Document:

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                                                                   EXHIBIT 10.15

                                  ORBCOMM INC.
                                STOCK OPTION PLAN

          1. Purpose of Plan.

          The Orbcomm Inc. Stock Option Plan (the "Plan") is designed:

          (a) to promote the long term financial interests and growth of Orbcomm
     Inc. (the "Company") and its affiliates by attracting and retaining
     directors, employees and independent contractors with the training,
     experience and ability to enable them to make a substantial contribution to
     the success of the Company's business;

          (b) to motivate directors, employees and independent contractors by
     means of growth-related incentives to achieve long range goals; and

          (c) to further the alignment of interests of participants with those
     of the equityholders of the Company through opportunities for increased
     ownership in the Company.

          2. Definitions.

          As used in the Plan, the following words will have the following
meanings:

          (a) "Affiliate" means, with respect to the Company, any corporation
     directly or indirectly controlling, controlled by, or under common control
     with, the Company or any other entity designated by the Committee in which
     the Company or an Affiliate has an interest.

          (b) "Board" means the Board of Directors of the Company.

          (c) "Change of Control" means the purchase or other acquisition by any
     person, entity or group of persons, within the meaning of Section 13(d) or
     14(d) of the Exchange Act, or any comparable successor provisions, of (i)
     ownership of 50% or more of the combined voting power of the Company's then
     outstanding voting securities entitled to vote generally or (ii) all or
     substantially all of the direct and indirect assets of the Company and its
     subsidiaries, other than by a person, firm, entity or group, which together
     with its affiliates, prior to such purchase or other acquisition, owned at
     least 50% of the outstanding common equity of the Company.

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                         ORBCOMM INC. STOCK OPTION PLAN

          (d) "Code" means the Internal Revenue Code of 1986, as amended.

          (e) "Committee" means the Compensation Committee of the Board, or if
     there is no Compensation Committee, the Board. Unless otherwise determined
     by the Board, if the common stock becomes registered under Section 12 of
     the Exchange Act and if the Committee is authorized to grant Options
     subject to Section 16 of the Exchange Act, each member of the Committee
     will be a "non-employee director" within the meaning of applicable Rule
     16b-3 under the Exchange Act. If there is an Initial Public Offering, each
     grant of an Option to a "covered employee" within the meaning of Code
     Section 162(m) will be made by a Committee which is comprised solely of two
     or more "outside directors" within the meaning of Code Section 162(m).

          (f) "Common Stock" means Common Stock, par value $0.001 per share, of
     the Company.

          (g) "Employee" means a person, including an officer, in the regular
     full-time employ of the Company or one of its Affiliates who, in the
     opinion of the Committee, is, or is expected to be, primarily responsible
     for the management, growth or protection of some part or all of the
     business of the Company.

          (h) "Exchange Act" means the Securities Exchange Act of 1934, as
     amended.

          (i) "Fair Market Value" means with respect to a Share, the fair market
     value of a Share as determined by the Committee in good faith.
     Notwithstanding the preceding, the Board will determine the Fair Market
     Value of a Share for initial Grants under the Plan. Subsequent to an
     Initial Public Offering, the Fair Market Value of a share of Common Stock
     will be the average of high bid and low asked prices of Common Shares as
     reported on the exchange on which it is listed as of such date, or if no
     such quotation is made on such date, the immediately preceding day on which
     there were quotations as reported in The Wall Street Journal.

          (j) "Grant" means an award made to a Participant pursuant to the Plan
     and described in Paragraph 5.

          (k) "Incentive Stock Option" means an Option which satisfies all of
     the applicable requirements of Code Section 422.

          (l) "Initial Public Offering" means a registered underwritten public
     offering of Common Stock pursuant to an effective registration statement
     under

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                         ORBCOMM INC. STOCK OPTION PLAN

     the Securities Act, which results in an active trading market in such
     Common Stock. If such Common Stock is listed on a national securities
     exchange or is quoted on the NASDAQ National Market, it will be deemed to
     be actively traded.

          (m) "Non-Statutory Stock Option" means an Option which does not
     satisfy all of the applicable requirements of Code Section 422 or which by
     its terms is not intended to be treated as an Incentive Stock Option.

          (n) "Option" means an option to purchase Common Stock.

          (o) "Option Agreement" means an agreement between the Company and a
     Participant that sets forth the terms, conditions and limitations
     applicable to a Grant.

          (p) "Participant" means a director, an Employee, an independent
     contractor or a person having a unique relationship with the Company or one
     of its Affiliates, to whom one or more Grants have been made and such
     Grants have not all been forfeited or terminated under the Plan.

          (q) "Securities Act" means the Securities Act of 1933, as amended.

          (r) "Share" means a share of Common Stock.

          (s) "Subsidiary" means any entity in an unbroken chain of entities
     beginning with the Company if each of the entities, or group of commonly
     controlled entities, other than the last entity in the unbroken chain then
     owns 50% or more of the total combined voting power of the other entities
     in such chain.

          3. Administration of Plan.

          (a) The Plan will be administered by the Committee. Except as provided
in Section 4, the members of the Committee will be eligible to be selected for
Grants under the Plan; provided, however, that the members of the Committee will
(i) qualify to administer the Plan for purposes of Rule 16b-3 (and any other
applicable rule) promulgated under Section 16(b) of the Exchange Act to the
extent that the Company is subject to such rule, and (ii) if there is an Initial
Public Offering, consist solely of two or more "outside directors" within the
meaning of Code Section 162(m) for purposes of making grants to "covered
employees" within the meaning of Code Section 162(m). The Committee may adopt
its own rules of procedure. Action of a majority of the members of the Committee
taken at a meeting, or action taken without a meeting by unanimous written
consent, will constitute action by the Committee. The Committee will have the
power and authority to administer, construe and interpret the Plan, to make
rules

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                         ORBCOMM INC. STOCK OPTION PLAN

for carrying it out and to make changes to such rules. Any such interpretations,
rules, and administration will be consistent with the basic purposes of the
Plan.

          (b) The Committee may employ attorneys, consultants, accountants,
appraisers, brokers or other persons. The Committee, the Company, and the
officers of the Company will be entitled to rely upon the advice, opinions or
valuations of any such persons. All actions taken and all interpretations and
determinations made by the Committee in good faith will be final and binding
upon all Participants, the Company and all other interested persons. No member
of the Committee will be personally liable for any action, determination or
interpretation made in good faith with respect to the Plan or the Grants, and
all members of the Committee will be fully protected by the Company with respect
to any such action, determination or interpretation.

          4. Eligibility.

          Subject to Section 5(a), the Committee may from time to time make
Grants under the Plan to such directors of the Company or Employees, independent
contractors or other persons having a unique relationship with the Company or
any of its Affiliates, and in such form and having such terms, conditions and
limitations as the Committee may determine. Notwithstanding the preceding, the
Board will make the initial Grants under the Plan. In addition, notwithstanding
the preceding, management of the Company may, subject to final approval by the
Committee, make Grants under the Plan to such Employees (excluding any member of
management), independent contractors or other persons having a unique
relationship with the Company or any of its Affiliates, and in such form and
having such terms, conditions and limitations as management may determine.
Grants may be granted singly, in combination or in tandem. The terms, conditions
and limitations of each Grant under the Plan will be set forth in an Option
Agreement, in a form approved by the Committee, consistent, however, with the
terms of the Plan; provided, however, that such Option Agreement will contain
provisions dealing with the treatment of Grants in the event of the termination,
death or disability of a Participant, and may also include provisions concerning
the treatment of Grants in the event of a Change of Control of the Company.
Notwithstanding the foregoing, Incentive Stock Options may only be granted to
Employees.

          5. Grants.

          (a) The Committee may grant Incentive Stock Options only to Employees
of the Company or any "subsidiary corporation" within the meaning of Code
Section 424(f). The Committee may grant Non-Statutory Stock Options to
directors, Employees, independent contractors, and other persons having a unique
relationship with the Company or any of its Affiliates.

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                         ORBCOMM INC. STOCK OPTION PLAN

          (b) At the time of the Grant, the Committee will determine, and will
include in the Option Agreement or other Plan rules, the Option exercise price,
the Option price, and such other conditions and restrictions on the grant or
exercise of the Option as the Committee deems appropriate.

          (c) In addition to any other restrictions contained in the Plan, an
Option granted under the Plan may not be exercised more than 10 years after the
date it is granted. An Incentive Stock Option may not have an exercise price of
less than 100% of the Fair Market Value of a Share on the date the Option is
granted.

          (d) If the aggregate Fair Market Value (determined on the date the
Option is granted) of a Share subject to an Incentive Stock Option which is
exercisable for the first time during any calendar year exceeds $100,000, then
the portion of the Incentive Stock Option in excess of the $100,000 limitation
will be treated as a Non-Statutory Stock Option. If an Incentive Stock Option is
granted to a Participant who, at the time the Option is granted, is deemed to
own more than 10% of the total combined voting power of all classes of stock of
the Company or any "subsidiary corporation" of the Company (as more fully
described in Code Section 422(b)(6)), then (i) the exercise price of the Option
may not be less than 110% of the Fair Market Value of the Common Stock on the
date the Option is granted, and (ii) such Option may not be exercisable after
the expiration of five years from the date the Option is granted.

          (e) Payment of the Option price will be made in cash or, if subsequent
to an Initial Public Offering, in shares of Common Stock that have been held for
at least six months or through the delivery of irrevocable instructions to a
broker to deliver promptly to the Company an amount equal to the Option price or
any combination thereof, in accordance with the terms of the Plan, the Option
Agreement and of any applicable guidelines of the Committee in effect at the
time.

          6. Limitations and Conditions.

          (a) The total number of Shares available for Grants under the Plan
will be 2,500,000 Shares, subject to adjustment in accordance with Section 7 or
8 hereof. Unless the Shares are restricted by applicable law, or are Shares
related to Grants that are forfeited, terminated, canceled or expire
unexercised, the Shares will immediately become available for Grants. The Stock
issuable under the Plan will consist of shares of authorized but unissued or
reacquired Common Stock, including shares repurchased by the Company on the open
market. Subsequent to an Initial Public Offering, the maximum number of Shares
that may be issued in connection with any Option granted under this Plan for any
Participant will not exceed 500,000 Shares in any calendar year.

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                         ORBCOMM INC. STOCK OPTION PLAN

          (b) No Grants will be made under the Plan beyond 10 years after the
date the Plan is adopted by the Board or is approved by the shareholders of the
Company, whichever is earlier, but the terms of Grants made on or before the
expiration of the Plan may extend beyond such expiration. At the time a Grant is
made or amended or the terms or conditions of a Grant are changed, the Committee
may provide for limitations or conditions on such Grant.

          (c) Nothing contained herein will affect the right of the Company to
terminate any Participant's employment or services at any time or for any
reason.

          (d) Other than as specifically provided with regard to the death of a
Participant, no benefit under the Plan will be subject in any manner to
anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, or
charge, and any attempt to do so will be void. No such benefit will, prior to
receipt thereof by the Participant, be in any manner liable for or subject to
the debts, contracts, liabilities, engagements, or torts of the Participant.

          (e) Participants will not be, and will not have any of the rights or
privileges of, equityholders of the Company in respect of any Shares of Common
Stock which may be purchased in connection with any Grant unless and until
certificates representing any such Shares have been issued by the Company to
such Participants. Prior to an Initial Public Offering, each Participant will be
required to enter into a shareholder agreement with the Company, in a form
provided by the Company, upon the exercise of any Option under the Plan.

          (f) No election as to benefits or exercise of Options, or other rights
may be made during a Participant's lifetime by anyone other than the Participant
except by a legal representative appointed for or by the Participant.

          (g) Absent express provisions to the contrary, any grant under the
Plan will not be deemed compensation for purposes of computing benefits or
contributions under any retirement plan of the Company or its Subsidiaries and
will not affect any benefits under any other benefit plan of any kind now or
subsequently in effect under which the availability or amount of benefits is
related to level of compensation. The Plan is not an "employee benefit plan"
within the meaning of Section 3(3) of the Employee Retirement Income Security
Act of 1974, as amended.

          (h) Unless the Committee determines otherwise, no benefit or promise
under the Plan will be secured by any specific assets of the Company or any of
its Subsidiaries, nor will any assets of the Company or any of its Subsidiaries
be designated as attributable or allocated to the satisfaction of the Company's
obligations under the Plan.

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                         ORBCOMM INC. STOCK OPTION PLAN

          7. Adjustments.

          In the event of any change in the outstanding Shares by reason of an
acquisition, spin-off or reclassification, recapitalization or merger,
combination or exchange of Shares or other corporate exchange, Change of Control
or similar event, or as required under any Option Agreement, the Committee may
adjust appropriately the number or kind of Shares or securities subject to the
Plan and available for or covered by Grants and Share prices related to
outstanding Grants and make such other revisions to outstanding Grants as it
deems are equitably required. Any such adjustments for Incentive Stock Options
must meet the requirements of Code Section 424(a).

          8. Merger, Consolidation, Exchange, Acquisition, Liquidation or
Dissolution.

          In its absolute discretion, and on such terms and conditions as it
deems appropriate, coincident with or after the grant of any Option, the
Committee may provide, with respect to the merger or consolidation of the
Company into another corporation, the exchange of all or substantially all of
the assets of the Company for the securities of another corporation, a Change of
Control or the recapitalization, reclassification, liquidation or dissolution of
the Company, either (a) that such Option cannot be exercised after such event,
in which case the Committee will also provide, either by the terms of such
Option or by a resolution adopted prior to the occurrence of such event, that
for some period of time prior to such event, such Option will be exercisable as
to all Shares subject thereto which are exercisable or, by virtue of the event,
become exercisable, notwithstanding anything to the contrary herein (but subject
to the provisions of Paragraph 6(b)) and that, upon the occurrence of such
event, such Option will terminate and be of no further force or effect, or (b)
that even if the Option will remain exercisable after such event, from and after
such event, any such Option will be exercisable only for the kind and amount of
securities and/or other property, or the cash equivalent thereof, receivable as
a result of such event by the holder of a number of Shares for which such Option
could have been exercised immediately prior to such event.

          In addition, in the event of a Change of Control, the Committee may,
in its absolute discretion and on such terms and conditions as it deems
appropriate, provide, either by the terms of such Option or by a resolution
adopted prior to the occurrence of the Change of Control, that such Option will
be exercisable as to all or any portion of the Shares subject thereto,
notwithstanding anything to the contrary herein (but subject to the provisions
of Paragraph 6(b)).

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                         ORBCOMM INC. STOCK OPTION PLAN

          9. Amendment and Termination.

          The Committee will have the authority to make such amendments to any
terms and conditions applicable to outstanding Grants as are consistent with the
Plan provided that, except for adjustments under Paragraph 7 or 8, no such
action will modify such Grant in a manner adverse to the Participant without the
Participant's consent except as such modification is provided for or
contemplated in the terms of the Grant.

          The Committee may amend, suspend or terminate the Plan. However, no
such action, other than an action under Paragraph 7 or 8, may be taken which
would increase the aggregate number of Shares available for Grants under the
Plan, change the eligible class of individuals, decrease the price of
outstanding Options, change the requirements relating to the Committee or extend
the term of the Plan if shareholder approval is required for such action to
maintain an exemption under Section 16(b) of the Exchange Act or to meet the
applicable requirements of Code Section 422.

          10. Withholding Taxes.

          The Company will have the right to deduct from any cash payment made
under the Plan any federal, state or local income or other taxes required by law
to be withheld with respect to such payment. The Participant must pay to the
Company such amount as may be requested by the Company for the purpose of
satisfying any liability for such withholding taxes before the obligation of the
Company to deliver certificates for the Shares upon the exercise of an Option
arises. Any Option Agreement may provide that the Participant may elect, in
accordance with any conditions set forth in such Option Agreement, to pay a
portion or all of such withholding taxes in Shares.

          11. Governing Law.

          The Plan will be governed by and construed and enforced in accordance
with the laws of the State of Delaware, without regard to the conflicts of laws
principles thereof.

          12. Effective Date and Termination Date.

          The Plan will be effective on and as of the date of its adoption by
the Board and approval by the shareholders of the Company and will terminate 10
years after the earlier of such dates, subject to earlier termination pursuant
to Paragraph 9. The Plan was adopted by the Board of Directors on February 17,
2004 and approved by the shareholders of the Company on February 17, 2004.

                                       8<PAGE>

                                                                   Exhibit 10.17

                        Incentive Stock Option Agreement
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                              [FOR EMPLOYEES ONLY]

          AGREEMENT (this "Agreement") entered into as of the ____ day of
______________, ____ by and between Orbcomm Inc., a Delaware corporation (the
"Company"), and the undersigned employee (the "Employee") of the Company.

          WHEREAS, pursuant to the Orbcomm Inc. Stock Option Plan (the "Plan"),
the Company desires to grant to the Employee an option to acquire shares of
Common Stock, par value $0.001 per share, of the Company ("Shares"); and

          WHEREAS, the Employee desires to accept such option subject to the
terms and conditions of this Agreement.

          NOW, THEREFORE, in consideration of the premises and of the mutual
covenants and agreements contained herein, the Company and the Employee,
intending to be legally bound, hereby agree as follows:

          1. Grant of Option. On the terms and conditions hereinafter set forth,
the Company hereby grants to the Employee an option to purchase all (or any
part) of ______ Shares (the "Option"). This Option is granted on
_______________, ________ (the "Grant Date"). The Option is intended to be an
Incentive Stock Option. This Option is granted pursuant to the Plan, and is
governed by the terms and conditions of the Plan. All defined terms used herein,
unless specifically defined in this Agreement, have the meanings assigned to
them in the Plan.

          2. Exercise Price. The exercise price (the "Exercise Price") for the
Shares covered by the Option will be $_______.

          3. Time of Exercise of Option.

          (a) The Option will become exercisable as follows:

               (i) [_____]% will be exercisable immediately;

               (ii) the remaining [_____]% will be exercisable at the rate of
6.25% per calendar quarter as of the last day of the calendar quarter coincident
with or immediately following the Grant Date, until 100% of the Option will be
exercisable on the last day of the calendar quarter immediately preceding or
coincident with the fourth anniversary of the Grant Date.
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                         ORBCOMM INC. STOCK OPTION PLAN

          (b) Notwithstanding any other provision of this Agreement to the
contrary, the Option will become immediately fully exercisable on the date of
any Change of Control (as defined in the Plan), without regard to the
satisfaction of any time-based criteria.

          4. Term of Options.

          (a) The Option will expire 10 years from the date hereof, but will be
subject to earlier termination as provided below.

          (b) Upon ceasing to be an Employee,

               (i) the unexercisable portion of the Option hereby granted will
terminate on the date of such termination of employment.

               (ii) the exercisable portion of the Option hereby granted will be
treated as follows:

                    (A) Subject in each case to the repurchase rights described
in Paragraph 5 below and the Shareholders' Agreement (defined below), if the
Company terminates the Employee for any reason except for Cause or if the
Employee voluntarily ceases to be an employee, the exercisable portion of the
Option hereby granted will be exercisable for thirty days following the
termination of employment, unless the Employee terminates employment because the
Employee in Disabled or if the Employee dies, in which case, such Employee, or
such Employee's personal representative, respectively, may exercise the
exercisable portion of the Option hereby granted for three months following the
termination of employment because the Employee is Disabled or has died.

                    (B) If the Employee is terminated for Cause, the exercisable
portion of the Option hereby granted will terminate on the date of such
termination of employment.

               (i) For purposes of this Agreement, "Cause" means the definition
     thereof contained in such Employee's employment agreement, if any, with the
     Company or any subsidiary of the Company, as the same may be amended from
     time to time and in effect or, in the event that no definition is so
     provided, any of the following: (A) the Employee's continued failure,
     whether willful, intentional or negligent, to perform substantially his
     duties (other than as a result of being Disabled); (B) dishonesty or gross
     negligence in the performance of the Employee's duties; (C) an act or acts
     on the Employee's part constituting a felony under the laws of the United
     States or any state thereof; (D) any willful act

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                         ORBCOMM INC. STOCK OPTION PLAN

     or omission on the Employee's part which is materially injurious to the
     financial condition or business reputation of the Company or any of its
     subsidiaries; or (E) the Employee has breached any provision or covenant
     contained in (x) the Employee's employment agreement, (y) the Shareholders
     Agreement among the Company, the Employee, and the other signatories
     thereto, if it has been executed by the Employee or (z) any other agreement
     between the Employee and the Company.

               (iv) For purposes of this Agreement, "Disabled" means, the
     Employee is terminated due to "Disability" within the meaning of Code
     Section 22(e).

          (c) If the aggregate Fair Market Value (determined on the date the
Option is granted) of a Share subject to an Incentive Stock Option which is
exercisable for the first time during any calendar year exceeds $100,000, then
the portion of the Incentive Stock Option in excess of the $100,000 limitation
will be treated as a Non-Statutory Stock Option.

          5. Repurchase Rights.

          (a) The Company has the right to repurchase the Shares acquired upon
the exercise of Options for a period of three months after the Employee
terminates employment or three months after the Shares for which the Option is
exercised or acquired, whichever is later. The purchase price per Share payable
is as follows:

               (i) if the Employee's employment ends because the Employee was
terminated by the Company for Cause, the amount equal to the lesser of: (A) the
Fair Market value of the Shares at the time of the termination of employment;
and (B) the Exercise Price;

               (ii) if the Employee's employment ends because of a voluntary
termination by the Employee and such termination occurs prior to expiration of
the Holding Period (as defined in Section 5(b) below) for the Shares acquired
through the exercise of the exercisable portion of the Option, the amount equal
to the lesser of: (A) the Fair Market Value of the Shares at the time of the
termination of employment; and (B) the Exercise Price;

               (iii) if the Employee's employment ends because of a voluntary
termination by the Employee and such termination occurs after the expiration of
the Holding Period (as defined in Section 5(b) below) for the Shares acquired
through the exercise of the exercisable portion of the Option, the amount equal
to the greater of:

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                         ORBCOMM INC. STOCK OPTION PLAN

(A) the Fair Market Value of the Shares at the time of the termination of
employment; and (B) the Exercise Price;

               (ii) if the Employee's employment ends because the Employee
terminates for any other reason (death, termination without Cause or because the
Employee is Disabled) the amount equal to the greater of: (A) the Fair Market
Value of the Shares at the time of the termination of employment; and (B) the
Exercise Price.

          (b) For purposes of this Agreement, the Holding Period, is the third
anniversary of the earlier of: (i) the date on which such Shares acquired
through the exercise of the exercisable portion of the Option were first
exercised; and or (ii) the date on which such Shares acquired through the
exercise of the exercisable portion of the Option were first exercisable.

          6. Manner of Exercise of Option. The Option may be exercised by
delivery, via first class mail, interoffice mail, fax or electronic mail of a
Notice of Option Exercise and related forms to the Company stating the number of
Shares with respect to which the Option is being exercised and accompanied by
payment of an amount equal to the Exercise Price multiplied by the number of
Shares being purchased pursuant to the Option (the "Total Exercise Cost") in
cash or by check, bank draft or money order payable to the order of the Company
or, subsequent to an Initial Public Offering, (i) through the delivery to the
Company of Shares of Common Stock with an aggregate Fair Market Value on the
date of exercise equal to the Total Exercise Cost, subject to such limitations
and prohibitions as the Committee may adopt from time to time or (ii) through
the delivery to the Company of an Authorization for Exercise of Options
"Cashless" Exercise Form with irrevocable instructions to a broker to deliver
promptly to the Company an amount equal to the Total Exercise Cost, subject to
such limitations as the Committee may adopt from time to time or by any
combination of the above methods of payment.

          7. Non-Transferability. The right of the Employee to exercise the
Option (as and when exercisable) may not be assigned or transferred by the
Employee other than by will or the laws of descent and distribution. The Option
may be exercised and the Shares may be purchased during the lifetime of the
Employee only by the Employee (or the Employee's legal representative in the
event that the Employee's employment is terminated due to becoming "Disabled"
within the meaning of Section 4(b)(iv) of this Agreement). Any attempted
assignment or transfer, except as hereinabove provided, including without
limitation any purported assignment, whether voluntary or by operation of law,
pledge, hypothecation or other disposition contrary to the provisions hereof, or
any levy of execution, attachment, trustee process or similar process, whether
legal or equitable, upon the Option, will in each instance be null and void.

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                         ORBCOMM INC. STOCK OPTION PLAN

          8. Representation Letter and Investment Legend.

          (a) In the event that for any reason the issuance of the Shares to be
issued upon exercise of an exercisable Option will not be effectively registered
under the Securities Act of 1933, as amended (the "1933 Act"), upon any date on
which the Option is exercised, the Employee (or the person exercising the Option
pursuant to Section 6) will give a written representation to the Company in the
form attached hereto as Exhibit A, and the Company will place the legend
described in Exhibit A, upon any certificate for the Shares issued by reason of
such exercise.

          (b) The Company will be under no obligation to qualify Shares or to
cause a registration statement or a post-effective amendment to any registration
statement to be prepared for the purpose of covering the issuance of Shares.

          9. Adjustments. Subject to Section 8 of the Plan, in the event of any
change in the outstanding Shares by reason of an acquisition, spin-off or
reclassification, recapitalization or merger, combination or exchange of Shares
or other corporate exchange, Change of Control or similar event, or as required
under any Option Agreement, the Committee may adjust appropriately the number or
kind of Shares or securities subject to the Plan and available for or covered by
Grants and Share prices related to outstanding Grants and make such other
revisions to outstanding Grants as it deems are equitably required.

          10. No Special Employment Rights. Nothing contained in this Agreement
will be construed or deemed by any person under any circumstances to bind the
Company or any of its subsidiaries to continue the employment of the Employee
for the period within which this Option may vest or for any other period.

          11. Rights as a Shareholder. The Employee will have no rights as a
shareholder with respect to any Shares which may be purchased upon the vesting
of this Option unless and until a certificate or certificates representing such
Shares are duly issued and delivered to the Employee. If at any time during the
term of the Option, the Company will be advised by its counsel that the Shares
are required to be registered under the Securities Act or under applicable state
securities laws, or that delivery of the Shares must be accompanied or preceded
by a prospectus meeting the requirements of such laws, delivery of Shares by the
Company may be deferred until a registration is effective or a prospectus is
available or an appropriate exemption from registration is secured. Prior to an
Initial Public Offering, the Employee will be required to enter into a
shareholder agreement with the Company prohibiting the sale, transfer or
assignment of the Shares without first offering the Shares to the Company and/or
certain other stockholders, on a form provided by the Company, upon the exercise
of any Option under the Plan.

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                         ORBCOMM INC. STOCK OPTION PLAN

          12. Withholding Taxes. The Employee hereby agrees, as a condition to
any exercise of the Option, to provide to the Company an amount sufficient to
satisfy its obligation to withhold certain federal, state and local taxes
arising by reason of such exercise (the "Withholding Amount"), if any, by (a)
authorizing the Company to withhold the Withholding Amount from the Employee's
cash compensation, or (b) remitting the Withholding Amount to the Company in
cash; provided that, to the extent that the Withholding Amount is not provided
by one or a combination of such methods, the Company may at its election
withhold from the Shares delivered upon exercise of the Option that number of
Shares having a Fair Market Value equal to the Withholding Amount.

          13. Execution of Shareholders Agreement. The Employee acknowledges
that, in connection with his prior or future purchase of Shares of the Company,
he has previously executed and delivered that certain Shareholders Agreement,
dated the date hereof, by and among the Company and the shareholders of the
Company named therein (the "Shareholders Agreement"). The Employee further
agrees that all Shares acquired by him upon exercise of the Option will be
subject to the terms and conditions of the Shareholders Agreement, as the same
may have been amended or modified in accordance with its terms.

          14. Lock-Up Agreements. The Employee agrees that in the event of an
Initial Public Offering or any other offering of any securities of the Company,
if the Company so requests, the Employee will enter into an agreement on terms
and conditions satisfactory to the Company with the relevant underwriters of
such transaction that provides that the Employee may not directly or indirectly
offer, pledge, sell, contract to sell, sell any option or contract to purchase,
purchase any option or contract to sell, grant any option, right or warrant for
the sale of, or otherwise dispose of or transfer the Shares or any other shares
of the Company's Common Stock or securities convertible into or exchangeable or
exercisable for such shares owned by the Employee, or enter into any swap or
other arrangement that transfers, in whole or in part, the economic consequences
of ownership of any such shares, for a period of up to one year after the date
of the relevant prospectus.

          15. Delivery of Certificates. The Employee will have no interest in
the Shares unless and until certificates for the Shares are issued following
exercise of the Option.

                                    *********

                         [Signatures on Following Page]

<PAGE>

                         ORBCOMM INC. STOCK OPTION PLAN

                                OPTION AGREEMENT

                           Counterpart Signature Page

          IN WITNESS WHEREOF, the Company has caused this Agreement to be
executed, by its officer thereunto duly authorized, and the Employee has
executed this Agreement, all as of the day and year first above written.

ORBCOMM INC.                            EMPLOYEE

By:
    ---------------------------------   ----------------------------------------
Title:
       ------------------------------   Address:
                                                 -------------------------------

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

-------------------------------------
(print name)

                                        Facsimile Number:
                                                          ----------------------

                                        ----------------------------------------
                                        Social Security Number

                                        Email Address:
                                                       -------------------------

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