GENENTECH INC
PRE13E3/A, 1995-09-08
MEDICINAL CHEMICALS & BOTANICAL PRODUCTS
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<PAGE>   1
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                 SCHEDULE 13E-3
   
                                AMENDMENT NO. 1
    
 
                        RULE 13E-3 TRANSACTION STATEMENT
       (Pursuant to Section 13(e) of the Securities Exchange Act of 1934)
 
                                GENENTECH, INC.
                                (Name of Issuer)
 
                                GENENTECH, INC.
                              ROCHE HOLDINGS, INC.
                       (Name of Persons Filing Statement)
 
   
<TABLE>
<S>                                                     <C>
              COMMON STOCK, $.02 PAR VALUE                                     368710208
             (Title of Class of Securities)                      (CUSIP Number of Class of Securities)
</TABLE>
    
 
                            ------------------------
 
<TABLE>
<S>                                                     <C>
                JOHN P. MCLAUGHLIN, ESQ.
          SENIOR VICE PRESIDENT AND SECRETARY
                    GENENTECH, INC.                                       ROCHE HOLDINGS, INC.
             460 POINT SAN BRUNO BOULEVARD                                15 EAST NORTH STREET
         SOUTH SAN FRANCISCO, CALIFORNIA 94080                           DOVER, DELAWARE 19901
                     (415) 225-1000
</TABLE>
 
(Name, Address and Telephone Number of Persons Authorized to Receive Notices and
           Communications on Behalf of the Persons Filing Statement)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                     <C>
                RICHARD D. KATCHER, ESQ.                                 PETER R. DOUGLAS, ESQ.
             WACHTELL, LIPTON, ROSEN & KATZ                              DAVIS POLK & WARDWELL
                  51 WEST 52ND STREET                                     450 LEXINGTON AVENUE
                NEW YORK, NEW YORK 10019                                NEW YORK, NEW YORK 10017
                     (212) 403-1000                                          (212) 450-4000
</TABLE>
 
   
                               SEPTEMBER 8, 1995
    
   (Date Proxy Statement First Published, Sent or Given to Security Holders)
 
     This statement is filed in connection with (check the appropriate box):
 
     a. /X/ The filing of solicitation materials or an information statement
            subject to Regulation 14A, Regulation 14C, or Rule 13e-3(c) under
            the Securities Exchange Act of 1934.
 
     b. / / The filing of a registration statement under the Securities Act of
            1933.
 
     c. / / A tender offer.
 
     d. / / None of the above.
 
     Check the following box if the soliciting materials or information
statement referred to in checking box (a) are preliminary copies.  /X/
 
                           CALCULATION OF FILING FEE
 
   
<TABLE>
<S>                                                     <C>
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
                 TRANSACTION VALUATION                                    AMOUNT OF FILING FEE
----------------------------------------------------------------------------------------------------------------
                    $2,976,632,664*                                             $595,327
----------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------
</TABLE>
    
 
   
* For purposes of calculation of fee only, this amount is based upon the sum of
  (A) the product of (i) 57,198,521, the number of outstanding shares of
  Redeemable Common Stock, par value $.02 per share ("Redeemable Common Stock")
  of Genentech outstanding on June 2, 1995 (the original filing date of this
  Schedule 13E-3), assuming the exercise of all Genentech warrants and stock
  options (whether or not currently exercisable), not including shares of
  Redeemable Common Stock then held by Roche Holdings, Inc. and its affiliates,
  and (ii) $48.1875, the average of the high and low sales price of a share of
  Redeemable Common Stock quoted on the New York Stock Exchange on May 26, 1995
  as reported in published financial sources, and (B) the product of (i)
  4,670,282 (the incremental number of outstanding shares for which a fee was
  not paid in connection with the initial filing of this Schedule 13E-3 on June
  2, 1995, which number assumes the exercise of all warrants and stock options,
  whether or not currently exercisable) and (ii) $47.1875 (the average of the
  high and low sales price of the Common Stock into which the Redeemable Common
  Stock was converted automatically after June 30, 1995 on the New York Stock
  Exchange on August 31, 1995). In accordance with Rule 0-11 under the
  Securities Exchange Act of 1934, the filing fee is determined by multiplying
  the amount calculated pursuant to the preceding sentence by 1/50th of one
  percent.
    
 
/X/ Check box if any part of the fee is offset as provided by Rule 0-11(a)(2).
Amount Previously Paid: $555,000
                         Filing Party: Genentech, Inc.
Form or Registration No.: Schedule 14A
Date Filed: June 2, 1995
   
and
    
   
Amount Previously Paid: $75,993
    
   
                         Filing Party: Genentech, Inc.
    
   
Form or Registration No.: Form S-4, No. 33-59949
    
   
Date Filed: September 8, 1995
    
<PAGE>   2
 
   
     Genentech, Inc., a Delaware corporation ("Genentech") and Roche Holdings,
Inc., a Delaware corporation ("Roche") hereby amend and supplement their Rule
13e-3 Transaction Statement on Schedule 13E-3 (as amended, the "Statement"). The
Statement relates to a proposed Agreement and Plan of Merger dated as of May 23,
1995, as amended and restated (the "Merger Agreement") among Genentech, Roche
and HLR (U.S.) II, Inc. ("Merger Sub"), a Delaware corporation and a
wholly-owned subsidiary of Roche. The purpose of such Merger Agreement and
resulting conversion of Genentech Common Stock into Genentech Special Common
Stock is to, among other matters, (i) extend by four years the period during
which the publicly traded stock of Genentech is subject to redemption by
Genentech at the option of Roche, with such redemption during such four-year
period being at specified prices per share ranging from $62.50 during the
quarter ending December 31, 1995 increasing $1.25 per share for the next six
quarters and $1.50 per share for the next eight quarters to $82.00 during the
quarter ending June 30, 1999 (the "Call Rights"), and (ii) provide holders
thereof the right to require Genentech to redeem all or a portion (at the
election of the holder) of their shares of such stock for a 30-business-day
period beginning in July 1999 (unless such right is accelerated following the
occurrence of certain insolvency events of Genentech) at a price of $60.00 per
share in the event that Roche does not cause the exercise of the Call Rights.
(Upon final court approval of certain shareholder class action and derivative
complaints pending in the Court of Chancery of the State of Delaware in and for
New Castle County consolidated under the caption In re Genentech, Inc.
Shareholders Litigation, Cons. C.A. No. 14265, each of the redemption prices set
forth in clause (i) of the preceding sentence will be increased by $0.50 per
share of Special Common Stock, resulting in a final price of $82.50. If such
final court approval occurs after payment of the applicable redemption price
described above, such $0.50 increase will be promptly thereafter paid by
Genentech for each share of such publicly traded stock for which payment of the
redemption price had previously been paid.) This Statement is intended to
satisfy the reporting requirements of Section 13(e) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"). Revised preliminary proxy
materials of Genentech (the "Proxy Statement/Prospectus") were filed by
Genentech with the Securities and Exchange Commission (the "Commission")
immediately prior to the filing of this Statement, as part of Amendment No. 1 to
a Registration Statement on Form S-4.
    
 
   
     The cross reference sheet below is being supplied pursuant to General
Instruction F to Schedule 13E-3 and shows the location in the Proxy
Statement/Prospectus of the information required to be included in response to
the items of this Statement. The information in the Proxy Statement/Prospectus,
including all exhibits thereto, is hereby expressly incorporated herein by
reference and the responses to each item in this Statement are qualified in
their entirety by the information contained in the Proxy Statement/Prospectus.
    
<PAGE>   3
 
                             CROSS-REFERENCE SHEET
 
<TABLE>
<CAPTION>
   ITEM IN
SCHEDULE 13E-3                                    WHERE LOCATED IN THE PROXY STATEMENT/PROSPECTUS
--------------   -----------------------------------------------------------------------------------------------------------------
<S>              <C>
Item 1(a)        Cover Page; BUSINESS OF GENENTECH
Item 1(b)        GENERAL INFORMATION -- Record Date; Voting Rights; Proxies
</TABLE>
 
   
<TABLE>
<S>              <C>
Item 1(c)-(d)    MARKET PRICES OF AND DIVIDENDS ON THE REDEEMABLE COMMON STOCK AND THE COMMON STOCK
Item 1(e)        **
Item 1(f)        CERTAIN INFORMATION CONCERNING ROCHE AND ROCHE HOLDING; PRINCIPAL STOCKHOLDERS OF GENENTECH; CERTAIN INFORMATION
                 CONCERNING THE DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND ROCHE HOLDING
Item 2(a)-(g)    Cover Page; BUSINESS OF GENENTECH; CERTAIN INFORMATION CONCERNING ROCHE AND ROCHE HOLDING; CERTAIN INFORMATION
                 CONCERNING DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY; CERTAIN INFORMATION CONCERNING THE DIRECTORS AND
                 EXECUTIVE OFFICERS OF ROCHE AND ROCHE HOLDING
Item 3(a)(1)     CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
Item 3(a)(2)     THE PROPOSED TRANSACTIONS -- Background of the Proposed Transactions; CERTAIN INFORMATION CONCERNING THE
                 DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND ROCHE HOLDING
Item 3(b)        THE PROPOSED TRANSACTIONS -- Background of the Proposed Transactions
Item 4(a)        Pages i-ii; SUMMARY AND SPECIAL FACTORS -- Terms of the Proposed Transactions; THE PROPOSED TRANSACTIONS --
                 Purpose and Structure of the Transactions; THE MERGER AGREEMENT; THE CHARTER AMENDMENT; DESCRIPTION OF THE
                 SPECIAL COMMON STOCK; ARTICLE ELEVENTH OF THE CERTIFICATE OF INCORPORATION; THE AMENDED GOVERNANCE AGREEMENT;
                 GUARANTY OF ROCHE HOLDING; THE LICENSING AGREEMENT
Item 4(b)        Pages i-ii; SUMMARY AND SPECIAL FACTORS -- Terms of the Proposed Transactions; THE PROPOSED TRANSACTIONS --
                 Purpose and Structure of the Transactions; THE MERGER AGREEMENT; THE CHARTER AMENDMENT; DESCRIPTION OF THE
                 SPECIAL COMMON STOCK; ARTICLE ELEVENTH OF THE CERTIFICATE OF INCORPORATION; THE AMENDED GOVERNANCE AGREEMENT;
                 GUARANTY OF ROCHE HOLDING; THE LICENSING AGREEMENT
Item 5(a)-(f)    SUMMARY AND SPECIAL FACTORS; THE MERGER AGREEMENT; THE CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON
                 STOCK; THE AMENDED GOVERNANCE AGREEMENT; GUARANTY OF ROCHE HOLDING; THE LICENSING AGREEMENT; CONDUCT OF
                 GENENTECH'S BUSINESS AFTER COMPLETION OF THE PROPOSED TRANSACTIONS; ROCHE'S PLANS WITH RESPECT TO GENENTECH;
                 INCORPORATION OF DOCUMENTS BY REFERENCE; THE PROPOSED TRANSACTIONS -- Interests of Certain Persons in the
                 Proposed Transactions
Item 5(g)        **
Item 6(a)-(b)    THE PROPOSED TRANSACTIONS -- Source of Funds; Expenses; GUARANTY OF ROCHE HOLDING; CERTAIN INFORMATION CONCERNING
                 ROCHE AND ROCHE HOLDING
Item 6(c)-(d)    **
Item 7(a)-(c)    SUMMARY AND SPECIAL FACTORS; THE PROPOSED TRANSACTIONS -- Background of the Proposed Transactions; -- Purpose and
                 Structure of the Transactions
Item 7(d)        SUMMARY AND SPECIAL FACTORS; THE PROPOSED TRANSACTIONS -- Interests of Certain Persons in the Proposed
                 Transactions; THE MERGER AGREEMENT; THE CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK; THE AMENDED
                 GOVERNANCE AGREEMENT; GUARANTY OF ROCHE HOLDING; THE LICENSING AGREEMENT; CERTAIN FEDERAL INCOME TAX
                 CONSIDERATIONS
Item 8(a)-(c)    SUMMARY AND SPECIAL FACTORS; THE PROPOSED TRANSACTIONS -- Recommendation of the Board of Directors; Fairness of
                 the Transaction; -- Opinions of Financial Advisors; MARKET PRICES OF AND DIVIDENDS ON THE REDEEMABLE COMMON STOCK
                 AND THE COMMON STOCK; THE CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK; GENERAL
                 INFORMATION -- Required Vote
Item 8(d)        *
Item 8(e)        SUMMARY AND SPECIAL FACTORS; THE PROPOSED TRANSACTIONS -- Recommendation of the Board of Directors; Fairness of
                 the Transaction
Item 8(f)        **
Item 9(a)-(c)    SUMMARY AND SPECIAL FACTORS; and THE PROPOSED TRANSACTIONS -- Opinions of Financial Advisors
Item 10(a)-(b)   GENERAL INFORMATION -- Required Vote; PRINCIPAL STOCKHOLDERS OF GENENTECH; SECURITY OWNERSHIP OF MANAGEMENT;
                 CERTAIN INFORMATION CONCERNING DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY; CERTAIN INFORMATION CONCERNING
                 THE DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND ROCHE HOLDING
Item 11          SUMMARY AND SPECIAL FACTORS; CONDUCT OF GENENTECH'S BUSINESS AFTER COMPLETION OF THE PROPOSED TRANSACTIONS;
                 ROCHE'S PLANS WITH RESPECT TO GENENTECH; THE MERGER AGREEMENT; THE CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL
                 COMMON STOCK; THE AMENDED GOVERNANCE AGREEMENT; GUARANTY OF ROCHE HOLDING
Item 12(a)-(b)   THE PROPOSED TRANSACTIONS -- Recommendation of the Board of Directors; Fairness of the Transaction; -- Opinions
                 of Financial Advisors; THE MERGER AGREEMENT
Item 13(a)       GENERAL INFORMATION -- No Appraisal Rights
Item 13(b)       **
Item 13(c)       **
Item 14          SELECTED HISTORICAL FINANCIAL DATA; INCORPORATION OF DOCUMENTS BY REFERENCE
Item 15(a)       GENERAL INFORMATION -- Solicitation of Proxies
Item 15(b)       GENERAL INFORMATION -- Solicitation of Proxies; THE PROPOSED TRANSACTIONS -- Source of Funds; Expenses
Item 16          **
Item 17(a)       *
Item 17(b)       Annex B and Annex C
Item 17(c)       Annex A
Item 17(d)       **
Item 17(e)       **
Item 17(f)       **
</TABLE>
    
 
---------------
   
 * The information requested by this item is not required to be included in the
   Proxy Statement/Prospectus.
    
 
** The Item is inapplicable or the answer thereto is in the negative.
 
ITEM 1.  ISSUER AND CLASS OF SECURITIES SUBJECT TO THE TRANSACTION.
 
   
        (a)  The information set forth on the cover page of, and "BUSINESS OF
    GENENTECH" in the Proxy Statement/Prospectus is incorporated herein by
    reference.
    
 
                                        2
<PAGE>   4
 
        (b)  The information set forth under "GENERAL INFORMATION -- Record
    Date; Voting Rights; Proxies" in the Proxy Statement/Prospectus is
    incorporated herein by reference.
 
   
        (c)-(d)  The information set forth in the Proxy Statement/Prospectus
    under "MARKET PRICES OF AND DIVIDENDS ON THE REDEEMABLE COMMON STOCK AND THE
    COMMON STOCK" is incorporated herein by reference.
    
 
        (e)  Not applicable.
 
   
        (f)  The information set forth under "CERTAIN INFORMATION CONCERNING
    ROCHE AND ROCHE HOLDING", "PRINCIPAL STOCKHOLDERS OF GENENTECH" and "CERTAIN
    INFORMATION CONCERNING THE DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND
    ROCHE HOLDING" is incorporated herein by reference.
    
 
ITEM 2.  IDENTITY AND BACKGROUND.
 
    Genentech, a person filing this statement, is the issuer of the class of
equity securities which is the subject of the Rule 13e-3 transaction.
 
   
        (a)-(g)  Additionally, the information set forth on the cover page of
    the Proxy Statement/Prospectus and under "BUSINESS OF GENENTECH," "CERTAIN
    INFORMATION CONCERNING ROCHE AND ROCHE HOLDING," "CERTAIN INFORMATION
    CONCERNING DIRECTORS AND EXECUTIVE OFFICERS OF THE COMPANY" and "CERTAIN
    INFORMATION CONCERNING THE DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND
    ROCHE HOLDING" is incorporated herein by reference.
    
 
ITEM 3.  PAST CONTACTS, TRANSACTIONS OR NEGOTIATIONS.
 
        (a)(1)  The information set forth in the Proxy Statement/Prospectus
    under "CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS" is incorporated
    herein by reference.
 
         (2)  The information set forth in the Proxy Statement/Prospectus under
       "THE PROPOSED TRANSACTIONS -- Background of the Proposed Transactions"
       and "CERTAIN INFORMATION CONCERNING THE DIRECTORS AND EXECUTIVE OFFICERS
       OF ROCHE AND ROCHE HOLDING" is incorporated herein by reference.
 
        (b)  The information set forth in the Proxy Statement/Prospectus under
    "THE PROPOSED TRANSACTIONS -- Background of the Proposed Transactions" is
    incorporated herein by reference.
 
ITEM 4.  TERMS OF THE TRANSACTION.
 
        (a)  The information set forth in the Proxy Statement/Prospectus on
    pages i-ii and under the captions "SUMMARY AND SPECIAL FACTORS -- Terms of
    the Proposed Transactions", "THE PROPOSED TRANSACTIONS -- Purpose and
    Structure of the Transactions", "THE MERGER AGREEMENT", "THE CHARTER
    AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK", "ARTICLE ELEVENTH OF
    THE CERTIFICATE OF INCORPORATION", "THE AMENDED GOVERNANCE AGREEMENT",
    "GUARANTY OF ROCHE HOLDING", and "THE LICENSING AGREEMENT" is incorporated
    herein by reference.
 
        (b)  The information set forth in the Proxy Statement/Prospectus on
    pages i-ii and under the captions "SUMMARY AND SPECIAL FACTORS -- Terms of
    the Proposed Transactions", "THE PROPOSED TRANSACTIONS -- Purpose and
    Structure of the Transactions", "THE MERGER AGREEMENT", "THE CHARTER
    AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK", "ARTICLE ELEVENTH OF
    THE CERTIFICATE OF INCORPORATION", "THE AMENDED GOVERNANCE AGREEMENT",
    "GUARANTY OF ROCHE HOLDING", and "THE LICENSING AGREEMENT" is incorporated
    herein by reference.
 
ITEM 5.  PLANS OR PROPOSALS OF THE ISSUER OF AFFILIATE.
 
        (a)-(f)  The information set forth in the Proxy Statement/Prospectus
    under the captions "SUMMARY AND SPECIAL FACTORS", "THE MERGER AGREEMENT",
    "THE CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK", "THE
    AMENDED GOVERNANCE AGREEMENT", "GUARANTY OF ROCHE HOLDING", "THE LICENSING
    AGREEMENT", "CONDUCT OF GENENTECH'S BUSINESS AFTER COMPLETION OF THE
    PROPOSED TRANSACTIONS; ROCHE'S PLANS WITH RESPECT TO GENENTECH",
    "INCORPORATION OF DOCUMENTS BY REFERENCE" and "THE PROPOSED
    TRANSACTIONS -- Interests of Certain Persons in the Proposed Transactions"
    is incorporated herein by reference.
 
        (g) Not applicable.
 
ITEM 6.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.
 
   
        (a)-(b) The information set forth in the Proxy Statement/Prospectus
    under "THE PROPOSED TRANSACTIONS -- Source of Funds; Expenses", "GUARANTY OF
    ROCHE HOLDING" and "CERTAIN INFORMATION CONCERNING ROCHE AND ROCHE HOLDING"
    is incorporated herein by reference.
    
 
        (c)-(d) Not applicable.
 
ITEM 7.  PURPOSES, ALTERNATIVES, REASONS AND EFFECTS.
 
        (a)-(c) The information set forth in the Proxy Statement/Prospectus
    under "SUMMARY AND SPECIAL FACTORS"; "THE PROPOSED
    TRANSACTIONS -- Background of the Proposed Transactions", and "-- Purpose
    and Structure of the Transactions" is incorporated herein by reference.
 
   
        (d) The information set forth in the Proxy Statement/Prospectus under
    "SUMMARY AND SPECIAL FACTORS", "THE PROPOSED TRANSACTIONS -- Interests of
    Certain Persons in the Proposed Transactions", "THE MERGER AGREEMENT", "THE
    CHARTER AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK", "THE AMENDED
    GOVERNANCE AGREEMENT", "GUARANTY OF ROCHE HOLDING", "THE LICENSING
    AGREEMENT", and "CERTAIN FEDERAL INCOME TAX CONSIDERATIONS AND ACCOUNTING
    TREATMENT" is incorporated herein by reference.
    
 
ITEM 8.  FAIRNESS OF THE TRANSACTION.
 
   
        (a)-(c) The information set forth in the Proxy Statement/Prospectus
    under "SUMMARY AND SPECIAL FACTORS", "THE PROPOSED
    TRANSACTIONS -- Recommendation of the Board of Directors; Fairness of the
    Transaction" and "-- Opinions of Financial Advisors", "MARKET PRICES OF AND
    DIVIDENDS ON THE REDEEMABLE COMMON STOCK AND THE COMMON STOCK", "THE CHARTER
    AMENDMENT; DESCRIPTION OF THE SPECIAL COMMON STOCK" and "GENERAL
    INFORMATION -- Required Vote" is incorporated herein by reference.
    
 
        (d) No representative was hired solely on the behalf of unaffiliated
    security holders.
 
        (e) The information set forth in the Proxy Statement/Prospectus under
    "SUMMARY AND SPECIAL FACTORS" and "THE PROPOSED
    TRANSACTIONS -- Recommendation of the Board of Directors; Fairness of the
    Transaction" is incorporated herein by reference.
 
        (f) Not applicable.
 
ITEM 9.  REPORTS, OPINIONS, APPRAISALS AND CERTAIN NEGOTIATIONS.
 
   
        (a)-(c) The information set forth in the Proxy Statement/Prospectus
    under "SUMMARY AND SPECIAL FACTORS"; "THE PROPOSED TRANSACTIONS -- Opinions
    of Financial Advisors" is incorporated herein by reference.
    
 
ITEM 10.  INTEREST IN SECURITIES OF THE ISSUER.
 
   
        (a)-(b) The information set forth in the Proxy Statement/Prospectus
    under "GENERAL INFORMATION -- Required Vote"; "PRINCIPAL STOCKHOLDERS OF
    GENENTECH"; "SECURITY OWNERSHIP OF MANAGEMENT"; "CERTAIN INFORMATION
    CONCERNING DIREC-
    
 
                                        3
<PAGE>   5
 
   
    TORS AND EXECUTIVE OFFICERS OF THE COMPANY"; and "CERTAIN INFORMATION
    CONCERNING THE DIRECTORS AND EXECUTIVE OFFICERS OF ROCHE AND ROCHE HOLDING"
    is incorporated by reference.
    
 
ITEM 11.  CONTRACTS, ARRANGEMENTS OR UNDERSTANDINGS WITH RESPECT TO THE ISSUER'S
SECURITIES.
 
        The information set forth in the Proxy Statement/Prospectus under
    "SUMMARY AND SPECIAL FACTORS", "CONDUCT OF GENENTECH'S BUSINESS AFTER
    COMPLETION OF THE PROPOSED TRANSACTIONS; ROCHE'S PLANS WITH RESPECT TO
    GENENTECH", "THE MERGER AGREEMENT", "THE CHARTER AMENDMENT; DESCRIPTION OF
    THE SPECIAL COMMON STOCK", "THE AMENDED GOVERNANCE AGREEMENT" and "GUARANTY
    OF ROCHE HOLDING" is incorporated herein by reference.
 
ITEM 12.  PRESENT INTENTION AND RECOMMENDATION OF CERTAIN PERSONS WITH REGARD TO
THE TRANSACTION.
 
   
        (a)-(b) The information set forth in the Proxy Statement/Prospectus
    under "THE PROPOSED TRANSACTIONS -- Recommendation of the Board of
    Directors; Fairness of the Transaction", "-- Opinions of Financial
    Advisors", and "THE MERGER AGREEMENT" is incorporated herein by reference.
    
 
ITEM 13.  OTHER PROVISIONS OF THE TRANSACTION.
 
        (a) The information set forth in the Proxy Statement/Prospectus under
    "GENERAL INFORMATION -- No Appraisal Rights" is incorporated herein by
    reference.
 
        (b) Not applicable.
 
        (c) Not applicable.
 
ITEM 14.  FINANCIAL INFORMATION.
 
   
    The information set forth in the Proxy Statement/Prospectus under "SELECTED
HISTORICAL FINANCIAL DATA" is incorporated herein by reference. In addition, the
information set forth in (i) Item 14(a)(2) of Part IV of Genentech's Annual
Report on Form 10-K for the year ended December 31, 1994, (ii) Part II of
Genentech's Quarterly Report on Form 10-Q for the quarter ended June 30, 1995
(iii) Part II of Genentech's Quarterly Report on Form 10-Q for the quarter ended
March 31, 1995 and (iv) pages 39-61 of Genentech's Annual Report to Stockholders
for the year ended December 31, 1994 is incorporated herein by reference.
    
 
ITEM 15.  PERSONS AND ASSETS EMPLOYED, RETAINED OR UTILIZED.
 
        (a) The information set forth in the Proxy Statement/Prospectus under
    "GENERAL INFORMATION -- Solicitation of Proxies" is incorporated herein by
    reference.
 
        (b) The information set forth in the Proxy Statement/Prospectus under
    "GENERAL INFORMATION -- Solicitation of Proxies" and "THE PROPOSED
    TRANSACTIONS -- Source of Funds; Expenses" is incorporated herein by
    reference.
 
ITEM 16.  ADDITIONAL INFORMATION.
 
    Reference is hereby made to the Proxy Statement/Prospectus and to each
exhibit attached thereto, each of which is incorporated herein by reference.
 
ITEM 17.  MATERIAL TO BE FILED AS EXHIBITS.
 
   
        (b)(2) Materials, entitled "Roche Holding AG -- Discussion Materials,"
    forming part of the presentation made by Lehman Brothers to the Genentech
    Board of Directors on April 29, 1995.
    
 
   
        (b)(3) Materials, entitled "Roche Holding AG -- Updated Presentation
    Based on New Structure," forming part of the presentation made by Lehman
    Brothers to the Genentech Board of Directors on April 29, 1995.
    
 
   
        (b)(4) Opinion of Morgan Stanley & Co. (incorporated by reference to
    Annex C to the Proxy Statement/Prospectus).
    
 
   
        (b)(5) Materials forming part of the presentation made by Morgan Stanley
    & Co. to the Genentech Board of Directors on July 7, 1995.
    
 
   
        (c)(1) Agreement and Plan of Merger, dated May 23, 1995, as amended and
    restated, among Roche, Merger Sub and Genentech (incorporated by reference
    to Annex A to the Proxy Statement/Prospectus). (The exhibit filed herewith
    supercedes the exhibit previously filed under this exhibit number.)
    
 
   
        (c)(2) Amended and Restated Governance Agreement, as amended, to be
    entered into at the effective time of the merger contemplated by the Merger
    Agreement included as Exhibit (c)(1) hereof (incorporated by reference to
    Exhibit A to Annex A to the Proxy Statement/Prospectus). (The exhibit filed
    herewith supercedes the exhibit previously filed under this exhibit number.)
    
 
   
        (c)(3) Guaranty of Roche Holding Ltd, as amended, to be dated as of the
    effective date of the merger contemplated by the Merger Agreement included
    as Exhibit (c)(1) hereof (incorporated by reference to Exhibit B to Annex A
    to the Proxy Statement/Prospectus). (The exhibit filed herewith supercedes
    the exhibit previously filed under this exhibit number.)
    
 
   
        (c)(4) Article THIRD to Amended and Restated Certificate of
    Incorporation of Genentech, as amended (incorporated by reference to Exhibit
    C to Annex A to the Proxy Statement/Prospectus). (The exhibit filed herewith
    supercedes the exhibit previously filed under this exhibit number.)
    
 
   
        (c)(5) Agreement, dated as of July 7, 1995, among Roche, Merger Sub and
    Genentech (incorporated by reference to Exhibit 2.2 to Genentech's
    Registration Statement on Form S-4, as amended (File No. 33-59949)).
    
 
   
        (c)(6) Agreement, dated as of September 6, 1995, among Roche, Merger Sub
    and Genentech (incorporated by reference to Exhibit 2.3 to Genentech's
    Registration Statement on Form S-4, as amended (File No. 33-59949)).
    
 
   
        (c)(7) Agency Agreement, dated as of September 6, 1995, among Genentech,
    Citibank, N.A., as agent, and Roche Holding (incorporated by reference to
    Exhibit 10.4 to Genentech's Registration Statement on Form S-4, as amended
    (File No. 33-59949)).
    
 
   
        (c)(8) Letter Agreement, dated September 6, 1995, among Genentech, Roche
    and Roche Holding (incorporated by reference to Exhibit 10.5 to Genentech's
    Registration Statement on Form S-4, as amended (File No. 33-59949)).
    
 
   
        (d) Proxy Statement/Prospectus and related Notice of Special Meeting,
    Letter to Shareholders and Proxy (incorporated by reference to the Proxy
    Statement/Prospectus and related material filed under a Schedule 14A by
    Genentech on the date hereof). (The exhibit filed herewith supercedes the
    exhibit previously filed under this exhibit number.)
    
 
                                        4
<PAGE>   6
 
                                   SIGNATURE
 
    After due inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
 
   
Date: September 8, 1995           GENENTECH, INC.
    
 
                                  By: /s/  John P. McLaughlin
 
                                   ---------------------------------------------
                                   Name: John P. McLaughlin
                                   Title:  Senior Vice President and Secretary
 
                                   ROCHE HOLDINGS, INC.
 
                                   By: /s/  Henri B. Meier
 
                                   ---------------------------------------------
                                   Name: Henri B. Meier
                                   Title:  Vice President
 
                                        5
<PAGE>   7
 
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
EXHIBIT                                                                                                                SEQUENTIAL
  NO.                                                                                                                   PAGE NO.
-------                                                                                                                ----------
<S>        <C>                                                                                                         <C>
(b)(2)     Materials, entitled "Roche Holding AG -- Discussion Materials," forming part of the presentation made by
           Lehman Brothers to the Genentech Board of Directors on April 29, 1995.
(b)(3)     Materials, entitled "Roche Holding AG -- Updated Presentation Based on New Structure," forming part of the
           presentation made by Lehman Brothers to the Genentech Board of Directors on April 29, 1995.
(b)(4)     Opinion of Morgan Stanley & Co. (incorporated by reference to Annex C to the Proxy Statement).
(b)(5)     Materials forming part of the presentation made by Morgan Stanley & Co. to the Genentech Board of
           Directors on July 7, 1995.
(c)(1)     Agreement and Plan of Merger, dated May 23, 1995, as amended, and restated, among Roche, Merger Sub and
           Genentech (incorporated by reference to Annex A to the Proxy Statement/Prospectus). (The exhibit filed
           herewith supercedes the exhibit previously filed under this exhibit number.)
(c)(2)     Amended and Restated Governance Agreement, as amended, to be entered into at the effective time of the
           merger contemplated by the Merger Agreement included as Exhibit (c)(1) hereof (incorporated by reference
           to Exhibit A to Annex A to the Proxy Statement/Prospectus). (The exhibit filed herewith supercedes the
           exhibit previously filed under this exhibit number.)
(c)(3)     Guaranty of Roche Holding Ltd, as amended, to be dated as of the effective date of the merger contemplated
           by the Merger Agreement included as Exhibit (c)(1) hereof (incorporated by reference to Exhibit B to Annex
           A to the Proxy Statement). (The exhibit filed herewith supercedes the exhibit previously filed under this
           exhibit number.)
(c)(4)     Article THIRD to Amended and Restated Certificate of Incorporation of Genentech, as amended (incorporated
           by reference to Exhibit C to Annex A to the Proxy Statement/Prospectus). (The exhibit filed herewith
           supercedes the exhibit previously filed under this exhibit number.)
(c)(5)     Agreement, dated as of July 7, 1995, among Roche, Merger Sub and Genentech (incorporated by reference to
           Exhibit 2.2 to Genentech's Registration Statement on Form S-4, as amended (File No. 33-59949)).
(c)(6)     Agreement, dated as of September 6, 1995, among Roche, Merger Sub and Genentech (incorporated by reference
           to Exhibit 2.3 to Genentech's Registration Statement on Form S-4, as amended (File No. 33-59949)).
(c)(7)     Agency Agreement, dated as of September 6, 1995, among Genentech, Citibank, N.A., as agent, and Roche
           Holding (incorporated by reference to Exhibit 10.4 to Genentech's Registration Statement on Form S-4, as
           amended (File No. 33-59949)).
(c)(8)     Letter Agreement, dated September 6, 1995, among Genentech, Roche and Roche Holding (incorporated by
           reference to Exhibit 10.5 to Genentech's Registration Statement on Form S-4, as amended (File No.
           33-59949)).
(d)        Proxy Statement/Prospectus and related Notice of Special Meeting, Letter to Shareholders and Proxy
           (incorporated by reference to the Proxy Statement/Prospectus and related material filed by Genentech under
           a Schedule 14A and on Form S-4 on the date hereof). (The exhibit filed herewith supercedes the exhibit
           previously filed under this exhibit number.)
</TABLE>
    

<PAGE>   1
                                                                   EXHIBIT B2

Roche Holding AG
Discussion Materials
April 29, 1995
Lehman Brothers
<PAGE>   2


I. VALUATION OF PROPOSED STRUCTURES

<TABLE>
<CAPTION>
                                                                       Fully Diluted       Fully Diluted
Stock Price                                                              Value (a)           Value (b)
-----------                                                              ---------           ---------

<S>                                                                        <C>                 <C>    
     $82                                                                   $4,692              $10,963

     $63           (PV of $82 @ 7%; AAA Bond Rate)                         $3,605               $8,423

     $60                                                                   $3,434               $8,022

     $46           (PV of $60 @ 7%; AAA Bond Rate)                         $2,632               $6,150
</TABLE>

-------

(a)  Value of remaining 57.225 million shares that are currently not held by
     Roche on a fully diluted basis.
(b)  Value of 133.701 million shares on a fully-diluted basis. Includes stock
     options and warrants.

<PAGE>   3

VALUATION PARAMETERS

<TABLE>
<CAPTION>
                                                               Transaction Value + Net Debt
                                                                     As a Multiple of:
                                                                     -----------------
                                                                LTM                     LTM
Transactions                                                  Revenues                  EBIT
------------                                                 --------                   ----

<S>                                                            <C>                       <C> 
American Home Products / American Cyanamid                     2.21                      18.6

Hoffman La Roche / Syntex                                      2.77                      16.2

Glaxo / Wellcome                                               3.86                      12.2

Hoechst / Marion Merrell Dow (pending)                         2.21                      11.7

---------------------------------------------------------------------------------------------
Median                                                         2.49                      14.2
---------------------------------------------------------------------------------------------
</TABLE>

<PAGE>   4

IMPUTED VALUATION OF GENENTECH FROM BENCHMARKS
<TABLE>
<CAPTION>

Transaction Value + Net Debt                                 Benchmark                  Imputed
as a Multiple of:                                            Median (a)                Value (b)
-----------------                                            ----------                ---------
<S>                                                            <C>                       <C>
Revenue                                                        2.49                      $1,874

EBIT                                                           14.2                      $1,210
</TABLE>

-------
(a)  Multiple of Transaction Value.
(b)  Based on results of Fiscal Year ended December 31, 1994 ($ in millions).

<PAGE>   5
VALUATION PARAMETERS: PROXY BENCHMARKS

Selected Transactions in the Pharmaceutical and Biotechnology Industries
($ in millions)
<TABLE>
<CAPTION>

                                                                                                      Total
                                                                                     Total         Transaction
                               Announcement                      EBIT             Transaction      Value + Net
                                   Date            Revenues     Margin               Value            Debt
                                   ----            --------     ------               -----            ----
<S>                               <C>              <C>          <C>               <C>              <C>
Hoechst / Marion
  Merrell Dow                     2/28/95          $3,061.4      19.0%             $ 7,328.7        $ 6,765.7
Glaxo / Wellcome                  1/23/95           3,545.2      31.6%              14,503.8         13,684.6
American Home /                   
  ACY                             8/18/94           4,386.1       9.6%               9,424.1          9,704.5
Roche / Syntex                     5/2/94           1,869.0      17.1%               5,359.3          5,183.1
</TABLE>

<TABLE>
<CAPTION>
                                    Transaction Value As a Multiple of:
                                    -----------------------------------
                                    LTM EPS                  Book Value
                                    -------                  ----------
<S>                                 <C>                      <C>
Hoechst / Marion
  Merrell Dow                        16.4x                     3.42x
Glaxo / Wellcome                     20.5                      5.36
American Home /                      
  ACY                                26.9                      6.34   
Roche / Syntex                       18.9                      4.11
</TABLE>

<TABLE>
<CAPTION>
                                       Transaction Value + Net Debt As a Multiple of:
                                       ----------------------------------------------
                           Revenues            EBIT               EBITDA            Less Cash
                           --------            ----               ------            ---------
<S>                        <C>                <C>                <C>               <C>
Hoechst / Marion
  Merrell Dow               2.21x              11.7x               9.3x                 NAx
Glaxo / Wellcome            3.86               12.2                10.9                4.85
American Home /             
  ACY                       2.21               18.6                15.2                1.78    
Roche / Syntex              2.77               16.2                11.8                2.44
</TABLE>

<TABLE>
<CAPTION>
                        Transaction
                        -----------
                    Value As a Multiple of:                    Transaction Value + Net Debt As a Multiple of:
                    -----------------------                    ----------------------------------------------
                  LTM EPS          Book Value         Revenues            EBIT             EBITDA           Less Cash
                  -------          ----------         --------            ----             ------           ---------
<S>               <C>              <C>                <C>                 <C>              <C>              <C>
Mean               20.7x              4.81x             2.76x             14.7x             11.8x              3.02x
Median             19.7               4.74              2.49              14.2              11.4               2.44
High               26.9               6.34              3.86              18.6              15.2               4.85
Low                16.4               3.42              2.21              11.7              9.3                1.78
</TABLE>
<PAGE>   6

ADJUSTED GOING CONCERN VALUE OF GENENTECH

<TABLE>
<CAPTION>
                                                Base Case                   R&D                     R&D
                                                 R&D (a)               17% of Sales             20% of Sales
                                                 -------               ------------             ------------
<S>                                              <C>                   <C>                      <C>
1995E Net Income (a)                             $164.8                  $253.6 (b)               $237.4 (b)

1995E EPS (a)                                    $ 1.35                  $ 2.08                   $ 1.95

Est. Market Capitalization (c)                   $2,537                  $3,906                   $3,656
</TABLE>

-------
(a)  Source: Company Projections. 1995E R&D of $363.8 million.
(b)  R&D expense reduced to 17% and 20% of Sales. Tax rate adjusted to 38%.
(c)  Net Income multiplied by mean of benchmark forward (1995) PE of 15.4x.
     Benchmark companies include Amgen, Astra, Wellcome (pre-merger) and Glaxo.
     The benchmark companies were selected based on the following selection
     criteria: Strong financial records, research driven and growth record a
     function of limited product breadth


<PAGE>   7
DISCOUNTED CASH FLOW MODEL
Discounted Cash Flow Analysis (a)

Base Case (b)     Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $3,096       $2,792       $2,548       $2,352
12x       3,392        3,035        2,750        2,520
14x       3,689        3,279        2,952        2,688
</TABLE>

Base Case (b)     Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $23.16       $20.88       $19.06       $17.59
12x       25.37        22.70        20.57        18.85
14x       27.59        24.52        22.08        20.10
</TABLE>

Sensitivity Case I (b)     Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $2,653       $2,419       $2,232       $2,082
12x       2,882        2,608        2,388        2,212
14x       3,112        2,796        2,544        2,342
</TABLE>

Sensitivity Case I (b)     Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $19.84       $18.10       $16.70       $15.57
12x       21.56        19.50        17.86        16.54
14x       23.27        20.91        19.03        17.51
</TABLE>

Sensitivity Case II (b)    Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $2,706       $2,465       $2,272       $2,116
12x       2,944        2,660        2,433        2,251
14x       3,181        2,855        2,595        2,385
</TABLE>

Sensitivity Case II (b)    Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $20.24       $18.44       $16.99       $15.83
12x       22.02        19.90        18.20        16.83
14x       23.79        21.35        19.41        17.84
</TABLE>

-------
(a)  The net present value of unlevered free cash flows + the PV of a range of
     10 - 14x 1999 EBIT + net cash (debt). Unlevered free cash flow is equal to
     the after-tax operating income (tax rate based on Company projections as of
     April 28, 1995) + non-cash operating adjustments and capital expenditures.
(b)  Adjusted for net cash of $1,233.1.
(c)  Assumes fully-diluted shares of 133.701 million, including all outstanding
     options and warrants.
(d)  Sensitivity Case I: One Year Delay in revenue.
(e)  Sensitivity Case II: Achieve 80% of plan.


<PAGE>   1
                                                                 EXHIBIT B3

Roche Holding AG
Updated Presentation Based on New Structure
April 29, 1995
Lehman Brothers

<PAGE>   2
IRR OF HYPOTHETICAL RCS OPTION EXTENSION TO GENENTECH

<TABLE>
<CAPTION>
                                             June          June          June          June          June
Redemption Price (per share)                 1995          1996          1997          1998          1999
----------------------------                 ----          ----          ----          ----          ----
<S>                                         <C>           <C>           <C>           <C>           <C>
Quarterly Step-Up                              --          $1.25         $1.25         $1.50         $1.50
Total Redemption Price                      $60.00        $65.00        $70.00        $76.00        $82.00

Implied IRR
-----------
From 9/10/90 (a)                              21.1%         18.8%         17.1%         16.0%         15.0%
From 6/30/95 @  $50.125 (b)                    --           29.7%         18.2%         14.9%         13.1%
                                                  

From 6/30/95 @ $40                             --           62.5%         32.3%         23.9%         19.7%

From 6/30/95 @ $30                             --          116.7%         52.8%         36.3%          28.6%
</TABLE>

-------
(a)  Based on stock price of $23.875 on 9/10/90, the first trading day for
     Genentech redeemable common.
(b)  Based on closing stock price of $50.125 at 4/25/95.

<PAGE>   3
ROCHE OWNERSHIP OF GENENTECH

<TABLE>
<CAPTION>
(shares in thousands)                      Common                      RCS                      Total
                                           ------                      ---                      -----
<S>                                        <C>                       <C>                       <C>
Roche Ownership
1995 Proxy Date                            67,133                     4,453                     71,587
Recent Purchases                             --                       4,890                      4,890
                                           -------                    -------                   -------
Total @ 3/31/95                            67,133                     9,343                     76,476

Total Shares

Outstanding (Roche %)                      67,133  (100%)            50,448  (18.5%)           117,581  (65.0%)

Options

(Vested & Non-Vested) (a)                                            15,981
Warrants                                                                139
                                                                     ------
                                                                     16,120

Total Fully-Diluted Shares

Outstanding (Roche %)                      67,133  (100%)            66,567  (14.0%)           133,701  (57.2%)

Implied Open-Market Share                          Primary           17,589
Purchases to Reach 80%                           Fully-diluted       30,485
</TABLE>

---------------
(a)  As of December 31, 1994.


<PAGE>   4


ROCHE OWNERSHIP OF GENENTECH - OPEN MARKET PURCHASE ANALYSIS

<TABLE>
<S>                                                     <C>     <C>                       <C>     <C>
(thousand shares)
Target Share Ownership (a)                                  75%                               80%
                                                            ---                               ---

Total Open Market Purchases (a)                         11,710  $673,325                  17,589  $1,011,368
                                                                ---------                         ----------

% of "Free" Float (b)                                     30.8%                             46.2%

Implied Quarterly Purchases (c)                            976                             1,466

% of Quarterly Trading Volume (d)                          9.0%                             13.5%
</TABLE>

----------
(a)  Based on current shares outstanding (117.6 million) as of 3/31/95.  $ Value
     based on purchase price of $57.50.
(b)  Float of 38.05 million RCS shares outstanding excluding Roche and employee
     stock ownership.
(c)  Equal amounts purchased quarterly from July 1995 through June 1998 (12
     periods).
(d)  Based on the average quarterly trading volume for Genentech of 10.83
     million for the quarters from 1/1/93 through 12/31/94.

<PAGE>   5

IMPLIED COST OF TOTAL EQUITY PURCHASE TO ROCHE

(in $ million except per share data)

<TABLE>
<CAPTION>
Cost of Exercise @:               Common (a)           Redeemable Common (b)     Redeemable Common (c)          Total (c)
-------------------               ----------           ---------------------     ---------------------          ---------
<S>                         <C>             <C>       <C>              <C>      <C>             <C>       <C>             <C>
$60 (June 1995)             Shares:          67.13    Shares:           9.34    Shares:          57.22    Shares:         133.70
                            Cost:           $2,025    Cost:             $371    Cost:           $3,433    Cost:           $5,829
                                            ------                      ----                    ------                    ------
                            Avg Price:      $30.16    Avg Price:      $39.81    Avg Price:      $60.00    Avg Price:      $43.60

$82 (June 1999)             Shares:          67.13    Shares:           9.34    Shares:          57.22    Shares:         133.70
                            Cost:           $2,025    Cost:             $371    Cost:           $4,692    Cost:           $7,088
                                            ------                      ----                    ------                    ------
                            Avg Price:      $30.16    Avg Price:      $39.81    Avg Price:      $82.00    Avg Price:      $53.02

$82 June 1999               Shares:          67.13    Shares:          39.83    Shares:          26.74    Shares:         133.70
(with ownership             Cost:           $2,025    Cost:           $2,123    Cost:           $2,193    Cost:           $6,340
increase to 80%)                            ------                    ------                    ------                    ------
                            Avg Price:      $30.16    Avg Price:      $53.30    Avg Price:      $82.00    Avg Price:      $47.42
</TABLE>


----------
(a)  1990 Transaction.

(b)  Based on Genentech estimate of Roche open market purchase of 9.343 million
     shares of RCS as of March 31, 1995. In the third case, Roche is assumed to
     make additional open market purchase prior to December 1998 at an average
     price of $57.50 to bring its combined ownership to 80% prior to option
     exercise in December 1998 at $82 a share.

(c)  Total shares based on 67,133,409 common shares outstanding and 50,447,727
     shares of RCS outstanding as of March 31, 1995. Includes outstanding
     options (15,980,807) and warrants (138,915) as of December 31, 1994.

<PAGE>   6

COST OF REDEEMABLE STOCK OPTION EXERCISE TO ROCHE

<TABLE>
<CAPTION>
(in $ millions)                            Gross Cost            Net Cash      Net Cost of Option Exercise
                                            of Option            --------      ---------------------------
Cost of Exercise @:                         Exercise             W/O Div.                W/O Div.
-------------------                        ----------            --------                --------
<S>                                        <C>                    <C>                     <C>
$60 (June 1995)                            $3,433 (b)             $1,353                  $2,080

$82 (June 1999)                            $4,692 (b)             $1,763                  $2,929

$82 (June 1999 with
ownership increase to 80%) (d)             $3,945 (b) (c)         $1,763                  $2,182
</TABLE>

----------
(a)  Assuming 75% of projected cash balance as of December 1995 for $60 
     exercise and Year-end 1999 cash balance for $82 exercise  available to 
     offset option exercise. Includes option proceeds of $565 million.
(b)  Includes outstanding options and warrants.
(c)  Includes additional open market purchases of RCS to reach 80% ownership
     level.
(d)  Assumes open market purchase price of RCS at $57.50 up to 80% and the 
     exercise of option for the remaining 26.74 million shares at $82 per share.


<PAGE>   7


GENENTECH HISTORICAL STOCK PRICE PERFORMANCE

[Graph plotting Genentech daily stock price from $22.500 on 1/1/91 to $50.125 on
4/27/95 against redemption price from $39 on 1/1/91 to $60 on 4/27/95, stepping
$1 the first quarter, $1.25 quarterly the next 15 quarters and $1 the last
period.]

<PAGE>   8

GENENTECH HISTORICAL PUBLIC MARKET VALUATION MODEL (STAND-ALONE)

<TABLE>
<CAPTION>
                                           1991             1992             1993            1994             1995 (P)
                                           ----             ----             ----            ----             --------
<S>                                    <C>              <C>              <C>              <C>               <C>
EPS Range
Genentech Forward Year EPS (a)            $0.65            $0.33(c)         $0.50(c)         $0.82             $1.28
Genentech EPS Actual                      $0.39            $0.20(c)         $0.77(c)         $1.04              1.35(f)

Calculated P/E Multiple (b)                36.0             34.6(d)          24.8(d)          18.0              32.7

Implied Genentech Stock
Price Range                            $23.40-$14.04    $11.42-$6.92     $12.40-$19.10    $14.76-$18.72     $41.86-$44.15
Actual High-Low (e)                    $28.50-$21.00    $31.88-$26.50    $39.50-$32.25    $50.88-$44.00     $51.00-$44.50
Mean Variance, Actual to Implied         + 32.2%         + 218.3%         + 127.8%         + 183.4%           + 11.0%
</TABLE>

----------
(a)  Median IBES estimate as of February of the corresponding year.
(b)  1-year forward P/E multiples for comparables (AMGN, GENZ, CHIR).
(c)  2-year forward IBES EPS estimate as of the beginning and end of the
     corresponding period.
(d)  2-year forward P/E multiple for comparables (AMGN, GENZ, CHIR).
(e)  High-Low closing prices Q1 of the corresponding year.
(f)  Company projections as provided by Genentech management.

<PAGE>   9
GENENTECH PUBLIC MARKET VALUATION MODEL - BASE CASE (STAND-ALONE)

<TABLE>
<CAPTION>
                                        June 30,       June 30,       June 30,      June 30,        June 30,
                                          1995           1996           1997          1998            1999
                                          ----           ----           ----          ----            ----
<S>                                     <C>            <C>            <C>            <C>            <C>    
Projected EPS (a)                       $  1.35        $  1.50        $  1.64        $  2.00        $  2.48

Implied Stock Price Based On:

Forward P/E Ratio (b)                   $ 44.15        $ 49.05        $ 53.63        $ 65.40        $ 81.10

Forward P/E-to 5 yr
Growth Rate Model (c)                   $ 19.22        $ 24.00        $ 29.56        $ 44.04        $ 61.81
                                         ------         ------         ------         ------         ------

Average                                 $ 31.68        $ 36.52        $ 41.59        $ 54.72        $ 71.45

Discount to Extended Option Price         47.2%          43.8%          40.6%          28.0%          12.9%
</TABLE>

---------------
(a)  Source: Company projections as provided by Genentech management.
(b)  32.7x, based on mean forward P/E multiple of comparable companies (AMGN,
     GENZ, CHIR).
(c)  Based on growth-rate-adjusted forward P/E multiple (0.75x) derived from
     comparable companies and applied to company projections. Used 5-yr growth
     rate for 1995 (19.0%) and 1996 (21.3%), 4-yr growth rate for 1997 (24.0%)
     and 1998 (29.4%), and 3-yr growth rate for 1999 (33.2%).

<PAGE>   10

GENENTECH HISTORICAL STOCK PRICE PERFORMANCE

[Graph plotting Genentech projected stand-alone stock price from 7/95 to 6/99
shown annually against Roche quarterly Option Exercise Price starting at $61.25
and stepping $1.25 the first 7 quarters to $70 and stepping $1.50 the remaining
8 quarters to $82.]

Standalone Stock Price - Base Case
Jul-95              $31.68
Jun-96              $36.52
Jun-97              $41.59
Jun-98              $54.72
Jun-99              $71.45

<PAGE>   11

GENENTECH PUBLIC MARKET VALUATION MODEL - WITH RCS OPTION EXTENSION

<TABLE>
<CAPTION>
Historical
----------
                                            Jun-91         Jun-92         Jun-93         Jun-94
                                            ------         ------         ------         ------
<S>                                        <C>            <C>            <C>            <C>    
RCS Option Exercise Price                   $   40         $   45         $   50         $   55

Genentech Historical Stock Price (d)       $ 27.50        $ 31.75        $ 44.00        $ 49.25

Implied IRR to Final Option Price            21.5%          23.6%          16.8%          21.8%
Discount to Near-term Option Price           31.3%          29.4%          12.0%          10.5%
</TABLE>


<TABLE>
<CAPTION>
Projected
---------
                                                       Jun-95         Jun-96         Jun-97         Jun-98
                                                       ------         ------         ------         ------
<S>                                                   <C>            <C>            <C>            <C>   
RCS Option Exercise Price                              $   60         $   65         $   70         $   76

Genentech Historical Stock Price (d)                                ------Assumptions(a)--------

Implied IRR to Final Option Price                       21.6%          21.6%          21.6%          21.6%
Discount to Near-term Option Price                      31.3%          29.4%          12.0%          10.5%

Projected Stock Price Based on:                                     ------Implied Values(a)---
Implied IRR (b)                                       $ 37.50        $ 45.61        $ 55.46        $ 67.43
Discount to Near-term Option Price (c)                $ 41.22        $ 45.89        $ 61.60        $ 68.02
                                                      ----------------------------------------------------
Average Projected Genentech Public Market Price
with Option Extension                                 $ 39.36        $ 45.75        $ 58.53        $ 67.73
</TABLE>


----------
(a)  Projected data are derived by applying historical data to the RCS option
     extension period.
(b)  Historical IRR of 21.6% for the period between 9/10/90 to 6/30/95.
(c)  Applied the same observed discounts for the historical 4-year period to the
     projected 4-year period.
(d)  Stock price as of end of June of each corresponding period.
<PAGE>   12

GENENTECH VALUATION MODEL (WITH EXTENSION) VS. RCS OPTION EXERCISE PRICE

[Graph plotting projected Genentech stock price with Option Extension from 7/95
to 6/98 shown annually against Roche quarterly Option Exercise Price starting at
$61.25 and stepping $1.25 the first 7 quarters to $70 and stepping $1.50 the
remaining 8 quarters to $82.]

Projected Stock price with Option Extension

<TABLE>
<S>                  <C>
Jul-95               $39.36
Jun-96               $45.75
Jun-97               $58.53
Jun-98               $67.73
</TABLE>

<PAGE>   13

COMPARISON OF STAND-ALONE AND RCS OPTION EXTENSION VALUATION MODELS

[Graph plotting Genentech projected stock price with Option Extension from 7/95
to 6/98 shown annually against Genentech projected stand-alone stock price from
7/95 to 6/99 shown annually and against Roche Option Exercise Price starting at
$61.25 and stepping $1.25 quarterly the first 7 quarters to $70 and stepping
$1.50 the remaining 8 quarters to $82. Percent difference between Stand-alone
Price and Price with Extension is noted.]

<TABLE>
<CAPTION>
              Stand-alone        With Option Extension      % Difference
<S>           <C>                <C>                        <C>
Jul-95           $31.68                 $39.36                  24.2%
Jun-96           $36.52                 $45.75                  25.3%
Jun-97           $41.59                 $58.53                  40.7%
Jun-98           $54.72                 $67.73                  23.8%
Jun-99           $71.45                    ---                   ---
</TABLE>

<PAGE>   14
GENENTECH CONTROL VALUATION ANALYSIS - MANAGEMENT PROJECTIONS

($ in millions, except per share data)

<TABLE>
<CAPTION>
                                                                                                               5-Year
                                  1994A         1995         1996         1997         1998          1999       CAGR
                                  -----         ----         ----         ----         ----          ----       ----
<S>                              <C>           <C>          <C>          <C>          <C>           <C>        <C>
Base Projection
---------------
Total Revenues (a)               $ 753         $ 874        $ 950        $1,101       $1,279        $1,490      14.6%
         % Growth                               16.1%         8.7%         15.9%        16.2%         16.5%
Operating Income (b)                85           149          188           256          350           452      39.6%
         % Margin                 11.3%         17.0%        19.8%         23.2%        27.3%         30.3%
Net Income (c)                     124           165          186           207          257           324      21.1%
         % Margin                 16.5%         18.9%        19.5%         18.9%        20.1%         21.7%
EPS                              $1.04         $1.35        $1.50        $ 1.64       $ 2.00        $ 2.48      19.0%
         % Growth                               29.8%        11.0%          9.6%        21.6%         24.2%

International Collaboration
---------------------------
Total Revenues (a)               $ 753         $ 948        $ 985        $1,106       $1,193        $1,334      12.1%
         % Growth                               26.0%         3.9%         12.3%         7.9%         11.8%
Operating Income (b)                85           223          267           325          359           409      36.8%
         % Margin                 11.3%         23.5%        27.1%         29.4%        30.1%         30.7%
Net Income (c)                     124           228          259           276          299           336      22.0%
         % Margin                 16.5%         24.1%        26.3%         25.0%        25.1%         25.2%
EPS                              $1.04         $1.87        $2.10        $ 2.19       $ 2.33        $ 2.57      19.8%
         % Growth                               79.6%        12.4%          4.2%         6.5%         10.3%
</TABLE>

-------
(a)  Interest income is presented below the operating line.
(b)  Before European profit sharing and net interest expense.
(c)  Based on effective tax rates of: 1994 - 4%; 1995 - 15%; 1996 - 25%; 1997 to
     1999 - 35%.
<PAGE>   15

GENENTECH CONTROL VALUATION ANALYSIS

Comparison of Control Multiples

<TABLE>
<CAPTION>
                                                                $60 @            $82 @
                                                                Jun-95           Jun-99
                                                                ------           ------
<S>                                                            <C>              <C>
Shares (Fully-diluted)                                           133.7             133.7
Transaction Value                                              8,022.1          10,963.5
Transaction Value + Net Debt (a)                               6,556.4           8,951.9

Transaction Value as Multiple of:
         Last Fiscal Year EPS                                     57.7x             41.0x
         Forward Year EPS                                         44.4x             23.1x

Transaction Value + Net Debt as a Multiple of:
         Last Fiscal Year Revenues                                8.71x             7.00x
         Forward Year Revenues                                    7.50x             6.01x

         Last Fiscal Year EBIT                                    77.1x             25.6x
         Forward Year EBIT                                        44.0x             19.8x

         Last Fiscal Year EBIT + R&D                              16.4x             11.6x
         Forward Year EBIT + R&D                                  12.8x             10.2x
</TABLE>

-------
(a)  Adjusted for option proceeds.

<PAGE>   16

VALUATION PARAMETERS: PROXY BENCHMARKS

Selected Transactions in the Pharmaceutical and Biotechnology Industries
($ in millions)
<TABLE>
<CAPTION>

                                                                                                      Total
                                                                                     Total         Transaction
                               Announcement                      EBIT             Transaction      Value + Net
                                   Date            Revenues     Margin               Value            Debt
                                   ----            --------     ------               -----            ----
<S>                            <C>                 <C>          <C>               <C>              <C>
Hoechst / Marion
  Merrell Dow                     2/28/95          $3,061.4      19.0%             $ 7,328.7        $ 6,765.7
Glaxo / Wellcome                  1/23/95           3,545.2      31.6%              14,503.8         13,684.6
American Home /                   8/18/94           4,386.1       9.6%               9,424.1          9,704.5
  ACY
Roche / Syntex                     5/2/94           1,869.0      17.1%               5,359.3          5,183.1
</TABLE>

<TABLE>
<CAPTION>
                                    Transaction Value As a Multiple of:
                                    -----------------------------------
                                    LTM EPS                  Book Value
                                    -------                  ----------
<S>                                 <C>                      <C>
Hoechst / Marion
  Merrell Dow                        16.4x                     3.42x
Glaxo / Wellcome                     20.5                      5.36
American Home /                      26.9                      6.34
  ACY
Roche / Syntex                       18.9                      4.11
</TABLE>

<TABLE>
<CAPTION>
                                       Transaction Value + Net Debt As a Multiple of:
                                       ----------------------------------------------
                           Revenues            EBIT               EBITDA            Less Cash
                           --------            ----               ------            ---------
<S>                        <C>                 <C>                <C>               <C>
Hoechst / Marion
  Merrell Dow               2.21x              11.7x                9.3x                 NAx
Glaxo / Wellcome            3.86               12.2                10.9                4.85
American Home /             2.21               18.6                15.2                1.78
  ACY
Roche / Syntex              2.77               16.2                11.8                2.44
</TABLE>

<TABLE>
<CAPTION>
                        Transaction
                        -----------
                    Value As a Multiple of:                    Transaction Value + Net Debt As a Multiple of:
                    -----------------------                    ----------------------------------------------
                  LTM EPS          Book Value         Revenues            EBIT             EBITDA           Less Cash
                  -------          ----------         --------            ----             ------           ---------
<S>               <C>              <C>                <C>                 <C>              <C>              <C>
Mean               20.7x              4.81x             2.76x             14.7x             11.8x              3.02x
Median             19.7               4.74              2.49              14.2              11.4               2.44
High               26.9               6.34              3.86              18.6              15.2               4.85
Low                16.4               3.42              2.21              11.7              9.3                1.78
</TABLE>
<PAGE>   17

DISCOUNTED CASH FLOW MODEL
Discounted Cash Flow Analysis (a)

Base Case (b)     Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $3,096       $2,792       $2,548       $2,352
12x       3,392        3,035        2,750        2,520
14x       3,689        3,279        2,952        2,688
</TABLE>

Base Case (b)     Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $23.16       $20.88       $19.06       $17.59
12x       25.37        22.70        20.57        18.85
14x       27.59        24.52        22.08        20.10
</TABLE>

Sensitivity Case I (b)     Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $2,653       $2,419       $2,232       $2,082
12x       2,882        2,608        2,388        2,212
14x       3,112        2,796        2,544        2,342
</TABLE>

Sensitivity Case I (b)     Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $19.84       $18.10       $16.70       $15.57
12x       21.56        19.50        17.86        16.54
14x       23.27        20.91        19.03        17.51
</TABLE>

Sensitivity Case II (b)    Aggregate Equity Value
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $2,706       $2,465       $2,272       $2,116
12x       2,944        2,660        2,433        2,251
14x       3,181        2,855        2,595        2,385
</TABLE>

Sensitivity Case II (b)    Per Fully Diluted Share (c)
<TABLE>
<CAPTION>
           25%          30%          35%          40%
<S>      <C>          <C>          <C>          <C>
10x      $20.24       $18.44       $16.99       $15.83
12x       22.02        19.90        18.20        16.83
14x       23.79        21.35        19.41        17.84
</TABLE>

-------
(a)  The net present value of unlevered free cash flows + the PV of a range of
     10 - 14x 1999 EBIT + net cash (debt). Unlevered free cash flow is equal to
     the after-tax operating income (tax rate based on Company projections as of
     April 28, 1995) + non-cash operating adjustments and capital expenditures.
(b)  Adjusted for net cash of $1,233.1.
(c)  Assumes fully-diluted shares of 133.701 million, including all outstanding
     options and warrants.
(d)  Sensitivity Case I: One Year Delay in revenue.
(e)  Sensitivity Case II: Achieve 80% of plan.
<PAGE>   18

PRELIMINARY CALL OPTION VALUATION MODEL

<TABLE>
<CAPTION>
Spot Price:                      $60                  $48                 $40 
                                 ---                  ---                 ---
<S>                           <C>                   <C>                 <C>
Per Share (a)
25% Volatility                 $11.08                $5.22               $2.56
30% Volatility                  13.42                 7.10                3.95
40% Volatility                  17.99                10.92                7.01
                                -----                -----                ----
Average                        $14.16                $7.74               $4.51

Total (in $ million) (b)
25% Volatility                 $633.9               $298.6              $146.8
30% Volatility                  767.7                406.1               226.3
40% Volatility                1,029.2                624.8               401.4
                              -------                -----               -----
Average                        $810.3               $443.2              $258.1

</TABLE>

-------
(a)  Using Black-Scholes valuation for call options with the following
     variables: Risk Free rate 7%, Strike Price $82, 4 year maturity.
(b)  Based on 57.225 million shares of RCS not owned by Roche as of 1/31/95 on a
     fully-diluted basis. Excludes options and warrants.
<PAGE>   19

FLOAT ANALYSIS FOR SELECTED BIOTECH COMPANIES

Millions of Shares

<TABLE>
<CAPTION>
                            Stock                     Primary
                            Price    Primary Shares   Equity         5%
Company                    4/28/95  Outstanding (a)    Value     Holders (b)
-------                    -------  ---------------    -----     -----------
<S>                        <C>      <C>               <C>        <C>
Amgen                      $72.69        139.5        $10,142        2.5
Genentech                   50.38        117.6          5,923       79.4
Chiron                      55.25         40.0          2,210       21.2
Biogen                      39.25         33.0          1,296        0.5
Genzyme                     42.75         26.4          1,127        0.1
Centocor                    14.13         51.1            722        0.4
Genetics Institute          37.25         26.5            986       16.5
Immunex                     12.00         39.3            471       21.8
</TABLE>

<TABLE>
<CAPTION>
                                   Public Float            52 - Week Average Daily Volume (c)
                                   ------------            ----------------------------------
Company                       Shares             $            Shares                    $
-------                       ------             -            ------                    -
<S>                           <C>             <C>             <C>                    <C>
Amgen                         137.0           $9,957          1,292                  $93,912
Genentech                      38.1            1,919            227                   11,435
Chiron                         18.8            1,037            729                   40,277
Biogen                         32.5            1,276            909                   35,678
Genzyme                        26.3            1,124            366                   15,647
Centocor                       50.7              716            746                   10,537
Genetics Institute              9.9              370             59                    2,198
Immunex                        17.5              210            200                    2,400
</TABLE>


-------
(a)  Source: Lehman Brothers, Bio-Performance Monthly, January 3, 1995.
(b)  Source: Proxy Statements and Spectrum Reports.
(c)  All companies, except Genentech (NYSE) are listed on NASDAQ.

<PAGE>   20
GENENTECH OWNERSHIP PROFILE

<TABLE>
<CAPTION>
                                         Common                  Redeemable Common                    Total
                                         ------                  -----------------                    -----
                                Number            %            Number            %           Number            %
                                ------            -            ------            -           ------            -
<S>                             <C>             <C>            <C>            <C>            <C>            <C>
Roche (a)                        67.1           100.0%          9.3            18.5%          76.5           65.0%

Corporate Insiders
    ex Roche (a)                                                2.8             5.5%           2.8            2.4%

Major Institutions (a)                                         17.4            34.4%          17.4           14.8%

Retail and Unidentified                                        21.0            41.5%          21.0           17.8%
                                 ----           ------         ----           ------         -----          ------

Total (a)                        67.1           100.0%         50.4           100.0%         117.6          100.0%
                                 ====           ======         ====           ======         =====          ======
</TABLE>


-------
(a)  Source: Genentech as of March 31, 1995.
<PAGE>   21

GENENTECH INSTITUTIONAL SHAREHOLDER PROFILE

<TABLE>
<CAPTION>
                                                  Change
Institution                          Position   from 12/94  Turnover    Style
-----------                          --------   ----------  --------    -----
<S>                                  <C>        <C>         <C>       <C>
Fidelity Management & Research       2,474,400  1,732,000     High    Growth
American Express Financial           2,157,740   (222,960)
BB Biotech AG                        1,872,583                Low     Specialty
Investors Research Corporation       1,600,000                High    Momentum
Credit Suisse                          897,245                Low     Arbitrage
Sirach Capital Management              774,000   (310,960)    High    Growth
Putnam Companies                       762,500                Mod     Arbitrage
Capital Research & Management          662,500   (287,500)    Low     Growth
Van Kampen Amer Capital                614,400   (124,300)
RCM Capital Management                 504,500    187,200     Mod     Arbitrage
Wells Fargo Nikko Investment           
  Advisors                             467,703    (32,200)    Low     Index
Oppenheimer Management Corporation     400,000    275,000     Mod     Growth
Clay Finlay Inc.                       369,900     (6,800)    Low     Arbitrage
New Jersey Division of Investment      367,000    (28,500)    Mod     Growth
Wellington Management Company          365,750        150     Mod     Growth
Citicorp                               365,000     65,000     Mod     Market
                                                                       Oriented
College Retirement Equities Fund       303,700    (56,000)    Low     Index
Essex Investment Management            280,000     (7,785)    High    Growth
Lubrizol Corporation                   255,800   (575,100)    Low     Specialty
California Public Employees'           
  Retirement System                    239,900                Low     Index
Mellon Bank Corporation                216,600    (68,923)    Low     Index
Deutscher Auslanskassenverein Akt.     197,000                Low     Market
                                                                       Oriented
Guyerzeller Zurmont Bank AG            174,000                Low     Growth
General Accident Insurance             147,000    147,000     Mod     Growth
Bessemer Trust Company                 132,000    132,000     Mod     Growth
George D. Bjurman & Associates         131,100    131,075     High    Growth
T. Rowe Price                          126,650     37,300     Mod     Arbitrage
Gabelli Funds, Inc.                    122,500   (215,000)    Low     Growth
Franklin Resources                     121,500                Mod     Growth
WTG & Company LP                       117,500    117,500
Rothschild Asset Management Ltd.       100,000                Low     Growth
Comerica, Inc.                          95,270     95,270     Mod     Growth
</TABLE>


<PAGE>   22

GENENTECH INSTITUTIONAL SHAREHOLDER PROFILE (CONT'D)

<TABLE>
<CAPTION>
                                                  Change
Institution                          Position   from 12/94  Turnover   Style
-----------                          --------   ----------  --------   -----
<S>                                  <C>        <C>         <C>       <C>
Hudson Capital Advisors                 80,000                Mod     Growth
Mutual Life of Canada                   75,000                High    Growth
Pictet & Cie                            71,900                Low     Growth
Frank Russell Investment Management     60,100     54,400     Mod     Model
Bankers Trust Co.                       58,100                Low     Index
Spears Benzak Salomon                   57,250     (1,100)
PaineWebber Asset Management            51,165     32,000     High    Growth
California State Teachers
  Retirement                            50,146
                                    ----------
Sub-total:                          17,919,402

Other Institutions (Less than 50K)   2,843,036
                                    ----------
TOTAL (Institutional):              20,762,438
                                    ==========
</TABLE>

----------
Source: Provided by the Company as of March 31, 1995.

<PAGE>   23

<TABLE>
<CAPTION>
VALUATION OF PUT OPTION
<S>                          <C>
     Strike Price:            $60
Per Share(a)
25% Volatility                $ 7.14
30% Volatility                  8.94
35% Volatility                 10.73
40% Volatility                 12.48
                              ------
Average                       $10.12

Total (in $ million)(b)
25% Volatility                $408.5
30% Volatility                 511.6
35% Volatility                 613.7
40% Volatility                 714.4
                             -------
Average                      $578.89
</TABLE>

----------
(a) Using Black-Scholes valuation with the following variables: Risk Free rate 
    7%, Spot Price $50.38, 4 year maturity.
(b) Based on 57.225 million shares of RCS not owned by Roche as of 3/31/95.

<PAGE>   24

GENENTECH PUBLIC MARKET VALUATION MODEL - BASE CASE (STAND-ALONE)

<TABLE>
<CAPTION>
                              June 30,  June 30,  June 30,  June 30,  June 30,
                                1995      1996      1997      1998      1999
                              --------  --------  --------  --------  --------
<S>                            <C>       <C>       <C>       <C>       <C>
Projected EPS(a)               $ 1.35    $ 1.50    $ 1.64    $ 2.00    $ 2.48

Implied Stock Price Based On:

  Forward P/E Ratio(b)         $44.15    $49.05    $53.63    $65.40    $81.10

  Forward P/E-to 5 yr
    Growth Rate Model(c)       $19.22    $24.00    $29.56    $44.04    $61.81
                               ------    ------    ------    ------    ------

Average                        $31.68    $36.52    $41.59    $54.72    $71.45

--------------------------------------------------------------------------------
/  Discount to Extended                                                        /
/    Option Price               47.2%     43.8%     40.6%     28.0%     12.9%  /
--------------------------------------------------------------------------------
</TABLE>

----------
(a) Source: Company projections as provided by Genentech management.
(b) 32.7x, based on mean forward P/E multiple of comparable companies (AMGN, 
    GENZ, CHIR).
(c) Based on growth-rate-adjusted forward P/E multiple (0.75x) derived from 
    comparable companies and applied to company projections. Used 5-yr growth
    rate for 1995 (19.0%) and 1996 (21.3%), 4-yr growth rate for 1997 (24.0%)
    and 1998 (29.4%), and 3-yr growth rate for 1999 (33.2%).

<PAGE>   25

GENENTECH PROJECTED STOCK PRICE TREND - BASE CASE

<TABLE>
<CAPTION>
                                      June      June      June      June
                                      1995      1996      1997      1998
                                      ----      ----      ----      ----
<S>                                  <C>       <C>       <C>       <C>
Call Exercise Price                  $60.00    $65.00    $70.00    $76.00

Est. Stand-alone stock price(a)      $31.68    $36.52    $41.59    $54.72

7% Discount to Put Price             $45.77    $48.98    $52.41    $56.07

9% Discount to Put Price             $42.51    $46.33    $50.50    $55.05
</TABLE>


<TABLE>
<CAPTION>
                                      Sept      Dec       Mar       June
                                      1998      1998      1999      1999
                                      ----      ----      ----      ----
<S>                                  <C>       <C>       <C>       <C>
Call Exercise Price                  $77.50    $79.00    $80.50    $82.00
                                              --------
Est. Stand-alone stock price(a)      $58.90  / $63.09 /  $67.27    $71.45
                                             /        /
7% Discount to Put Price             $57.03  / $58.00 /  $58.99    $60.00
                                             /        /
9% Discount to Put Price             $56.24  / $57.47 /  $58.72    $60.00
                                              --------
</TABLE>

----------
(a) Projected stock price based on blended average of forward PE ratio (32.7x)
    and forward PE to 5 yr EPS growth rate (0.75x) of comparable companies.
    Comparable mean PE as of 4/25/95.

<PAGE>   26

GENENTECH VALUATION MODEL - BASE CASE (STAND-ALONE) VS. RCS OPTION
EXERCISE PRICE

[Graph plotting Genentech Stand-alone Stock Price from 7/95 to 6/99 shown
annually against 7% Discount to Put Price from 7/95 to 6/99 shown annually and
against Roche Option Exercise Price starting at $61.25 and stepping $1.25 
quarterly the first 7 quarters to $70 and stepping $1.50 the remaining
8 quarters to $82.]

<TABLE>
<CAPTION>
                                        7% Discount to
                        Stand-alone        Put Price
<S>                     <C>             <C>
Jun-95                    $31.68            $45.77
Jun-96                    $36.52            $48.98
Jun-97                    $41.59            $52.41
Jun-98                    $54.72            $56.07
Jun-99                    $71.45            $60.00
</TABLE>

<PAGE>   27
COMPARISON OF PROJECTIONS: BASE VS INTERNATIONAL COLLABORATION

<TABLE>
<CAPTION>
                                                                         -----------
($ in millions, except                                                   /  5-Year /
per share data)          1994A   1995   1996    1997    1998    1999     /  CAGR   /
                         -----   ----   ----    ----    ----    ----     /---------/
<S>                      <C>     <C>    <C>     <C>     <C>     <C>      / <C>     /
                                                                         /         /
BASE PROJECTION(I)                                                       /         /
Total Revenues(a)         $753    $874   $950   $1,101  $1,279  $1,490   /  14.6%  /
Operating Income(b)         85     149    188      256     350     452   /  39.6%  /
Net Income(c)              124     165    186      207     257     324   /  21.1%  /
EPS                      $1.04   $1.35  $1.50    $1.64   $2.00   $2.48   /  19.0%  /
                                                                         /         /
WITH INTERNATIONAL                                                       /         /
COLLABORATION(II)                                                        /         /
Total Revenues(a)         $753    $948   $985   $1,106  $1,193  $1,334   /  12.1%  /
Operating Income(b)         85     223    267      325     359     409   /  36.8%  /
Net Income                 124     228    259      276     299     336   /  22.0%  /
EPS                      $1.04   $1.87  $2.10    $2.19   $2.33   $2.57   /  19.8%  /
                                                                         -----------
% DIFFERENCE(II-I)
Total Revenues              --     8.5%   3.7%     0.5%   -6.8%  -10.5%
Operating Income            --    49.7%  42.2%    27.1%    2.7%   -9.6%
Net Income                  --    38.4%  39.5%    33.0%   16.5%    3.7%
EPS                         --    38.4%  40.0%    33.0%   16.5%    3.4%

---------------
(a) Interest income is presented below the operating line.
(b) Before European profit sharing and net interest expense.
(c) Based on effective tax rates of: 1994 - 4%; 1995 - 15%; 1996 - 25%;
    1997 to 1999 - 35%.
</TABLE>
<PAGE>   28

INTERNATIONAL COLLABORATION PUBLIC MARKET VALUATION MODEL (STAND-ALONE)

<TABLE>
<CAPTION>
                              June 30,  June 30,  June 30,  June 30,  June 30,
                                1995      1996      1997      1998      1999
                              --------  --------  --------  --------  --------
<S>                           <C>       <C>       <C>       <C>       <C>
New Projected EPS(a)           $ 1.87    $ 2.10    $ 2.19    $ 2.33    $ 2.57

Implied Stock Price Based
    On:
  Forward P/E Ratio(b)         $61.15    $68.67    $71.61    $76.19    $84.04
  Forward P/E-to 5 yr
    Growth Rate Model(c)       $27.82    $19.79    $20.75    $27.20    $39.40
                               ------    ------    ------    ------    ------
  Average                      $44.48    $44.23    $46.18    $51.69    $61.72
--------------------------------------------------------------------------------
/  Discount to Extended                                                        /
/    Option Price               25.9%     32.0%     34.0%     32.0%     24.7%  /
--------------------------------------------------------------------------------
</TABLE>

----------
(a) Source: Company projections as provided by Genentech management.
(b) 32.7x, based on mean forward P/E multiple of comparable companies (AMGN, 
    GENZ, CHIR).
(c) Based on growth-rate-adjusted forward P/E multiple (0.75x) derived from 
    comparable companies and applied to company projections. Used 5-Yr growth
    rate for 1995 and 1996, 4-yr growth rate for 1997 and 1998 and 3-yr growth
    rate for 1999.

<PAGE>   29

INTERNATIONAL COLLABORATION PROJECTED STOCK PRICE TREND

<TABLE>
<CAPTION>

                                June       June        June        June        Sept        Dec          Mar        June
                                1995       1996        1997        1998        1998        1998         1999       1999
                                ----       ----        ----        ----        ----        ----         ----        ----
<S>                            <C>        <C>         <C>         <C>         <C>         <C>          <C>         <C>
Call Exercise Price            $60.00     $65.00      $70.00      $76.00      $77.50      $79.00       $80.50      $82.00

Est. Stand-alone stock                                                                               ----------
  price(a)                     $44.48     $44.23      $46.18      $51.69      $54.20      $56.71     / $59.21 /    $61.72
                                                                                                     /        /
7% Discount to Put Price       $45.77     $48.98      $52.41      $56.07      $57.03      $58.00     / $58.99 /    $60.00
                                                                                                     /        /
9% Discount to Put Price       $42.51     $46.33      $50.50      $55.05      $56.24      $57.47     / $58.72 /    $60.00
                                                                                                     ----------
</TABLE>

---------------
(a)  Projected stock price based on blended average of forward PE ratio (32.7x)
     and forward PE to 5 yr EPS growth rate (0.75x) of comparable companies.
     Comparable mean PE as of 4/25/95.


<PAGE>   30

COMPARISON OF INTERNATIONAL COLLABORATION AND OPTION EXTENSION VALUATION

[Graph plotting Stock Price of RCS with Extension from 7/95 to 6/98 shown 
annually against International Collaboration from 7/95 to 6/99 shown annually 
against 7% Discount to Put Price from 7/95 to 6/99 shown annually against Roche 
Option Exercise Price starting at $61.25 and stepping $1.25 quarterly the first 
7 quarters to $70 and stepping $1.50 the remaining 8 quarters to $82. Percent 
difference between Stock Price of RCS with Extension and International 
Collaboration is noted.]

<TABLE>
<CAPTION>
                   International        RCS                        7% Discount
                   Collaboration   With Extension   % Difference   to Put Price
<S>                <C>             <C>              <C>            <C>
Jul-95                $44.48           $39.36          -11.5%         $45.77
Jun-96                $44.23           $45.75           +3.4%         $48.98
Jun-97                $46.18           $58.53          +26.7%         $52.41
Jun-98                $51.69           $67.73          +31.0%         $56.07
Jun-99                $61.72               --             --          $60.00
</TABLE>

<PAGE>   31

COMPARISON OF INTERNATIONAL COLLABORATION AND OPTION EXTENSION VALUATION

[Graph plotting International Collaboration from 7/95 to 6/99 shown annually 
against 7% Discount to Put Price from 7/95 to 6/99 shown annually against Roche 
Option Exercise Price starting at $61.25 and stepping $1.25 quarterly the first 
7 quarters to $70 and stepping $1.50 the remaining 8 quarters to $82.]

<TABLE>
<CAPTION>
                International Collaboration     7% Discount to Put Price
<S>             <C>                             <C>
Jul-95                     $44.48                        $45.77
Jun-96                     $44.23                        $48.98
Jun-97                     $46.18                        $52.41
Jun-98                     $51.69                        $56.07
Jun-99                     $61.72                        $60.00
</TABLE>



<PAGE>   1
                                                                   EXHIBIT B5

PROJECT ACTIVE
Presentation to the Board of Directors
July 7, 1995

PRELIMINARY DRAFT
      
<PAGE>   2

PROJECT ACTIVE
Presentation to the Board of Directors
Table of Contents


SECTION I   MARKET REACTION TO PROPOSED TRANSACTION

1.    Recent Share Price Performance
2.    Research Analysts' Commentary
3.    Analysis of Shareholdings

SECTION II  VALUATION ANALYSIS

4.    Summary of Valuation Analyses
5.    Comparison of Projections
6.    Comparable Company Analysis
7.    Present Value of Future Share Prices
8.    Precedent Transactions Analysis
9.    Discounted Cash Flow Analysis

SECTION III ANALYSIS OF TRANSACTION - FUTURE SHARE PRICE ANALYSIS

10.   Historical Trading Performance
11.   Discount to Near Term Call Price
12.   IRR to End Call Price
13.   Unaffected Share Prices
14.   Summary of Implied Future Share Price Analysis



<PAGE>   3

PROJECT ACTIVE
Presentation to the Board of Directors
Table of Contents


SECTION IV  ANALYSIS OF TRANSACTION - RETURN ANALYSIS

15.   Internal Rate of Return Analysis of Put and Final Call
16.   Internal Rate of Return of Future Call Schedule

SECTION V   ANALYSIS OF TRANSACTION - SENSITIVITY ANALYSIS

17.   Premium of Put and Final Call to 6/30/95 Share Price
18.   Illustrative Premium Analysis
19.   Call Price Premium to Unaffected Share Prices
20.   Put Price Implied Multiple and Breakeven Analysis
21.   Call Price Implied Multiple and Breakeven Analysis

SECTION VI  OTHER ANALYSIS

22.   Analysis of Option Components
23.   Analysis of Standstill Agreement

SECTION VII ANALYSIS OF COLLABORATION

24.   Discounted Cash Flow Analysis
25.   License Agreement

<PAGE>   4

PROJECT ACTIVE
Active Stock Price/Volume Analysis
01/01/95 - 06/30/95


<TABLE>
<CAPTION>
 DATES           ACTUAL           VOLUME
              SHARE PRICE
----------------------------------------
 <S>          <C>              <C>
 01/Jan/95      $45.625           90,900
 01/Feb/95       48.125          109,100
 01/Mar/95       50.125          114,900
 01/Apr/95       49.500          750,100
 01/May/95       47.875        3,801,500
 01/Jun/95       48.875          206,700
 30/Jun/95       48.625           66,700
</TABLE>

RELEVANT NEWS IDENTIFIED:

Roche continues to purchase in market: 1.3% over 4 months 01/10/95 to 04/28/95

Activase cleared by FDA 04/03/95

Proposed Transaction announced 05/01/95

<TABLE>
<CAPTION>
 PERIOD                  VOLUME       % OF PUBLIC FLOAT(1)
----------------------------------------------------------           
 <S>                   <C>                 <C>
 05/01/95               3,801,500           9.3%
 05/01/95 - 05/05/95    8,165,700          20.0
 05/01/95 - 05/31/95   12,576,000          30.7
 05/01/95 - 06/30/95   16,712,300          40.8
</TABLE>

Note: (1) Public Float is Non-Roche total shares outstanding on 06/30/95.

<PAGE>   5
PROJECT ACTIVE
Indexed Price Graph
01/01/95 - 06/30/95


<TABLE>
<CAPTION>
                                   BIOTECH INDEX -
    DATE         ACTIVE COMPANY        TIER 1(1)    PARMA INDEX(2)   S&P 400
----------------------------------------------------------------------------
<S>              <C>               <C>              <C>              <C>
 01/Jan/95           100.00            100.00          100.00         100.00
 01/Feb/95           105.48             96.02          104.93         101.39
 01/Mar/95           109.86             99.13          107.01         104.92
 03/Apr/95           108.49             95.33          110.67         109.22
 01/May/95           104.93             96.51          113.28         111.84
 01/Jun/95           107.12             95.38          115.42         115.66
 30/Jun/95           106.58            104.02          119.67         118.66
</TABLE>


Notes:   (1)  Biotech Index - Tier 1 is market capitalization weighted and
              includes Amgen, Biogen, Centocor, Chiron, Genetics Institute,
              Genzyme and Immunex.

         (2)  Pharma Index is market capitalization weighted and includes Abbott
              Laboratories, American Home Products, Bristol-Myers Squibb, Eli
              Lilly, Johnson & Johnson, Merck, Pfizer, Rhone-Poulenc Rorer,
              Schering Plough, Upjohn and Warner Lambert

<PAGE>   6

PROJECT ACTIVE
Active Company Stock Basis Analysis




<TABLE>
<CAPTION>
               100% OF TOTAL    75% OF TOTAL      50% OF TOTAL        25% OF TOTAL       0% OF TOTAL
               TRADED BELOW:    TRADED BELOW:     TRADED BELOW:       TRADED BELOW:     TRADED BELOW:
-----------------------------------------------------------------------------------------------------
<S>            <C>              <C>               <C>                 <C>               <C>
1991 - 1994       $52.375         $47.625           $43.125             $33.875            $20.875
1995 YTD           51.875          49.125            48.125              47.375             45.125
</TABLE>

<TABLE>
<CAPTION>
                                      1991-1994                  1995 YTD
                                -------------------------------------------------
<S>                                   <C>                       <C>
Shares traded as a % of
40,914,426 Non-Roche total
shares outstanding 06/30/95           387.5%                     82.7%
                                -------------------------------------------------
                                      129.2% Annual average     165.4% Annualized
</TABLE>

<PAGE>   7

PROJECT ACTIVE
Research Analysts' Consensus View of Proposed Transaction


-     Active is expected to benefit from the Proposed Transaction

      -      Active can focus on research while Roche assists in development,
             marketing and sales (esp. non-U.S.).

      -      Active's stock will trade less as a financial instrument (e.g.,
             Roche bond) thereby relieving pressure on management to improve
             short-term earnings through cuts in R & D spending and, instead,
             pursue aggressively its R & D programs with its concomitant
             long-term benefits to the Company.

      -      The licensing agreement enables Active to share the cost (and risk)
             of product development with Roche, and to avoid the infrastructure
             costs of developing, marketing and selling products outside the
             U.S. while receiving favorable royalty rates; this should be
             accretive to earnings in the short-term.

-     The impact of the Proposed Transaction on Minority Shareholders is a
      function of their respective orientation

      -      Active stock is expected to trade as a Roche four-year zero coupon
             bond with upside potential bounded by the call prices, enhanced by
             any dividends which may be paid

      -      Such returns, however, are not attractive to biotechnology
             investors ("almost dead money to a biotechnology investor")

      -      The stock, leading up to the announcement of the Proposed
             Transaction, was trading largely on the basis that Roche would
             exercise its call option; such investors are likely to be
             disappointed

<PAGE>   8

PROJECT ACTIVE
Research Analysts' Consensus View of Proposed Transaction
(Continued)


      -      The likelihood that Roche will buy-out the Minority Shareholders
             pursuant to the call option or otherwise appears diminished since
             (i) Roche passed once already; and (ii) Roche may have obtained,
             pursuant to the licensing agreement, Active's most important asset
             (its product pipeline) and may no longer have a need to acquire the
             whole Company

-     Roche is also expected to benefit from the Proposed Transaction

      -      The licensing agreement is believed to be of significant value to
             Roche

      -      The ability to purchase stock in the open market up to 79.9% over
             the next four years will likely reduce the blended cost to Roche of
             buying-out the Minority Shareholders

      -      The new call option provides Roche with more time within which to
             make its decision at a minimal cost

<PAGE>   9
PROJECT ACTIVE
Stock Ownership Profile - June 1995

<TABLE>
<S>             <C>
                ----------------------------
                | Total Shares Outstanding |
                |      118.1 million       |
                ----------------------------
                 |              |
    -------------------       ------------------
    |     Common      |       | Special Common |
    |      67.1       |       |      50.9      |
    | (Held by Roche) |       ------------------
    -------------------               | 
                              --------------------------------
                              |                              |
                            --------------------      ------------------
                            | Other Redeemable |      | Roche Holdings |
                            |       41.4       |      |      9.5       |
                            --------------------      ------------------
                                     | 
                                 ------------------------------------------------------------
                                 |                                                          |
                        ------------------                                           ------------------
                        | Record Holders |                                           | Street Holders |
                        |      6.1       |                                           |      35.3      |
                        |     14.8%      |                                           |      85.2%     |
                        ------------------                                           ------------------
                                |                                                               |
                      ----------------------                                    --------------------------------
                      |                    |                                    |               |              |
-----------------------------        ------------------------       ------------------------  -----------   ----------
|      Active Company       |        | Other Record Holders |       |13F Institutions (156)|  | Foreign |   | Retail |
| Directors & Officers (37) |        |        3.3           |       |       17.4           |  |   3.6   |   |  14.3  |
|          2.8              |        |        8.0%          |       |       41.9%          |  |   8.7%  |   |  34.6% |
|          6.8%             |        ------------------------       ------------------------  -----------   ----------
-----------------------------             |                            |                                        |
                                          |                            |                                        | 
                    -----------------------                -------------                   --------------------------
                    |                |                     |           |                   |                        |
 -------------------------  --------------------    -------------  --------------  ------------------   -------------------------
 | Other Record (19,746) |  | Largest>100K (2) |    | >50K (38) |  | <50K (118) |  | Active Company |   | Other Retail (53,900) |
 |         2.8           |  |      0.5         |    |    16.3   |  |    1.1     |  |      Trip      |   |         14.2          | 
 |         6.8%          |  |      1.2%        |    |    39.2%  |  |    2.7%    |  |       2        |   |        34.2%          |
 -------------------------  --------------------    -------------  --------------  |      0.4%      |    ------------------------
                                                                                   ------------------
</TABLE>

Source: Active Company
<PAGE>   10

PROJECT ACTIVE
13F INSTITUTIONS - June 1995
(Shares in Thousands)


<TABLE>
<S>                          <C>
Fidelity Mgmt. & Res. Corp.   2,071
American Express Fin'l.       1,696
Investors Research Corp.      1,600
Harvard University            1,260
Oppenheimer Mgmt. Corp.       1,040
Putnam Investment Mgmt.         762
T. Rowe Price Associates        707
Travelers                       634
Mentor Partners                 600
Capital Research & Mgmt.        500
Wells Fargo Inst. Tr NA         468
Smith Barney Shearson           413
Clay Finlay Inc.                397
Spears, Benzak & Salomon        378
New Jersey Div. Inv.            374
Wellington Management Co.       358
College Retire Equities         304
Citicorp                        300
Essex Investment Mgmt. Co.      279
Calif. Public Emp. Ret.         240
Mellon Bank Corp.               217
CT Capital                      175
Chancellor                      152
Wilshire Asset                  138
Bjurman George D & Assoc.       135
Gabelli Funds, Inc.             123
Franklin Resources Inc.         122
Salomon Brothers                105
Comerica Inc.                    95
Hudson Capital Advisors          80
RCM Capital Mgmt.                80
Lyon, Stubbs & Tomkins           65
Frank Russell Co. Inc.           60
Calif. State Teachers Ret.       59
Bankers Trust NY Corp.           58
Lubrizol Corp.                   56
PaineWebber Inc.                 52
Sub-total (13F>50K)          16,270
Other institutions (<50K)     1,217
                             ------
         Total               17,487
                               41.9%
</TABLE>

Source: Active Company

<PAGE>   11
PROJECT ACTIVE
Major Changes in Ownership

<TABLE>
<CAPTION>
 INSTITUTION                       ORIENTATION             CURRENT        CHANGE FROM
                                                           POSITION       APRIL, 1995
-------------------------------------------------------------------------------------
 <S>                               <C>                      <C>            <C>
 Harvard University                Growth                   1,260          +1,260
 Oppenheimer Mgmt. Corp.           Growth, Value            1,040            +640
 Mentor Partners                   N/A                        600            +600
 T. Rowe Price                     Growth                     707            +580
 Spears, Benzak & Salomon          N/A                        378            +321
 Salomon Brothers                  Growth                     105            +105
 Everest Capital                   N/A                        100            +100
 Sirach Capital                    N/A                          0            -774
 American Capital                  N/A                         83            -531
 American Express F.S.             N/A                      1,695            -462
 RCM Capital Mgmt.                 Growth                      82            -422
 Fidelity                          Growth, Value, Income    2,071            -401
 Lubrizol                          N/A                         56            -200
 Capital Research                  Value                      500            -163
 WTG & Co., LP                     N/A                          0            -118
 General Accident                  Value                       40            -107
</TABLE>

Source: Active Company

<PAGE>   12
PROJECT ACTIVE
Summary of Valuation Analyses

Current Price 6/30/95: $48.63
Present Value of $60 7/99 Put at 6/30/95 (1): $46.97


<TABLE>
<CAPTION>
                                                        30.0% TO
                                                         60.0%
 SHARE PRICE                        PV OF FUTURE       PREMIUM TO                      THEORETICAL
  52-WEEK          UNAFFECTED        UNAFFECTED        UNAFFECTED       STANDALONE       VALUE OF
   RANGE          SHARE PRICES      SHARE PRICES      SHARE PRICES      DCF VALUE       PACKAGE (5)
 -----------      ------------      ------------      ------------      ----------     ------------
   <S>               <C>               <C>               <C>              <C>             <C>
   $53.50            $45.00            $38.00            $64.00           $56.00          $51.50
    42.13             35.00             32.00             52.00            41.00           47.00

</TABLE>


<TABLE>
<CAPTION> 
                                                                                       30.0% TO
                                                                       PV OF            60.0%  
                                                                      FUTURE          PREMIUM TO                      THEORETICAL
                                  SHARE PRICE      UNAFFECTED       UNAFFECTED        UNAFFECTED      STANDALONE        VALUE OF
                                 52-WEEK RANGE    SHARE PRICES     SHARE PRICES      SHARE PRICES      DCF VALUE      PACKAGE (5)
                                 -------------    -------------    --------------    ------------    -------------    ------------
<S>                              <C>              <C>              <C>               <C>             <C>              <C>
Prem/(Disc) to Unaffected (2)      5.3%  33.8%    -12.5%  12.5%    -20.0%   -5.0%    30.0%  60.0%      2.5%  40.0%    17.5%  28.8%
Prem/(Disc) to Current ($48.63)  -13.4%  10.0%    -28.0%  -7.5%    -34.2%  -21.9%     6.9%  31.6%    -15.7%  15.2%    -3.3%   5.9%
Forward P/E Multiple (3)          28.1x  35.7x     23.3x  30.0x     21.3x   25.3x    34.7x  42.7x     27.3x  37.3x    31.3x  34.3x
LTM Revenues Multiple (4)          5.3x   6.9x      4.3x   5.7x      3.8x    4.7x     6.7x   8.4x      5.1x   7.2x     6.0x   6.6x

</TABLE>

Notes:  (1) Present value of $60 7/99 Put based on a four year AA bond rate of
            6.31% on 6/30/95.
        (2) Assuming an Unaffected Share Price of $40 per share.
        (3) Forward P/E multiple applied to 1996 EPS of $1.50 as per Management
            Estimates.
        (4) Assumes Aggregate Value based on 117.6 million shares as of March
            31, 1995 and Net Debt of -$547.2 million. Latest Twelve-Month 
            Revenues were $835.5 million.
        (5) Based on a Black-Scholes option calculation.

<PAGE>   13
PROJECT ACTIVE
Comparison of Active Company Projections
($MM, except per share data)


<TABLE>
<CAPTION>
                                                                           PROJECTIONS                          CAGR     
                                         ACTUAL   -----------------------------------------------------------   1995-    
REVENUES                                  1994     1995     1996      1997       1998       1999       2000     2000     
---------------------------------------  ------   ------   ------   --------   --------   --------   --------   -----     
<S>                                      <C>      <C>      <C>      <C>        <C>        <C>        <C>        <C>      
  Management Projections(1)              $752.6   $874.0   $950.0   $1,101.0   $1,279.0   $1,482.0   $1,817.0   15.8%    
  Average of "Street" Estimates(2)        752.6    885.2    959.3    1,127.0    1,330.8    1,355.0       N.A.   12.5% (3) 
    % DIFFERENCE FROM "STREET"             0.0%    -1.3%    -1.0%      -2.3%      -3.9%       9.4%       N.M.    N.M.     
                                                                                                                         
RESEARCH & DEVELOPMENT                                                                                                   
---------------------------------------                                                                                  
  Management Projections(1)              $314.3   $364.0   $391.0     $414.0     $420.0     $423.0     $449.0    3.8%    
  Average of "Street" Estimates(2)        314.3    357.9    369.0      390.1      415.1      380.0       N.A.    2.4% (3) 
    % DIFFERENCE FROM "STREET"             0.0%     1.7%     6.0%       6.1%       1.2%      11.3%       N.M.    N.M.     
                                                                                                                         
EPS                                                                                                                      
---------------------------------------                                                                                  
  Management Projections(1)              $1.04    $1.35     $1.50     $1.64       $2.00      $2.48      $3.55   20.5%    
  Average of "Street" Estimates(2)        1.04     1.31      1.43      1.91        2.25       2.70       N.A.   20.9% (3) 
    % DIFFERENCE FROM "STREET"            0.0%     3.1%      4.9%    -14.1%      -11.1%      -8.1%       N.M.    N.M.     
  I/B/E/S(4)                             $1.04    $1.30     $1.40     $1.75       $2.10      $2.52      $3.02   19.3%    
    % DIFFERENCE FROM "STREET"            0.0%     3.8%      7.1%     -6.3%       -4.8%      -1.6%      17.4%    N.M.     
                                                                                
</TABLE>
           
 NOTES:
    (1) Based on Active Company Standalone projections for 1995 through 2000.
    (2) "Street" Consensus reflects the average estimates of several research
        analysts prior to May 1, 1995.
    (3) CAGR represents five-year period from 1995 through 1999.
    (4) Based on I/B/E/S estimates dated June 24, 1995.
           
<PAGE>   14

PROJECT ACTIVE
Comparison of Active Company Standalone vs. Collaboration
($MM, except per share data)

<TABLE>
<CAPTION>
                                                                PROJECTIONS                                 CAGR
                                        ----------------------------------------------------------------    1995-
REVENUES                                 1995      1996       1997        1998        1999        2000      2000
------------------------------------    ------    ------    --------    --------    --------    --------    -----
  <S>                                    <C>       <C>       <C>         <C>         <C>         <C>        <C>
  Management Standalone(1)               $874.0    $950.0    $1,101.0    $1,279.0    $1,482.0    $1,817.0   15.8%
  Management with Collaboration(2)        948.0     985.0     1,106.0     1,193.0     1.334.0     1,585.0    9.1%
     % DIFFERENCE FROM COLLABORATION      -7.8%     -3.6%       -0.5%        7.2%       11.1%       14.6%

NET INCOME
------------------------------------
  Management Standalone(1)               $165.0    $185.0      $208.0      $255.0      $325.0      $469.0   22.6%
  Management With Collaboration(2)        228.0     259.0       276.0       299.0       336.0       447.0    9.6%
     % DIFFERENCE FROM COLLABORATION     -27.6%    -28.6%      -24.6%      -14.7%       -3.3%        4.9%

EPS
------------------------------------
  Management Standalone(1)                $1.35     $1.50       $1.64       $2.00       $2.48       $3.55   20.5%
  Management With Collaboration(2)         1.87      2.10        2.19        2.33        2.57        3.38    7.7%
     % DIFFERENCE FROM COLLABORATION     -27.8%    -28.6%      -25.1%      -14.2%       -3.5%        5.0%
  I/B/E/S(3)                              $1.30     $1.40       $1.75       $2.10       $2.52       $3.02   19.3%
     % DIFFERENCE FROM COLLABORATION      43.8%     50.0%       25.1%       11.0%        2.0%       11.8%

</TABLE>


NOTES:
   (1) Based on Active Company Standalone projections for 1995 through 2000.
   (2) Based on Active Company with Collaboration projections for 1995 through
       2000.
   (3) Based on I/B/E/S estimates dated June 24, 1995.


<PAGE>   15
PROJECT ACTIVE
Forward P/E to 5-Yr. EPS Growth Relationship
Biotech

<TABLE>
<CAPTION>
COMPANY NAME                          5-YR. EPS GROWTH (1)    1996E PRICE/EARNINGS (2)
------------                          --------------------    ------------------------     
<S>                                         <C>                       <C>
Active Company                              20.0%                     33.8x   
Amgen                                       15.0                      18.3
Biogen                                      35.0                      38.0
Centocor                                    30.0                      55.1
Chiron                                      30.0                      52.0
Genzyme                                     20.0                      17.0
Active Company @ $40 per share              20.0                      28.6
S&P 500                                      7.0                      15.0

Regression                                  R(2) 
Includes Active Company                     57.7%
Excludes Active Company                     62.4

</TABLE>

Notes: (1) Based on I/B/E/S estimates as of June 24, 1995.
       (2) P/E based on I/B/E/S estimates as of June 24, 1995 and June 30, 1995
           closing prices.
    <PAGE>   16
PROJECT ACTIVE
Forward P/E to 5-Yr. EPS Growth Relationship
U.S. Pharma

<TABLE>
<CAPTION>

    COMPANY NAME         5-YR. EPS GROWTH (1)   1996E PRICE/EARNINGS (2)
    ------------         -------------------   -----------------------
<S>                            <C>                     <C>
Abbott Laboratory              13.0%                   16.9x
American Home Products          8.0                    13.8
Amgen                          15.0                    18.3
Bristol Myers Squibb            7.0                    12.9
Eli Lilly                       9.0                    15.4
Johnson & Johnson              12.0                    16.5
Merck                          11.0                    16.4
Pfizer                         14.0                    16.2
Rhone-Poulenc Rorer            10.0                    11.8
Schering-Plough                11.5                    14.5
Upjohn                          4.0                    13.9
Warner Lambert                  8.0                    14.5
S&P 500                         7.0                    15.0

Regression                     R(2)=50.6%

</TABLE>

Notes:  (1) Based on I/B/E/S estimates as of June 24, 1995.
        (2) P/E based on I/B/E/S estimates as of June 24, 1995 and June 30,
            1995 closing prices.

<PAGE>   17
PROJECT ACTIVE
U.S. Biotechnology Equity Market Trading Valuation (1)

<TABLE>
<CAPTION>
               MARKET      MARKET                         PRICE/EARNINGS
               VALUE       PRICE      --------------------------------------------------------------
Company         [MM]      CURRENT     L12M    1995E(2)   1996E(2)    1997E(2)    1998E(2)    1999E(2)    
-------        ------     -------     ----    --------   --------    --------    --------    --------
<S>            <C>        <C>         <C>     <C>         <C>         <C>         <C>         <C>
Amgen          $10,646    $80.44      33.4 x   21.2 x     18.3 x      16.0 x      13.9 x      12.1 x
Biogen           1,483     44.50      N.M.    370.8       38.0        17.9        13.3         9.8
Centocor           833     14.31      N.M.     N.M.       55.1        10.1         7.8         6.0
Chiron           2,603     65.00      N.M.     N.M.       52.0        32.5        25.0        19.2
Genzyme          1,064     40.00      31.5     21.6       17.2        15.4        12.8        10.7
Immunex            515     13.00      N.M.     N.M.       N.M.        35.1        29.3        24.4
</TABLE>


<TABLE>
<CAPTION>               
                                              3-YEAR        3-YEAR      5-YEAR     1996E P/E/
                                AGGREGATE    HISTORICAL   HISTORICAL   PROJECTED      5-YR.
                  TECHNOLOGY     VALUE/       REVENUE        EPS         EPS        PROJECTED                               
Company            VALUE(3)    REVENUES(4)    GROWTH        GROWTH      GROWTH     EPS GROWTH
-------           ----------   -----------   ----------   ----------   --------    ----------
<S>               <C>          <C>           <C>          <C>          <C>         <C>  
Amgen             1.08 x        5.94 x        22.8 %      N.M. %       15.0%       1.22 x    
Biogen            1.24          9.31           7.6        N.M.         35.0        1.09 
Centocor          1.26         13.49         -27.0        N.M.         30.0        1.84
Chiron            1.08          2.72          35.8        N.M.         30.0        1.73
Genzyme           1.03          3.63          19.2        N.M.         20.0        0.86
Immunex           1.04          3.51          42.7        N.M.         20.0        N.M.
</TABLE>


<TABLE>
---------------------------------------------------------------------------------
/ <S>                <C>       <C>        <C>       <C>       <C>       <C>    /
/ Mean:              32.4 x    137.9 x    36.1 x    21.2 x    17.0 x    13.7 x /
/ Median:             0.0       10.6      28.2      17.0      13.6      11.4   /
---------------------------------------------------------------------------------

---------------------------------------------------------------------------------
/ <S>                <C>       <C>        <C>       <C>       <C>       <C>     /
/ Mean:               1.12x     6.43 x    16.8%     N.M.%     25.0%     1.35 x  /
/ Median:             1.08      4.78      21.8      N.M.      25.0      1.15    /
---------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
                MARKET     MARKET                         PRICE/EARNINGS
                VALUE      PRICE      --------------------------------------------------------------
Company          [MM]     CURRENT     L12M    1995E(2)   1996E(2)    1997E(2)    1998E(2)    1999E(2)    
-------         ------    -------     ----    --------   --------    --------    --------    --------
<S>             <C>       <C>         <C>      <C>        <C>         <C>         <C>         <C>       
Active Company  $5,717    $48.63      45.4 x   37.4 X     34.7 x      27.8 x      23.2 x      19.3 x   
                 4,115     35.00 (5)  32.7     26.9       25.0        20.0        16.7        13.9
                 4,703     40.00 (5)  37.4     30.8       28.6        22.9        19.0        15.9
                 5,291     45.00 (5)  42.1     34.6       32.1        25.7        21.4        17.9
</TABLE>


<TABLE>
<CAPTION>
                                               3-YEAR       3-YEAR      5-YEAR     1996E P/E/
                                AGGREGATE    HISTORICAL   HISTORICAL   PROJECTED      5-YR.
                  TECHNOLOGY     VALUE/       REVENUE         EPS         EPS       PROJECTED                               
Company            VALUE(3)    REVENUES(4)    GROWTH        GROWTH      GROWTH     EPS GROWTH
-------           ----------   -----------   ----------   ----------   --------    ----------
<S>               <C>          <C>           <C>          <C>          <C>         <C>                
Active Company    1.14 x       6.55 x        20.9 %       140.4%       22.0 %      1.74 x
                  1.21         6.35          20.9         140.4        20.0        1.25 
                  1.18         7.10          20.9         140.4        20.0        1.43
                  1.16         7.84          20.9         140.4        20.0        1.61 
                                 
    
</TABLE>

Notes:
------
(1) Based on closing prices as of June 30, 1995 and latest publicly available 
    annual and 10Q.
(2) Based on I/B/E/S estimates as of June 24, 1995.
(3) Technology Value equals Market Value divided by Market Value minus Cash.
(4) Revenues equals revenues minus interest income.
(5) Values represent unaffected share prices.

<PAGE>   18
PROJECT ACTIVE
U.S. Pharmaceutical Industry Equity Market Trading Valuation (1)
($MM)
<TABLE>

                                    Market           Price / Earnings
                          Market    Price       --------------------------  Agg Value/
      Company             Value     Current     1994E   1995E(2)   1996(2)  Revenues
----------------------    -------   -------     -----   --------   -------  ----------
                          ($MM)
<S>                       <C>        <C>        <C>     <C>        <C>      <C>  

Merck                     $60,753    $49.13      20.4x    18.3x     16.4x     3.9x 
Johnson & Johnson          45,561     67.50      20.5     18.7      16.5      2.7
Bristol-Myers Squibb       34,540     68.13      14.5     13.6      12.9      2.7
Abbott Laboratories        32,922     40.50      20.9     19.0      16.9      3.5
Pfizer                     29,091     92.13      20.9     18.8      16.2      3.5
American Home Products     23,842     77.38      14.9     16.3      13.0      3.1
Eli Lilly                  22,958     78.50      17.0     17.3      15.4      4.4
Schering-Plough            16,418     44.13       8.8     16.2      14.5      3.6
Warner-Lambert             11,645     86.38      16.5     15.7      14.5      1.9
Amgent                     10,646     80.44      27.3     21.2      18.3      5.9
Upjohn                      6,500     37.63      13.2     14.2      13.9      1.9
Rhone-Poulenc Rorer         5,483     40.88      14.9     12.8      11.8      1.5

-----------------------------------------------------------------------------------------------------------
/          Mean:                                 17.4x    16.8x     15.1%     3.2%                        /
/          Median:                               16.7     16.8      15.0      3.9                         /
-----------------------------------------------------------------------------------------------------------

                        
                            3-Yr          3-Yr        5-Yr        1996E P/E/
                          Historical   Historical   Projected       5-Yr        Dividend
                            Sales         EPS         EPS         Projected      Payout      R&D/      EBIT
     Company               Growth       Growth       Growth(1)  EPS Growth(2)     Ratio    Revenues   Margin
----------------------    ----------   ----------   ---------   -------------   --------   --------   ------
<S>                       <C>          <C>          <C>         <C>             <C>        <C>        <C>

Merck                      24.5%        10.8%         11.0%         1.49x         48.5%      8.2%     28.8%
Johnson & Johnson           7.0         11.1          12.0          1.37          35.3       8.1      18.4
Bristol-Myers Squibb        3.6         22.5           7.0          1.84          62.4       9.1      26.7
Abbott Laboratories         8.0         12.2          13.0          1.30          39.3      10.4      23.3       
Pfizer                      7.0         32.2          14.0          1.16          45.0      13.8      23.9
American Home Products      6.7         17.5           8.0          1.73          56.8       9.4      22.1
Eli Lilly                   7.3          7.5           9.0          1.71          54.5      14.7      30.6
Schering-Plough             7.2         13.2          11.5          1.26          40.9      13.2      27.3
Warner-Lambert              7.1          9.8           8.0          1.81          47.2       7.2      16.2
Amgent                     22.8         12.5          15.0          1.22           0.0      21.1      42.7 
Upjohn                      0.9         (4.9)          4.0          3.48          53.2      17.5      19.0
Rhone-Poulenc Rorer         1.0         (4.4)         10.0          1.18          45.3      14.6      16.4

-----------------------------------------------------------------------------------------------------------
           Mean:            8.6%        11.2%         10.2%         1.69x         44.0%     12.3%     24.6%   
           Median:         (7.9)         5.7          10.5          1.43          46.3      11.8      23.6
-----------------------------------------------------------------------------------------------------------
</TABLE>

NOTES:
(1) Based on closing prices as of June 30, 1995 and latest publicly available
    annual and 10-Q.
(2) Based on I/B/E/S estimates as of June 24, 1995.
<PAGE>   19
PROJECT ACTIVE
Preliminary Analysis of Unaffected Share Price
($MM)

<TABLE>
<CAPTION>
                          Price
                           Per      Equity     Agg.      Prem/(Disc)
                          Share    Value(1)   Value(2)   Current(3)
                          ------   --------   --------   -----------
<S>                       <C>       <C>        <C>          <C>
                                    $5,717     $5,170      $48.63

                          $20.00    $2,352     $1,804      -58.9%
--------------------------------------------------------------------
Mean Pharma 1996 P/E       22.50     2,646      2,098      -53.7%
--------------------------------------------------------------------
                           25.00     2,940      2,392      -48.6%
--------------------------------------------------------------------
Amgen 1996 P/E             27.50     3,233      2,686      -43.4%
--------------------------------------------------------------------
                           30.00     3,527      2,980      -38.3%
                           32.50     3,821      3,274      -33.2%
--------------------------------------------------------------------
   UNAFFECTED              35.00     4,115      3,568      -28.0%
   SHARE PRICE             37.50     4,409      3,862      -22.9%
     RANGE                 40.00     4,703      4,156      -17.7%
                           42.50     4,997      4,450      -12.6%
                           45.00     5,291      4,744       -7.5%
--------------------------------------------------------------------
                           47.50     5,585      5,038       -2.3%
--------------------------------------------------------------------
Current Price (6/30/95)    48.63     5,717      5,170        0.0%
--------------------------------------------------------------------
                           50.00     5,879      5,332        2.8%
--------------------------------------------------------------------
Chiron 1997 P/E            52.50     6,173      5,626        8.0%
--------------------------------------------------------------------
                           55.00     6,467      5,920       13.1%
                           57.50     6,761      6.214       18.3%
                           60.00     7,055      6,508       23.4%
                           62.50     7,349      6,802       28.5%
                           65.00     7,643      7,096       33.7%


<CAPTION>
                                                   PRICE TO EARNINGS RATIO
                          --------------------------------------------------------------------------   AGGREGATE VALUE/
                                     1995E(4)(5)       1996E(4)(5)      1996E P/E      1997E(4)(5)         REVENUE
                          ACTUAL   ---------------   ---------------    ----------   ---------------   ----------------
                           LTM     I/B/E/S   Mgmnt   I/B/E/S   Mgmnt    5 Yr Grwth   I/B/E/S   Mgmnt    LTM    1995E(5)
                          ------   -------   -----   -------   -----    ----------   -------   -----   -----   --------
<S>                       <C>       <C>      <C>      <C>      <C>        <C>         <C>      <C>     <C>      <C>
                          $1.07     $1.30    $1.35    $1.40    $1.50      20.0%       $1.75    $1.64   $835     $932

                           18.7x     15.4x    14.8x    14.3x    13.3x      0.7x        11.4x    12.2x   2.2x     1.9x
-----------------------------------------------------------------------------------------------------------------------
Mean Pharma 1996 P/E       21.0      17.3     16.7     16.1     15.0       0.8         12.9     13.7    2.5      2.3
-----------------------------------------------------------------------------------------------------------------------
                           23.4      19.2     18.5     17.9     16.7       0.8         14.3     15.2    2.9      2.6
-----------------------------------------------------------------------------------------------------------------------
Amgen 1996 P/E             25.7      21.2     20.4     19.6     18.3       0.9         15.7     16.8    3.2      2.9
-----------------------------------------------------------------------------------------------------------------------
                           28.0      23.1     22.2     21.4     20.0       1.0         17.1     18.3    3.6      3.2
                           30.4      25.0     24.1     23.2     21.7       1.1         18.6     19.8    3.9      3.5
-----------------------------------------------------------------------------------------------------------------------
   UNAFFECTED              32.7      26.9     25.9     25.0     23.3       1.2         20.0     21.3    4.3      3.8
   SHARE PRICE             35.0      28.8     27.8     26.8     25.0       1.3         21.4     22.9    4.6      4.1
     RANGE                 37.4      30.8     29.6     28.6     26.7       1.3         22.9     24.4    5.0      4.5
                           39.7      32.7     31.5     30.4     28.3       1.4         24.3     25.9    5.3      4.8
                           42.1      34.6     33.3     32.1     30.0       1.5         25.7     27.4    5.7      5.1
-----------------------------------------------------------------------------------------------------------------------
                           44.4      36.5     35.2     33.9     31.7       1.6         27.1     29.0    6.0      5.4
-----------------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)    45.4      37.4     36.0     34.7     32.4       1.6         27.8     29.6    6.2      5.5
----------------------------------------------------------------------------------------------------------------------- 
                           46.7      38.5     37.0     35.7     33.3       1.7         28.6     30.5    6.4      5.7
-----------------------------------------------------------------------------------------------------------------------
Chiron 1997 P/E            49.1      40.4     38.9     37.5     35.0       1.8         30.0     32.0    6.7      6.0
----------------------------------------------------------------------------------------------------------------------
                           51.4      42.3     40.7     39.3     36.7       1.8         31.4     33.5    7.1      6.4
                           53.7      44.2     42.6     41.1     38.3       1.9         32.9     35.1    7.4      6.7
                           56.1      46.2     44.4     42.9     40.0       2.0         34.3     36.6    7.8      7.0
                           58.4      48.1     46.3     44.6     41.7       2.1         35.7     38.1    8.1      7.3
                           60.7      50.0     48.1     46.4     43.3       2.2         37.1     39.6    8.5      7.6

</TABLE>

NOTES:
(1) Assumes 117.6 million shares outstanding as of March 31, 1995.
(2) Aggregate Value is equal to Equity Value plus Net Debt of -$547.2 million 
    as per the 10-Q dated March 31, 1995.
(3) Assumes an Active Company share price of $48.63 on June 30, 1995.
(4) Based on June 24, 1995 I/B/E/S estimates for EPS of $1.30, $1.40, and $1.75
    for 1995, 1996, and 1997, respectively.
(5) Management estimates are projections by Active Company Management.


<PAGE>   20
PROJECT ACTIVE
Present Value of Future Share Prices
Standalone


<TABLE>
<CAPTION>
                                      MANAGEMENT'S EARNINGS PER SHARE PROJECTIONS/YTY% GROWTH
                                     ----------------------------------------------------------
                                      1995       1996      1997      1998       1999       2000
                                      ----       ----      ----      ----       ----       ----
                                      <S>       <C>       <C>       <C>        <C>        <C>
                                     $1.35      $1.50     $1.64      $2.00     $2.48      $3.55
                                     29.8%      11.1%      9.3%      22.0%     24.0%      43.1%

<CAPTION>
                                     AVERAGE OF "STREET" EARNINGS PER SHARE ESTIMATES/YTY% GROWTH
                                     ------------------------------------------------------------
                                      1995       1996      1997      1998       1999       2000
                                      ----       ----      ----      ----       ----       ----
                                      <S>       <C>       <C>       <C>        <C>        <C>
                                     $1.31      $1.43     $1.91      $2.25     $2.70       N/A 
                                     26.0%       5.9%     33.6%      17.8%     20.0%       NM
</TABLE>



<TABLE>
<CAPTION>
PRESENT VALUE AT 6/30/95                    PRESENT VALUE OF 1996 SHARE PRICE                   PRESENT VALUE OF 1997 SHARE PRICE
------------------------                    ---------------------------------                   ---------------------------------
FORWARD         DISCOUNT                    DOWN 10%     1997 EPS      UP 10%                   DOWN 10%     1998 EPS      UP 10%
  P/E             RATE                      --------     --------      ------                   --------     --------      ------
--------        --------                      $1.48        $1.64        $1.80                     $1.80        $2.00        $2.20
<S>              <C>                        <C>           <C>          <C>                      <C>           <C>          <C>

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $21          $23          $25                       $25          $28          $31
    14  x         17.0%                          18           20           22                        18           20           22
                  25.0%                          17           18           20                        16           18           20
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $24          $26          $29                       $29          $32          $35
    16  x         17.0%                          20           22           25                        21           23           26
                  25.0%                          19           21           23                        18           20           23
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $27          $30          $32                       $32          $36          $40
    18  x         17.0%                          23           25           28                        24           26           29
                  25.5%                          21           24           26                        21           23           25
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $30          $33          $36                       $36          $40          $44
    20  x         17.0%                          25           28           31                        26           29           32
                  25.0%                          24           26           29                        23           26           28
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $32          $36          $40                       $40          $44          $48
    22  x         17.0%                          28           31           34                        29           32           35
                  25.0%                          26           29           32                        25           28           31
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $35          $39          $43                       $43          $48          $53
    24  x         17.0%                          30           34           37                        32           35           39
                  25.0%                          28           31           35                        28           31           34
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $38          $43          $47                       $47          $52          $57
    26  x         17.0%                          33           36           40                        34           38           42
                  25.0%                          31           34           38                        30           33           37
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $41          $46          $51                       $50          $56          $62
    28  x         17.0%                          35           39           43                        37           41           45
                  25.0%                          33           37           40                        32           36           39
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $44          $49          $54                       $54          $60          $66
    30  x         17.0%                          38           42           46                        39           44           48
                  25.0%                          35           39           43                        35           38           42
---------------------------------------------------------------------------------------------------------------------------------

<CAPTION>
PRESENT VALUE AT 6/30/95                    PRESENT VALUE OF 1998 SHARE PRICE                   PRESENT VALUE OF 1999 SHARE PRICE
------------------------                    ---------------------------------                   ---------------------------------
FORWARD         DISCOUNT                    DOWN 10%     1999 EPS      UP 10%                   DOWN 10%     2000 EPS      UP 10%
  P/E             RATE                      --------     --------      ------                   --------     --------      ------
--------        --------                      $2.23        $2.48        $2.73                     $3.20        $3.55        $3.91
<S>              <C>                        <C>           <C>          <C>                      <C>           <C>          <C>

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $31          $35          $38                       $45          $50          $55
    14  x         17.0%                          20           22           24                        24           27           29
                  25.0%                          16           18           20                        18           20           22
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $36          $40          $44                       $51          $57          $62
    16  x         17.0%                          22           25           27                        27           30           33
                  25.0%                          18           20           22                        21           23           26
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $40          $45          $49                       $58          $64          $70
    18  x         17.0%                          25           28           31                        31           34           38
                  25.5%                          21           23           25                        24           25           29
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $45          $50          $55                       $64          $71          $78
    20  x         17.0%                          28           31           34                        34           38           42
                  25.0%                          23           25           28                        26           29           32
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $49          $55          $60                       $70          $78          $86
    22  x         17.0%                          31           34           37                        38           42           46
                  25.0%                          25           28           31                        29           32           35
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $54          $60          $65                       $77          $85          $94
    24  x         17.0%                          33           37           41                        41           45           50
                  25.0%                          27           30           34                        31           35           38
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $58          $64          $71                       $83          $92         $102
    26  x         17.0%                          36           40           44                        44           49           54
                  25.0%                          30           33           36                        34           38           42
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $62          $69          $76                       $89          $99         $109
    28  x         17.0%                          39           43           48                        48           53           58
                  25.0%                          32           36           39                        37           41           45
---------------------------------------------------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------------------------------------------------
                   0.0%                         $67          $74          $82                       $96         $107         $117
    30  x         17.0%                          42           46           51                        51           57           63
                  25.0%                          34           38           42                        39           44           48
---------------------------------------------------------------------------------------------------------------------------------

</TABLE>

<PAGE>   21
PROJECT ACTIVE
Summary of Premia Paid in Selected Precedent Transactions
Partial Sale Transactions -- Cash Tender

<TABLE>
<CAPTION>
                                                                PREMIA PAID                                         AVERAGE
                                -----------------------------------------------------------------------------    -------------
                                                                  APPLIED          GENETICS
   PERIOD (1)                   ACTIVE COMPANY     CHIRON       IMMUNE SCI.       INSTITUTE       SYSTEMIX
------------------------        --------------  -------------  --------------   --------------  -------------
<S>                                 <C>            <C>             <C>              <C>             <C>             <C>
12 Month Average                     82.6%          68.3%           83.9%            34.5%            --  %          67.3%

6 Month Average                      73.7           87.9            76.1             46.5             --             71.0

3 Month Average                      69.5           81.6            81.8             52.0             97.7           76.5

1 Month Average                      69.5           88.0            76.7             39.4             99.1           74.5

One Month Prior                      64.6           91.8           100.0             50.4            101.4           81.6

1 Day Prior                          65.5           95.8            57.9             31.6            110.5           72.3

LTM High Close                       56.5           23.0            39.5            (19.4)            27.3           25.4

LTM Low Close                       110.2          125.5           166.7             75.4            268.4          149.3


-----------------------------------------------------------------------------------------------------------------------------
AVERAGE IMPLIED
   PREMIUM                           74.0%          82.7%           85.3%            38.8%           117.4%          79.7%
-----------------------------------------------------------------------------------------------------------------------------
</TABLE>



Note:    (1)   Period ends one day prior to announcement date of transaction.

         (2)   Period ends 5/1/95.
<PAGE>   22
PROJECT ACTIVE
Summary of Premia Paid in Selected Precedent Transactions
Partial Sale Transactions -- Blended Value

<TABLE>
<CAPTION>
                                                                BLENDED VALUE AS A PREMIUM                          AVERAGE
                                -----------------------------------------------------------------------------    -------------
                                                                  APPLIED          GENETICS
   PERIOD (1)                   ACTIVE COMPANY     CHIRON       IMMUNE SCI.       INSTITUTE       SYSTEMIX
------------------------        --------------  -------------  --------------   --------------  -------------
<S>                                 <C>            <C>             <C>              <C>             <C>             <C>
12 Month Average                     47.1%          13.8%           21.4%             1.9%            --  %          21.1%

6 Month Average                      39.9           27.0            16.2             11.0             --             23.5

3 Month Average                      36.5           22.8            20.0             15.1             56.1           30.1

1 Month Average                      36.5           27.1            16.6              5.6             57.1           28.6

One Month Prior                      32.6           29.7            32.0             13.9             59.0           33.4

1 Day Prior                          33.3           32.4             4.2             (0.3)            66.2           27.2

LTM High Close                       26.1          (16.8)           (7.9)           (38.9)             0.5           (7.4)

LTM Low Close                        69.3           52.5            76.0             32.9            190.8           84.3


-----------------------------------------------------------------------------------------------------------------------------
AVERAGE IMPLIED                      40.2%          23.6%           22.3%             5.1%            53.7%          29.0%
   PREMIUM                                                                                                                
-----------------------------------------------------------------------------------------------------------------------------
</TABLE>



Note:    (1)   Period ends one day prior to announcement date of transaction.

         (2)   Period ends 5/1/95.
<PAGE>   23
PROJECT ACTIVE
Summary of Premia Paid in Selected Precedent Transactions
100% Sale Transactions

<TABLE>
<CAPTION>
                                                              PREMIA PAID                                           AVERAGE
                                -----------------------------------------------------------------------------    -------------
                                                              
   PERIOD (1)          VIAGENE       AFFYMAX      SYNERGEN          SPHINX          GLYCOMED         VESTAR
-----------------    -----------   ------------  --------------   --------------  -------------     ---------
<S>                     <C>            <C>           <C>             <C>             <C>             <C>            <C>
12 Month Average        91.5%          93.6%          3.0%            76.9%            29.9%           4.5%          49.9%

6 Month Average         85.7           83.3          47.2            105.0             66.7           10.9           66.5

3 Month Average         52.8           73.7          81.6            113.8             53.9           18.4           65.7

1 Month Average         50.2           72.1          77.0            118.7             43.6           28.7           65.0

One Month Prior         44.7           62.2          72.1            100.0             50.7           21.2           58.5

1 Day Prior             64.8           66.7          72.1            108.7             30.5           28.8           61.9

LTM High Close          20.1           57.9         (35.7)            10.3            (45.3)         (17.3)          -1.7

LTM Low Close          162.5          160.9         120.9            140.0            126.1           43.6          125.7


-----------------------------------------------------------------------------------------------------------------------------
AVERAGE IMPLIED         71.5%          83.8%         54.8%            96.7%            44.5%          17.3%          61.4%
   PREMIUM                                                                                                                
-----------------------------------------------------------------------------------------------------------------------------
</TABLE>



Note:    (1)   Period ends one day prior to announcement date of transaction.

         (2)   Period ends 5/1/95.
<PAGE>   24
PROJECT ACTIVE
Selected Transactions in the Biotechnology Sector


<TABLE>
<CAPTION>
                                                                                                   Applied
                                                                                                    Immune
                   Viagene/   Glycomed/   Affymax/   Chiron/   Synergen/   Vestar/   Sphinx/ Eli   Sciences/   
                   Chiron(2)   Ligand      Glaxo     Ciba(3)     Amgen     NeXagen      Lilly       RPR(3)       Nova/   
                     4/95       2/95       1/95      11/94       11/94      10/94       3/94        6/93       Scios 5/92
<S>                <C>          <C>        <C>        <C>         <C>        <C>        <C>        <C>           <C>

% Premiums to        54%        51%        62%        30%         72%        21%        100%        32%          (22%)
Unaffected                                            92                                           100            
Market Price(1)

                   MEDIAN       62%(5)

                   MEDIAN       47%(6)
</TABLE>

<TABLE>
<CAPTION>
                              Genetics
                  SyStemix/  Institute/    Cetus/   Genetech/
                   Sandoz(3)   AHP(3)    Chiron(4)   Roche(3)
                    12/91       9/91       7/91       2/90
<S>                <C>          <C>        <C>        <C>

% Premiums to        59%        14%        47%        33%
Unaffected          101         50                    65
Market Price(1) 
</TABLE>

Notes:    (1)  Premium represents offer price over unaffected market price.
               Unaffected market price defined as the closing market price one
               month prior to announcement.

          (2)  Premium to unaffected 2 months prior to transaction announcement
               to factor out acquisition in Viagene share price.

          (3)  In less than 100% purchased transactions, premium represent cash
               offer price over unaffected market price. Lower premium
               represents "blended value" over unaffected market price. "Blended
               value" defined as market price one week prior to closing.

          (4)  Premium to unaffected 6 months prior to transaction to factor out
               acquisition speculation in Cetus share price.

          (5)  Median of all premiums using premium paid and cash tender for
               partial deals.

          (6)  Median of all premiums using premium of blended value for 
               partial deals.

<PAGE>   25
PROJECT ACTIVE
Premiums Paid in Selected Pharmaceutical M&A Transactions (1)


<TABLE>
<CAPTION>
                                                             Premium Paid               Multiples
                                                                Over        -------------------------------------
Announcement                                        Equity    Unaffected      LTM          LTM        Forward Net
    Date          Acquiree           Acquiror        Value      Price(2)     Sales      Net Income      Income(3)
------------   ---------------    --------------   ---------  ----------  ------------  ----------    -----------
                                                     ($Bn)
  <S>          <C>                <C>                <C>         <C>          <C>          <C>           <C>
  02/28/95     Marion Merrell     Hoechst AG         $ 7.2       51%(5)       2.3x         16.4x         19.8x
               Dow
  01/23/95     Wellcome plc(4)    Glaxo plc           15.2       51           4.2          23.2          21.0
  08/01/94     American           American Home        9.4       84           2.1          24.9          20.9
               Cyanamid           Products
  05/02/94     Syntex             Roche Holdings       5.3       73           2.5          10.5          20.3
  01/15/90     Rorer              Rhone-Poulenc        3.4       63           3.2          42.4          N.A.
  07/27/89     Squibb             Bristol-Myers       12.2       56           4.7          27.9          20.8
  07/17/89     Marion Labs        Dow Chemical         5.9       52           6.1          26.0          N.A.
  04/17/89     SmithKline         Beecham Group        8.9       37           2.1          18.0          16.9
               Beckman
  01/22/88     Sterling Drug      Eastman Kodak        5.2       95           2.4          27.7          23.2
                                                        ---------------------------------------------------------
                                                          Mean:  62           3.3x         24.1x         20.4x
                                                        Median:  56           2.5          24.9          20.3
                                                        ---------------------------------------------------------
</TABLE>

Notes:    (1)  Excludes transactions involving pharmaceutical benefit
               management, clinical diagnostic and generic drug companies.

          (2)  Defined as the price one month prior to announcement.

          (3)  Forward Net Income multiples based on I/B/E/S estimates for
               forward year earnings at time of deal announcement.

          (4)  Announced, not closed.

          (5)  Based on assumed unaffected price of $17.00 per share, based on
               prices prevailing in February - March 1994.

<PAGE>   26
PROJECT ACTIVE
Acquisition Multiple Matrix
($MM)

<TABLE>
<CAPTION>

                                                                                              PRICE TO EARNINGS RATIO
                                                                             -------------------------------------------------------
                              PRICE                            PREMIUM TO                   1995E(3)(4)           1996E(3)(4)
                               PER        EQUITY       AGG.    UNAFFECTED    ACTUAL      ------------------   ----------------------
                              SHARE      VALUE(1)    VALUE(2)  SHARE PRICE    LTM        I/B/E/S    MGMNT       I/B/E/S     MGMNT
                            ---------   ----------  ---------  -----------   ------      -------   --------   ----------   ---------

                            --------------------------------------------------------------------------------------------------------
                                                                 $40.00       $1.07       $1.30      $1.35       $1.40       $1.50  
                            --------------------------------------------------------------------------------------------------------
<S>                           <C>         <C>         <C>         <C>         <C>         <C>        <C>         <C>         <C>
                              $45.00      $5,373      $4,826      12.5%       42.1 x      34.6 x     33.3 x      32.1 x      30.0 x
                               47.50       5,707       5,160      18.8%       44.4        36.5       35.2        33.9        31.7   
-----------------------------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)        48.63       5,858       5,310      21.6%       45.4        37.4       36.0        34.7        32.4   
------------------------------------------------------------------------------------------------------------------------------------
                               50.00       6,042       5,494      25.0%       46.7        38.5       37.0        35.7        33.3
                            ========================================================================================================
                               52.00       6,309       5,762      30.0%       48.6        40.0       38.5        37.1        34.7
                                                                 ========
                               52.50       6,376       5,829      31.3%       49.1        40.4       38.9        37.5        35.0
                               55.00       6,710       6,163      37.5%       51.4        42.3       40.7        39.3        36.7
                               57.50       7,044       6,497      43.8%       53.7        44.2       42.6        41.1        38.3
                               60.00       7,379       6,831      50.0%       56.1        46.2       44.4        42.9        40.0
                               62.50       7,713       7,166      56.3%       58.4        48.1       46.3        44.6        41.7
                                                                 ========
                               64.00       7,913       7,366      60.0%       59.8        49.2       47.4        45.7        42.7
                            ========================================================================================================
                               65.00       8,047       7,500      62.5%       60.7        50.0       48.1        46.4        43.3
                               67.50       8,381       7,834      68.8%       63.1        51.9       50.0        48.2        45.0
                               70.00       8,716       8,168      75.0%       65.4        53.8       51.9        50.0        46.7
                               72.50       9,050       8,503      81.3%       67.8        55.8       53.7        51.8        48.3
                               75.00       9,384       8,837      87.5%       70.1        57.7       55.6        53.6        50.0
                               77.50       9,718       9,171      93.8%       72.4        59.6       57.4        55.4        51.7
                               80.00      10,053       9,505     100.0%       74.8        61.5       59.3        57.1        53.3
                               82.50      10,387       9,840     106.3%       77.1        63.5       61.1        58.9        55.0
                               85.00      10,721      10,174     112.5%       79.4        65.4       63.0        60.7        56.7
                               87.50      11,055      10,508     118.8%       81.8        67.3       64.8        62.5        58.3
                               90.00      11,390      10,842     125.0%       84.1        69.2       66.7        64.3        60.0
</TABLE>

<TABLE>
<CAPTION>
                                         PRICE TO EARNINGS RATIO                       AGGREGATE VALUE/
                                    ----------------------------------           -----------------------------
                                               1997E(3)(4)                                  REVENUE
                                    ----------------------------------           -----------------------------
                                    I/B/E/S                   MGMNT                 LTM             1995E(4)
                                    --------                ----------           ----------        -----------
<S>                                   <C>                     <C>                  <C>               <C>
                                      $1.75                   $1.64                $835              $932     
           
                                       25.7 x                  27.4 x               5.8 x             5.2 x
                                       27.1                    29.0                 6.2               5.5
Current Price (6/30/95)                27.8                    29.6                 6.4               5.7
                                       28.6                    30.5                 6.6               5.9
                                    =========================================================================
                                       29.7                    31.7                 6.9               6.2
                                       30.0                    32.0                 7.0               6.3
                                       31.4                    33.5                 7.4               6.6
                                       32.9                    35.1                 7.8               7.0
                                       34.3                    36.6                 8.2               7.3
                                       35.7                    38.1                 8.6               7.7
                                       36.6                    39.0                 8.8               7.9
                                    =========================================================================
                                       37.1                    39.6                 9.0               8.0
                                       38.6                    41.2                 9.4               8.4
                                       40.0                    42.7                 9.8               8.8
                                       41.4                    44.2                10.2               9.1
                                       42.9                    45.7                10.6               9.5
                                       44.3                    47.3                11.0               9.8
                                       45.7                    48.8                11.4              10.2
                                       47.1                    50.3                11.8              10.6
                                       48.6                    51.8                12.2              10.9
                                       50.0                    53.4                12.6              11.3
                                       51.4                    54.9                13.0              11.6
</TABLE>


    NOTES:
        (1)  Uses the Treasury Stock method.  Assumes 117.6 million shares 
             outstanding as of March 31, 1995 and 16.1 million options and
             warrants at an average exercise price of $39.92.

        (2)  Aggregate Value is equal to Equity Value plus Net Debt of -$547.2
             million as per the 10-Q dated March 31, 1995.

        (3)  Based on June 24, 1995 I/B/E/S estimates for EPS of $1.30, $1.40, 
             and $1.75 for 1995, 1996, and 1997, respectively.

        (4)  Management estimates are projections by Active Company Management.


<PAGE>   27
PROJECT ACTIVE
Discounted Cash Flow Analysis

<TABLE>
<CAPTION>

                                                           DISCOUNTED CASH FLOW VALUE
                          -------------------------------------------------------------------------------------------------
                                                           LTM P/E TERMINAL MULTIPLE
                          -------------------------------------------------------------------------------------------------
                               18.0        20.0         22.5          25.0         27.5           28.0            30.0
                               ----        ----         ----          ----         ----           ----            ----
<S>               <C>         <C>         <C>          <C>           <C>          <C>            <C>             <C>
                  15.0%       $44.20      $47.46       $51.52        $55.59       $59.66         $60.47          $63.73

DISCOUNT RATE     17.0%        41.30       44.26        47.96         51.66        55.36          56.10           59.06
                                                        -----

                  19.0%        38.53       41.39        44.76         48.13        51.50          52.18           54.88
                                           --------------------------------

                  21.0%        35.87       38.66        41.89         44.97        48.04          48.66           51.12

                  23.0%        33.47       36.03        39.22         42.12        44.93          45.49           47.74
</TABLE>


<TABLE>
<CAPTION>

                                    CHANGE IN DISCOUNTED CASH FLOW VALUE FROM 22.5x LTM P/E @ 17% DISCOUNT RATE
                          -------------------------------------------------------------------------------------------------
                                                       % IMPROVEMENT IN ANNUAL REVENUE (1997-2000)
                          -------------------------------------------------------------------------------------------------
                                -15%        -10%         -5%           -0%          5%             10%             15%
                                ----        ----         ---           ---          --             ---             ---
<S>               <C>         <C>         <C>          <C>           <C>          <C>            <C>              <C>
                  -6.0%       ($12.53)    ($10.25)     ($7.98)       ($5.97)      ($3.96)        ($1.95)          $0.05 

                  -4.0%        (10.61)      (8.22)      (6.09)        (3.98)       (1.87)          0.24            2.34
   EBIT
  MARGIN          -2.0%         (8.69)      (6.40)      (4.20)        (1.99)        0.22           2.42            4.63
IMPROVEMENT
(1997-2000)        0.0%         (6.92)      (4.61)      (2.31)         0.00         2.31           4.61            6.92

                   2.0%         (5.23)      (2.82)      (0.42)         1.99         4.40           6.80            9.21

                   4.0%         (3.54)      (1.03)       1.47          3.98         6.48           8.99           11.49

                   6.0%         (1.85)       0.76        3.36          5.97         8.57          11.18           13.78
</TABLE>

<PAGE>   28
PROJECT ACTIVE
Historical Trading Performance Since 1990
09/10/90-06/30/95


<TABLE>
<CAPTION>
                 ACTUAL
   DATES       SHARE PRICE              VOLUME          CALL PRICE
------------------------------------------------------------------
<S>               <C>                  <C>                 <C>
10-Sep-90         $23.88               507,500             $38.00
-----------------------------------------------------------------
01-Oct-90          24.75               158,600              38.00
-----------------------------------------------------------------
01-Jan-91          22.50                75,500              39.00
-----------------------------------------------------------------
01-Apr-91          25.50               111,400              40.00
-----------------------------------------------------------------
01-Jul-91          27.38               168,000              41.25
-----------------------------------------------------------------
01-Oct-91          28.50                64,800              42.50
-----------------------------------------------------------------
01-Jan-92          32.25               149,000              43.75
-----------------------------------------------------------------
01-Apr-92          28.00               149,800              45.00
-----------------------------------------------------------------
01-Jul-92          32.13               121,900              46.25
-----------------------------------------------------------------
01-Oct-92          34.88                64,900              47.50
-----------------------------------------------------------------
01-Jan-93          37.38               147,600              48.75
-----------------------------------------------------------------
01-Apr-93          35.88                60,700              50.00
-----------------------------------------------------------------
01-Jul-93          44.00               127,000              51.25
-----------------------------------------------------------------
01-Oct-93          43.13                68,900              52.50
-----------------------------------------------------------------
01-Jan-94          49.63               201,500              53.75
-----------------------------------------------------------------
01-Apr-94          44.00               541,800              55.00
-----------------------------------------------------------------
01-Jul-94          48.38               140,400              56.25
-----------------------------------------------------------------
01-Oct-94          51.75                55,100              57.50
-----------------------------------------------------------------
01-Jan-95          45.63                90,900              58.75
-----------------------------------------------------------------
01-Apr-95          49.50               750,100              60.00
-----------------------------------------------------------------
30-Jun-95          48.63                66,700              60.00
-----------------------------------------------------------------
</TABLE>
<PAGE>   29
PROJECT ACTIVE
Indexed Price Graph         
01/01/90 -- 06/30/95                          

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------
                                               BIOTECH INDEX --                                                         
 DATE                ACTIVE COMPANY              TIER 1(1)           PHARMA INDEX(2)              S & P 400           
---------------------------------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>                     <C>
 01-Jan-90               N.A.                     100.00                   100.00                  100.00
---------------------------------------------------------------------------------------------------------------------
 02-Apr-90               N.A.                     108.21                    96.66                   97.36
---------------------------------------------------------------------------------------------------------------------
 02-Jul-90               N.A.                     145.03                   114.00                  104.71
---------------------------------------------------------------------------------------------------------------------
 01-Oct-90               103.66                   141.76                   106.01                   91.83
---------------------------------------------------------------------------------------------------------------------
 01-Jan-91                94.24                   179.84                   113.41                   96.02
---------------------------------------------------------------------------------------------------------------------
 01-Apr-91               106.81                   260.88                   129.80                  108.96
---------------------------------------------------------------------------------------------------------------------
 01-Jul-91               114.66                   228.65                   131.12                  111.62
---------------------------------------------------------------------------------------------------------------------
 01-Oct-91               119.37                   324.40                   140.34                  113.97
---------------------------------------------------------------------------------------------------------------------
 01-Jan-92               135.08                   370.26                   161.73                  122.11
---------------------------------------------------------------------------------------------------------------------
 01-Apr-92               117.28                   241.71                   141.07                  119.28
---------------------------------------------------------------------------------------------------------------------
 01-Jul-92               134.55                   241.19                   133.84                  120.45
---------------------------------------------------------------------------------------------------------------------
 01-Oct-92               146.07                   222.54                   126.71                  120.94
---------------------------------------------------------------------------------------------------------------------
 01-Jan-93               156.54                   277.59                   131.00                  125.77
---------------------------------------------------------------------------------------------------------------------
 01-Apr-93               150.26                   187.43                   116.77                  127.76
---------------------------------------------------------------------------------------------------------------------
 01-Jul-93               184.29                   211.84                   117.51                  126.81
---------------------------------------------------------------------------------------------------------------------
 01-Oct-93               180.63                   227.83                   114.81                  128.77
---------------------------------------------------------------------------------------------------------------------
 03-Jan-94               207.85                   245.71                   120.19                  133.85
---------------------------------------------------------------------------------------------------------------------
 01-Apr-94               184.29                   206.96                   105.07                  129.16
---------------------------------------------------------------------------------------------------------------------
 01-Jul-94               202.62                   193.52                   111.90                  128.54
---------------------------------------------------------------------------------------------------------------------
 03-Oct-94               216.75                   251.70                   127.10                  135.76
---------------------------------------------------------------------------------------------------------------------
 02-Jan-95               191.10                   248.48                   129.92                  135.69
---------------------------------------------------------------------------------------------------------------------
 03-Apr-95               207.33                   236.88                   143.78                  148.21
---------------------------------------------------------------------------------------------------------------------
 30-Jun-95               203.66                   258.48                   155.47                  161.01
---------------------------------------------------------------------------------------------------------------------
</TABLE>

Notes: (1) Biotech Index -- Tier 1 is market capitalization weighted and
           includes Amgen, Biogen, Centocor, Chiron, Genetics Institute, 
           Genzyme and Immunex.

       (2) Pharma Index is market capitalization weighted and includes Abbott
           Laboratories, American Home Products, Bristol-Myers Squibb, Eli
           Lilly, Johnson & Johnson, Merck, Pfizer, Rhone-Poulenc Rorer,
           Schering Plough, Upjohn and Warner Lambert.

<PAGE>   30
PROJECT ACTIVE
Historical Discounts of Actual Share
Prices to Near Term Call Price

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------
                                                                    % DISCOUNT OF ACTUAL
                                                                       SHARE PRICE TO
 DATE               ACTUAL SHARE PRICE          CALL PRICE             NEAR TERM CALL
-------------------------------------------------------------------------------------------
 <S>                      <C>                      <C>                      <C>
 01/Jan/91                22.50                    39.00                    42.3%
-------------------------------------------------------------------------------------------
 31/Mar/91                25.50                    39.00                    34.6
-------------------------------------------------------------------------------------------
 30/Jun/91                27.50                    40.00                    31.3
-------------------------------------------------------------------------------------------
 30/Sep/91                28.38                    41.25                    31.2
-------------------------------------------------------------------------------------------
 31/Dec/91                32.25                    42.50                    24.1
-------------------------------------------------------------------------------------------
 31/Mar/92                27.38                    43.75                    37.4
-------------------------------------------------------------------------------------------
 30/Jun/92                31.75                    45.00                    29.4
-------------------------------------------------------------------------------------------
 30/Sep/92                34.00                    46.25                    26.5
-------------------------------------------------------------------------------------------
 31/Dec/92                37.38                    47.50                    21.8
-------------------------------------------------------------------------------------------
 31/Mar/93                36.13                    48.75                    25.9
-------------------------------------------------------------------------------------------
 30/Jun/93                44.00                    50.00                    12.0
-------------------------------------------------------------------------------------------
 30/Sep/93                42.88                    51.25                    16.3
-------------------------------------------------------------------------------------------
 31/Dec/93                50.50                    52.50                     3.8
-------------------------------------------------------------------------------------------
 31/Mar/94                44.00                    53.75                    18.1
-------------------------------------------------------------------------------------------
 30/Jun/94                49.25                    55.00                    10.5
-------------------------------------------------------------------------------------------
 30/Sep/94                52.50                    56.25                     6.7
-------------------------------------------------------------------------------------------
 31/Dec/94                45.63                    57.50                    20.7
-------------------------------------------------------------------------------------------
 31/Mar/95                46.88                    58.75                    20.2
-------------------------------------------------------------------------------------------
 30/Jun/95                48.63                    60.00                    18.5
-------------------------------------------------------------------------------------------
 Mean                                                                       22.7
-------------------------------------------------------------------------------------------
 Median                                                                     21.8
-------------------------------------------------------------------------------------------
</TABLE>
<PAGE>   31
PROJECT ACTIVE
Implied Future Share Prices 
Methodology: Historical Discount to Near Term Call Price

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------
                                                                                                   HISTORICAL       
                                                                       IMPLIED FUTURE           DISCOUNT AS A %     
 DATE                CALL PRICE             PV OF PUT PRICE(1)           SHARE PRICE              OF CALL PRICE       
---------------------------------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>                      <C>
 07/01/95                $61.25                   $46.97                   $42.11                   31.3%
---------------------------------------------------------------------------------------------------------------------
 09/30/95                 61.25                    47.70                    42.13                   31.2
---------------------------------------------------------------------------------------------------------------------
 12/31/95                 62.50                    48.43                    47.43                   24.1 
---------------------------------------------------------------------------------------------------------------------
 03/31/96                 63.75                    49.18                    39.89                   37.4 
---------------------------------------------------------------------------------------------------------------------
 06/30/96                 65.00                    49.94                    45.86                   29.4  
---------------------------------------------------------------------------------------------------------------------
 09/30/96                 66.25                    50.71                    48.70                   26.5  
---------------------------------------------------------------------------------------------------------------------
 12/31/96                 67.50                    51.49                    52.76                   21.8
---------------------------------------------------------------------------------------------------------------------
 03/31/97                 68.75                    52.28                    50.95                   25.9 
---------------------------------------------------------------------------------------------------------------------
 06/30/97                 70.00                    53.09                    61.60                   12.0  
---------------------------------------------------------------------------------------------------------------------
 09/30/97                 71.50                    53.91                    59.82                   16.3  
---------------------------------------------------------------------------------------------------------------------
 12/31/97                 73.00                    54.74                    70.22                    3.8   
---------------------------------------------------------------------------------------------------------------------
 03/31/98                 74.50                    55.58                    60.99                   18.1 
---------------------------------------------------------------------------------------------------------------------
 06/30/98                 76.00                    56.44                    68.05                   10.5 
---------------------------------------------------------------------------------------------------------------------
 09/30/98                 77.50                    57.31                    72.33                    6.7 
---------------------------------------------------------------------------------------------------------------------
 12/31/98                 79.00                    58.19                    62.68                   20.7 
---------------------------------------------------------------------------------------------------------------------
 03/31/99                 80.50                    59.09                    64.23                   20.2 
---------------------------------------------------------------------------------------------------------------------
 06/30/99                 82.00                    60.00                    66.80                   18.5 
---------------------------------------------------------------------------------------------------------------------
 Mean                                                                                               20.9  
---------------------------------------------------------------------------------------------------------------------
 Median                                                                                             20.7 
---------------------------------------------------------------------------------------------------------------------
</TABLE>

Note: (1) Based on a four year AA bond rate of 6.31% on 06/30/95.

<PAGE>   32
PROJECT ACTIVE
Historical IRR of Actual Share Prices to 06/30/95 Call Price

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------
 DATE               ACTUAL SHARE PRICE          CALL PRICE        % IRR TO END CALL PRICE
-------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>
 01/01/91                $22.50                   $39.00                   $24.4%
-------------------------------------------------------------------------------------------
 03/31/91                 25.50                    39.00                    22.3
-------------------------------------------------------------------------------------------
 06/30/91                 27.50                    40.00                    21.5
-------------------------------------------------------------------------------------------
 09/30/91                 28.38                    41.25                    22.1
-------------------------------------------------------------------------------------------
 12/31/91                 32.25                    42.50                    19.4
-------------------------------------------------------------------------------------------
 03/31/92                 27.38                    43.75                    27.3
-------------------------------------------------------------------------------------------
 06/30/92                 31.75                    45.00                    23.6
-------------------------------------------------------------------------------------------
 09/30/92                 34.00                    46.25                    22.9
-------------------------------------------------------------------------------------------
 12/31/92                 37.13                    47.50                    21.2
-------------------------------------------------------------------------------------------
 03/31/93                 36.13                    48.75                    25.3
-------------------------------------------------------------------------------------------
 06/30/93                 44.00                    50.00                    16.8 
-------------------------------------------------------------------------------------------
 09/30/93                 42.88                    51.25                    21.2
-------------------------------------------------------------------------------------------
 12/31/93                 50.50                    52.50                    12.2
-------------------------------------------------------------------------------------------
 03/31/94                 44.00                    53.75                    28.2
-------------------------------------------------------------------------------------------
 06/30/94                 49.25                    55.00                    21.8
-------------------------------------------------------------------------------------------
 09/30/94                 52.50                    56.25                    19.5
-------------------------------------------------------------------------------------------
 12/31/94                 45.63                    57.50                    72.9
-------------------------------------------------------------------------------------------
 03/31/95                 46.88                    58.75                   168.4
-------------------------------------------------------------------------------------------
 06/30/95                 48.63                    60.00                    N.M.
-------------------------------------------------------------------------------------------
 Mean(1)                                                                    21.9
-------------------------------------------------------------------------------------------
 Median                                                                     22.0
-------------------------------------------------------------------------------------------
</TABLE>

End Call Price 6/30/95  $60

Note: (1) Mean IRR to End Call Price calculated from 01/01/91 to 09/30/94.

<PAGE>   33
PROJECT ACTIVE
Implied Future Share Prices 
Methodology: Historical IRR to End Call Price

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------------
                                                                     IMPLIED FUTURE        IMPLIED FUTURE SHARE PRICE
                         CALL                                       SHARE PRICE BASED      BASED ON AVERAGE OF 21.6%
 DATE                    PRICE              PV OF PUT PRICE(1)      ON HISTORICAL IRR      HISTORICAL IRR TO END CALL(2)
------------------------------------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>                     <C>
 07/01/95                $61.25                   $46.97                   $37.58                  $37.45
------------------------------------------------------------------------------------------------------------------------
 09/30/95                 61.25                    47.70                    38.78                   39.33
------------------------------------------------------------------------------------------------------------------------
 12/31/95                 62.50                    48.43                    44.08                   41.31
------------------------------------------------------------------------------------------------------------------------
 03/31/96                 63.75                    49.18                    37.41                   43.38
------------------------------------------------------------------------------------------------------------------------
 06/30/96                 65.00                    49.94                    43.39                   45.56
------------------------------------------------------------------------------------------------------------------------
 09/30/96                 66.25                    50.71                    46.47                   47.84
------------------------------------------------------------------------------------------------------------------------
 12/31/96                 67.50                    51.49                    50.74                   50.25
------------------------------------------------------------------------------------------------------------------------
 03/31/97                 68.75                    52.28                    49.37                   52.77
------------------------------------------------------------------------------------------------------------------------
 06/30/97                 70.00                    53.09                    60.13                   55.42
------------------------------------------------------------------------------------------------------------------------
 09/30/97                 71.50                    53.91                    58.60                   58.20
------------------------------------------------------------------------------------------------------------------------
 12/31/97                 73.00                    54.74                    69.02                   61.12
------------------------------------------------------------------------------------------------------------------------
 03/31/98                 74.50                    55.58                    60.13                   64.19
------------------------------------------------------------------------------------------------------------------------
 06/30/98                 76.00                    56.44                    67.31                   67.41
------------------------------------------------------------------------------------------------------------------------
 09/30/98                 77.50                    57.31                    71.75                   70.79
------------------------------------------------------------------------------------------------------------------------
 12/31/98                 79.00                    58.19                    62.35                   74.35
------------------------------------------------------------------------------------------------------------------------
 03/31/99                 80.50                    59.09                    64.06                   78.08
------------------------------------------------------------------------------------------------------------------------
 06/30/99                 82.00                    60.00                    N.M.                    82.00
------------------------------------------------------------------------------------------------------------------------
</TABLE>

Notes: (1) Based on a four year AA bond rate of 6.31% on 06/30/95.

       (2) Mean IRR to End Call Price calculated from 07/01/95 to 09/30/98.

<PAGE>   34
PROJECT ACTIVE
Comparison of Historical Share Prices to Implied P/E Multiples


<TABLE>
<CAPTION>
                                06/30/91           06/30/92           06/30/93           06/30/94           06/30/95

<S>                         <C>                <C>                <C>                <C>                <C>
Actual Share Price(1)       $25.50 - $30.50    $26.13 - $35.38    $31.50 - $44.50    $44.00 - $52.50    $45.88 - $51.88(2)

Active Forward                    $.70              $0.20              $0.64              $1.25              $1.40
Calendar Year EPS(3)

Implied Forward P/E          36.4x - 43.6x     130.6x - 176.9x     49.2x - 69.5x      35.2x - 42.0x      33.5x - 37.1x
Multiple

Comparable Average                33.4x             45.8x              27.5x              28.9x              31.7x
Forward P/E(4)
</TABLE>

Notes:    (1)  Trading Value closing prices for the period from 03/31 to 09/30
               in the corresponding year.

          (2)  Trading Value closing prices for the period from 03/31 to 06/30
               in the corresponding year.

          (3)  Median I/B/E/S forward estimate as of June 30 of the
               corresponding year.

          (4)  Average 1-year forward P/E multiples for comparables (AMGN, BGEN,
               CPIR, GENZ).
<PAGE>   35
PROJECT ACTIVE
Implied Unaffected Future Share Prices 
Methodology: Forward P/E Multiple
Standalone(1)

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------
                                                                                  IMPLIED FUTURE                       
 DATES                 CALL PRICE                PUT PRICE(2)                     SHARE PRICE RANGE                        
---------------------------------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>                     <C>
 07/01/95                $61.25                   $46.97                   $39.00                  $42.00
---------------------------------------------------------------------------------------------------------------------
 09/30/95                 61.25                    47.70                    39.00                   42.00
---------------------------------------------------------------------------------------------------------------------
 12/31/95                 62.50                    48.43                    39.00                   42.00
---------------------------------------------------------------------------------------------------------------------
 03/31/96                 63.75                    49.18                    39.36                   42.64
---------------------------------------------------------------------------------------------------------------------
 06/30/96                 65.00                    49.94                    39.36                   42.64
---------------------------------------------------------------------------------------------------------------------
 09/30/96                 66.25                    50.71                    39.36                   42.64
---------------------------------------------------------------------------------------------------------------------
 12/31/96                 67.50                    51.49                    39.36                   42.64
---------------------------------------------------------------------------------------------------------------------
 03/31/97                 68.75                    52.28                    44.00                   48.00
---------------------------------------------------------------------------------------------------------------------
 06/30/97                 70.00                    53.09                    44.00                   48.00
---------------------------------------------------------------------------------------------------------------------
 09/30/97                 71.50                    53.91                    44.00                   48.00
---------------------------------------------------------------------------------------------------------------------
 12/31/97                 73.00                    54.74                    44.00                   48.00
---------------------------------------------------------------------------------------------------------------------
 03/31/98                 74.50                    55.58                    49.60                   54.56
---------------------------------------------------------------------------------------------------------------------
 06/30/98                 76.00                    56.44                    49.60                   54.56
---------------------------------------------------------------------------------------------------------------------
 09/30/98                 77.50                    57.31                    49.60                   54.56
---------------------------------------------------------------------------------------------------------------------
 12/31/98                 79.00                    58.19                    49.60                   54.56
---------------------------------------------------------------------------------------------------------------------
 03/31/99                 80.50                    59.09                    63.90                   71.00
---------------------------------------------------------------------------------------------------------------------
 06/30/99                 82.00                    60.00                    63.90                   71.00
---------------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
                         07/01/95  09/30/95   12/31/95   03/31/96   06/30/96   09/30/96   12/31/96   03/31/97   06/30/97   09/30/97

<S>                      <C>         <C>         <C>       <C>        <C>        <C>        <C>        <C>        <C>        <C>

Forward EPS Estimate        $1.50     $1.50      $1.50      $1.64      $1.64      $1.64      $1.64      $2.00      $2.00      $2.00
                                                                                                                                   
Unaffected        18        27.00     27.00      27.00      29.52      29.52      29.52      29.52      36.00      36.00      36.00
  P/E Multiple                                                                                                                     
                  20        30.00     30.00      30.00      32.80      32.80      32.80      32.80      40.00      40.00      40.00
                                                                                                        --------------------------- 
                  22        33.00     33.00      33.00      36.08      36.08      36.08      36.08      44.00      44.00      44.00
                                                            --------------------------------------                                  
                  24        36.00     36.00      36.00      39.36      39.36      39.36      39.36      48.00      48.00      48.00
                            --------------------------                                                  ---------------------------
                  26        39.00     39.00      39.00      42.64      42.64      42.64      42.64      52.00      52.00      52.00
                                                            --------------------------------------                                 
                  28        42.00     42.00      42.00      45.92      45.92      45.92      45.92      56.00      56.00      56.00
                            --------------------------                                                                             
                  30        45.00     45.00      45.00      49.20      49.20      49.20      49.20      60.00      60.00      60.00
                                                                                                                   
<CAPTION>
                         12/31/97  03/31/98   06/30/98   09/30/98   12/31/98   03/31/99   06/30/99  
                                                                                                    
<S>                      <C>         <C>         <C>       <C>        <C>        <C>        <C>        
                                                                                                    
Forward EPS Estimate        $2.00     $2.48      $2.48      $2.48      $2.48      $3.55      $3.55 
                                                                                  ----------------
Unaffected        18        36.00     44.64      44.64      44.64      44.64      63.90      63.90 
  P/E Multiple                        --------------------------------------                        
                  20        40.00     49.60      49.60      49.60      49.60      71.00      71.00 
                            -----                                                 ----------------
                  22        44.00     54.56      54.56      54.56      54.56      78.10      78.10 
                                      --------------------------------------                        
                  24        48.00     59.52      59.52      59.52      59.52      85.20      85.20 
                            -----                                                                       
                  26        52.00     64.48      64.48      64.48      64.48      92.30      92.30 
                                                                                                   
                  28        56.00     69.44      69.44      69.44      69.44      99.40      99.40 
                                                                                                   
                  30        60.00     74.40      74.40      74.40      74.40     106.50     106.50 
</TABLE>


Notes: (1) Management numbers with no collaboration.

       (2) Based on a four year AA bond rate of 6.31% on 06/30/95.

<PAGE>   36
PROJECT ACTIVE
Implied Unaffected Future Share Prices 
Methodology: Forward P/E Multiple
With Collaboration(1)

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------------
                                                                                  IMPLIED FUTURE                       
 DATE                  CALL PRICE                PUT PRICE(2)                     SHARE PRICE RANGE                        
---------------------------------------------------------------------------------------------------------------------
 <S>                     <C>                      <C>                      <C>                     <C>
 07/01/95                $61.25                   $46.97                   $54.60                  $58.80
---------------------------------------------------------------------------------------------------------------------
 09/30/95                 61.25                    47.70                    54.60                   58.80
---------------------------------------------------------------------------------------------------------------------
 12/31/95                 62.50                    48.43                    54.60                   58.80
---------------------------------------------------------------------------------------------------------------------
 03/31/96                 63.75                    49.18                    52.56                   56.94
---------------------------------------------------------------------------------------------------------------------
 06/30/96                 65.00                    49.94                    52.56                   56.94
---------------------------------------------------------------------------------------------------------------------
 09/30/96                 66.25                    50.71                    52.56                   56.94
---------------------------------------------------------------------------------------------------------------------
 12/31/96                 67.50                    51.49                    52.56                   56.94
---------------------------------------------------------------------------------------------------------------------
 03/31/97                 68.75                    52.28                    51.26                   55.92
---------------------------------------------------------------------------------------------------------------------
 06/30/97                 70.00                    53.09                    51.26                   55.92
---------------------------------------------------------------------------------------------------------------------
 09/30/97                 71.50                    53.91                    51.26                   55.92
---------------------------------------------------------------------------------------------------------------------
 12/31/97                 73.00                    54.74                    51.26                   55.92
---------------------------------------------------------------------------------------------------------------------
 03/31/98                 74.50                    55.58                    51.40                   56.54
---------------------------------------------------------------------------------------------------------------------
 06/30/98                 76.00                    56.44                    51.40                   56.54
---------------------------------------------------------------------------------------------------------------------
 09/30/98                 77.50                    57.31                    51.40                   56.54
---------------------------------------------------------------------------------------------------------------------
 12/31/98                 79.00                    58.19                    51.40                   56.54
---------------------------------------------------------------------------------------------------------------------
 03/31/99                 80.50                    59.09                    60.84                   67.60
---------------------------------------------------------------------------------------------------------------------
 06/30/99                 82.00                    60.00                    60.84                   67.60
---------------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
                         07/01/95  09/30/95   12/31/95   03/31/96   06/30/96   09/30/96   12/31/96   03/31/97   06/30/97   09/30/97

<S>                      <C>         <C>         <C>       <C>        <C>        <C>        <C>        <C>        <C>        <C>

Forward EPS Estimate        $2.10     $2.10      $2.10      $2.19      $2.19      $2.19      $2.19      $2.33      $2.33      $2.33
                                                                                                                                   
Unaffected
P/E Multiple      18        37.80     37.80      37.80      39.42      39.42      39.42      39.42      41.94      41.94      41.94
                                                                                                                 
                  20        42.00     42.00      42.00      43.80      43.80      43.80      43.80      46.60      46.60      46.60
                                                                                                        --------------------------- 
                  22        46.20     46.20      46.20      48.18      48.18      48.18      48.18      51.26      51.26      51.26
                                                            --------------------------------------                                  
                  24        50.40     50.40      50.40      52.56      52.56      52.56      52.56      55.92      55.92      55.92
                            --------------------------                                                  ---------------------------
                  26        54.60     54.60      54.60      56.94      56.94      56.94      56.94      60.58      60.58      60.58
                                                            --------------------------------------                                 
                  28        58.80     58.80      58.80      61.32      61.32      61.32      61.32      65.24      65.24      65.24
                            --------------------------                                                                             
                  30        63.00     63.00      63.00      65.70      65.70      65.70      65.70      69.90      69.90      69.90
                                                                                                                   
<CAPTION>
                         12/31/97  03/31/98   06/30/98   09/30/98   12/31/98   03/31/99   06/30/99  
                                                                                                    
<S>                      <C>         <C>         <C>       <C>        <C>        <C>        <C>        
                                                                                                    
Forward EPS Estimate        $2.33     $2.57      $2.57      $2.57      $2.57      $3.38      $3.38 
                                                                                  ----------------
Unaffected
P/E Multiple      18        41.94     46.26      46.26      46.26      46.26      60.84      60.84 
                                      --------------------------------------                        
                  20        46.60     51.40      51.40      51.40      51.40      67.60      67.60 
                            -----                                                 ----------------
                  22        51.26     56.54      56.54      56.54      56.54      74.36      74.36 
                                      --------------------------------------                        
                  24        55.92     61.68      61.68      61.68      61.68      81.12      81.12 
                            -----                                                                       
                  26        60.58     66.82      66.82      66.82      66.82      87.88      87.88 
                                                                                                   
                  28        65.24     71.96      71.96      71.96      71.96      94.64      94.64 
                                                                                                   
                  30        69.90     77.10      77.10      77.10      77.10     101.40     101.40 
</TABLE>


Notes: (1) Management numbers with Collaboration.

       (2) Based on a four year AA bond rate of 6.31% on 06/30/95.

<PAGE>   37
PROJECT ACTIVE
Summary Implied Future Share Prices


<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------------------------
                                                                           HISTORICAL
                                                      HISTORICAL IRR      AVERAGE IRR           HISTORICAL
                  CALL                PV OF PUT         TO END CALL       TO END CALL        DISCOUNT TO NEAR        UNAFFECTED
   DATE           PRICE                PRICE(1)            PRICE             PRICE              TERM CALL           STANDALONE(2)
-------------------------------------------------------------------------------------------------------------------------------
<S>               <C>                   <C>                <C>                 <C>                 <C>                  <C>
07/01/95          $61.25                $46.97             $37.58              $37.45              $42.11               $40.50
-------------------------------------------------------------------------------------------------------------------------------
09/30/95           61.25                 47.70              38.78               39.33               42.13                40.50
-------------------------------------------------------------------------------------------------------------------------------
12/31/95           62.50                 48.43              44.08               41.31               47.43                40.50
-------------------------------------------------------------------------------------------------------------------------------
03/31/96           63.75                 49.18              37.41               43.38               39.89                41.00
-------------------------------------------------------------------------------------------------------------------------------
06/30/96           65.00                 49.94              43.39               45.56               45.86                41.00
-------------------------------------------------------------------------------------------------------------------------------
09/30/96           66.25                 50.71              46.47               47.84               48.70                41.00
-------------------------------------------------------------------------------------------------------------------------------
12/31/96           67.50                 51.49              50.74               50.25               52.76                41.00
-------------------------------------------------------------------------------------------------------------------------------
03/31/97           68.75                 52.28              49.37               52.77               50.95                46.00
-------------------------------------------------------------------------------------------------------------------------------
06/30/97           70.00                 53.09              60.13               55.42               61.60                46.00
-------------------------------------------------------------------------------------------------------------------------------
09/30/97           71.50                 53.91              58.60               58.20               59.82                46.00
-------------------------------------------------------------------------------------------------------------------------------
12/31/97           73.00                 54.74              69.02               61.12               70.22                46.00
-------------------------------------------------------------------------------------------------------------------------------
03/31/98           74.50                 55.58              60.13               64.19               60.99                52.08
-------------------------------------------------------------------------------------------------------------------------------
06/30/98           76.00                 56.44              67.31               67.41               68.05                52.08
-------------------------------------------------------------------------------------------------------------------------------
09/30/98           77.50                 57.31              71.75               70.79               72.33                52.08
-------------------------------------------------------------------------------------------------------------------------------
12/31/98           79.00                 58.19              62.35               74.35               62.68                52.08
-------------------------------------------------------------------------------------------------------------------------------
03/31/99           80.50                 59.09              64.06               78.08               64.23                67.45
-------------------------------------------------------------------------------------------------------------------------------
06/30/99           82.00                 60.00               N.M.               82.00               66.80                67.45
-------------------------------------------------------------------------------------------------------------------------------
</TABLE>

Notes:    (1)  Based on a four year AA bond rate of 6.31% on 06/30/95.

          (2)  Based on unaffected P/E multiples ranging from 28x in 1995 to
               18x in 1999.
<PAGE>   38

PROJECT ACTIVE
Internal Rate of Return Analysis of Put and Final Call



<TABLE>
<CAPTION>
                                           IMPLIED INTERNAL RATE OF RETURN AT 6/30/95
                                           ------------------------------------------
                                               7/01/99                     6/30/99
                                               $60.00                      $82.00
                                              PUT PRICE                  CALL PRICE
                                           ---------------             --------------
<S>                               <C>           <C>                        <C>      <C>
                                  $30.00        18.9%                      28.6%
                                   32.50        16.6%                      26.0%
                                   35.00        14.4%                      23.7%
          ILLUSTRATIVE             37.50        12.5%                      21.6%
          SHARE PRICES             40.00        10.7%                      19.7%
                                   42.50         9.0%                      17.9%
                                   --------------------------------------------------------------------------------------------
                                   43.76         8.2%                      17.0%    PV OF 6/30/99 CALL AT ACTIVE COST OF EQUITY
                                   --------------------------------------------------------------------------------------------
                                   45.00         7.5%                      16.2%
--------------------------------------------------------------------------------
PV OF PUT AT 4 YR. AA BOND RATE    46.97         6.3%                      14.9%
--------------------------------------------------------------------------------
                                   47.50         6.0%                      14.6%
--------------------------------------------------------------------------------
         CURRENT 6/30/95           48.63         5.4%                      14.0%
--------------------------------------------------------------------------------
                                   50.00         4.7%                      13.2%
</TABLE>


<TABLE>
<CAPTION>
                                              ILLUSTRATIVE SHARE PRICE AT 6/30/95
                                           ------------------------------------------
                                               7/01/99                     6/30/99
                                               $60.00                      $82.00
                                              PUT PRICE                  CALL PRICE
                                           ---------------             --------------
<S>                                <C>         <C>                        <C>      <C>
                                    4.0%       $51.29                     $70.09
                                    5.0%        49.36                      67.46
                                    6.0%        47.53                      64.95
--------------------------------------------------------------------------------
       4 YR. AA BOND RATE           6.3%        46.97                      64.20
--------------------------------------------------------------------------------
                                    7.0%        45.77                      62.56
                                    8.0%        44.10                      60.27 
                                    9.0%        42.51                      58.09
                                   10.0%        40.98                      56.01
                                   11.0%        39.52                      54.02
      ILLUSTRATIVE RANGE OF        12.0%        38.13                      52.11
        REQUIRED RETURNS           13.0%        36.80                      50.29
                                   -----------------------------------------------------------------------
                                   14.0%        35.68                      48.63       CURRENT 6/30/95
                                   -----------------------------------------------------------------------
                                   15.0%        34.31                      46.88
                                   16.0%        33.14                      45.29
                                   -----------------------------------------------------------------------
                                   17.0%        32.02                      43.76     ACTIVE COST OF EQUITY
                                   -----------------------------------------------------------------------
                                   18.0%        30.95                      42.29
                                   19.0%        29.92                      40.89
                                   20.0%        28.94                      39.54
</TABLE>




<PAGE>   39
PROJECT ACTIVE
Internal Rate of Return Analysis of Future Call Schedule




<TABLE>
<CAPTION>
                                                           Special Common Stock Redemption Dates
                       ------------------------------------------------------------------------------------------------------------
                       
                       07/01/95   09/30/95   12/31/95   03/31/96    06/30/96    09/30/96  12/31/96   03/31/97   06/30/97   09/30/97
                       --------   --------   --------   --------    --------    --------  --------   --------   --------   --------
<S>                    <C>        <C>        <C>        <C>         <C>         <C>       <C>        <C>        <C>        <C>
Call Price             $61.25     $61.25     $62.50     $63.75      $65.00      $66.25    $67.50     $68.75     $70.00     $71.50
                       
<CAPTION>              
                                           Special Common Stock Redemption Dates
                       ---------------------------------------------------------------------------              
                       
                       12/31/97   03/31/98    06/30/98    09/30/98  12/31/98   03/31/99   06/30/99
                       --------   --------    --------    --------  --------   --------   --------
<S>                    <C>        <C>         <C>         <C>       <C>        <C>        <C>            
Call Price             $73.00     $74.50      $76.00      $77.50    $79.00     $80.50     $82.00           
</TABLE>                


<TABLE>
<CAPTION>                                          
                                                              IMPLIED INTERNAL RATE OF RETURN OF SHARE PRICES 
                                                                      TO INTERIM CALL PRICES
                                              ===========================================================================
                           SHARE PRICES       12/31/95    03/31/96   06/30/96    09/30/96  12/31/96   03/31/97   06/30/97
                         ===============      --------    --------   --------    --------  --------   --------   --------
<S>                          <C>                 <C>        <C>        <C>         <C>        <C>       <C>        <C>
                             $30.00                 NM          NM         NM       88.5%     71.7%      60.6%      52.8%
                              32.50                 NM          NM         NM       76.8%     62.8%      53.4%      46.8%
                              35.00                 NM          NM      85.7%       66.6%     54.9%      47.1%      41.4%
                              37.50                 NM          NM      73.3%       57.7%     48.0%      41.4%      36.6%
                              40.00                 NM       86.2%      62.5%       49.7%     41.7%      36.3%      32.3%
                              42.50                 NM       71.7%      52.9%       42.6%     36.1%      31.6%      28.3%
-------------------------------------------------------------------------------------------------------------------------
PV of 6/30/99 Call @ 17.0%    43.76                 NM       65.2%      48.5%       39.3%     33.5%      29.5%      26.5%
-------------------------------------------------------------------------------------------------------------------------
                              45.00              92.9%       59.1%      44.4%       36.3%     31.0%      27.4%      24.7%
-------------------------------------------------------------------------------------------------------------------------
PV of 7/99 Put @ 6.3%         46.97              77.0%       50.3%      38.4%       31.7%     27.3%      24.3%      22.1%
-------------------------------------------------------------------------------------------------------------------------
                              47.50              73.1%       48.0%      36.8%       30.5%     26.4%      23.5%      21.4%
-------------------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)       48.63              65.2%       43.5%      33.7%       28.1%     24.4%      21.9%      20.0%
-------------------------------------------------------------------------------------------------------------------------
                              50.00              56.3%       38.3%      30.0%       25.2%     22.1%      20.0%      18.3%
                                                                     ========                                    ========
                                          
<CAPTION>                                          
                                                                  IMPLIED INTERNAL RATE OF RETURN OF SHARE PRICES 
                                                                           TO INTERIM CALL PRICES
                                            ======================================================================================
                           SHARE PRICES     09/30/97    12/31/97   03/31/98    06/30/98  09/30/98   12/31/98   03/31/99   06/30/99
                         ===============    --------    --------   --------    --------  --------   --------   --------   --------
<S>                          <C>               <C>        <C>        <C>         <C>        <C>       <C>        <C>         <C>
                             $30.00            47.1%       42.7%      39.2%       36.3%     33.9%      31.9%      30.1%      28.6%
                              32.50            42.0%       38.2%      35.2%       32.7%     30.7%      28.9%      27.4%      26.0%
                              35.00            37.4%       34.2%      31.6%       29.5%     27.7%      26.2%      24.9%      23.7%
                              37.50            33.2%       30.5%      28.4%       26.5%     25.0%      23.7%      22.6%      21.6%
                              40.00            29.5%       27.2%      25.4%       23.9%     22.6%      21.5%      20.5%      19.7%
                              42.50            26.0%       24.2%      22.6%       21.4%     20.3%      19.4%      18.6%      17.9%
----------------------------------------------------------------------------------------------------------------------------------
PV of 6/30/99 Call @ 17.0%    43.76            24.4%       22.7%      21.3%       20.2%     19.2%      18.4%      17.7%      17.0%
----------------------------------------------------------------------------------------------------------------------------------
                              45.00            22.8%       21.4%      20.1%       19.1%     18.2%      17.4%      16.8%      16.2%
----------------------------------------------------------------------------------------------------------------------------------
PV of 7/99 Put @ 6.3%         46.97            20.5%       19.3%      18.3%       17.4%     16.7%      16.0%      15.4%      14.9%
----------------------------------------------------------------------------------------------------------------------------------
                              47.50            19.9%       18.8%      17.8%       17.0%     16.3%      15.6%      15.1%      14.6%
----------------------------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)       48.63            18.7%       17.6%      16.8%       16.1%     15.4%      14.9%      14.4%      14.0%
----------------------------------------------------------------------------------------------------------------------------------
                              50.00            17.2%       16.3%      15.6%       15.0%     14.4%      14.0%      13.5%      13.2%
                                                                               ========                                   ========
</TABLE>

<PAGE>   40
PROJECT ACTIVE
Premium of Present Value of Put and Final Call to 06/30/95 Share Price


            7/01/99
            =======
Put Price:  $60.00


<TABLE>
<CAPTION>

                                                       PREMIUM/(DISCOUNT) OF 7/01/99 $60 PUT (PV AT 6/30/95)  
                                                ================================================================
                                                                      RANGE OF DISCOUNT RATES                     
                                                ================================================================
<S>                                               <C>               <C>               <C>                <C>    
                         Discount Rates:             6.3%             13.0%             15.0%              17.0%
                                                =========         =========         =========          =========
                         PV of Put Price:          $46.97            $36.80            $34.31             $32.02
                                                =========         =========         =========          =========
                                   $30.00           56.6%             22.7%             14.4%               6.7%
                                                                                                       =========
                                    32.50           44.5%             13.2%              5.6%              -1.5%
                             -------------------------------------------------------=========-------------------
                                    35.00           34.2%              5.1%             -2.0%              -8.5%
                                                                  ========= 
 Illustrative                       37.50           25.3%             -1.9%             -8.5%             -14.6%
 Share Prices                       40.00           17.4%             -8.0%            -14.2%             -20.0%
  (6/30/99)                         42.50           10.5%            -13.4%            -19.3%             -24.7%
                                    45.00            4.4%            -18.2%            -23.8%             -28.8%
                             -------------------=========-------------------------------------------------------
                                    47.50           -1.1%            -22.5%            -27.8%             -32.6%
----------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)             48.63           -3.4%            -24.3%            -29.4%             -34.2%
----------------------------------------------------------------------------------------------------------------
                                    50.00           -6.1%            -26.4%            -31.4%             -36.0%

</TABLE>


            6/30/99
            =======
Put Price:  $82.00


<TABLE>
<CAPTION>

                                                      PREMIUM/(DISCOUNT) OF 6/30/99 $82 CALL (PV AT 6/30/95)  
                                                ================================================================
                                                                      RANGE OF DISCOUNT RATES                     
                                                ================================================================
<S>                                               <C>               <C>               <C>                <C>    
                         Discount Rates:             6.3%             13.0%             15.0%              17.0%
                                                =========         =========         =========          =========
                         PV of Call Price:         $64.20            $50.29            $46.88             $43.76
                                                =========         =========         =========          =========
                                   $30.00          114.0%             67.6%             56.3%              45.9%
                                    32.50           97.5%             54.7%             44.3%              34.6%
                             -----------------------------------------------------------------------------------
                                    35.00           83.4%             43.7%             34.0%              25.0%
 Illustrative                       37.50           71.2%             34.1%             25.0%              16.7%
 Share Prices                       40.00           60.5%             25.7%             17.2%               9.4%
                                                                                                       =========
  (6/30/99)                         42.50           51.1%             18.3%             10.3%               3.0%
                                    45.00           42.7%             11.8%              4.2%              -2.8%
                             -------------------------------------------------------=========-------------------
                                    47.50           35.2%              5.9%             -1.3%              -7.9%
----------------------------------------------------------------------------------------------------------------
Current Price (6/30/95)             48.63           32.0%              3.4%             -3.6%             -10.0%
----------------------------------------------------------------------------------------------------------------
                                    50.00           28.4%              0.6%             -6.2%             -12.5%
                                                                  =========-------------------------------------
</TABLE>
         


<PAGE>   41
PROJECT ACTIVE
Illustrative Premium Analysis
Management Projected EPS
Standalone

<TABLE>
<CAPTION>

                                                                        -----------
FORWARD P/E MULTIPLES APPLIED TO 2000 EPS OF:                              $3.55
                                                                        -----------

                                                                 IMPLIED 6/30/99 SHARE VALUE
                                           FINAL CALL PRICE AS A PREMIUM/(DISCOUNT) TO UNAFFECTED SHARE PRICE
                                                             ILLUSTRATIVE INCREASE/DECREASE IN EPS
                              ---------------------------------------------------------------------------------------------------
                                     -20%               -10%                 0%                  10%                   20%
                                    ------              -----               ---                 -----                 -----
                                    $2.84               $3.20              $3.55                $3.91                 $4.26
                              ---------------------------------------------------------------------------------------------------
<S>                  <C>             <C>                  <C>               <C>                   <C>                   <C>
                     15.0x           $42.60               $47.93            $53.25                $58.58                $63.90
                                        92%                  71%               54%                   40%                   28%

Illustrative         17.5             49.70                55.91             62.13                 68.34                 74.55
                                        65%                  47%               32%                   20%                   10%
                                                                                                                   =============

Forward P/E          20.0             56.80                63.90             71.00                 78.10                 85.20
                                        44%                  28%               15%                    5%                   -4%
                                                                                             =============

Multiples            22.5             63.90                71.89             79.88                 87.86                 95.85
                                        28%                  14%                3%                   -7%                  -14%
                                                                       =============

                     25.0             71.00                79.88             88.75                 97.63                106.50
                                        15%                   3%               -8%                  -16%                  -23%
                                                     =============

                     27.5             78.10                87.86             97.63                107.39                117.15
                                         5%                  -7%              -16%                  -24%                  -30%
                                =============

                     30.0             85.20                95.85            106.50                117.15                127.80
                                        -4%                 -14%              -23%                  -30%                  -36%

</TABLE>

<TABLE>
<CAPTION>

                                                                       -----------
6/30/99 CALL PRICE:                                                       $82.00
                                                                       -----------

                                             REQUIRED EPS IN 2000 TO ACHIEVE ACQUISITION VALUE EQUAL TO CALL PRICE
                                                          PICKUP/(DILUTION) TO MANAGEMENT ESTIMATE EPS
                                                         ILLUSTRATIVE PREMIUMS TO UNAFFECTED SHARE PRICE
                          ---------------------------------------------------------------------------------------------------------
                              0%       10%           20%          30%          40%       50%        60%        70%          80%
                              --       ---           ---          ---          ---       ---        ---        ---          ---
                          ---------------------------------------------------------------------------------------------------------
<S>               <C>       <C>        <C>         <C>           <C>           <C>        <C>        <C>        <C>          <C>
                  15.0x     $5.47      $4.97        $4.56         $4.21         3.90      3.64       $3.42      $3.22        $3.04
                              54%        40%          28%           18%          10%        3%         -4%        -9%         -14%
                                                                            ===================

Illustrative      17.5       4.69       4.26         3.90          3.60         3.35      3.12        2.93       2.76         2.60
                              32%        20%          10%            2%          -6%      -12%        -18%       -22%         -27%
                                                 ========================
     
                                                                              
Forward P/E       20.0       4.10       3.73         3.42          3.15         2.93      2.73        2.56       2.41         2.28
                              15%         5%          -4%          -11%         -18%      -23%        -28%       -32%         -36%
                                     =========
                               
                                                                              
Multiples         22.5       3.64       3.31         3.04          2.80         2.60      2.43        2.28       2.14         2.02
                               3%        -7%         -14%          -21%         -27%      -32%        -36%       -40%         -43%
                        ===========                                          
                                                                              
                  25.0       3.28       2.98         2.73          2.52         2.34      2.19        2.05       1.93         1.82
                              -8%       -16%         -23%          -29%         -34%      -38%        -42%       -46%         -49%
                                                                              
                  27.5       2.98       2.71         2.48          2.29         2.13      1.99        1.86       1.75         1.66
                             -16%       -24%         -30%          -35%         -40%      -44%        -48%       -51%         -53%
                                                                              
                  30.0       2.73       2.48         2.28          2.10         1.95      1.82        1.71       1.61         1.52
                             -23%       -30%         -36%          -41%         -45%      -49%        -52%       -55%         -57%
                                                                              
</TABLE>                                                                      

<PAGE>   42
PROJECT ACTIVE
Illustrative Premium Analysis
Management Projected EPS
With Collaboration


<TABLE>
<CAPTION>
                                                                         ---------
FORWARD P/E MULTIPLES APPLIED TO 2000 EPS OF:                              $3.38
                                                                         ---------

                                                                 IMPLIED 6/30/99 SHARE VALUE
                                           FINAL CALL PRICE AS A PREMIUM/(DISCOUNT) TO UNAFFECTED SHARE PRICE
                                                             ILLUSTRATIVE INCREASE/DECREASE IN EPS
                              ---------------------------------------------------------------------------------------------------
                                     -20%               -10%                 0%                  10%                   20%
                                    ------              -----               ---                 -----                 -----
                                    $2.70               $3.04              $3.38                $3.72                 $4.06
                              ---------------------------------------------------------------------------------------------------
<S>                  <C>             <C>                  <C>               <C>                   <C>                   <C>
                     15.0x           $40.56               $45.63            $50.70                $55.77                $60.84
                                       102%                  80%               62%                   47%                   35%

Illustrative         17.5             47.32                53.24             59.15                 65.07                 70.98
                                        73%                  54%               39%                   26%                   16%

Forward P/E          20.0             54.08                60.84             67.00                 74.36                 81.12
                                        52%                  35%               21%                   10%                    1%
                                                                                             ===================================

Multiples            22.5             60.84                68.45             76.05                 83.66                 91.26
                                        35%                  20%                8%                   -2%                  -10%
                                                                       =============

                     25.0             67.60                76.05             84.50                 92.95                101.40
                                        21%                   8%               -3%                  -12%                  -19%
                                                     =============

                     27.5             74.36                83.66             92.95                102.25                111.54
                                        10%                  -2%              -12%                  -20%                  -26%

                     30.0             81.12                91.26            101.40                111.54                121.68
                                         1%                 -10%              -19%                  -26%                  -33%
                                                                       -------------
</TABLE>

<TABLE>
<CAPTION>
                                                                         ---------
6/30/99 CALL PRICE:                                                        $82.00
                                                                         ---------

                                             REQUIRED EPS IN 2000 TO ACHIEVE ACQUISITION VALUE EQUAL TO CALL PRICE
                                                          PICKUP/(DILUTION) TO MANAGEMENT ESTIMATE EPS
                                                         ILLUSTRATIVE PREMIUMS TO UNAFFECTED SHARE PRICE
                          ---------------------------------------------------------------------------------------------------------
                              0%        10%          20%           30%          40%      50%        60%         70%         80%
                              ---       ----         ----          ----         ----     ----       ----        ----        ----
                          ---------------------------------------------------------------------------------------------------------
<S>               <C>       <C>        <C>         <C>           <C>          <C>        <C>        <C>        <C>          <C>
                  15.0x     $5.47      $4.97        $4.56         $4.21       $3.90     $3.64       $3.42      $3.22        $3.04
                              62%        47%          35%           24%         16%        8%          1%        -5%         -10%
                                                                            ===============================

Illustrative      17.5      $4.69      $4.26        $3.90         $3.60        $3.35    $3.12       $2.93      $2.76        $2.60
                              39%        26%          16%            7%          -1%      -8%        -13%       -18%         -23%
                                                              ===========
     
                                                                              
Forward P/E       20.0       $4.10      $3.73       $3.42         $3.15        $2.93    $2.73       $2.56      $2.41        $2.28
                               21%        10%          1%           -7%         -13%     -19%        -24%       -29%         -33%
                                      =====================
                               
                                                                              
Multiples         22.5       $3.64      $3.31       $3.04         $2.80        $2.60    $2.43       $2.28      $2.14        $2.02
                                8%        -2%        -10%          -17%         -23%     -28%        -33%       -37%         -40%
                         ===========                                          
                                                                              
                  25.0       $3.28      $2.98       $2.73         $2.52        $2.34    $2.19        $2.05     $1.93        $1.82
                               -3%       -12%        -19%          -25%         -31%     -35%         -39%      -43%         -46%
                                                                              
                  27.5       $2.98      $2.71       $2.48         $2.29        $2.13    $1.99        $1.86     $1.75        $1.66
                              -12%       -20%        -26%          -32%         -37%     -41%         -45%      -48%         -51%
                                                                              
                  30.0       $2.73      $2.48       $2.28         $2.10        $1.95    $1.82        $1.71     $1.61        $1.52
                              -19%       -26%        -33%          -38%         -42%     -46%         -49%      -52%         -55%
                                                                              
</TABLE>                                                                      

<PAGE>   43

PROJECT ACTIVE
Call Price Premium to Unaffected Share Prices
Standalone(1)

<TABLE>
<CAPTION>
---------------------------------------------------------------------------
                   Call Price as Premium/          Call Price as Premium/
  Date           (Discount) to Lower Price       (Discount) to Higher Price
---------------------------------------------------------------------------
<S>              <C>                             <C>
07/01/95                   57.1%                           45.8%
---------------------------------------------------------------------------
09/30/95                   57.1                            45.8
---------------------------------------------------------------------------
12/31/95                   60.3                            48.8
---------------------------------------------------------------------------
03/31/96                   62.0                            49.5
---------------------------------------------------------------------------
06/30/96                   65.1                            52.4
---------------------------------------------------------------------------
09/30/96                   68.3                            55.4
---------------------------------------------------------------------------
12/31/96                   71.5                            58.3
---------------------------------------------------------------------------
03/31/97                   56.3                            43.2
---------------------------------------------------------------------------
06/30/97                   59.1                            45.8
---------------------------------------------------------------------------
09/30/97                   62.5                            49.0
---------------------------------------------------------------------------
12/31/97                   65.9                            52.1
---------------------------------------------------------------------------
03/31/98                   50.2                            36.5
---------------------------------------------------------------------------
06/30/98                   53.2                            39.3
---------------------------------------------------------------------------
09/30/98                   56.3                            42.0
---------------------------------------------------------------------------
12/31/98                   59.3                            44.8
---------------------------------------------------------------------------
03/31/99                   26.0                            13.4
---------------------------------------------------------------------------
06/30/99                   28.3                            15.5
---------------------------------------------------------------------------
  Mean                     56.4                            43.4
---------------------------------------------------------------------------
 Median                    59.1                            45.8
---------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
                            07/01/95  09/30/95  12/31/95  03/31/96  06/30/96  09/30/96  12/31/96  03/31/97  06/30/97  09/30/97
                            --------  --------  --------  --------  --------  --------  --------  --------  --------  --------
<S>                         <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>
Lower Price                  $39.00    $39.00    $39.00    $39.36    $39.36    $39.36    $39.36    $44.00    $44.00    $44.00

Higher Price                 $42.00    $42.00    $42.00    $42.64    $42.64    $42.64    $42.64    $48.00    $48.00    $48.00

Call Price as Premium/
(Discount) to Lower Price     57.1%     57.1%     60.3%     62.0%     65.1%     68.3%     71.5%     56.3%     59.1%     62.5%

Call Price as Premium/
(Discount) to Higher Price    45.8%     45.8%     48.8%     49.5%     52.4%     55.4%     58.3%     43.2%     45.8%     49.0%
</TABLE>


<TABLE>
<CAPTION>
                            12/31/97  03/31/98  06/30/98  09/30/98  12/31/98  03/31/99  06/30/99    
                            --------  --------  --------  --------  --------  --------  --------    
<S>                         <C>       <C>       <C>       <C>       <C>       <C>       <C>         
Lower Price                  $44.00    $49.60    $49.60    $49.60    $49.60    $63.90    $63.90

Higher Price                 $48.00    $54.56    $54.56    $54.56    $54.56    $71.00    $71.00

                                                                                                    Mean      Median
                                                                                                    ----      ------
                                                                                                    <C>       <C>
Call Price as Premium/                                                                              
(Discount) to Lower Price     65.9%     50.2%     53.2%     56.3%     59.3%     26.0%     28.3%     56.4%     59.1%

Call Price as Premium/
(Discount) to Higher Price    52.1%     36.5%     39.3%     42.0%     44.8%     13.4%     15.5%     43.4%     45.8%
</TABLE>

Note: (1) Management numbers with no collaboration.

<PAGE>   44
PROJECT ACTIVE
Put Price Implied Multiple and Breakeven Analysis
Standalone

<TABLE>
<CAPTION>
                                               07/01/95      06/30/96      06/30/97      06/30/98      06/30/99
                                               --------      --------      --------      --------      --------
<S>                                             <C>           <C>           <C>           <C>           <C>
Present Value of Put                            $46.97        $49.94        $53.09        $56.44        $60.00

<CAPTION>
Management Projection                           1996           1997          1998          1999          2000
                                                ----           ----          ----          ----          ----
<S>                                             <C>            <C>           <C>           <C>           <C>
  Forward EPS-Standalone                        $1.50          $1.64         $2.00         $2.48         $3.55
    % growth                                    11.1%           9.3%         22.0%         24.0%         43.1%

Required Forward P/E Multiple for Breakeven      31.3 x         30.4 x        26.5 x        22.8 x        16.9 x
Required Current Year Revenues
  Multiple for Breakeven(1)                       5.3 x          5.2 x         4.8 x         4.4 x         4.1 x

</TABLE>
<TABLE>
<CAPTION>
                                                                    REQUIRED EPS FOR BREAKEVEN
                                               -------------------------------------------------------------------
                                                         Pickup/(Dilution) versus Management Estimates
                                               -------------------------------------------------------------------
                                                1996           1997          1998          1999          2000
                                                ----           ----          ----          ----          -----
<S>                        <C>                 <C>            <C>            <C>           <C>           <C>
                           15.0 x               $3.13         $3.33          $3.54         $3.76         $4.00
                                                 109%          103%            77%           52%           13%

                           17.5 x                2.68          2.85           3.03          3.23           3.43
                                                  79%           74%            52%           30%            -3%

 Illustrative              20.0 x                2.35          2.50           2.65          2.82           3.00
Forward P/E                                       57%           52%            33%           14%           -15%
 Multiples
                           22.5 x                2.09          2.22           2.36           2.51           2.67
                                                  39%           35%            18%             1%           -25%

                           25.0 x                1.88          2.00           2.12           2.26           2.40
                                                  25%           22%             6%            -9%           -32%

                           27.5 x                1.71          1.82           1.93           2.05           2.18
                                                  14%           11%            -3%           -17%           -39%

                           30.0 x                1.57          1.66           1.77           1.88           2.00
                                                   4%            1%           -12%           -24%           -44%
</TABLE>

Note: (1) Current Year Revenues Multiple assumes Aggregate Value based on 117.6
          million shares as of March 31, 1995 and Net Debt of -$547.2 million. 
          Revenue are Management Estimates.

<PAGE>   45
PROJECT ACTIVE
Call Price Implied Multiple and Breakeven Analysis
Standalone


<TABLE>
<CAPTION>
                                                                       Special Common Stock Redemption Dates
                                                ----------------------------------------------------------------------------------
                                                  07/01/95          06/30/96          06/30/97          06/30/98          06/30/99
                                                  --------          --------          --------          --------          --------
<S>                                              <C>                <C>               <C>               <C>               <C>
Near Term Call Price                              $61.25             $65.00            $70.00            $76.00            $82.00

<CAPTION>
                                                   1996               1997              1998              1999              2000
                                                   ----               ----              ----              ----              ---- 
<S>                                               <C>                <C>               <C>               <C>                <C>
Management Projection
  Forward EPS - Standalone                        $1.50               $1.64             $2.00            $2.48              $3.55
    % growth                                      11.1%                9.3%             22.0%            24.0%              43.1%

Required Forward P/E Multiple for Breakeven        40.8 x              39.6 x            35.0 x           30.6 x             23.1
Required Current Year Revenues
  Multiple for Breakeven(1)                         7.1 x               6.9 x             6.5 x            6.1 x              6.7

<CAPTION>
                                                                             REQUIRED EPS FOR BREAKEVEN
                                                ----------------------------------------------------------------------------------
                                                                    Pickup/(Dilution) versus Management Estimates
                                                ----------------------------------------------------------------------------------
                                                   1996               1997              1998              1999              2000
                                                   ----               ----              ----              ----              ----
<S>                                                <C>                <C>               <C>               <C>               <C>
                          15.0 x                   $4.08              $4.33             $4.67             $5.07             $5.47
                                                    172%               164%              133%              104%               54%

                          17.5 x                    3.50               3.71              4.00              4.34              4.69
                                                    133%               126%              100%               75%               32%

  Illustrative            20.0 x                    3.06               3.25              3.50              3.80              4.10
Forward P/E                                         104%                98%               75%               53%               15%
  Multiples
                          22.5 x                    2.72               2.89              3.11              3.38              3.64
                                                     81%                76%               56%               36%                3%

                          25.0 x                    2.45               2.60              2.80              3.04              3.28
                                                     63%                59%               40%               23%               -8%

                          27.5 x                    2.23               2.36              2.55              2.76              2.98
                                                     48%                44%               27%               11%              -16%

                          30.0 x                    2.04               2.17              2.33              2.53              2.73
                                                     36%                32%               17%                2%              -23%

Note: (1) Current Year Revenues assumes Aggregate Value based on 117.6 million
          shares as of March 31, 1995 and Net Debt of -$547.2 million. Revenues 
          are Management Estimates.

</TABLE>

<PAGE>   46
PROJECT ACTIVE
Analysis of Option Components

<TABLE>
<CAPTION>
                                    X Axis                   Y Axis
                                    ------                   ------
                                Share Price at
                                   Maturity             Value at Maturity
                                --------------          -----------------
                                   <S>                          <C>
                                   Below 60                     60
                                      60                        60
                                      65                        65
                                      70                        70
                                      75                        75
                                      80                        80
                                      82                        82
                                   Above 82                     82
</TABLE>

Active Shareholders' effective position:
  Own a Roche Bond Face Value of $60
  Own a Call at $60
  Sold a Call at $82

Value in Excess of Bond was represented by the area bound by Value at Maturity
above $60 in the area between Share Price at Maturity of $60 and $82.


<PAGE>   47
PROJECT ACTIVE
Analysis of Option Components
(Continued)

                         ------------------------------
                         / Value of Bond(1):   $46.97 /
                         ------------------------------

<TABLE>
<CAPTION>
                                                                         PREMIUM TO
                            VALUE IN EXCESS           VALUE OF           UNAFFECTED
                               OF BOND(2)             PACKAGE            SHARE PRICE
                            ---------------      -----------------     ---------------
                             LOW       HIGH       LOW        HIGH       LOW      HIGH
                            -----     -----      -----      ------     -----     -----
<S>              <C>       <C>        <C>        <C>        <C>        <C>       <C>
Unaffected       $35.00     $0.00  -  $3.00      $46.97  -  $49.97     34.2%  -  42.8%  
Share Prices      40.00      0.00  -   3.50       46.97  -   50.47     17.4%  -  26.2%
                  45.00      0.00  -   4.50       46.97  -   51.47      4.4%  -  14.4%
</TABLE>

        NOTES:
                (1) Value of Bond equals the present value of $60 based on a 
                    four year AA bond rate of 6.31% on 6/30/95.
                (2) Value in Excess of Bond equals the value of a call struck 
                    at $60 minus the value of a call struck at $82 based on a
                    Black-Scholes option calculation.

<PAGE>   48
PROJECT ACTIVE
Analysis of Standstill Agreement

<TABLE>
<CAPTION>

          
                                                                 DISCOUNT TO          
          OPEN                 BLENDED COST (1)                 $82 CALL PRICE        
         MARKET        --------------------------------        ----------------         DIFFERENCE AS % 
          PRICE         75.0%     79.9%     Difference          75.0%     79.9%        OF $82 CALL PRICE
        --------       -------   -------   ------------        -------   -------      -------------------
         <S>           <C>       <C>          <C>              <C>       <C>                 <C>           
        
         $48.63        $68.17    $64.34       $3.83            -16.9%    -21.5%              4.7% 
          50.00         68.74     65.07        3.67            -16.2%    -20.7%              4.5% 
          52.00         69.57     66.12        3.44            -15.2%    -19.4%              4.2% 
          54.00         70.40     67.18        3.21            -14.2%    -18.1%              3.9%
          56.00         71.23     68.24        2.98            -13.1%    -16.8%              3.6%
          58.00         72.05     69.30        2.75            -12.1%    -15.5%              3.4%
          60.00         72.88     70.36        2.53            -11.1%    -14.2%              3.1%
          62.00         73.71     71.42        2.30            -10.1%    -12.9%              2.8%
          64.00         74.54     72.47        2.07             -9.1%    -11.6%              2.5%
          66.00         75.37     73.53        1.84             -8.1%    -10.3%              2.2%
          68.00         76.20     74.59        1.61             -7.1%     -9.0%              2.0%
          70.00         77.03     75.65        1.38             -6.1%     -7.7%              1.7%
          72.00         77.86     76.71        1.15             -5.1%     -6.5%              1.4%
          74.00         78.68     77.77        0.92             -4.0%     -5.2%              1.1%
          76.00         79.51     78.82        0.69             -3.0%     -3.9%              0.8%
          78.00         80.34     79.88        0.46             -2.0%     -2.6%              0.6%
          80.00         81.17     80.94        0.23             -1.0%     -1.3%              0.3%
          82.00         82.00     82.00        0.00             -0.0%     -0.0%              0.0%

</TABLE>


Note:  
       (1)  Roche currently holds 57.3% of Active equity  securities on a
            fully-diluted basis. It is assumed that shares are purchased
            on the open market up to the respective standstill levels with
            the remainder purchased pursuant to the final call price of $82.
 <PAGE>   49
PROJECT ACTIVE
Analysis of Collaboration
Incremental Discounted Cash Flow Value of Collaboration

<TABLE>
<CAPTION>


                            INCREMENTAL DCF VALUE ABOVE/(BELOW) STANDALONE DCF VALUE
                     -----------------------------------------------------------------------
                                           LTM P/E TERMINAL MULTIPLE
                     ----------------------------------------------------------------------- 
 
                        18.0        20.0        22.5        25.0        27.5        28.0
                      -------      ------      ------      ------      ------      ------
<S>                    <C>         <C>         <C>         <C>         <C>         <C>

             15.0%     ($0.96)     ($1.12)     ($1.31)     ($1.50)     ($1.70)     ($1.74) 

             17.0%      (0.81)      (0.95)      (1.13)      (1.31)      (1.48)      (1.52) 
DISCOUNT  
  RATE       19.0%      (0.77)      (0.81)      (0.97)      (1.13)      (1.29)      (1.32)

             21.0%      (0.64)      (0.77)      (0.82)      (0.97)      (1.11)      (1.14)
 
             23.0%      (0.51)      (0.64)      (0.79)      (0.83)      (0.96)      (0.99) 


<CAPTION>

                            INCREMENTAL DCF VALUE ABOVE/(BELOW) COLLABORATION DCF VALUE
                     -----------------------------------------------------------------------
                             % IMPROVEMENT IN ANNUAL INTERNATIONAL REVENUES (1997-2000)                   
                     ----------------------------------------------------------------------- 

                                10%                    15%                      20%  
                              ------                 ------                   ------
<S>                            <C>                    <C>                     <C>
      
             15.0%             $0.30                  $0.45                   $0.60       

             17.0%              0.28                   0.43                    0.57       
DISCOUNT  
  RATE       19.0%              0.27                   0.41                    0.54            

             21.0%              0.29                   0.44                    0.59     
 
             23.0%              0.28                   0.42                    0.56     

</TABLE>


<PAGE>   50
PROJECT ACTIVE
License Agreement

-  Focused on rights to Active's international marketing and development
   activities

   -  Existing products 20% royalty for Europe and Canada, 12.5-15.0% royalty
      for international sales outside Europe and Canada; transfer price to
      include 20% manufacturing mark-up

   -  10 year option to license international rights for products under 
      development until after completion of first phase II clinical trial

      -  Roche pays 50% of all Active development costs plus 100% of 
         international development costs

      -  12.5-15% royalty on international sales

      -  20% manufacturing mark-up plus reimbursement for development of 
         manufacturing process for peptides and proteins

-  Collaborative agreements generally consist of equity investment,
   milestone payments, R&D funding and royalty payments

   -  100% development funding in return for exclusive rights (typically
      including manufacturing rights), milestone payments and royalties 
      generally ranging 6-15%

-  Roche/Active Agreement

   -  Benefits

      -  Top end of royalty rates plus 50% funding for past and future U.S. 
         development expenses

      -  Scope of R&D and marketing support significant - estimated at $500MM 
         through 2000 (mgmt projections)

      -  Manufacturing rights add another 20% plus 50% process funding

      -  Eliminates costs to develop international infrastructures (not a 
         priority through 2000)

      -  Roche has strong international infrastructure to i) accelerate product 
         development; and ii) increase sales (hence royalty) potential of
         Active products

   -  Issues

      -  Breadth eliminates potential for other partners

      -  Upside capped (impact most significant past 2000)

      -  Length; option extends 6 years beyond call period



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