ITEQ INC
S-4/A, 1997-10-03
INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFING EQUIP
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 3, 1997
    
 
   
                                                      REGISTRATION NO. 333-35891
    
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
   
                                AMENDMENT NO. 1
    
   
                                       TO
    
 
                                    FORM S-4
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
 
                                   ITEQ, INC.
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                              <C>                              <C>
            DELAWARE                           3443                          41-166701
  (State or other jurisdiction     (Primary Standard Industrial           (I.R.S. Employer
of incorporated or organization)   Classification Code Number)          Identification No.)
</TABLE>
 
                             ---------------------
 
<TABLE>
<C>                                              <C>
         2727 ALLEN PARKWAY, SUITE 760                           MARK E. JOHNSON
              HOUSTON, TEXAS 77019                     CHAIRMAN AND CHIEF EXECUTIVE OFFICER
                 (713) 285-2700                                     ITEQ, INC.
   (Address including zip code, and telephone             2727 ALLEN PARKWAY, SUITE 760
  number, including area code, of Registrant's                 HOUSTON, TEXAS 77019
          principal executive offices)                            (713) 285-2700
                                                     (Name, address, including zip code, and
                                                     telephone number, including area code of
                                                                agent for service)
</TABLE>
 
                                With copies to:
 
<TABLE>
<C>                                              <C>
                RICHARD L. WYNNE                                  JOHN S. WATSON
            PORTER & HEDGES, L.L.P.                           VINSON & ELKINS L.L.P.
           700 LOUISIANA, 35TH FLOOR                               1001 FANNIN
           HOUSTON, TEXAS 77002-2764                          2300 FIRST CITY TOWER
           TELEPHONE: (713) 226-0600                           HOUSTON, TEXAS 77002
              FAX: (713) 226-0247                           TELEPHONE: (713) 758-2222
                                                               FAX: (713) 615-5236
</TABLE>
 
                             ---------------------
 
   
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this Registration Statement becomes effective.
    
                             ---------------------
 
    If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]
 
   
    If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ]
    
 
   
    If this form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, Check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
    
                             ---------------------
 
                        CALCULATION OF REGISTRATION FEE
 
   
<TABLE>
<CAPTION>
========================================================================================================================
                                                          PROPOSED MAXIMUM           PROPOSED
      TITLE OF EACH CLASS OF            AMOUNT TO          OFFERING PRICE       MAXIMUM AGGREGATE         AMOUNT OF
   SECURITIES TO BE REGISTERED        BE REGISTERED         PER UNIT(1)           OFFERING PRICE     REGISTRATION FEE(2)
- ------------------------------------------------------------------------------------------------------------------------
<S>                                <C>                 <C>                    <C>                    <C>
Common Stock, $.001 par value per
  share...........................     10,040,049             $10.375              $104,165,509            $10,732
========================================================================================================================
</TABLE>
    
 
   
(1) Pursuant to Rule 457(f), the registration fee is calculated based on the
    average of the high and low prices for the Registrant's common stock, as
    reported by the Nasdaq National Market on July 31, 1997, or $10.375 per
    share, multiplied by 10,040,049, the maximum number of shares of common
    stock issuable upon consummation of the Merger described herein.
    
 
   
(2) Pursuant to Rule 457(b), the registration fee has been reduced by $20,834
    representing the fee paid with respect to this transaction pursuant to
    Section 14(g) of the Securities Exchange Act of 1934.
    
                             ---------------------
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
================================================================================
<PAGE>   2
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act, the Registrant has duly
caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Houston, State of Texas,
on October 3, 1997.
    
 
                                            ITEQ, INC.
 
                                            By:     /s/ MARK E. JOHNSON
                                              ----------------------------------
 
                                                       Mark E. Johnson
                                               Chairman of the Board and Chief
                                                       Executive Officer
 
                               POWER OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Mark E. Johnson and Lawrance W. McAfee, and each
of them, either of whom may act without joinder of the other, his true and
lawful attorneys-in-fact and agents, with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any or all pre-and post-effective amendments to this
Registration Statement, and to file the same, with all exhibits thereto and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto such attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, and each of them, or the
substitute or substitutes of either of them, may lawfully do or cause to be done
by virtue hereof.
 
   
     Pursuant to the requirements of the Securities Act, this Registration
Statement has been signed by the following persons in the indicated capacities
and on the 3rd day of October, 1997.
    
 
   
<TABLE>
<CAPTION>
                      SIGNATURE                                               TITLE
                      ---------                                               -----
<C>                                                        <S>
 
                 /s/ MARK E. JOHNSON                       Director, Chairman of the Board and Chief
- -----------------------------------------------------        Executive Officer (Principal Executive
                   Mark E. Johnson                           Officer)
 
               /s/ LAWRANCE W. MCAFEE                      Director, Executive Vice President, Chief
- -----------------------------------------------------        Financial Officer and Secretary (Principal
                 Lawrance W. McAfee                          Financial Officer and Principal Accounting
                                                             Officer)
 
                          *                                Director
- -----------------------------------------------------
                  Pierre S. Melcher
 
                          *                                Director
- -----------------------------------------------------
                  Thomas N. Amonett
 
                          *                                Director
- -----------------------------------------------------
                  T. William Porter
 
                          *                                Director
- -----------------------------------------------------
                   James L. Rainey
 
                          *                                Director
- -----------------------------------------------------
                    James A. Read
 
             *By: /s/ LAWRANCE W. MCAFEE
  ------------------------------------------------
                 Lawrance W. McAfee
           Executive Vice President, Chief
           Financial Officer and Secretary
                 as Attorney-in-Fact
</TABLE>
    
<PAGE>   3
 
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
   EXHIBIT NO.                            DESCRIPTION
   -----------                            -----------
<S>               <C>
       2.1        -- Plan and Agreement of Merger dated as of June 30, 1997,
                     between the Registrant and Astrotech International
                     Corporation (included as Appendix A to the Joint Proxy
                     Statement/Prospectus).
       3.1        -- Amended and Certificate of Incorporation of Registrant
                     (included as Appendix E to the Joint Proxy
                     Statement/Prospectus).
       3.2        -- Amended and Restated Bylaws of the Registrant.
       4.1        -- See Exhibits 3.1 and 3.2 for provisions of the
                     Certificate of Incorporation and Bylaws of the Registrant
                     defining the rights of holders of Common Stock.
       4.2        -- Amended and Restated Credit Agreement dated November 18,
                     1996, among the Registrant, Bank of America National
                     Trust and Savings Association, as Agent, The First
                     National Bank of Boston, as Co-Agent and certain other
                     financial institutions. (Filed as an exhibit to Form 8-K
                     dated December 5, 1996 and incorporated herein by
                     reference).
       4.3        -- Subordination Agreement among the Registrant and various
                     financial institutions (the "Senior Lenders"), including
                     Bank of America National Trust and Savings Association,
                     as Agent, and The First National Bank of Boston, as
                     Co-Agent. (Filed as an exhibit to Form 8-K dated December
                     5, 1996 and incorporated herein by reference).
       4.4        -- Subordinated Note and Purchase Agreement dated November
                     18, 1996, among the Registrant, International Mezzanine
                     Capital, B.V. ("Mezzanine") and First Commerce
                     Corporation ("First Commence"). (Filed as an exhibit to
                     Form 8-K dated December 5, 1996 and incorporated herein
                     by reference).
       4.5        -- Senior Subordinated Note due November 18, 2003, between
                     the Registrant and Mezzanine, dated November 18, 1996.
                     (Filed as an exhibit to Form 8-K dated December 5, 1996
                     and incorporated herein by reference).
       4.6        -- Senior Subordinated Note due November 18, 2003, between
                     the Registrant and First Commerce, dated November 18,
                     1996. (Filed as an exhibit to Form 8-K dated December 5,
                     1996 and incorporated herein by reference).
       4.7        -- Guaranty dated November 18, 1996, executed by the
                     Registrant in favor of Mezzanine and First Commerce.
                     (Filed as an exhibit to Form 8-K dated December 5, 1996
                     and incorporated herein by reference).
       4.8        -- Warrant Agreement, dated November 18, 1996, between the
                     Registrant and Mezzanine. (Filed as an exhibit to Form
                     8-K dated December 5, 1996 and incorporated herein by
                     reference).
       4.9        -- Warrant Agreement dated November 18, 1996, between the
                     Registrant and First Commerce. (Filed as an exhibit to
                     Form 8-K dated December 5, 1996 and incorporated herein
                     by reference).
       4.10       -- Registration Right Agreement dated November 18, 1996,
                     among the Registrant, Mezzanine, and First Commerce.
                     (Filed as an exhibit to Form 8-K dated December, 1996 and
                     incorporated herein by reference).
       4.11       -- Warrant Agreement, dated April 24, 1996, between the
                     Registrant and Sanders Morris Mundy, Inc. (Filed as an
                     exhibit to Form 10-Q for the quarter ended September 30,
                     1996 and incorporated herein by reference).
       4.12       -- Warrant Agreement, dated December 1992, between
                     Registrant and Pennsylvania Merchant Group, Ltd. (Filed
                     as an exhibit to Form 10-K for fiscal year ending March
                     31, 1993 and incorporated herein by reference).
       5.1        -- Opinion of Porter & Hedges, L.L.P. as to the legality of
                     the securities being registered.
</TABLE>
    
<PAGE>   4
   
<TABLE>
<CAPTION>
   EXHIBIT NO.                            DESCRIPTION
   -----------                            -----------
<C>               <S>
      *8.1        -- Tax Opinion of Porter & Hedges, L.L.P.
      10.1        -- Amended and Restated 1990 Stock Option Plan of the
                     Registrant (included as Appendix D to the Joint Proxy
                     Statement/Prospectus).
      10.2        -- Agreement and Plan of Merger dated September 19, 1996,
                     among the Registrant, Air-Cure Acquisition, Inc. and
                     Ohmstede, Inc. (Filed as an exhibit to Form 10-Q for the
                     quarter ended September 30, 1996 and incorporated herein
                     by reference).
      10.3        -- Agreement and Plan of Merger dated October 13, 1995,
                     among the Registrant, Air-Cure Acquisition Corporation,
                     Allied Industries, Inc., Mark E. Johnson and Pierre S.
                     Melcher. (Filed as an exhibit to Post-Effective Amendment
                     No. 1 to Form S-4 Registration Statement (No. 33-92308)
                     and incorporated herein by reference).
      10.4        -- Agreement and Plan of Merger dated April 28, 1994, among
                     the Registrant, VIC Acquisition, Corporation, VIC
                     Environmental Systems, Inc. and Ronald E. Lewis. (Filed
                     as an exhibit to Post-Effective Amendment No. 1 to Form
                     S-1 Registration Statement (No. 33-69524) and
                     incorporated herein by reference).
      10.5        -- Agreement and Plan of merger dated April 5, 1994, among
                     the Registrant, Air-Cure Acquisition Corporation, Amerex,
                     Inc., Amerex Industries, Inc. and certain other parties.
                     (Filed as an exhibit to Post-Effective Amendment No. 1 to
                     Form S-1 Registration Statement (No. 33-69524) and
                     incorporated herein by reference).
      10.6        -- Employment Agreement dated March 1, 1996, between the
                     Registrant and Lawrance W. McAfee. (Filed as an exhibit
                     to Form 10-Q for the quarter ended September 30, 1996 and
                     incorporated herein by reference).
      10.7        -- Employment Agreement dated December 29, 1995, between the
                     Registrant and Mark E. Johnson. (Filed as an exhibit to
                     Form 10-K for the year ended December 31, 1995 and
                     incorporated herein by reference).
      10.8        -- Employment Agreement dated December 29, 1995, between the
                     Registrant and Pierre S. Melcher. (Filed as an exhibit to
                     Form 10-K for the year ended December 31, 1995 and
                     incorporated herein by reference).
      10.9        -- Employment Agreement dated March 1, 1995, between the
                     Registrant and John P. Fitzpatrick. (Filed as an exhibit
                     to Form 10-K for the year ended December 31, 1994 and
                     incorporated herein by reference).
      10.10       -- Employees Stock Purchase Plan, as amended dated December
                     15, 1994. (Filed as an exhibit to Form 10-K for year
                     ended December 31, 1994 and incorporated herein by
                     reference).
      10.11       -- Director Stock Option Plan, as amended. (Plan filed as an
                     exhibit to Proxy Statement for Annual Meeting of
                     Stockholders held on June 29, 1996, and amendment filed
                     as an exhibit to Form 10-Q for the quarter ended June 30,
                     1996, both of which are incorporated herein by
                     reference).
      10.12       -- Employment Agreement dated May 15, 1997, between the
                     Registrant and John Camardella. (Filed as an exhibit to
                     Form 10-Q for the quarter ended June 30, 1997 and
                     incorporated herein by reference).
      10.13       -- Lease Agreement dated May 25, 1994, between Halligan and
                     Labbe Enterprises, L.L.C. and Amerex Industries, Inc.
                     (Filed as an exhibit to Form 10-K for the year ended
                     December 31, 1994 and incorporated herein by reference).
      10.14       -- License and Technical Assistance Agreement dated August
                     28, 1991, between Interel Environmental Technologies,
                     Inc. and Heinrich Luhr Staubtechnik GmbH & Co. (Filed as
                     an exhibit to Form S-1 (No. 33-44205) and incorporated
                     herein by reference).
</TABLE>
    
<PAGE>   5
   
<TABLE>
<CAPTION>
   EXHIBIT NO.                            DESCRIPTION
   -----------                            -----------
<C>               <S>
      10.15       -- Acquisition Agreement dated as of August 24, 1997,
                     between the Registrant and the owners of Exell. (Filed as
                     an exhibit to Form S-2 (No. 33-23245) dated May 20, 1996
                     and incorporated herein by reference).
      10.16       -- First Amendment and Second Amendment to Acquisition
                     Agreement dated as of April 24, 1997, between Registrant
                     and the owners of Exell. (Filed as an exhibit to Form
                     10-Q for the quarter ended June 30, 1997 and incorporated
                     herein by reference).
      23.1        -- Consent of Arthur Andersen LLP.
      23.2        -- Consent of Melton & Melton L.L.P.
      23.3        -- Consent of KPMG Peat Marwick LLP.
      23.4        -- Consent of Coopers & Lybrand L.L.P.
      23.5        -- Consent of Ernst & Young LLP.
      23.6        -- Consent of Porter & Hedges, L.L.P. (contained in opinion
                     filed as Exhibit 5.1).
     *23.7        -- Consent of Simmons & Company International with respect
                     to its fairness opinion.
     *23.8        -- Consent of Rauscher Pierce Refsnes, Inc. with respect to
                     its fairness opinion.
     *23.9        -- Consent of S. Kent Rockwell, a person named in the
                     Registration Statement as about to become a director who
                     has not signed the Registration Statement pursuant to
                     Rule 438.
     *23.10       -- Consent of Nathan M. Avery, a person named in the
                     Registration Statement as about to become a director who
                     has not signed the Registration Statement pursuant to
                     Rule 438.
      24.1        -- Power of Attorney (included on signature page)
      99.1        -- Form of Proxy of ITEQ, Inc. (relating to the ITEQ Meeting
                     described in the Joint Proxy Statement/Prospectus forming
                     a part of this Registration Statement).
      99.2        -- Form of Proxy of Astrotech International Corporation
                     (relating to the Astrotech Meeting described in the Joint
                     Proxy Statement/Prospectus forming a part of this
                     Registration Statement).
</TABLE>
    
 
- ---------------
 
   
* Filed herewith.
    

<PAGE>   1





                                                                     Exhibit 8.1





   
                                October 2, 1997
    


ITEQ, Inc.
2727 Allen Parkway, Suite 760
Houston, Texas  77019


Ladies and Gentlemen:

         We have acted as counsel to ITEQ, Inc., a Delaware corporation
("ITEQ"), in connection with the transactions contemplated by the Plan and
Agreement of Merger dated effective June 30, 1997 (the "Merger Agreement"), by
and among ITEQ and Astrotech International Corporation, a Delaware corporation
("Astrotech").  We have been requested by ITEQ to render our opinion with
respect to the material federal income tax consequences of the proposed merger
(the "Merger") of Astrotech with and into ITEQ in accordance with the Merger
Agreement, with ITEQ to be the surviving corporation. As a result of the
Merger, all of the outstanding shares of  Astrotech Common Stock will be
converted into shares of ITEQ Common Stock, except for cash paid to Astrotech
stockholders in lieu of receipt of fractional shares of ITEQ Common Stock.  All
capitalized terms used herein and not otherwise defined shall have the meaning
set forth in the Merger Agreement.

         We have examined (i) executed copies of the Merger Agreement, (ii) the
Registration Statement on Form S-4 filed by ITEQ (Registration No. 333-35891)
which contains the Joint Proxy Statement (the "Joint Proxy
Statement/Prospectus"), and (iii) have examined or relied upon originals or
copies, certified or otherwise identified to our satisfaction, of such
corporate records, documents, certificates and other instruments, as we have
deemed necessary or appropriate for the purpose of rendering the opinions
expressed below.  As to certain questions of fact material to the opinions
rendered herein, we have relied upon certificates, warranties and covenants
made to us by the management of ITEQ and Astrotech, as well as certificates of
continuity of interest from certain stockholders of Astrotech (each of which we
have relied upon as true in this opinion without our having performed any
independent verification as to their accuracy).  We have assumed that the
Merger qualifies as a statutory merger under applicable state law.  We have
further assumed that all signatures on all documents we have examined are
genuine, that all documents submitted to us as originals are authentic and that
all copies of documents submitted to us are complete and conform to the
originals thereof.
<PAGE>   2
ITEQ, Inc.
   
October 2, 1997
    
Page 2

         Based on the foregoing, and assuming further that the Merger is
carried out in the manner set forth in the Merger Agreement and the
Registration Statement, we are of the opinion that the material federal income
tax consequences resulting from the consummation of the Merger are as described
in the discussion titled "Certain Federal Income Tax Consequences" as set forth
in the Joint Proxy Statement/Prospectus.

         Our opinion has been requested by ITEQ on behalf of (i) itself, (ii)
Astrotech, (iii) the Astrotech stockholders receiving ITEQ Common Stock in
exchange for Astrotech Common Stock pursuant to the Merger, and (iv) the
holders of options to purchase Astrotech Common Stock that are receiving
options to purchase ITEQ Common Stock pursuant to the Merger.  No other
individual or entity, whether or not a party to the Merger Agreement, may rely
upon this opinion without the express, prior written consent of both ITEQ and
the undersigned.

         Our opinion is limited to the matters discussed herein, and is further
limited by the discussion of Certain Federal Income Tax Consequences in the
Joint Proxy Statement/Prospectus.  We note that the opinion of counsel has no
binding effect or official status of any kind with the Internal Revenue Service
or the courts. We believe that subject to the conditions and assumptions noted
above, it is more likely than not that the conclusions set forth herein would
be sustained by the courts if contested by the Internal Revenue Service.
However, due to uncertainties inherent in the application of federal tax laws
to the Merger, there can be no assurance of such success. If there were
ultimately an adverse determination as to any of the tax issues discussed
herein or in the Joint Proxy Statement/Prospectus, ITEQ, Astrotech and the
Astrotech stockholders could sustain different tax consequences than are
described herein or in the Joint Proxy Statement/Prospectus.

         Our opinion is based upon existing laws, regulations, administrative
authorities and judicial decisions, all of which could change with retroactive
effect.  We have no duty, and do not intend, to update or modify this opinion
for changes in the applicable law, regulations or interpretations occurring
after the date hereof.  Similarly, any change in the facts and assumptions
stated above, upon which this opinion is based, could modify our conclusions.

         We consent to the use of this opinion as an exhibit to the
Registration Statement on Form S-4 filed by ITEQ and Astrotech and to the
reference to us under the caption "Certain Federal Income Tax Consequences" in
the Joint Proxy Statement/Prospectus forming a part of the Registration
Statement.

                                                Very truly yours,



   
                                                /s/ PORTER & HEDGES, L.L.P.
    






<PAGE>   1

                                                                   EXHIBIT 23.7

                          CONSENT OF INVESTMENT BANKER

         We consent to the inclusion in this Registration Statement on Form S-4
of the form of our opinion attached as Appendix B thereto regarding the
fairness, from a financial point of view, of the consideration to be paid in
connection with a certain transaction.  We also consent to the references to
our firm contained in such registration statement including, but not limited
to, "The Merger  -- Opinion of Simmons."

   
                                             /s/ SIMMONS & COMPANY INTERNATIONAL
    

Houston, Texas
September 30, 1997

<PAGE>   1
                                                                   EXHIBIT 23.8


                          CONSENT OF INVESTMENT BANKER

         We consent to the inclusion in this Registration Statement on Form S-4
of the form of our opinion attached as Appendix C thereto regarding the
fairness, from a financial point of view, of the consideration to be paid in
connection with a certain transaction.  We also consent to the references to
our firm contained in such registration statement including, but not limited
to, "The Merger  -- Opinion of RPR."


   
    
   
                                        By:  /s/ G. CLYDE BUCK
                                            -----------------------------------
                                             G. Clyde Buck - Managing Director

                                             RAUSCHER PIERCE REFSNES, INC.
    

   
Houston, Texas
September 29, 1997
    

<PAGE>   1

                                                                   EXHIBIT 23.9

                                   CONSENT


         The undersigned consents to being named in this Registration Statement
on Form S-4 as a person who is about to become a director of the Registrant.

   
September 27, 1997
    
   
                                       /s/ S. KENT ROCKWELL
                                       ------------------------------
                                       S. Kent Rockwell
    






<PAGE>   1

                                                                  EXHIBIT 23.10

                                    CONSENT


         The undersigned consents to being named in this Registration Statement
on Form S-4 as a person who is about to become a director of the Registrant.

September 30, 1997

   
                                       /s/ NATHAN M. AVERY
                                       ------------------------------
                                       Nathan M. Avery
    


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