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                                                                    EXHIBIT 10.3

                               CAMINUS CORPORATION

                        1999 EMPLOYEE STOCK PURCHASE PLAN

     The purpose of this Plan is to provide eligible employees of Caminus
Corporation, a Delaware corporation (the "Company"), and certain of its
subsidiaries with opportunities to purchase shares of the Company's common
stock, $0.01 par value per share (the "Common Stock"). Ninety-five thousand, two
hundred thirty-eight (95,238) shares of Common Stock in the aggregate have been
approved for this purpose. This Plan is intended to qualify as an "employee
stock purchase plan" as defined in Section 423 of the Internal Revenue Code of
1986, as amended (the "Code"), and the regulations promulgated thereunder, and
shall be interpreted consistent therewith.

     1.   Administration. The Plan will be administered by the Board or by a
Committee appointed by the Board (the "Committee"). The Board or the Committee
has authority to make rules and regulations for the administration of the Plan
and its interpretation and decisions with regard thereto shall be final and
conclusive.

     2.   Eligibility. All employees of the Company, including Directors who are
employees, and all employees of any subsidiary of the Company (as defined in
Section 424(f) of the Code) designated by the Board or the Committee from time
to time (a "Designated Subsidiary"), are eligible to participate in any one or
more of the offerings of Options (as defined in Section 9) to purchase Common
Stock under the Plan provided that:

          (a) they are customarily employed by the Company or a Designated
     Subsidiary for more than 20 hours a week and for more than five months in a
     calendar year; and

          (b) they have been employed by the Company or a Designated Subsidiary
     for at least three months prior to enrolling in the Plan; provided,
     however, that, with respect to the first Plan Period (as defined below),
     the have been employed by the Company or a Designated Subsidiary since
     December 31, 1999; and

          (c) they are employees of the Company or a Designated Subsidiary on
     the first day of the applicable Plan Period (as defined below).

     No employee may be granted an option hereunder if such employee,
immediately after the option is granted, owns 5% or more of the total combined
voting power or value of the stock of the Company or any subsidiary. For
purposes of the preceding sentence, the attribution rules of Section 424(d) of
the Code shall apply in

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determining the stock ownership of an employee, and all stock which the employee
has a contractual right to purchase shall be treated as stock owned by the
employee.

     3.   Offerings. The Company will make one or more offerings ("Offerings")
to employees to purchase stock under this Plan. Offerings will begin on such
date or dates as may be established by the Board or the Committee from time to
time (the "Offering Commencement Dates"). Each Offering Commencement Date will
begin a six-month period (a "Plan Period") during which payroll deductions will
be made and held for the purchase of Common Stock at the end of the Plan Period.
The Board or the Committee may, at its discretion, choose a different Plan
Period of twelve (12) months or less for its Offerings.

     4.   Participation. An employee eligible on the Offering Commencement Date
of any Offering may participate in such Offering by completing and forwarding a
payroll deduction authorization form to the employee's appropriate payroll
office on or before the applicable Offering Commencement Date, as determined by
the Board or the Committee from time to time. The form will authorize a regular
payroll deduction from the Compensation received by the employee during the Plan
Period. Unless an employee files a new form or withdraws from the Plan, his
deductions and purchases will continue at the same rate for future Offerings
under the Plan as long as the Plan remains in effect. The term "Compensation"
means the amount of money reportable on the employee's Federal Income Tax
Withholding Statement, excluding overtime, shift premium, allowances and
reimbursements for expenses such as relocation allowances for travel expenses,
income or gains on the exercise of Company stock options or stock appreciation
rights, and similar items, whether or not shown on the employee's Federal Income
Tax Withholding Statement, but including, in the case of salespersons, sales
commissions to the extent determined by the Board or the Committee.

     5.   Deductions. The Company will maintain payroll deduction accounts for
all participating employees. With respect to any Offering made under this Plan,
an employee may authorize a payroll deduction, as set forth below, from the
Compensation he or she receives during the Plan Period or such shorter period
during which deductions from payroll are made. Payroll deductions may be at the
rate of 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% or 10% of Compensation with any
change in compensation during the Plan Period to result in an automatic
corresponding change in the dollar amount withheld.

     No employee may be granted an Option (as defined in Section 9) which
permits his rights to purchase Common Stock under this Plan and any other
employee stock purchase plan (as defined in Section 423(b) of the Code) of the
Company and its subsidiaries, to accrue at a rate which exceeds $25,000 of the
fair market value of such

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Common Stock (determined at the Offering Commencement Date of the Plan Period)
for each calendar year in which the Option is outstanding at any time.

     6.   Deduction Changes. An employee may decrease or discontinue his payroll
deduction once during any Plan Period, by filing a new payroll deduction
authorization form. However, an employee may not increase his payroll deduction
during a Plan Period. If an employee elects to discontinue his payroll
deductions during a Plan Period, but does not elect to withdraw his funds
pursuant to Section 8 hereof, funds deducted prior to his election to
discontinue will be applied to the purchase of Common Stock on the Exercise Date
(as defined below).

     7.   Interest. Interest will not be paid on any employee accounts, except
to the extent that the Board or the Committee, in its sole discretion, elects to
credit employee accounts with interest at such per annum rate as it may from
time to time determine.

     8.   Withdrawal of Funds. An employee may at any time prior to the close of
business on the last business day in a Plan Period and for any reason
permanently draw out the balance accumulated in the employee's account and
thereby withdraw from participation in an Offering. Partial withdrawals are not
permitted. The employee may not begin participation again during the remainder
of the Plan Period. The employee may participate in any subsequent Offering in
accordance with terms and conditions established by the Board or the Committee.

     9.   Purchase of Shares. On the Offering Commencement Date of each Plan
Period, the Company will grant to each eligible employee who is then a
participant in the Plan an option ("Option") to purchase on the last business
day of such Plan Period (the "Exercise Date"), at the Option Price hereinafter
provided for, the largest number of whole shares of Common Stock of the Company
as does not exceed the number of shares determined by multiplying $2,083 by the
number of full months in the Plan Period and dividing the result by the closing
price (as defined below) on the Offering Commencement Date of such Plan Period.

     The purchase price for each share purchased will be 85% of the closing
price of the Common Stock on (i) the first business day of such Plan Period or
(ii) the Exercise Date, whichever closing price shall be less. Such closing
price shall be (a) the closing price on any national securities exchange on
which the Common Stock is listed, (b) the closing price of the Common Stock on
the Nasdaq National Market or (c) the average of the closing bid and asked
prices in the over-the-counter-market, whichever is applicable, as published in
The Wall Street Journal. If no sales of Common Stock were made on such a day,
the price of the Common Stock for purposes of clauses (a) and (b) above shall be
the reported price for the next preceding day on which sales were made.
Notwithstanding the foregoing, in the event the first business day of a Plan
Period is the

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effective date of the Registration Statement on Form S-1 relating to the
Company's initial public offering of Common Stock, the closing price for such
first business day shall be deemed to be the initial public offering price of
the Common Stock.

     Each employee who continues to be a participant in the Plan on the Exercise
Date shall be deemed to have exercised his Option at the Option Price on such
date and shall be deemed to have purchased from the Company the number of full
shares of Common Stock reserved for the purpose of the Plan that his accumulated
payroll deductions on such date will pay for, but not in excess of the maximum
number determined in the manner set forth above.

     Any balance remaining in an employee's payroll deduction account at the end
of a Plan Period will be automatically refunded to the employee, except that any
balance which is less than the purchase price of one share of Common Stock will
be carried forward into the employee's payroll deduction account for the
following Offering, unless the employee elects not to participate in the
following Offering under the Plan, in which case the balance in the employee's
account shall be refunded.

     10.  Issuance of Certificates. Certificates representing shares of Common
Stock purchased under the Plan may be issued only in the name of the employee,
in the name of the employee and another person of legal age as joint tenants
with rights of survivorship, or (in the Company's sole discretion) in the name
of a brokerage firm, bank or other nominee holder designated by the employee.
The Company may, in its sole discretion and in compliance with applicable laws,
authorize the use of book entry registration of shares in lieu of issuing stock
certificates.

     11.  Rights on Retirement, Death or Termination of Employment. In the event
of a participating employee's termination of employment prior to the last
business day of a Plan Period, no payroll deduction shall be taken from any pay
due and owing to an employee and the balance in the employee's account shall be
paid to the employee or, in the event of the employee's death, (a) to a
beneficiary previously designated in a revocable notice signed by the employee
(with any spousal consent required under state law) or (b) in the absence of
such a designated beneficiary, to the executor or administrator of the
employee's estate or (c) if no such executor or administrator has been appointed
to the knowledge of the Company, to such other person(s) as the Company may, in
its discretion, designate. If, prior to the last business day of the Plan
Period, the Designated Subsidiary by which an employee is employed shall cease
to be a subsidiary of the Company, or if the employee is transferred to a
subsidiary of the Company that is not a Designated Subsidiary, the employee
shall be deemed to have terminated employment for the purposes of this Plan.

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     12.  Optionees Not Stockholders. Neither the granting of an Option to an
employee nor the deductions from his pay shall constitute such employee a
stockholder of the shares of Common Stock covered by an Option under this Plan
until such shares have been purchased by and issued to him.

     13.  Transferability; Lock-up. Rights under this Plan are not transferable
by a participating employee other than by will or the laws of descent and
distribution, and are exercisable during the employee's lifetime only by the
employee. The Board or the Committee, in its sole discretion, may provide that
shares of Common Stock issuable upon the exercise of an Option may not be sold,
assigned, transferred, pledged or otherwise encumbered by the employee for a
period of up to 180 days from the Exercise Date of the applicable Plan Period
(the "Lock-up Provisions"); provided, however, that all participants exercising
Options during such Plan Period shall be subject to the same Lock-up Provisions;
and provided further, however, that the Company shall provide all participants
in such Plan Period with written notice (including electronic notice) of the
Lock-up Provisions at least 10 days prior to the Exercise Date of such Plan
Period.

     14.  Application of Funds. All funds received or held by the Company under
this Plan may be combined with other corporate funds and may be used for any
corporate purpose.

     15.  Adjustment in Case of Changes Affecting Common Stock. In the event of
a subdivision of outstanding shares of Common Stock, or the payment of a
dividend in Common Stock, the number of shares approved for this Plan, and the
share limitation set forth in Section 9, shall be increased proportionately, and
such other adjustment shall be made as may be deemed equitable by the Board or
the Committee. In the event of any other change affecting the Common Stock, such
adjustment shall be made as may be deemed equitable by the Board or the
Committee to give proper effect to such event.

     16.  Merger. If the Company shall at any time merge or consolidate with
another corporation and the holders of the capital stock of the Company
immediately prior to such merger or consolidation continue to hold at least 80%
by voting power of the capital stock of the surviving corporation ("Continuity
of Control"), the holder of each Option then outstanding will thereafter be
entitled to receive at the next Exercise Date upon the exercise of such Option
for each share as to which such Option shall be exercised the securities or
property which a holder of one share of the Common Stock was entitled to upon
and at the time of such merger or consolidation, and the Board or the Committee
shall take such steps in connection with such merger or consolidation as the
Board or the Committee shall deem necessary to assure that the provisions of
Section 15 shall thereafter be applicable, as nearly as reasonably may be, in
relation to the said securities or property as to which such holder of such
Option might thereafter be entitled to receive thereunder.

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     In the event of a merger or consolidation of the Company with or into
another corporation which does not involve Continuity of Control, or of a sale
of all or substantially all of the assets of the Company while unexercised
Options remain outstanding under the Plan, (a) subject to the provisions of
clauses (b) and (c), after the effective date of such transaction, each holder
of an outstanding Option shall be entitled, upon exercise of such Option, to
receive in lieu of shares of Common Stock, shares of such stock or other
securities as the holders of shares of Common Stock received pursuant to the
terms of such transaction; or (b) all outstanding Options may be cancelled by
the Board or the Committee as of a date prior to the effective date of any such
transaction and all payroll deductions shall be paid out to the participating
employees; or (c) all outstanding Options may be cancelled by the Board or the
Committee as of the effective date of any such transaction, provided that notice
(including electronic notice) of such cancellation shall be given to each holder
of an Option, and each holder of an Option shall have the right to exercise such
Option in full based on payroll deductions then credited to his account as of a
date determined by the Board or the Committee, which date shall not be less than
ten (10) days preceding the effective date of such transaction.

     17.  Amendment of the Plan. The Board may at any time, and from time to
time, amend this Plan in any respect, except that (a) if the approval of any
such amendment by the stockholders of the Company is required by Section 423 of
the Code, such amendment shall not be effected without such approval, and (b) in
no event may any amendment be made which would cause the Plan to fail to comply
with Section 423 of the Code.

     18.  Insufficient Shares. In the event that the total number of shares of
Common Stock specified in elections to be purchased under any Offering plus the
number of shares purchased under previous Offerings under this Plan exceeds the
maximum number of shares issuable under this Plan, the Board or the Committee
will allot the shares then available on a pro rata basis.

     19.  Termination of the Plan. This Plan may be terminated at any time by
the Board. Upon termination of this Plan all amounts in the accounts of
participating employees shall be promptly refunded.

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     20.  Governmental Regulations. The Company's obligation to sell and deliver
Common Stock under this Plan is subject to listing on a national stock exchange
or quotation on the Nasdaq National Market (to the extent the Common Stock is
then so listed or quoted) and the approval of all governmental authorities
required in connection with the authorization, issuance or sale of such stock.

     21.  Governing Law. The Plan shall be governed by Delaware law except to
the extent that such law is preempted by federal law.

     22.  Issuance of Shares. Shares may be issued upon exercise of an Option
from authorized but unissued Common Stock, from shares held in the treasury of
the Company, or from any other proper source.

     23.  Notification upon Sale of Shares. Each employee agrees, by entering
the Plan, to promptly give the Company notice of any disposition of shares
purchased under the Plan where such disposition occurs within two years after
the date of grant of the Option pursuant to which such shares were purchased.

     24.  Effective Date and Approval of Shareholders. The Plan shall take
effect upon the effectiveness of the Company's registration statement under the
Securities Act of 1933, as amended, relating to the Company's initial public
offering of Common Stock, subject to approval by the stockholders of the Company
as required by Section 423 of the Code, which approval must occur within twelve
months of the adoption of the Plan by the Board.

                                            Adopted by the Board of Directors
                                            on September 30, 1999

                                            Approved by the stockholders
                                            on September 30, 1999

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                                                                   EXHIBIT 10.28

                                    AGREEMENT

     This Agreement dated as of January 21, 2000 is entered into by and between
Caminus LLC, a Delaware limited liability company (the "Company"), and GFI Two
LLC (formerly, GFI Energy Ventures LLC) ("GFI").

     WHEREAS, the Company and GFI are each party to that certain Limited
Liability Company Agreement dated as of May 12, 1998 (the "LLC Agreement");

     WHEREAS, pursuant to Section 6.5.2 of the LLC Agreement, GFI provides
certain financial, strategic mergers and acquisition, tax and general
administrative services to the Company in exchange for certain payments by the
Company;

     WHEREAS, the Company is effecting a reorganization (the "Reorganization")
pursuant to which the members of the Company will exchange their shares of
membership interest in the Company for shares of common stock of a Delaware
C-corporation (the "Surviving Corporation");

     WHEREAS, effective upon the closing of the Reorganization and pursuant to
that certain Merger Agreement by and among the Company, the Surviving
Corporation and a wholly-owned subsidiary of the Surviving Corporation, certain
portions of the LLC Agreement, including Section 6.5.2 thereof, will be
terminated; and

     WHEREAS, the Company and GFI desire to formally memorialize their mutual
understanding with respect to the termination of Section 6.5.2 of the LLC
Agreement and the payment in full by the Company of all amounts due thereunder
to GFI for financial, tax and general administrative services provided by GFI to
the Company.

     NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, the receipt and sufficiency of which are hereby acknowledged,
the Company and GFI agree as follows:

     1.   Effective upon the closing of the Reorganization, (i) the provisions
of Section 6.5.2 of the LLC Agreement be and hereby are terminated and (ii)
except as set forth in Section 2 below, the Company and GFI hereby waive their
respective rights and hereby release each other from their respective
obligations under Section 6.5.2 of the LLC Agreement.

     2.   Notwithstanding the foregoing, (i) the Company shall continue to pay
GFI a management fee, calculated in accordance with Section 6.5.2 of the LLC
Agreement, for financial, tax and general administrative services provided by
GFI through the Reorganization; and (ii) within three business days following
the closing date of the

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initial public offering of common stock of the Surviving Corporation, the
Company shall pay to GFI an amount equal to $1,300,000 in consideration for
termination of the provisions of Section 6.5.2 of the LLC Agreement.

     3.   If the initial public offering does not close by February 15, 2000,
this Agreement will automatically terminate and be of no force or effect
proactively or retroactively and the Company and GFI will both be in such
position as if this Agreement was never entered into.

     4.   The existence, validity and construction of this Agreement shall be
governed by the laws of the State of Delaware.

     5.   This Agreement may be executed in any number of counterparts, and each
such counterpart shall be deemed to be an original instrument, but all such
counterparts together shall constitute but one agreement.

     IN WITNESS WHEREOF the parties hereto have executed this Amendment on the
date first above written.

                                          CAMINUS LLC

                                          /s/ Mark A. Herman
                                          -----------------------------
                                          By:  Mark A. Herman
                                          Its: CFO

                                          GFI TWO LLC
                                          /s/ Lawrence D. Gilson
                                          ------------------------------
                                          By:  Lawrence D. Gilson
                                          Its: Chairman

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