Document:

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                                                                   EXHIBIT 10.11

                FORM OF SERIES A PREFERRED STOCK PURCHASE WARRANT

NEITHER THIS WARRANT NOR THE SHARES OF SERIES A PREFERRED STOCK ISSUABLE UPON
EXERCISE HEREOF HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT") OR ANY OTHER APPLICABLE SECURITIES LAWS IN
RELIANCE UPON AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND SUCH OTHER SECURITIES LAWS. NEITHER THIS WARRANT NOR THE SHARES OF
SERIES A PREFERRED STOCK ISSUABLE UPON EXERCISE HEREOF MAY BE SOLD, PLEDGED,
TRANSFERRED, ENCUMBERED OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR IN A TRANSACTION WHICH IS
EXEMPT FROM REGISTRATION UNDER THE PROVISIONS OF THE SECURITIES ACT.

                                     No. [ ]

                    SERIES A PREFERRED STOCK PURCHASE WARRANT

       To Purchase [ ] shares of Series A Preferred Stock of ORBCOMM Inc.

     THIS CERTIFIES that, for value received, [______________] (the "Holder"),
is entitled, upon the terms and subject to the conditions hereinafter set forth,
at any time on or after the date hereof (the "Initial Exercise Date") and until
the close of business on [insert Terminate Date] (the "Termination Date") but
not thereafter, to subscribe for and purchase from ORBCOMM Inc., a Delaware
corporation (the "Company"), [______________________] (the "Warrant Shares") of
the Series A preferred stock of the Company, par value $.001 per share (the
"Shares"). The purchase price of the Warrant Shares (the "Exercise Price") under
this Warrant shall be $2.84 per Share. The number of Shares for which the
Warrant is exercisable shall be subject to adjustment as provided herein.

          1. Authorization of Shares. The Company covenants that all Shares
which may be issued upon the exercise of rights represented by this Warrant
will, upon exercise of the rights represented by this Warrant, be duly
authorized, validly issued, fully paid and nonassessable and free from all
taxes, liens and charges in respect of the issue thereof (other than taxes in
respect of any transfer occurring contemporaneously with such issue).

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          2. Exercise of Warrant. (a) Except as provided in Section 4 herein,
exercise of the purchase rights represented by this Warrant may be made in whole
(or in part) at any time on or after the Initial Exercise Date, and before the
close of business on the Termination Date, by (i) the surrender of this Warrant,
(ii) delivery of a duly Executed Notice of Exercise Form, in the form annexed
hereto and (iii) delivery of a duly executed counterpart signature page to the
(A) Registration Rights Agreement, dated the date hereof (the "Registration
Rights Agreement"), between the Company and certain Holders (as defined
therein), (B) Stockholders Agreement, dated the date hereof (the "Stockholders
Agreement"), between the Company and certain Preferred Stockholders (as defined
therein) and Common Stockholders (as defined therein) and (C) Common Stock
Voting Agreement, dated the date hereof (the "Common Stock Voting Agreement"),
between the Company and certain Investors (as defined therein), in each case, at
the office of the Company (or such other office or agency of the Company as it
may designate by notice in writing to the registered Holder hereof at the
address of such holder appearing on the books of the Company). Thereafter upon
payment of the Exercise Price of the Warrant Shares thereby purchased by wire
transfer of immediately available funds to an account designated by the Company
or delivery of a cashier's check drawn on a United States bank, the Holder shall
be entitled to receive a certificate for the number of Shares so purchased. A
certificate for Shares purchased hereunder shall be delivered to the Holder
hereof within five (5) business days after the date on which this Warrant shall
have been exercised and paid as aforesaid. Notwithstanding anything herein to
the contrary, Holder agrees following exercise of this Warrant to do or have
done such acts and things as the Company may reasonably request in order to
admit Holder as a member of the Company.

               (b) In lieu of exercising this Warrant as specified in Section
2(a), the Holder may from time to time convert this Warrant, in whole or in
part, into a number of Shares determined by dividing (i) the aggregate fair
market value of the Shares or other securities otherwise issuable upon exercise
of this Warrant minus the aggregate Exercise Price of such Shares by (ii) the
fair market value of one Share. The fair market value of a Share shall be
determined pursuant to Section 2(c).

               (c) The Board of Directors of the Company shall determine fair
market value of a Share in its reasonable good faith judgment.

          3. No Fractional Shares. No fractional Shares shall be issued upon the
exercise of this Warrant. As to any fraction of a Share which a Holder would
otherwise be entitled to purchase upon such exercise, the Company shall pay a
cash adjustment in respect of such final fraction in an amount determined on the
basis the Exercise Price.

          4. Charges, Taxes and Expenses. Issuance of certificates for Shares
upon the exercise of this Warrant shall be made without charge to the Holder
hereof for

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any issue or federal or state transfer tax or other incidental expense in
respect of the issuance of such certificate, all of which taxes and expenses
shall be paid by the Company, and such certificates shall be issued in the name
of the holder of this Warrant or in such name or names as may be directed in
writing by the holder of this Warrant.

          5. Closing of Books. The Company will not close its Share holder books
or records in any manner which prevents the timely exercise of this Warrant.

          6. Transfer.

               (a) The Holder (and its transferees and assigns), by acceptance
of this Warrant, covenants and agrees that it is acquiring the Warrants
evidenced hereby, and, upon exercise hereof, the Warrant Shares, for its own
account as an investment and not with a view to distribution thereof. The
Warrant Shares have not been registered under the Securities Act or any state
securities laws and no transfer of any Warrant Shares shall be permitted unless
the Company has received notice of such transfer, at the address of its
principal office, in the form of an assignment reasonably satisfactory to the
Company, accompanied by an opinion of counsel reasonably satisfactory to the
Company that an exemption from registration of such Warrants or Warrant Shares
under the Securities Act is available for such transfer. Upon any exercise of
the Warrants, certificates representing the Warrant Shares shall bear a
restrictive legend substantially identical to that set forth on the face of this
Warrant certificate.

               (b) The Holder agrees that this Warrant may not be transferred to
any person or entity other than an Affiliate. For purposes of this Warrant the
term "Affiliate" shall have the meaning ascribed thereto under the United States
Securities Act of 1933, as amended, and, in addition, shall include (i)
transferees by will or the laws of descent and distribution, (ii) shareholders,
partners or members of the Holder (and other entities controlled by such
shareholders, partners or members) and (iii) a trust that benefits the Holder
and/or his spouse (including widow), issue or a charity.

               (c) This Warrant may not be divided or combined with other
warrants.

               (d) The Company agrees to maintain, at its aforesaid office,
books for the registration and the registration of transfer of the Warrants.

          7. No Rights as Shareholder until Exercise. This Warrant does not
entitle the Holder hereof to any voting rights or other rights as a Shareholder
of the Company prior to the exercise hereof. Upon the surrender of this Warrant
and the payment of the aggregate Exercise Price, and the execution and delivery
by the Holder of the duly executed counterpart signature pages to the (i)
Registration Rights Agreement, (ii) Stockholders Agreement and (iii) Common
Stock Voting Agreement, the Warrant

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Shares so purchased shall be and be deemed to be issued to the Holder as the
record owner of such Shares as of the close of business on the later of the date
of such surrender or payment.

          8. Loss, Theft, Destruction or Mutilation of Warrant. The Company
covenants that upon receipt by the Company of evidence reasonably satisfactory
to it of the loss, theft, destruction or mutilation of this Warrant certificate
or any certificate relating to the Warrant Shares, and in case of loss, theft or
destruction, of indemnity or security reasonably satisfactory to it (which shall
not exceed that customarily charged by the Company's transfer agent) and upon
surrender and cancellation of such Warrant or certificate, if mutilated, the
Company will make and deliver a new Warrant or certificate of like tenor and
dated as of such cancellation, in lieu of such Warrant or certificate.

          9. Saturdays, Sundays, Holidays, etc. If the last or appointed day for
the taking of any action or the expiration of any right required or granted
herein shall be a Saturday, Sunday or a legal holiday, then such action may be
taken or such right may be exercised on the next succeeding day not a Saturday,
Sunday or legal holiday.

          10. Adjustments of Exercise Price and Number of Warrant Shares.

               (a) Stock Splits, etc. Notwithstanding anything herein to the
contrary, the number of Warrant Shares shall be adjusted ratably for changes in
the capitalization of the Company as follows:

               (i) in the event of subdivisions, combinations or
     reclassifications of the Company capital into a greater or lesser number of
     Shares, as the case may be, or into different classes, the number of
     Warrant Shares shall be adjusted ratably in the same proportion as the
     Company capital is subdivided, combined or reclassified, and the Exercise
     Price (x) shall be proportionately increased in case of any combination or
     reclassification into a lesser number of Shares or (y) shall be
     proportionately decreased in case of any subdivision or reclassification
     into a greater number of Shares;

               (ii) in the event of a distribution of Shares by the Company, the
     number of Warrant Shares shall be increased by the number of Shares Holder
     would have received had the Warrant be exercised immediately prior to such
     distribution of Shares and the Exercise Price shall be proportionately
     decreased.

               (b) Dilutive Issuances. If the Company shall prior to the
Termination Date sell, issue or distribute (including by way of dividend) Shares
or securities convertible or exchangeable into Shares, including options,
preemptive rights and warrants, at a price per Share (determined in the case of
securities convertible or exchangeable into Shares, by dividing (i) the total
amount received or receivable by the

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Company in consideration for the sale and issuance of such securities plus the
consideration payable to the Company upon the conversion or exchange of such
securities by (ii) the total number of Shares covered by such convertible or
exchangeable securities), which is less than $2.84 (or, in the event of a prior
adjustment in the number of Warrant Shares, the then current Exercise Price),
then the number of Warrant Shares shall be increased to equal the product of (i)
the number of Warrant Shares issuable immediately prior to such dilutive
issuance times (ii) the quotient of the then current Exercise Price divided by
the lowest price per Shares at which Shares were so sold, issued or distributed,
and the Exercise Price shall thereafter be reduced to such lowest price per
Share.

               (c) Merger, Consolidation or Disposition of Assets. In case the
Company shall consolidate or merge with or into another corporation or other
entity (where the Company is not the surviving entity or where there is a change
in or distribution with respect to the Shares of the Company), or convert into
another entity or sell, transfer or otherwise dispose of all or substantially
all its property, assets or business to another corporation or other entity and,
pursuant to the terms of such merger, consolidation, conversion or disposition
of assets, equity securities of the successor or acquiring corporation or other
entity, or any cash, shares of stock or other securities or property of any
nature whatsoever (including warrants or other subscription or purchase rights)
in addition to or in lieu of equity securities of the successor or acquiring
entity ("Other Property"), are to be received by or distributed to the holders
of Shares of the Company, then the Holder shall have the right thereafter to
receive, upon exercise of this Warrant, the number of Shares of the equity
securities of the successor or acquiring entity or of the Company, if it is the
surviving entity, and Other Property receivable upon or as a result of such
merger, consolidation, conversion or disposition of assets by a holder of the
number of Shares for which this Warrant is exercisable immediately prior to such
event. In case of any such merger, consolidation, conversion or disposition of
assets, the successor or acquiring corporation or other entity (if other than
the Company) shall expressly assume the due and punctual observance and
performance of each and every covenant and condition of this Warrant to be
performed and observed by the Company and all the obligations and liabilities
hereunder, subject to such modifications as may be deemed appropriate (as
determined in good faith by resolution of the Board of Directors of the Company)
in order to provide for adjustments of Shares for which this Warrant is
exercisable which shall be as nearly equivalent as practicable to the
adjustments provided for in this Section 10. For purposes of this Section 10,
"equity securities of the successor or acquiring corporation or other entity"
shall include stock or other common equity interests of such company of any
class which is not preferred as to dividends or assets over any other class of
stock of such company and which is not subject to redemption and shall also
include any evidences of indebtedness, shares of stock or other securities which
are convertible into or exchangeable for any such security, either immediately
or upon the arrival of a specified date or the happening of a specified event
and any warrants or other

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rights to subscribe for or purchase any such security. The foregoing provisions
of this Section 10 shall similarly apply to successive mergers, consolidations,
conversions or dispositions of assets.

          11. Voluntary Adjustment by the Company. The Company may at any time
during the term of this Warrant, reduce the then current Exercise Price to any
amount and for any period of time deemed appropriate by the Board of Directors
of the Company.

          12. Notice of Adjustment. Whenever the number of Warrant Shares or
number or kind of securities or other property purchasable upon the exercise of
this Warrant or the Exercise Price is adjusted, as herein provided, the Company
shall promptly mail by registered or certified mail, return receipt requested,
or express courier to the holder of this Warrant notice of such adjustment or
adjustments setting forth the number of Warrant Shares (and other securities or
property) purchasable upon the exercise of this Warrant and the Exercise Price
of such Warrant Shares (and other securities or property) after such adjustment,
setting forth a brief statement of the facts requiring such adjustment and
setting forth the computation by which such adjustment was made. Such notice, in
the absence of manifest error, shall be conclusive evidence of the correctness
of such adjustment.

          13. Notice of Corporate Action. If at any time:

               (a) there shall be any capital reorganization of the Company, any
reclassification or recapitalization of the capital of the Company or any
consolidation or merger of the Company with, or any sale, transfer or other
disposition of all or substantially all the property, assets or business of the
Company to, another corporation, or

               (b) there shall be a voluntary or involuntary dissolution,
liquidation or winding up of the Company;

then, in any one or more of such cases, the Company shall give to the Holder (i)
at least 10 days prior written notice of the record date for such
reorganization, reclassification, merger, consolidation, sale, transfer,
disposition, liquidation or winding up, and (ii) in the case of any such
reorganization, reclassification, merger, consolidation, sale, transfer,
disposition, dissolution, liquidation or winding up, at least 10 days prior
written notice of the date when the same shall take place. Such notice in
accordance with the foregoing clause also shall specify (i) the date on which
any such record is to be taken for the purpose of such dividend, distribution or
right, the date on which the holders of Shares shall be entitled to any such
dividend, distribution or right, and the amount and character thereof, and (ii)
the date on which any such reorganization, reclassification, merger,
consolidation, sale, transfer, disposition, dissolution, liquidation or winding
up is to take

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place and the time, if any such time is to be fixed, as of which the holders of
Shares shall be entitled to exchange their Shares for securities or other
property deliverable upon such disposition, dissolution, liquidation or winding
up. Each such written notice shall be sufficiently given if addressed to Holder
at the last address of Holder appearing on the books of the Company and
delivered in accordance with Section 14(c).

          14. Miscellaneous.

               (a) Jurisdiction. This Warrant shall be binding upon any
successors or assigns of the Company. This Warrant shall constitute a contract
under the laws of Delaware without regard to its conflict of law principles or
rules.

               (b) Restrictions. The Holder hereof acknowledges that the Warrant
Shares acquired upon the exercise of this Warrant, if not registered, will have
restrictions upon resale imposed by state and federal securities laws.

               (c) Notices. Any notice, request, consent, waiver or other
communication required or permitted hereunder shall be effective only if it is
in writing and personally delivered or sent by Federal Express or similar
internationally recognized express courier service or sent by fax and addressed
as set forth below:

               IF TO THE HOLDER:
               [__________________________________]
               [__________________________________]
               [__________________________________]
               Fax: [_____________________________]
               Attention:

               IF THE COMPANY:
               ORBCOMM Inc.
               21700 Atlantic Blvd.
               Dulles, VA 20166
               Fax: (703) 433-6400
               Attention: Don Franco, Co-Chief Executive Officer

               WITH A COPY TO:
               Chadbourne & Parke LLP
               30 Rockefeller Plaza
               New York, New York 10112
               Fax: (212) 541-5369
               Attention: Alejandro San Miguel, Esq.

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or such other person or address as the addressee may have specified in a notice
duly given to the sender as provided herein. Such notice or communication shall
be deemed to have been given as of the date so personally delivered or mailed.

               (d) Successors and Assigns. Subject to applicable securities
laws, this Warrant and the rights and obligations evidenced hereby shall inure
to the benefit of and be binding upon the successors of the Company and the
successors and permitted assigns of Holder. The provisions of this Warrant are
intended to be for the benefit of all holders from time to time of this Warrant
and shall be enforceable by any such holder or holder of Warrant Shares.

               (e) Amendment. This Warrant may be modified or amended or the
provisions hereof waived with the written consent of the Company and the Holder.

               (f) Severability. Wherever possible, each provision of this
Warrant shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Warrant shall be prohibited by or
invalid under applicable law, such provision shall be ineffective to the extent
of such prohibition or invalidity, without invalidating the remainder of such
provisions or the remaining provisions of this Warrant.

               (g) Headings. The headings used in this Warrant are for the
convenience of reference only and shall not, for any purpose, be deemed a part
of this Warrant.

          IN WITNESS WHEREOF, the Company has caused this Warrant to be executed
by its officer thereunto duly authorized.

Dated: February [ ], 2004

                                        ORBCOMM Inc.

                                        By:
                                            ------------------------------------
                                        Name: Don Franco
                                        Title: Co-Chief Executive Officer

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                               NOTICE OF EXERCISE

To: ORBCOMM Inc.
    21700 Atlantic Blvd.
    Dulles, VA 20166

          (1) The undersigned hereby elects to purchase [_________] Shares of
the Series A Preferred Stock of ORBCOMM Inc. pursuant to the terms of the
attached Warrant, and tenders herewith payment of the exercise price in full,
together with all applicable transfer taxes, if any.

          (2) Please issue a certificate or certificates representing said
Shares in the name of the undersigned or in such other name as is specified
below:

-------------------------------------
(Name)

-------------------------------------
(Address)

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

Dated:

                                        ----------------------------------------
                                        Signature<PAGE>

                                                                   EXHIBIT 10.12

THIS WARRANT AND THE SECURITIES ISSUABLE UPON THE EXERCISE HEREOF HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), AND MAY NOT
BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED IN THE
ABSENCE OF A REGISTRATION STATEMENT IN EFFECT WITH RESPECT TO SUCH WARRANT OR
SECURITIES, OR DELIVERY OF AN OPINION OF COUNSEL IN FORM AND SUBSTANCE
REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH OFFER, SALE OR TRANSFER, PLEDGE
OR HYPOTHECATION IS IN COMPLIANCE WITH THE ACT OR UNLESS SOLD IN FULL COMPLIANCE
WITH RULE 144 UNDER THE ACT.

No. [__]

                                  ORBCOMM INC.

                               SERIES A PREFERRED
                             STOCK PURCHASE WARRANT

February 17, 2004

     THIS CERTIFIES THAT, for value received, Ridgewood Satellite, LLC, a
Delaware limited liability company ("Warrantholder"), is entitled to subscribe
for and purchase from ORBCOMM Inc., a Delaware corporation (the "Company"),
subject to the terms set forth below, Series A Convertible Redeemable Preferred
Stock of the Company, par value $0.001 per share ("Warrant Shares"), upon
surrender hereof, at the principal office of the Company referred to below, with
the Notice of Exercise attached as Exhibit A hereto duly executed, and payment
therefor in lawful money of the United States. The number and warrant price of
such Warrant Shares are as set forth in Section 2 hereof. The term "Warrant" as
used herein shall include this Warrant and any warrants delivered in
substitution or exchange therefor as provided herein.

     1. Term. Subject to the terms hereof, the purchase right represented by
this Warrant is exercisable, in whole or in part, at any time and from time to
time until November 5, 2008.

     2. Number and Warrant Price.

          (a) This Warrant shall be exercisable for the number of Warrant Shares
set forth in subparagraph (b) below at an exercise price per share equal to
$2.84 per Warrant Share (the "Warrant Price").

          (b) This Warrant shall be exercisable for [__] shares of Series A
Convertible Redeemable Preferred Stock of the Company, par value $0.001 per
share.

     3. Method of Exercise; Payment; Issuance of New Warrant. The purchase right
represented by this Warrant may be exercised by the holder hereof, in whole or
in part and from time to time, by the surrender of this Warrant (together with a
duly executed notice of exercise, in the form attached hereto as Exhibit A) at
the principal office of the Company and by the payment to the Company, by check
or wire transfer of immediately available funds, of an

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ORBCOMM Series A Warrant

amount equal to the Warrant Price per share multiplied by the number of Warrant
Shares then being purchased. The person or persons in whose name(s) any
certificate(s) representing Warrant Shares shall be issuable upon exercise of
this Warrant shall be deemed to have become the holder(s) of record of, and
shall be treated for all purposes as the record holder(s) of, the shares
represented thereby (and such shares shall be deemed to have been issued)
immediately prior to the close of business on the date or dates upon which this
Warrant is exercised. In the event of any exercise of the rights represented by
this Warrant, certificates for the shares of stock so purchased shall be
delivered to the holder hereof as soon as possible and in any event within 15
days of receipt of such notice and, unless this Warrant has been fully exercised
or expired, a new Warrant representing the portion of the Warrant Shares, if
any, with respect to which this Warrant shall not then have been exercised shall
also be issued to the holder hereof as soon as possible and in any event within
such 15-day period.

     The aggregate purchase price for Warrant Shares being purchased hereunder
may be paid either (i) by cash or wire transfer of immediately available funds,
or (ii) by surrender of a number of Warrant Shares which have a fair market
value equal to the aggregate purchase price of the Warrant Shares being
purchased ("Net Issuance") as determined herein. If the Holder elects the Net
Issuance method of payment, the Company shall issue to Holder upon exercise a
number of shares of Warrant Shares determined in accordance with the following
formula:

                                      Y x (A-B)
                                  X = ---------
                                          A

     where: X = the number of Warrant Shares to be issued to the Holder;

            Y = the number of Warrant Shares with respect to which the Holder is
                exercising its purchase rights under this Warrant;

            A = the fair market value of one (1) share of the Warrant Shares on
                the date of exercise; and

            B = the Warrant Price.

     No fractional shares arising out of the above formula for determining the
number of shares to be issued to the Holder shall be issued, and the Company
shall in lieu thereof make payment to the Holder of cash in the amount of such
fraction multiplied by the fair market value of one (1) share of the Warrant
Shares on the date of exercise. For purposes of the above calculation, the fair
market value of one (1) share of the Warrant Shares shall mean (a) if the date
of exercise is after the commencement of trading of the Company's Common Stock
on a securities exchange or over-the-counter but prior to the closing of the
IPO, the price per share to the public set forth on the final prospectus
relating to the IPO, multiplied by the number of shares of Common Stock into
which each share of the Warrant Shares is then convertible, (b) if the Company's
Common Stock is then traded on a securities exchange, the average of the

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closing prices of such Common Stock on such exchange over the thirty (30)
calendar day period (or portion thereof) ending three (3) days prior to the date
of exercise, multiplied by the number of shares of Common Stock into which each
share of the Warrant Shares is then convertible, (c) if the Company's Common
Stock is then regularly traded over-the-counter, the average of the closing sale
prices or secondarily the closing bid of such Common Stock over the thirty (30)
calendar day period (or portion thereof) ending three (3) days prior to the date
of exercise, multiplied by the number of shares of Common Stock into which each
share of the Warrant Shares is then convertible, or (d) if there is no active
public market for the Company's Common Stock, the fair market value thereof as
determined in good faith by the Company's Board of Directors (or similar
governing body), multiplied by the number of shares of Common Stock into which
each share of the Warrant Shares is then convertible.

     4. Stock Fully Paid; Reservation of Shares. All Warrant Shares that may be
issued upon the exercise of the rights represented by this Warrant will, upon
issuance, be fully paid and nonassessable, and free from all taxes, liens and
charges with respect to the issue thereof. During the period within which the
rights represented by the Warrant may be exercised, the Company will at all
times have authorized and reserved for the purpose of issuance upon exercise of
the purchase rights evidenced by this Warrant, a sufficient number of shares of
its Warrant Shares and Common Stock to provide for the exercise of the rights
represented by this Warrant.

     5. Adjustment of Warrant Price and Number of Shares. The number and kind of
securities purchasable upon the exercise of the Warrant and the Warrant Price
shall be subject to adjustment from time to time upon the occurrence of certain
events, as follows:

          (a) In case of (i) any reclassification of or similar change in the
Warrant Shares; (ii) any merger of the Company with or into another entity
(other than a merger with another entity in which the Company is the continuing
entity and which does not result in any reclassification of or similar change in
the Warrant Shares); or (iii) any sale of all or substantially all of the assets
of the Company, the Company or such successor or purchasing entity, as the case
may be, shall execute a new Warrant having substantially similar terms and
providing that the holder of this Warrant shall have the right to exercise such
new Warrant for the kind and number of shares of stock, membership interests,
other securities, money or property receivable upon such reclassification,
change, merger or sale by a holder of shares of Warrant Shares.

          (b) In case of (i) any subdivision or combination of the Warrant
Shares or (ii) at any time or from time to time after the issuance date of this
Warrant, any declaration or payment, without consideration, of any dividend on
the Warrant Shares payable in shares of the Company's capital stock or in any
right to acquire shares of the Company's capital stock without consideration,
the number of shares of Warrant Shares or other security issuable upon exercise
hereof shall be proportionately increased or decreased, as appropriate.

          (c) The Company will not, by amendment of its Certificate of
Incorporation or through any reorganization, recapitalization, transfer of
assets, consolidation, merger, dissolution, issuance or sale of securities or
any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms to be observed or performed hereunder by the Company, but
will at all times in good faith assist in the carrying out of all the provisions
of this Paragraph 5 and in the taking of all such actions as may be necessary or
appropriate in order to protect the rights of the holder of this Warrant against
impairment.

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     6. Notice of Adjustments. Whenever the Warrant Price shall be adjusted
pursuant to the provisions hereof, the Company shall within 30 days of such
adjustment deliver a certificate signed by its chief financial officer to the
holder(s) hereof setting forth, in reasonable detail, the event requiring the
adjustment, the amount of the adjustment, the method by which such adjustment
was calculated, and the Warrant Price after giving effect to such adjustment.

     7. Fractional Shares. No fractional shares of Warrant Shares will be issued
in connection with any exercise hereunder, but in lieu of such fractional shares
the Company shall make a cash payment therefor upon the basis of the Warrant
Price then in effect.

     8. Transfers and Exchanges. This Warrant shall not be transferable, except
to affiliates of the Holder.

     9. Rights as Stockholder. No holder of this Warrant, as such, shall be
entitled to vote or receive dividends or be deemed the holder of Warrant Shares,
nor shall anything contained herein be construed to confer upon the holder of
this Warrant, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to receive notice of meetings, or to
receive dividends or subscription rights or otherwise until this Warrant shall
have been exercised and the Warrant Shares shall have become deliverable, as
provided herein, and at such time the holders of such shares shall have the same
rights, preferences and privileges, as provided in the Company's charter
documents, including any anti-dilution protection, as all other holders of the
Warrant Shares. In addition, Warrant Shares shall have registration rights
equivalent to the registration rights granted to the Company's Series A
Preferred Stock pursuant to the Company's Registration Rights Agreement, dated
as of February 17, 2004, and the holder of this Warrant will be deemed to be a
holder of Registrable Securities thereunder upon exercise of this Warrant.

     10. Modification and Waiver. This Warrant and any provision hereof may be
amended, waived, discharged or terminated only with the written consent of the
Company and the holder hereof.

     11. Notices. Any notice, request or other document required or permitted to
be given or delivered to the holder hereof or the Company shall be delivered, or
shall be sent by certified or registered mail, postage prepaid, to the holder at
its address as shown on the books of the Company or to the Company at its
principal office at 21700 Atlantic Blvd., Dulles, VA 20166, Attention: Chief
Executive Officer.

     12. Binding Effect on Successors. This Warrant shall be binding upon any
entity succeeding the Company by merger, consolidation or acquisition of all or
substantially all of the Company's assets, and all of the obligations of the
Company relating to the Warrant Shares shall survive the exercise and
termination of this Warrant and all of the covenants and agreements of the
Company shall inure to the benefit of the successors and assigns of the holder
hereof. The Company will, at the time of the exercise of this Warrant, in whole
or in part, upon request of the holder hereof but at the Company's expense,
acknowledge in writing its continuing obligation to the holder hereof in respect
of any rights to which the holder hereof shall continue to be entitled after
such exercise in accordance with this Warrant; provided, that the failure of the
holder

                                       4

<PAGE>

hereof to make any such request shall not affect the continuing obligation of
the Company to the holder hereof in respect of such rights.

     13. Lost Warrants or Stock Certificates. The Company covenants to the
holder hereof that upon receipt of evidence reasonably satisfactory to the
Company of the loss, theft, destruction, or mutilation of this Warrant or any
certificate (stock or otherwise) and, in the case of any such loss, theft or
destruction, upon receipt of an indemnity reasonably satisfactory to the
Company, or in the case of any such mutilation upon surrender and cancellation
of such Warrant or certificate, the Company will make and deliver a new Warrant
or certificate, of like tenor, in lieu of the lost, stolen, destroyed or
mutilated Warrant or certificate.

     14. Governing Law. This Warrant shall be construed and enforced in
accordance with, and the rights of the parties shall be governed by, the laws of
the State of Delaware.

     15. Counterparts. This Warrant may be executed in one or more counterparts,
each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument.

     IN WITNESS WHEREOF, this Series A Preferred Stock Purchase Warrant is
executed effective as of the date first above written.

                                        ORBCOMM INC.

                                        By:
                                            ------------------------------------
                                            Don Franco
                                            Co-Chief Executive Officer

ACCEPTED AND AGREED:

Ridgewood Satellite, LLC

By: [_______________________________]

By:
    ---------------------------------
    [name, title]

   [Signature page to ORBCOMM Inc. Series A Preferred Stock Purchase Warrant]

                                       5

<PAGE>

                                    EXHIBIT A

                               NOTICE OF EXERCISE

To: ORBCOMM Inc.
    21700 Atlantic Boulevard
    Dulles, VA 20166
    Attn: ___________________

     1. The undersigned hereby elects to [cross out inapplicable subparagraph]:

     (a)  Purchase ________ shares of Warrant Shares of ORBCOMM Inc. pursuant to
          the terms of the attached Warrant, and tenders herewith payment of the
          purchase price of such shares in full;

     OR

     (b)  Exercise the attached Warrant for [all of the shares] [_________
          shares] [cross out inapplicable phrase] of Warrant Shares of ORBCOMM
          Inc. purchasable under the attached Warrant pursuant to the net
          exercise provision of paragraph 3 of the attached Warrant.

     2. Please issue a certificate or certificates representing said shares in
the name of the undersigned or in such other name or names as are specified
below

          Name:

          Address:

     3. The undersigned represents that the aforesaid shares are being acquired
for the account of the undersigned for investment and not with a view to, or for
resale in connection with, the distribution thereof and that the undersigned has
no present intention of distributing or reselling such shares.

                                        ------------------------------
                                        (Signature)

                                       6

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