the extent that the indemnifying
party is actually prejudiced by such failure to give notice.  In case any such
action is brought against an indemnified party, unless in such indemnified
party's reasonable judgment a conflict of interest between such indemnified and
indemnifying parties may exist in respect of such claim, the indemnifying party
shall be entitled to participate in and to assume the defense thereof, jointly
with any other indemnifying party similarly notified, to the extent that the
indemnifying party may wish, with counsel reasonably satisfactory to such
indemnified party, and after notice from the indemnifying party to such
indemnified party of its election so to assume the defense thereof, the
indemnifying party shall not be liable to such indemnified party for any legal
or other expenses subsequently incurred by the latter in connection with the
defense thereof.  No indemnifying party shall, without the consent of the
indemnified party, consent to entry of any judgment or enter into any settlement
of any such action which does not include as an unconditional term thereof the
giving by the claimant or plaintiff to such indemnified party of a release from
all liability in respect to such claim or litigation.  No indemnified party
shall consent to entry of any judgment or enter into any settlement of any such
action the defense of which has been assumed by an indemnifying party without
the consent of such indemnifying party.

          (d)   If the indemnification provided for in the preceding
subdivisions of this Section 2.5 is unavailable to an indemnified party in
respect of any expense, loss, 

                                       16
<PAGE>
 
claim, damage or liability referred to therein, then each indemnifying party, in
lieu of indemnifying such indemnified party, shall contribute to the amount paid
or payable by such indemnified party as a result of such expense, loss, claim,
damage or liability (i) in such proportion as is appropriate to reflect the
relative benefits received by the Company on the one hand and the holder or
underwriter, as the case may be, on the other from the distribution of the
Registrable Securities or (ii) if the allocation provided by clause (i) above is
not permitted by applicable law, in such proportion as is appropriate to reflect
not only the relative benefits referred to in clause (i) above but also the
relative fault of the Company on the one hand and of the holder or underwriter,
as the case may be, on the other in connection with the statements or omissions
which resulted in such expense, loss, damage or liability, as well as any other
relevant equitable considerations. The relative benefits received by the Company
on the one hand and the holder or underwriter, as the case may be, on the other
in connection with the distribution of the Registrable Securities shall be
deemed to be in the same proportion as (i) the product of the Liquidation
Preference (as defined in Exhibit 1.7 of the Stock Agreement) multiplied by the
number of shares of Series B Preferred Stock into which the Conversion Shares
subject to the relevant distribution were converted, bears to (ii) the gain
realized by the selling holder or the underwriting discounts and commissions
received by the underwriter, as the case may be. The relative fault of the
Company on the one hand and of the holder or underwriter, as the case may be, on
the other shall be determined by reference to, among other things, whether the
untrue or alleged untrue statement of a material fact or omission to state a
material fact relates to information supplied by the Company, by the holder or
by the underwriter and parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission;
provided that the foregoing contribution agreement shall not inure to the
- --------
benefit of any indemnified party if indemnification would be unavailable to such
indemnified party by reason of the proviso contained in the first sentence of
subdivision (a) of this Section 2.5, and in no event shall the obligation of any
indemnifying party to contribute under this subdivision (d) exceed the amount
that such indemnifying party would have been obligated to pay by way of
indemnification if the indemnification provided for under subdivisions (a) or
(b) of this Section 2.5 had been available under the circumstances.

          The Company and the holders of Registrable Securities agree that it
would not be just and equitable if contribution pursuant to this subdivision (d)
were determined by pro rata allocation (even if the holders and any underwriters
                   --- ----                                                     
were treated as one entity for such purpose) or by any other method of
allocation that does not take account of the equitable considerations referred
to in the immediately preceding paragraph and subdivision (c) of this Section
2.5.  The amount paid or payable by an indemnified party as a result of the
losses, claims, damages and liabilities referred to in the immediately preceding
paragraph shall be deemed to include, subject to the limitations set forth
above, any legal or other expenses reasonably incurred by such indemnified party
in connection with investigating or defending any such action or claim.

                                       17
<PAGE>
 
          Notwithstanding the provisions of this subdivision (d), no holder of
Registrable Securities or underwriter shall be required to contribute any amount
in excess of the amount by which (i) in the case of any such holder, the gain
realized by such holder from the sale of Registrable Securities or (ii) in the
case of an underwriter, the total price at which the Registrable Securities
purchased by it and distributed to the public were offered to the public
exceeds, in any such case, the amount of any damages that such holder or
underwriter has otherwise been required to pay by reason of such untrue or
alleged untrue statement or omission.  No Person guilty of fraudulent
misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation.

          SECTION 2.6.  Rule 144; Rule 144A; Form S-3.
                        ----------------------------- 

          (a) The Company will file all reports required to be filed by it under
the Securities Act and the Exchange Act and the rules and regulations adopted by
the Commission thereunder and will take such further action as any holder of
Registrable Securities may reasonably request, all to the extent required from
time to time to enable such holder to sell Registrable Securities without
registration under the Securities Act within the limitation of the exemptions
provided by (a) Rule 144 under the Securities Act, as such Rule may be amended
from time to time, or (b) any similar rule or regulation hereafter adopted by
the Commission.  Upon the request of any holder of Registrable Securities, the
Company will deliver to such holder a written statement as to whether it has
complied with such requirements.  The Company further covenants that it will
cooperate with any holder of Registrable Securities and take such further
reasonable action as any holder of Registrable Securities may reasonably request
(including, without limitation, making such reasonable representations as any
such holder may reasonably request), all to the extent required from time to
time to enable such holder to sell Registrable Securities without registration
under the Securities Act within the limitation of the exemptions provided by
Rule 144 and Rule 144A under the Securities Act.

          (b)  For so long as any shares of Registrable Securities are
restricted securities within the meaning of Rule 144(a)(3) under the Securities
Act, the Company covenants and agrees that it shall, during any period in which
it is not subject to Section 13 or 15(d) of the Exchange Act, make available to
any holder of Registrable Securities in connection with the sale of such holder
Registrable Securities and any prospective purchaser of Registrable Securities
from such, in each case upon request, the information specified in, and meeting
the requirements of, Rule 144A(d)(4) under the Securities Act.

          (c) The Company shall file the reports required to be filed by it
under the Exchange Act and shall comply with all other eligibility requirements
for use of Form S-3 set forth in the instructions to Form S-3 (other than
Registration Requirement A.5).

                                       18
<PAGE>
 
                                  ARTICLE III

                                 MISCELLANEOUS

          SECTION 3.1.  Notices.  All notices and other communications provided
                        -------                                                
for hereunder shall be dated and in writing and shall be deemed to have been
given (i) if given by telecopy, when such telecopy is transmitted to the
telecopy number specified in this Section 3.1 and telephonic confirmation of
receipt thereof is obtained or (ii) if given by mail, prepaid overnight courier
or any other means, when received at the address specified in this Section 3.1
or when delivery at such address is refused.  Such notices shall be addressed to
the appropriate party to the attention of the person who executed this Agreement
at the address or telecopy number set forth under such party's signature below
(or to the attention of such other person or to such other address or telecopy
number as such party shall have furnished to each other party in accordance with
this Section 3.1).

          SECTION 3.2.  Binding Nature of Agreement.  This Agreement shall be
                        ---------------------------                          
binding upon and inure to the benefit of and be enforceable by the parties
hereto or their successors in interest, except as expressly otherwise provided
herein.

          SECTION 3.3.  Descriptive Headings.  The descriptive headings of the
                        --------------------                                  
several sections and paragraphs of this Agreement are inserted for reference
only and shall not limit or otherwise affect the meaning hereof.

          SECTION 3.4.  Specific Performance.  Without limiting the rights of
                        --------------------                                 
each party hereto to pursue all other legal and equitable rights available to
such party for the other parties' failure to perform their obligations under
this Agreement, the parties hereto acknowledge and agree that the remedy at law
for any failure to perform their obligations hereunder would be inadequate and
that each of them, respectively, shall be entitled to specific performance,
injunctive relief or other equitable remedies in the event of any such failure.

          SECTION 3.5.  GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND
                        -------------                                        
ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY,
THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE PRINCIPLES OF CONFLICTS
OF LAW.  EACH OF THE PARTIES HERETO HEREBY SUBMITS TO THE NONEXCLUSIVE
JURISDICTION OF THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF
NEW YORK AND OF ANY NEW YORK STATE COURT SITTING IN NEW YORK CITY FOR PURPOSES
OF ALL LEGAL PROCEEDINGS ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY.  EACH OF THE PARTIES HERETO IRREVOCABLY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY 

                                       19
<PAGE>
 
LAW, ANY OBJECTION WHICH SUCH PARTY MAY NOW OR HEREAFTER HAVE TO THE LAYING OF
THE VENUE OF ANY SUCH PROCEEDING BROUGHT IN SUCH A COURT AND ANY CLAIM THAT ANY
SUCH PROCEEDING BROUGHT IN SUCH A COURT HAS BEEN BROUGHT IN AN INCONVENIENT
FORUM. EACH OF THE PARTIES HERETO IRREVOCABLY CONSENTS TO SERVICE OF PROCESS IN
THE MANNER PROVIDED FOR NOTICES IN SECTION 3.1. NOTHING IN THIS AGREEMENT WILL
AFFECT THE RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER
MANNER PERMITTED BY LAW.

          SECTION 3.6.  WAIVER OF JURY TRIAL.  EACH OF PARTIES HERETO HEREBY
                        --------------------                                
IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
HEREBY.

          SECTION 3.7.  Counterparts.  This Agreement may be executed
                        ------------                                 
simultaneously in any number of counterparts, each of which shall be deemed an
original, but all such counterparts shall together constitute one and the same
instrument.

          SECTION 3.8.  Severability.  In the event that any one or more of the
                        ------------                                           
provisions contained herein, or the application thereof in any circumstances, is
held invalid, illegal or unenforceable in any respect for any reason, the
validity, legality and enforceability of any such provision in every other
respect and of the remaining provisions contained herein shall not be in any way
impaired thereby, it being intended that all of the rights and privileges of the
parties hereto shall be enforceable to the fullest extent permitted by law.

          SECTION 3.9.  Entire Agreement.  This Agreement is intended by the
                        ----------------                                    
parties hereto as a final and complete expression of their agreement and
understanding in respect to the subject matter contained herein.  This Agreement
supersedes all prior agreement and understandings, written or oral, between the
parties with respect to such subject matter.

          SECTION 3.10.  Amendment and Waiver.  Any provision of this Agreement
                         --------------------                                  
may be amended if, but only if, such amendment is in writing and is signed by
the Company and Series B Securityholders owning, or having Series B Preferred
Stock convertible into, at least a majority of shares of Common Stock either
issued or issuable upon the conversion of all outstanding shares of Series B
Preferred Stock, provided that no such amendment may adversely affect the rights
                 --------                                                       
of any Series B Securityholder unless signed by such Series B Securityholder.
Any provision may be waived if, but only if, such waiver is in writing and is
signed by the party or parties waiving such provision and for whose benefit such
provision is intended.

                                       20
<PAGE>
 
          SECTION 3.11.  No Third Party Beneficiaries.  Nothing in this
                         ----------------------------                  
Agreement shall convey any rights upon any person or entity which is not a party
or an assignee of a party to this Agreement.

          SECTION 3.12.  Effectiveness.  This Agreement shall become effective
                         -------------                                        
immediately at such time when (i) the Agent shall have received duly executed
counterparts hereof signed by the Company and each of the Banks (or, in the case
of any party as to which an executed counterpart thereof shall not have been
received, receipt by the Agent in form satisfactory to it of telegraphic, telex
or other written confirmation from such party of execution of a counterpart
hereof by such party) and (ii) the Effective Date under the Stock Agreement
shall occur.

          SECTION 3.13.  No Inconsistent Agreements.  The Company has not
                         --------------------------                      
entered into and will not enter into any registration rights agreement or
similar arrangements the performance by the Company of the terms of which would
in any manner conflict with, restrict or be inconsistent with the performance by
the Company of its obligations under this Agreement.

          IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and delivered as of the date first above written.


                         PERINI CORPORATION


                         By:  ______________________________
                              Name:
                              Title:


                         By:  ______________________________
                              Name:
                              Title:

                         Address for Notices:
                         --------------------
                         73 Mount Wayte Avenue
                         Framingham, MA  01701
                         Facsimile number: (508) 628-2960

                                       21
<PAGE>
 
                         PB CAPITAL PARTNERS, L.P.


                         By:  Richard C. Blum & Associates, L.P., its General
                              Partner

                              By:   Richard C. Blum & Associates, Inc., its
                                    General Partner

                                    By:  ________________________
                                         Name:
                                         Title:

                         Address for Notices:
                         --------------------
                         909 Montgomery Street
                         Suite 400
                         San Francisco, California 94133
                         Attn:      Alexander Dean
                         Facsimile Number:  415-434-3130


                         UNION LABOR LIFE INSURANCE COMPANY 
                         SEPARATE ACCOUNT P

                         By:  ____________________________________
                              Name:
                              Title:

                         Address for Notices:
                         --------------------
                         111 Massachusetts Avenue, N.W.
                         Washington, D.C.  20001
                         Attn:      Michael P. Steed
                         Facsimile Number:  202-682-7970

                                       22

<PAGE>
 
                                                                     EXHIBIT 6.3

                       FORM OF SECURITYHOLDERS AGREEMENT

          AGREEMENT dated as of __________ 199_ among PERINI CORPORATION, a
Massachusetts corporation (together with its successors, the "Company"), PB
                                                              -------
Capital Partners, L.P., a Delaware limited partnership, Separate Account P, an
account maintained by ULOCO, Inc., a ______________ corporation, The Common
Fund for Non-Profit Organizations, a New York corporation (collectively, the
"Series B Shareholders") and the holders of certain warrants to purchase shares
 ---------------------
of common stock of the Company listed on the signature pages hereof
(collectively, the "Initial Warrantholders").
                     ---------------------

          WHEREAS, in accordance with the terms and conditions of the Amended
and Restated Credit Agreement dated as ___________ __, 1996 among the Company,
the Initial Warrantholders and Morgan Guaranty Trust Company of New York, as
Agent, the Company has agreed to issue the Warrants (as defined therein) to the
lnitial Warrantholders;

          WHEREAS, the Company has agreed to provide the Initial Warrantholders
certain registration rights as set forth in the Warrantholders Rights Agreement
dated as of ________ __, 199_ (as amended, the "Warrantholders Rights
                                                ---------------------
Agreement") among the Company and the Initial Warrantholders;
- ---------

          WHEREAS, in accordance with the terms and conditions of the Stock
Purchase and Sale Agreement dated as of July 24, 1996, as amended, among Richard
C. Blum & Associates, L.P., PB Capital Partners, L.P. and the Company, the
Series B Shareholders have agreed to acquire certain shares of Series B
Cumulative Convertible Preferred Stock of the Company; and

          WHEREAS, the Company has agreed to provide the Series B Shareholders
certain registration rights as set forth in the Registration Rights Agreement
dated as of _________ __, 199_ among the Company and the Series B Shareholders;

          NOW THEREFORE the parties hereto agree as follows:
<PAGE>
 
                                   ARTICLE I

                                  DEFINITIONS

          SECTION 1.01. Definitions. Capitalized terms defined in the 
                        -----------
Warrantholders Rights Agreement and not otherwise defined herein have, as used
herein, the respective meanings provided for therein. The following additional
terms, as used herein, have the following respective meanings:

          "Conversion Shares" means (i) any Series B Shares, (ii) any shares of 
           -----------------
Common Stock or other securities issued or issuable upon the conversion of any
Series B Shares and (iii) any securities issued or issuable with respect to any
of such shares or other securities referred to in clause (i) or (ii) upon the
conversion thereof into other securities or by way of stock dividend or stock
split or in connection with a combination of shares, recapitalization, merger,
consolidation or other reorganization or otherwise; provided that any of such
                                                    --------
securities shall cease to be Conversion Shares when such securities shall have
(x) been disposed of pursuant to a Public Sale or (y) ceased to be outstanding.

          "Series B Shares" means shares of Series B Cumulative Convertible 
           ---------------
Preferred Stock of the Company.


                                  ARTICLE II

                           SECURITYHOLDERS AGREEMENT

          SECTION 2.01. Series B Lockup Periods.
                        -----------------------

          (a)  Each Warrant Securityholder who intends to distribute Registrable
Securities in an Underwritten Offering under a Shelf Registration pursuant to
Section 3.1(d) of the Warrantholders Rights Agreement and who desires to require
the holders of Conversion Shares to become subject to a Series B Lockup Period
in accordance with Section 2.01(b) shall, at the same time it gives written
notice to the Company pursuant to Section 3.1(d) of the Warrantholders Rights
Agreement, send a copy of such written notice to each holder of Conversion
Shares (each such notice, a "Series B Lockup Notice"). The Company agrees to
                             ---------------------- 
provide a list of all holders of Conversion Shares promptly to any Warrant
Securityholder who at any time requests such a list.

          (b)  Subject to Section 2.01(c), each Series B Shareholder, and each
other holder of Conversion Shares who agrees to be bound by (and entitled to the
benefits of) this Agreement in accordance with Section 2.03, agrees that if it
receives a Series B Lockup Notice, then except to the extent otherwise permitted
by the

                                       2
<PAGE>
 
managing underwriter of the proposed Underwritten Offering, it shall not sell,
make any short sale of, loan, grant any option for the purchase of, effect any
public sale or distribution of or otherwise dispose of any Conversion Shares or
any other equity securities of the Company or securities convertible into or
exchangeable or exercisable for any of such securities during the period (each,
a "Series B Lockup Period") beginning on the pricing date for the Underwritten
   ----------------------
Offering until the earlier of (i) the date that is 90 days after such pricing
date and (ii) the date when such Warrant Securityholder shall have completed its
sale of Registrable Securities under the Shelf Registration (as such Warrant
Securityholder or managing underwriter shall advise such holder of Conversion
Shares).

          (c)  The parties hereto agree that (i) no Series B Lockup Period shall
commence prior to the expiration of a period of 90 days after the last day of
any prior Series B Lockup Period (ii) there shall be no more than one Series B
Lockup Period during any period of twelve consecutive calendar months and (iii)
there shall be no more than two Series B Lockup Periods in total.

          SECTION 2.02. Opportunity for the Company and Holders of Conversion 
                        -----------------------------------------------------
Shares to Participate in Underwritten Offerings.  If one or more Warrant 
- -----------------------------------------------
Securityholders gives a written notice to the Company of an intended
distribution of Registrable Securities in an Underwritten Offering under a Shelf
Registration pursuant to Section 3.1(d) of the Warrantholders Rights Agreement
and if the managing underwriter for such Underwritten Offering advises such
Warrant Securityholders that, in its opinion, more Registrable Securities could
be sold in such Underwritten Offering than the number proposed to be sold by
such Warrant Securityholders (within a price range acceptable to such Warrant
Securityholders), then the Company and the holders of Conversion Shares shall be
entitled to include in such Underwritten Offering an aggregate number of shares
equal to such excess, to he allocated 50% to the shares proposed to be sold by
the Company and 50% to the shares proposed to be sold by holders of Conversion
Shares (or such other allocation as shall be mutually agreed between the Company
and such holders of Conversion Shares); provided that the Company and any holder
                                        --------
of Conversion Shares shall he entitled to include such shares in the
Underwritten Offering only if (i) it shall not cause any delay in the
commencement of the Selling Period for such Warrant Securityholders and (ii) in
the case of any holder of Conversion Shares, such holder shall have given prompt
notice to the Company and the managing underwriter, which notice shall include
any information with respect to such holder required to amend or supplement the
Registration Statement for the Underwritten Offering.

          SECTION 2.03.  Holders of Conversion Shares to be Bound by this 
                         ------------------------------------------------
Agreement.  Each Series B Shareholder, on behalf of itself and each subsequent 
- ---------
holder of Conversion Shares, agrees that it shall not transfer any Conversion
Shares to any Person, other than pursuant to a Public Sale, unless such Person
shall have agreed in a writing for the benefit of the parties hereto that such
Person, as a holder

                                       3
<PAGE>
 
of Conversion Shares, shall be bound by and be entitled to the benefits of all
of the provisions of this Agreement applicable to holders of Conversion Shares
(and upon such agreement such Person shall be entitled to such benefits).

          SECTION 2.04. Warrant Share Lockup Periods.
                        ----------------------------

          (a)  Each holder of Conversion Shares who intends to distribute
Registrable Securities in an Underwritten Offering under a Shelf Registration
pursuant to Section 2.1(d) of the Registration Rights Agreement and who desires
to require the Warrant Securityholders to become subject to a Warrant Share
Lockup Period in accordance with Section 2.04(b) shall, at the same time it
gives written notice to the Company pursuant to Section 2.1(d) of the
Registration Rights Agreement, send a copy of such written notice to each
Warrant Securityholder (each such notice, a "Warrant Share Lockup Notice"). The
                                             ---------------------------
Company agrees to provide a list of all Warrant Securityholders promptly to any
holder of Conversion Shares who at any time requests such a list.

          (b)  Subject to Section 2.04(c), each Initial Warrantholder, and each
other Warrant Securityholder who agrees to be bound by (and entitled to the
benefits of) this Agreement in accordance with Section 2.06, agrees that if it
receives a Warrant Share Lockup Notice, then except to the extent otherwise
permitted by the managing underwriter of the proposed Underwritten Offering, it
shall not sell, make any short sale of, loan, grant any option for the purchase
of, effect any public sale or distribution of or otherwise dispose of any
Warrant Shares or any other equity securities of the Company or securities
convertible into or exchangeable or exercisable for any of such securities
during the period (each, a "Warrant Share Lockup Period") beginning on the
                            ---------------------------
pricing date for the Underwritten Offering until the earlier of (i) the date
that is 90 days after such pricing date and (ii) the date when such holder of
Conversion Shares shall have completed its sale of Registrable Securities under
the Shelf Registration (as such holder or managing underwriter shall advise such
Warrant Securityholder).

          (c)  The parties hereto agree that (i) no Warrant Share Lockup Period
shall commence prior to the expiration of a period of 90 days after the last day
of any prior Warrant Share Lockup Period (ii) there shall be no more than one
Warrant Share Lockup Period during any period of twelve consecutive calendar
months and (iii) there shall be no more than two Warrant Share Lockup Periods.

          SECTION 2.05. Opportunity for the Company and Warrant Securityholders 
                        -------------------------------------------------------
to Participate in Underwritten Offerings.  If one or more holders of Conversion
- ----------------------------------------
Shares gives a written notice to the Company of an intended distribution of
Registrable Securities in an Underwritten Offering under a Shelf Registration
pursuant to Section 2.1(d) of the Registration Rights Agreement, and if the
managing underwriter for such Underwritten Offering advises such holders of
Conversion

                                       4
<PAGE>
 
Shares that, in its opinion, more Registrable Securities could be sold in such
Underwritten Offering than the number proposed to be sold by such holders
(within a price range acceptable to such holders), then the Company and the
Warrant Securityholders shall be entitled to include in such Underwritten
Offering an aggregate number of shares equal to such excess, to be allocated 50%
to the shares proposed to be sold by the Company and 50% to the shares proposed
to by sold by Warrant Securityholders (or such other allocation as shall be
mutually agreed between the Company and such Warrant Securityholders); provided
                                                                       --------
that the Company and any Warrant Securityholders shall be entitled to include
such shares in the Underwritten Offering only if (i) it shall not cause any
delay in the commencement of the Selling Period for such holders of Conversion
Shares and (ii) in the ease of any Warrant Securityholder, such Warrant
Securityholder shall have given prompt notice to the Company and the managing
underwriter, which notice shall include any information with respect to such
Warrant Securityholder required to amend or supplement the Registration
Statement for the Underwritten Offering.

          SECTION 2.06. Warrant Securityholders to be Bound by this Agreement. 
                        -----------------------------------------------------
Each Initial Warrantholder, on behalf of itself and each subsequent Warrant
Securityholder, agrees that it shall not transfer any Warrant or Warrant Shares
to any Person, other than pursuant to a Public Sale, unless such Person shall
have agreed in a writing for the benefit of the parties hereto that such Person,
as a Warrant Securityholder, shall be bound by and be entitled to the benefits
of all of the provisions of this Agreement applicable to Warrant Securityholders
(and upon such agreement such Person shall be entitled to such benefits).

                                  ARTICLE III

                                 MISCELLANEOUS

          SECTION 3.01. Notices.  All notices and other communications provided 
                        ------- 
for hereunder shall be dated and in writing and shall be deemed to have been
given (i) if given by telecopy, when such telecopy is transmitted to the
telecopy number specified in this Section 3.01 and telephonic confirmation of
receipt thereof is obtained or (ii) if given by mail, prepaid overnight courier
or any other means, when received at the address specified in this Section 3.01
or when delivery at such address is refused. Such notices shall be addressed to
the appropriate party to the attention of the person who executed this Agreement
at the address or telecopy number set forth under such party's signature below
(or to the attention of such other person or to such other address or telecopy
number as such party shall have furnished to each other party in accordance with
this Section 3.01).

                                       5
<PAGE>
 
          SECTION 3.02. Binding Nature of Agreement.  This Agreement shall be 
                        ---------------------------
binding upon and inure to the benefit of and be enforceable by the parties 
hereto and their respective successors and assigns.

          SECTION 3.03. Descriptive Headings.  The descriptive headings of the 
                        --------------------
several sections and paragraphs of this Agreement are inserted for reference
only and shall not limit or otherwise affect the meaning hereof.

          SECTION 3.04. Specific Performance. Without limiting the rights of 
                        --------------------
each party hereto to pursue all other legal and equitable rights available to
such party for the other parties' failure to perform their obligations under
this Agreement, the parties hereto acknowledge and agree that the remedy at law
for any failure to perform their obligations hereunder would be inadequate and
that each of them, respectively, shall be entitled to specific performance,
injunctive relief or other equitable remedies in the event of any such failure.

          SECTION 3.05. GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND 
                        -------------
ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY,
THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE PRINCIPLES OF
CONFLICTS OF LAW. EACH OF THE PARTIES HERETO HEREBY SUBMITS TO THE NONEXCLUSIVE
JURISDICTION OF THE UNITED STATES DISTRICT COURT FOR THE SOUTHERN DISTRICT OF
NEW YORK AND OF ANY NEW YORK STATE COURT SITTING IN NEW YORK CITY FOR PURPOSES
OF ALL LEGAL PROCEEDINGS ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE
TRANSACTIONS CONTEMPLATED HEREBY. EACH OF THE PARTIES HERETO IRREVOCABLY WAIVES,
TO THE FULLEST EXTENT PERMITTED BY LAW, ANY OBJECTION WHICH SUCH PARTY MAY NOW
OR HEREAFTER HAVE TO THE LAYING OF THE VENUE OF ANY SUCH PROCEEDING BROUGHT IN
SUCH A COURT AND ANY CLAIM THAT ANY SUCH PROCEEDING BROUGHT IN SUCH A COURT HAS
BEEN BROUGHT IN AN INCONVENIENT FORUM. EACH OF THE PARTIES HERETO IRREVOCABLY
CONSENTS TO SERVICE OF PROCESS IN THE MANNER PROVIDED FOR NOTICES IN SECTION
3.01. NOTHING IN THIS AGREEMENT WILL AFFECT THE RIGHT OF ANY PARTY TO THIS
AGREEMENT TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW.

          SECTION 3.06. WAIVER OF JURY TRIAL.  EACH OF PARTIES HERETO HEREBY 
                        --------------------
IRREVOCABLY WAIVES ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING
ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
HEREBY.

                                       6
<PAGE>
 
          SECTION 3.07. Counterparts.  This Agreement may be executed 
                        ------------
simultaneously in any number of counterparts, each of which shall be deemed an
original, but all such counterparts shall together constitute one and the same
instrument.

          SECTION 3.08. Severability. In the event that any one or more of the
                        ------------
provisions contained herein, or the application thereof in any circumstances, is
held invalid, illegal or unenforceable in any respect for any reason, the
validity, legality and enforceability of any such provision in every other
respect and of the remaining provisions contained herein shall not be in any way
impaired thereby, it being intended that all of the rights and privileges of the
parties hereto shall be enforceable to the fullest extent permitted by law.

          SECTION 3.09. Entire Agreement.  This Agreement is intended by the 
                        ----------------
parties hereto as a final and complete expression of their agreement and
understanding in respect to the subject matter contained herein. This Agreement
supersedes all prior agreement and understandings, written or oral, between the
parties with respect to such subject matter.

          SECTION 3.10. Amendment and Waiver.  Any provision of this Agreement 
                        --------------------
may be amended if, but only if, such amendment is in writing and is signed by
(i) the Company, (ii) holders owning, or having Series B Shares convertible
into, at least a majority of shares of Common Stock either issued or issuable
upon the conversion of all outstanding Series B Shares (provided that no such
                                                        --------
amendment may adversely affect the rights of any such holder unless signed by
such holder) and (iii) Holders owning, or having Warrants exercisable for, at
least a majority of shares of Common Stock either issued or issuable upon the
exercise of all outstanding Warrants (provided that no such amendment may
                                      --------
adversely affect the rights of any Holder unless signed by such Holder).  Any
provision may be waived if, but only if, such waiver is in writing and is signed
by the party or parties waiving such provision and for whose benefit such
provision is intended.

          SECTION 3.11. No Third Party Beneficiaries.  Nothing in this 
                        ----------------------------
Agreement shall convey any rights upon any person or entity which is not a party
or an assignee of a party to this Agreement.

          SECTION 3.12. Effectiveness.  This Agreement shall become effective 
                        -------------
immediately at such time when (i) the Agent shall have received duly executed
counterparts hereof signed by the Company and each of the Banks (or, in the case
of any party as to which an executed counterpart thereof shall not have been
received, receipt by the Agent in form satisfactory to it of telegraphic, telex
or other written confirmation from such party of execution of a counterpart
hereof by such party) and (ii) the Effective Date under the Credit Agreement
shall occur.

                                       7
<PAGE>
 
          IN WITNESS WHEREOF, the parties have caused this Agreement to be
executed and delivered as of the date first above written.


                                       PERINI CORPORATION

                                       By: ____________________________________
                                           Name:  
                                           Title: 

                                       By: ____________________________________
                                           Name: 
                                           Title: 

                                       Address for Notices:
                                       --------------------
                                       73 Mount Wayte Avenue
                                       Framingham, MA 01701
                                       Facsimile number: (508) 628-2960



                                       MORGAN GUARANTY TRUST COMPANY OF NEW YORK



                                       By: ____________________________________
                                           Name: 
                                           Title:


                                       Address for Notices:
                                       --------------------
                                       60 Wall Street
                                       New York, NY 10260
                                       Facsimile number: (212) 648-5005

                                       8
<PAGE>
 
                                       FLEET NATIONAL BANK
                                                                             
                                                                             
                                       By: ____________________________________
                                           Name:
                                           Title:
                                                                             
                                       Address for Notices:                   
                                       --------------------                   
                                       Mail Stop: RI OP T05A 
                                       40 Westminster Street                  
                                       P.O. Box 366                           
                                       Providence, RI 02901-0366               
                                       Facsimile number: (401) 459-4962       


                                       BANK OF AMERICA NATIONAL TRUST AND     
                                       SAVINGS ASSOCIATION                    
                                                                             
                                      
                                       By: ____________________________________
                                           Name: 
                                           Title: 
                                                                             
                                       Address for Notices:                   
                                       --------------------                   
                                       355 Madison Avenue                     
                                       New York, NY 10017                     
                                       Facsimile number: (212) 503-7771       

                                                                             
                                       BAYBANK. N.A.                          
                                                                             
                                       By:_____________________________________
                                          Name: 
                                          Title:                           
                                                                             
                                       Address for Notices:                   
                                       --------------------                   
                                       c/o The First National Bank of Boston  
                                       Mail Stop 01-31-03                     
                                       P.O. Box 2016                          
                                       100 Federal Street                     
                                       Boston, MA 02106-2016                  
                                       Facsimile number: (617) 434-1508        

                                       9
<PAGE>
 
                                       COMERICA BANK                   
                                                                      
                                       By: ____________________________________
                                           Name:                       
                                           Title:                      
                                                                      
                                       Address for Notices:            
                                       --------------------            
                                       One Detroit Center              
                                       5OO Woodward Avenue             
                                       Detroit, MI 48226               
                                       Facsimile number: (313) 222-5706

                                                                      
                                       HARRIS TRUST & SAVINGS BANK     
                                                                      
                                       By: ____________________________________
                                           Name:                       
                                           Title:                      
                                                                      
                                       Address for Notices:            
                                       --------------------            
                                       111 West Monroe                 
                                       P.O. Box 755                    
                                       Chicago, IL 60690               
                                       Facsimile number: (312) 765-1724

                                                                      
                                       SSB INVESTMENTS. INC.           


                                       By: ____________________________________
                                           Name:
                                           Title:

                                       Address for Notices:            
                                       --------------------            
                                       225 Franklin                    
                                       Boston, MA 02110-2804           
                                       Facsimile number: (617) 664-3708 
 
                                       10
<PAGE>
 
                                  PB CAPITAL PARTNERS, L.P.   
                                                                             
                                       By:  RICHARD C. BLUM & ASSOCIATES, L.P.,
                                            its General Partner 
                                                                             
                                       By:  RICHARD C. BLUM & ASSOCIATES, INC., 
                                            its General Partners                
                                                                             
                                       By: __________________________________  
                                           Name:                               
                                           Title:                              
                                                                             
                                  Address for Notices:                        
                                  --------------------                        
                                  909 Montgomery Street                       
                                  Suite 400                                   
                                  San Francisco, CA 94133-4625                
                                                                             

                                  SEPARATE ACCOUNT P                          
                                                                             
                                  By: _________________________________________
                                      Name:                                   
                                      Title:                                  
                                                                             
                                  Address for Notices:                        
                                  --------------------                        
                                                                             
                                  --------------------                        
                                                                             
                                  --------------------                        
                                                                             
                                  --------------------                         

                                       11
<PAGE>
 
                                 THE COMMON FUND FOR NON-PROFIT 
                                 CORPORATIONS                   
                                                                
                                 By: ___________________________
                                     Name:                      
                                     Title:                     
                                                                
                                 Address for Notices:           
                                 --------------------           
                                                                
                                 --------------------           
                                                                
                                 --------------------           
                                                                
                                 --------------------            

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