EXHIBIT

                ASSIGNMENT SATISFACTION AND INVESTMENT AGREEMENT

         THIS AGREEMENT (this "Agreement") is made and entered into this - day
of April, 2003, by and De Martino Finkelstein Rosen & Virga, a professional
corporation ("DFRV"), Bigmar, Inc. ("Bigmar") and John G. Tramontana ("JT").

                                   WITNESSETH:

         WHEREAS, through the date of this Agreement Bigmar owes DFRV an
aggregate amount of $292,110.61 for services rendered and costs incurred through
December 31, 2002 (the "Receivable");

         WHEREAS, DFRV ceased to represent Bigmar as of December 31, 2003:

         WHEREAS, DFRV has pledged the account receivable owed to it by Bigmar
to Citibank, FSB ("Citibank") as part of a security interest that was granted to
Citibank in all of the accounts receivable of DFRV that secured a line of credit
extended by Citibank to DFRV;

         WHEREAS, as of the date of this Agreement the amount of money owed by
DFRV to Citibank under the line of credit is $185,500, and such line of credit
is due and Receivable;

         WHEREAS, DFRV has threatened to initiate litigation to collect the
Receivable;

         WHEREAS, JT and Bigmar think it is in the best interests of Bigmar to
maintain good professional relations with the former lawyers of DFRV, who
continue to provide legal advice to Bigmar, and who are personally obligated on
the line of credit from Citibank to DFRV, and are interested in entering into a
transaction that. will cause the payment of a substantial amount of the
Receivable; and

         WHEREAS, JT is willing to purchase from DFRV and DFRV is willing to
sell to JT all right, title and interest in the Receivable due to DFRV from
Bigmar, provided that Bigmar is willing to commit that Receivable immediately
and contemporaneously into equity securities of Bigmar; and

         WHEREAS, Bigmar and JT have agreed that Bigmar will immediately issue
to JT three thousand two hundred and three (3,203) shares of its Series C
Preferred Stock in full satisfaction of the indebtedness represented by the
Receivable upon the conclusion of the assignment of that Receivable by DFRV to
Bigmar pursuant to this Agreement;

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
set forth herein, and other good and valuable consideration, receipt of which is
hereby acknowledged, the parties hereby agree as follows:

         1.       As further provided herein, DFRV hereby agrees to sell the
                  Receivable to JT and JT agrees to purchase the Receivable from
                  DFRV free and clear of any lien, claim or encumbrance in
                  consideration of the immediate payment of United States
                  federal funds to DFRV in the amount of $185,500 plus JT's

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                  commitment to pay an additional amount of $106,610.1 (the
                  "Balance of the Consideration") to DFRV within twenty-four
                  months of the date hereof (the "Sale"). The Sale will be
                  effective as of the Effective Date defined in paragraph 2
                  below.

         2.       The Sale will be effective upon the payment of $185,500 in
                  United States federal funds by JT to DFRV (the "Effective
                  Date"). DFRV hereby assigns transfers and sells all of its
                  right, title and interest in the Receivable to JT and DFRV
                  hereby releases Bigmar from any and all obligation to pay any
                  or all of the Receivable, effective upon the Effective Date.
                  DFRV represents, warrants and covenants that as of the
                  Effective Date, DFRV will cause Citibank to release its lien
                  on the Receivable, and title to the Receivable will vest in JT
                  free and clear of any lien, claim or encumbrance.

         3.       Bigmar hereby represents, warrants and covenants that it
                  consents to the transactions contemplated by this Agreement;
                  that it will be obligated to JT for the full amount of the
                  Receivable, effective as of the Effective Date; and it further
                  represents, warrants and covenants that it will issue to JT at
                  the Effective Date three thousand two hundred and three
                  (3,203) shares of its Series C Preferred Stock (the "Share
                  Consideration") in full satisfaction of the indebtedness
                  represented by the Receivable. Bigmar further represents,
                  warrants and agrees that it will deliver certificates
                  representing the Share Consideration at the Effective Date;
                  that it has all corporate power necessary to execute this
                  Agreement and to issue the Share Consideration to JT; that the
                  execution of this Agreement has been duly authorized by it;
                  and that the Conversion Shares, when issued, will be duly
                  issued, fully paid and non-assessable.

         4.       The parties represent, warrant and agree that the certificate
                  or certificates representing the Share Consideration shall be
                  imprinted on its/their face with the restrictive legend
                  generally utilized by Bigmar in connection with the issuance
                  of restricted stock, the effect that the subject securities
                  have not been registered under United States securities laws
                  and may not be transferred or sold absent registration or a
                  legal opinion acceptable in form and substance to the Borrower
                  that an exemption from registration is available.

         5.       JT hereby represents, warrants and covenants that promptly
                  upon the execution of this Agreement JT will cause $185,500 in
                  United States federal funds to be wired to the DFRV Operating
                  Account at Bank of America: 0041 2629 2251; and that he will
                  cause the Balance of the Consideration to be paid to DFRV,
                  with simple annual interest thereon at 10% within twenty-four
                  months of the date hereof.

         6.       As an inducement for Bigmar to issue the Share Consideration
                  to JT, JT further represents, warrants and covenants that he
                  is accepting the Share Consideration for investment purposes
                  and not with a view to resale or distribution; that he is an
                  "accredited investor" as that term is defined by Rule 501(a)
                  of Regulation D promulgated under the Securities Act of 1933,
                  as amended; and that he is a sophisticated investor with
                  access to any and all information regarding Bigmar and its
                  subsidiaries.

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         7.       Each of the parties hereto represents to the other parties
                  that it has the right and power, and has taken all necessary
                  action to authorize it, to execute, deliver and perform under
                  this Agreement, and that this Agreement has been duly executed
                  and delivered by such party and will be, a legal, valid and
                  binding obligation of such party, enforceable against such
                  party in accordance with its terms except as such
                  enforceability may be limited by applicable equitable rights
                  or bankruptcy, insolvency, reorganization or similar laws
                  affecting the performance of creditors' rights.

         8.       This Agreement shall be governed by the laws of the state of
                  Delaware.

         9.       Each party represents that it/he has had the opportunity to
                  confer with independent counsel with respect to this
                  Agreement, and that none of DFRV, Mr. De Martino or Mr. Rosen
                  (affiliates of DFRV) or Dilworth Paxson, LLP has provided
                  legal advice to any party in connection with the transaction
                  contemplated hereby.




                            [SIGNATURE PAGE FOLLOWS.]

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         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date first above written.


                             DE MARTINO FINKELSTEIN ROSEN & VIRGA,
                             a professional corporation


                             By:
                                 -----------------------------------------------
                                 Ralph V. De Martino,
                                 Vice President and Secretary


                             BIGMAR, INC.


                             By:
                                 -----------------------------------------------
                                 Philippe J.H. Rohrer,
                                 Chief Financial Officer, Secretary and Director


                             JOHN G. TRAMONTANA


                             ---------------------------------------------------
                             John G. Tramontana



Enclosure

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