Document:

<PAGE>
                                                                    Exhibit 4.1

            SEE REVERSE FOR LEGEND RELATING TO TRANSFER RESTRICTIONS

          NUMBER                                         SHARES
AA
    CLASS A COMMON STOCK                            CUSIP 039392 70 9

      PAR VALUE $.0001                  SEE REVERSE SIDE FOR CERTAIN DEFINITIONS

                                                    AND OTHER LEGENDS

                               ARCH WIRELESS, INC.

              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

 THIS CERTIFICATE IS TRANSFERABLE IN CANTON, MA, JERSEY CITY, NJ OR NEW YORK, NY

THIS CERTIFIES THAT

IS THE OWNER OF

       FULLY PAID AND NON-ASSESSABLE SHARES OF THE CLASS A COMMON STOCK OF

ARCH WIRELESS, INC. (hereinafter referred to as the "Corporation") transferable
on the books of the Corporation by the holder hereof in person or by duly
authorized attorney, upon surrender of this Certificate properly endorsed. This
Certificate and the shares represented hereby are subject to the laws of the
State of Delaware and to the Restated Certificate of Incorporation and Bylaws of
the Corporation, as amended from time to time (copies of which are on file with
the Corporation). This Certificate is not valid until countersigned and
registered by the Transfer Agent and Registrar.

     WITNESS the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

Dated:

/s/ Gerald J. Cimmino                       /s/ C. Edward Baker, Jr.

Vice President and Treasurer                Chairman and Chief Executive Officer

COUNTERSIGNED AND REGISTERED:

         EQUISERVE TRUST COMPANY, N.A.

                  TRANSFER AGENT AND REGISTRAR,

BY

AUTHORIZED SIGNATURE.

<PAGE>

                               ARCH WIRELESS, INC.

THE CORPORATION HAS MORE THAN ONE CLASS OF STOCK AUTHORIZED TO BE ISSUED. THE
CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER UPON WRITTEN REQUEST
A COPY OF THE FULL TEXT OF THE PREFERENCES, VOTING POWERS, QUALIFICATION AND
SPECIAL AND RELATIVE RIGHTS OF THE SHARES OF EACH CLASS OF STOCK (AND ANY SERIES
THEREOF) AUTHORIZED TO BE ISSUED BY THE CORPORATION AS SET FORTH IN THE RESTATED
CERTIFICATE OF INCORPORATION OF THE CORPORATION AND AMENDMENTS THERETO FILED
WITH THE SECRETARY OF THE STATE OF DELAWARE.

THE SALE, TRANSFER OR ASSIGNMENT OF THE SHARES OF STOCK REPRESENTED BY THIS
CERTIFICATE ARE SUBJECT TO THE TERMS AND CONDITIONS OF THE CORPORATION'S
RESTATED CERTIFICATE OF INCORPORATION AND AMENDMENTS THERETO FILED WITH THE
SECRETARY OF THE STATE OF DELAWARE. THE CORPORATION WILL FURNISH WITHOUT CHARGE
TO EACH STOCKHOLDER UPON WRITTEN REQUEST A COPY OF THE RESTATED CERTIFICATE OF
INCORPORATION OF THE CORPORATION AND AMENDMENTS THERETO FILED WITH THE SECRETARY
OF THE STATE OF DELAWARE.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

TEN COM  - as tenants in common         UNIF GIFT MIN ACT - _____Custodian _____
TEN ENT  - as tenants by the entireties                     (Cust)       (Minor)
JT TEN   - as joint tenants with right             under Uniform Gifts to Minors
         of survivorship and not as                Act ___________________
         tenants in common                                   (State)

     Additional abbreviations may also be used though not in the above list.

For value received, _______________ hereby sell, assign, and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE
[                                 ]

PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE

_________________________ Shares of the Class A Common Stock represented by the
within Certificate, and do hereby irrevocably constitute and appoint
_____________ Attorney to transfer the said stock on the books of the
within-named Corporation, with full power of substitution in the premises.

Dated, ______________     ___________________________________
                          (The signature to this assignment must correspond with
                          the name as written upon the face of this Certificate
                          in every particular, without alteration or enlargement
                          or any change whatever.)

Signature(s) Guaranteed:_____________________________
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE
17Ad-15.<PAGE>
                                                                    EXHIBIT 10.1

                               ARCH WIRELESS, INC.

                            2002 STOCK INCENTIVE PLAN

1.       Purpose

         The purpose of this 2002 Stock Incentive Plan (the "Plan") of Arch
Wireless, Inc., a Delaware corporation (the "Company"), is to advance the
interests of the Company's stockholders by enhancing the Company's ability to
attract, retain and motivate persons who make (or are expected to make)
important contributions to the Company by providing such persons with equity
ownership opportunities and performance-based incentives and thereby better
aligning the interests of such persons with those of the Company's stockholders.
Except where the context otherwise requires, the term "Company" shall include
any of the Company's present or future parent or subsidiary corporations as
defined in Sections 424(e) or (f) of the Internal Revenue Code of 1986, as
amended, and any regulations promulgated thereunder (the "Code") and any other
business venture (including, without limitation, joint venture or limited
liability company) in which the Company has a controlling interest, as
determined by the Board of Directors of the Company (the "Board").

2.       Eligibility

         All of the Company's employees, officers, directors, consultants and
advisors (and any individuals who have accepted an offer for employment) are
eligible to be granted options, restricted stock awards or other stock based
awards (each, an "Award") under the Plan. Each person who has been granted an
Award under the Plan shall be deemed a "Participant".

3.       Administration and Delegation

         (a) Administration by Board of Directors. The Plan will be administered
by the Board. The Board shall have authority to grant Awards and to adopt, amend
and repeal such administrative rules, guidelines and practices relating to the
Plan as it shall deem advisable. The Board may correct any defect, supply any
omission or reconcile any inconsistency in the Plan or any Award in the manner
and to the extent it shall deem expedient to carry the Plan into effect and it
shall be the sole and final judge of such expediency. All decisions by the Board
shall be made in the Board's sole discretion and shall be final and binding on
all persons having or claiming any interest in the Plan or in any Award. No
director or person acting pursuant to the authority delegated by the Board shall
be liable for any action or determination relating to or under the Plan made in
good faith.

         (b) Appointment of Committees. To the extent permitted by applicable
law, the Board may delegate any or all of its powers under the Plan to one or
more committees or subcommittees of the Board (a "Committee"). All references in
the Plan to the "Board" shall mean the Board or a Committee of the Board to the
extent that the Board's powers or authority under the Plan have been delegated
to such Committee.

                                       1
<PAGE>

4.       Stock Available for Awards

         (a) Number of Shares. Subject to adjustment under Section 8, Awards may
be made under the Plan for up to 950,000 shares of common stock, $.001 par value
per share, of the Company (the "Common Stock"). If any Option (as hereinafter
defined) expires or is terminated, surrendered or canceled without having been
fully exercised or is forfeited in whole or in part or results in any Common
Stock not being issued, the unused Common Stock covered by such Option shall
again be available for the grant of Awards under the Plan, subject, however, in
the case of Incentive Stock Options (as hereinafter defined), to any limitations
under the Code. Shares issued under the Plan may consist in whole or in part of
authorized but unissued shares or treasury shares.

         (b) Per-Participant Limit. Subject to adjustment under Section 8, the
maximum number of shares of Common Stock with respect to which Awards may be
granted to any Participant under the Plan shall be 400,000 per calendar year.
The per-Participant limit described in this Section 4(b) shall be construed and
applied consistently with Section 162(m) of the Code ("Section 162(m)").

         (c) Issuance of Shares. The 950,000 shares of Common Stock available
for issuance under the Plan will be issued in accordance with the Modified Joint
Plan of Reorganization under Chapter 11 of the United States Bankruptcy Code for
the Company and all of its domestic subsidiaries as confirmed by order of the
United States Bankruptcy Court for the District of Massachusetts, Western
Division, in Case No. 01-47330-HJB (the "Plan of Reorganization"). On the
Effective Date (as defined in the Plan of Reorganization), the Company shall
issue to continuing members of its management (the "Management Recipients"), in
such amounts and to such persons as are specified on Exhibit A attached hereto,
an aggregate of 882,200 shares of Common Stock (the "Initial Shares"). From time
to time, if and to the extent any portion of the Swing Shares (as defined in the
Plan of Reorganization) do not constitute USAM Secured Creditor Swing Shares (as
defined in the Plan of Reorganization), and if and to the extent any of the
Management Allocated Amount (as defined in the Plan of Reorganization) is
credited to the Plan, such Swing Shares that do not constitute USAM Secured
Creditor Swing Shares (the "Additional Swing Shares") and such Management
Allocated Amount that is credited to the Plan (collectively, the "Additional
Management Shares") shall be issued to the Management Recipients on the same
terms, including price (subject to proportionate adjustment for any stock splits
or similar events), as the Initial Shares and in proportion to the allocation of
the Initial Shares among the Management Recipients as specified on Exhibit A
attached hereto, except that the vesting for any Additional Swing Shares shall
be the same as the vesting for the Initial Shares (commencing as of the
Effective Date) and the Management Allocated Amount that is credited to the Plan
shall vest on the third anniversary of the Effective Date. Additional Management
Shares shall be issued to a Management Recipient who is no longer employed by
the Company on the date of issuance of Additional Management Shares only in
proportion to the number of Initial Shares that were vested at the time of
termination of employment of such Management Recipient, and the remaining
Additional Management Shares otherwise issuable to such Management Recipient
shall be forfeited and not issued.

                                       2
<PAGE>

5.       Stock Options

         (a) General. The Board may grant options to purchase Common Stock
(each, an "Option") and determine the number of shares of Common Stock to be
covered by each Option, the exercise price of each Option and the conditions and
limitations applicable to the exercise of each Option, including conditions
relating to applicable federal or state securities laws, as it considers
necessary or advisable. An Option which is not intended to be an Incentive Stock
Option (as hereinafter defined) shall be designated a "Nonstatutory Stock
Option".

         (b) Incentive Stock Options. An Option that the Board intends to be an
"incentive stock option" as defined in Section 422 of the Code (an "Incentive
Stock Option") shall only be granted to employees of the Company and shall be
subject to and shall be construed consistently with the requirements of Section
422 of the Code. The Company shall have no liability to a Participant, or any
other party, if an Option (or any part thereof) which is intended to be an
Incentive Stock Option is not an Incentive Stock Option.

         (c) Exercise Price. The Board shall establish the exercise price at the
time each Option is granted and specify it in the applicable option agreement;
provided, however, that the exercise price shall be not less than 100% of the
fair market value of the Common Stock, as determined by the Board, at the time
the Option is granted.

         (d) Duration of Options. Each Option shall be exercisable at such times
and subject to such terms and conditions as the Board may specify in the
applicable option agreement; provided, however, that no Option will be granted
for a term in excess of 10 years.

         (e) Exercise of Option. Options may be exercised by delivery to the
Company of a written notice of exercise signed by the proper person or by any
other form of notice (including electronic notice) approved by the Board
together with payment in full as specified in Section 5(f) for the number of
shares for which the Option is exercised.

         (f) Payment Upon Exercise. Common Stock purchased upon the exercise of
an Option granted under the Plan shall be paid for as follows:

                  (1) in cash or by check, payable to the order of the Company;

                  (2) except as the Board may, in its sole discretion, otherwise
provide in an option agreement, by (i) delivery of an irrevocable and
unconditional undertaking by a creditworthy broker to deliver promptly to the
Company sufficient funds to pay the exercise price and any required tax
withholding or (ii) delivery by the Participant to the Company of a copy of
irrevocable and unconditional instructions to a creditworthy broker to deliver
promptly to the Company cash or a check sufficient to pay the exercise price and
any required tax withholding;

                  (3) when the Common Stock is registered under the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), by delivery of shares of
Common Stock owned by the Participant valued at their fair market value as
determined by (or in a manner approved by) the Board in good faith ("Fair Market
Value"), provided (i) such method of payment is then

                                       3
<PAGE>

permitted under applicable law and (ii) such Common Stock, if acquired directly
from the Company, was owned by the Participant at least six months prior to such
delivery;

                  (4) to the extent permitted by the Board, in its sole
discretion by (i) delivery of a promissory note of the Participant to the
Company on terms determined by the Board, or (ii) payment of such other lawful
consideration as the Board may determine; or

                  (5) by any combination of the above permitted forms of
payment.

         (g) Substitute Options. In connection with a merger or consolidation of
an entity with the Company or the acquisition by the Company of property or
stock of an entity, the Board may grant Options in substitution for any options
or other stock or stock-based awards granted by such entity or an affiliate
thereof. Substitute Options may be granted on such terms as the Board deems
appropriate in the circumstances, notwithstanding any limitations on Options
contained in the other sections of this Section 5 or in Section 2.

6. Restricted Stock.

         (a) Grants. The Board may grant Awards entitling recipients to acquire
shares of Common Stock, subject to the right of the Company to repurchase all or
part of such shares at their issue price or other stated or formula price (or to
require forfeiture of such shares if issued at no cost) from the recipient in
the event that conditions specified by the Board in the applicable Award are not
satisfied prior to the end of the applicable restriction period or periods
established by the Board for such Award (each, a "Restricted Stock Award").

         (b) Terms and Conditions. The Board shall determine the terms and
conditions of any such Restricted Stock Award, including the conditions for
repurchase (or forfeiture) and the issue price, if any.

         (c) Stock Certificates. Any stock certificates issued in respect of a
Restricted Stock Award shall be registered in the name of the Participant and,
unless otherwise determined by the Board, deposited by the Participant, together
with a stock power endorsed in blank, with the Company (or its designee). At the
expiration of the applicable restriction periods, the Company (or such designee)
shall deliver the certificates no longer subject to such restrictions to the
Participant or if the Participant has died, to the beneficiary designated, in a
manner determined by the Board, by a Participant to receive amounts due or
exercise rights of the Participant in the event of the Participant's death (the
"Designated Beneficiary"). In the absence of an effective designation by a
Participant, Designated Beneficiary shall mean the Participant's estate.

7. Other Stock Based Awards. The Board shall have the right to grant other
Awards based upon the Common Stock having such terms and conditions as the Board
may determine, including the grant of shares based upon certain conditions, the
grant of securities convertible into Common Stock and the grant of stock
appreciation rights.

                                       4
<PAGE>

8. Adjustments for Changes in Common Stock and Certain Other Events

         (a) Changes in Capitalization. In the event of any stock split, reverse
stock split, stock dividend, recapitalization, combination of shares,
reclassification of shares, spin-off or other similar change in capitalization
or event, or any distribution to holders of Common Stock other than a normal
cash dividend, (i) the number and class of securities available under this Plan,
(ii) the per-Participant limit set forth in Section 4(b), (iii) the number and
class of securities and exercise price per share subject to each outstanding
Option, (iv) the repurchase price per share subject to each outstanding
Restricted Stock Award, and (v) the terms of each other outstanding Award shall
be appropriately adjusted by the Company (or substituted Awards may be made, if
applicable) to the extent the Board shall determine, in good faith, that such an
adjustment (or substitution) is necessary and appropriate. If this Section 8(a)
applies and Section 8(c) also applies to any event, Section 8(c) shall be
applicable to such event, and this Section 8(a) shall not be applicable.

         (b) Liquidation or Dissolution. In the event of a proposed liquidation
or dissolution of the Company, the Board shall upon written notice to the
Participants provide that all then unexercised Options will (i) become
exercisable in full as of a specified time at least 10 business days prior to
the effective date of such liquidation or dissolution and (ii) terminate
effective upon such liquidation or dissolution, except to the extent exercised
before such effective date. The Board may specify the effect of a liquidation or
dissolution on any Restricted Stock Award or other Award granted under the Plan
at the time of the grant of such Award.

         (c) Reorganization Events

                  (1) Definition. A "Reorganization Event" shall mean: (a) any
merger or consolidation of the Company with or into another entity as a result
of which all of the Common Stock of the Company is converted into or exchanged
for the right to receive cash, securities or other property or (b) any exchange
of all of the Common Stock of the Company for cash, securities or other property
pursuant to a share exchange transaction.

                  (2) Consequences of a Reorganization Event on Options. Except
to the extent otherwise provided in individual Awards: Upon the occurrence of a
Reorganization Event, or the execution by the Company of any agreement with
respect to a Reorganization Event, the Board shall provide that all outstanding
Options shall be assumed, or equivalent options shall be substituted, by the
acquiring or succeeding corporation (or an affiliate thereof). For purposes
hereof, an Option shall be considered to be assumed if, following consummation
of the Reorganization Event, the Option confers the right to purchase, for each
share of Common Stock subject to the Option immediately prior to the
consummation of the Reorganization Event, the consideration (whether cash,
securities or other property) received as a result of the Reorganization Event
by holders of Common Stock for each share of Common Stock held immediately prior
to the consummation of the Reorganization Event (and if holders were offered a
choice of consideration, the type of consideration chosen by the holders of a
majority of the outstanding shares of Common Stock); provided, however, that if
the consideration received as a result of the Reorganization Event is not solely
common stock of the acquiring or succeeding corporation (or an affiliate
thereof), the Company may, with the consent of the acquiring or

                                       5
<PAGE>

succeeding corporation, provide for the consideration to be received upon the
exercise of Options to consist solely of common stock of the acquiring or
succeeding corporation (or an affiliate thereof) equivalent in fair market value
to the per share consideration received by holders of outstanding shares of
Common Stock as a result of the Reorganization Event.

         Notwithstanding the foregoing, if the acquiring or succeeding
corporation (or an affiliate thereof) does not agree to assume, or substitute
for, such Options, then the Board shall, upon written notice to the
Participants, provide that all then unexercised Options will become exercisable
in full as of a specified time prior to the Reorganization Event and will
terminate immediately prior to the consummation of such Reorganization Event,
except to the extent exercised by the Participants before the consummation of
such Reorganization Event; provided, however, that in the event of a
Reorganization Event under the terms of which holders of Common Stock will
receive upon consummation thereof a cash payment for each share of Common Stock
surrendered pursuant to such Reorganization Event (the "Acquisition Price"),
then the Board may instead provide that all outstanding Options shall terminate
upon consummation of such Reorganization Event and that each Participant shall
receive, in exchange therefor, a cash payment equal to the amount (if any) by
which (A) the Acquisition Price multiplied by the number of shares of Common
Stock subject to such outstanding Options (whether or not then exercisable),
exceeds (B) the aggregate exercise price of such Options. To the extent all or
any portion of an Option becomes exercisable solely as a result of the first
sentence of this paragraph, upon exercise of such Option the Participant shall
receive shares subject to a right of repurchase by the Company or its successor
at the Option exercise price. Such repurchase right (1) shall lapse at the same
rate as the Option would have become exercisable under its terms and (2) shall
not apply to any shares subject to the Option that were exercisable under its
terms without regard to the first sentence of this paragraph.

                  (3) Consequences of a Reorganization Event on Restricted Stock
Awards. Except to the extent otherwise provided in individual Awards: Upon the
occurrence of a Reorganization Event, the repurchase and other rights of the
Company under each outstanding Restricted Stock Award shall inure to the benefit
of the Company's successor and shall apply to the cash, securities or other
property which the Common Stock was converted into or exchanged for pursuant to
such Reorganization Event in the same manner and to the same extent as they
applied to the Common Stock subject to such Restricted Stock Award.

                  (4) Consequences of a Reorganization Event on Other Awards.
The Board shall specify the effect of a Reorganization Event on any other Award
granted under the Plan at the time of the grant of such Award.

9. General Provisions Applicable to Awards

         (a) Transferability of Awards. Except as the Board may otherwise
determine or provide in an Award, Awards shall not be sold, assigned,
transferred, pledged or otherwise encumbered by the person to whom they are
granted, either voluntarily or by operation of law, except by will or the laws
of descent and distribution, and, during the life of the Participant, shall be
exercisable only by the Participant. References to a Participant, to the extent
relevant in the context, shall include references to authorized transferees.

                                       6
<PAGE>

         (b) Documentation. Each Award shall be evidenced in such form (written,
electronic or otherwise) as the Board shall determine. Each Award may contain
terms and conditions in addition to those set forth in the Plan.

         (c) Board Discretion. Except as otherwise provided by the Plan, each
Award may be made alone or in addition or in relation to any other Award. The
terms of each Award need not be identical, and the Board need not treat
Participants uniformly.

         (d) Termination of Status. The Board shall determine the effect on an
Award of the disability, death, retirement, authorized leave of absence or other
change in the employment or other status of a Participant and the extent to
which, and the period during which, the Participant, the Participant's legal
representative, conservator, guardian or Designated Beneficiary may exercise
rights under the Award.

         (e) Withholding. Each Participant shall pay to the Company, or make
provision satisfactory to the Board for payment of, any taxes required by law to
be withheld in connection with Awards to such Participant no later than the date
of the event creating the tax liability. Except as the Board may otherwise
provide in an Award, when the Common Stock is registered under the Exchange Act,
Participants may satisfy such tax obligations in whole or in part by delivery of
shares of Common Stock, including shares retained from the Award creating the
tax obligation, valued at their Fair Market Value; provided, however, that the
total tax withholding where stock is being used to satisfy such tax obligations
cannot exceed the Company's minimum statutory withholding obligations (based on
minimum statutory withholding rates for federal and state tax purposes,
including payroll taxes, that are applicable to such supplemental taxable
income). The Company may, to the extent permitted by law, deduct any such tax
obligations from any payment of any kind otherwise due to a Participant.

         (f) Amendment of Award. The Board may amend, modify or terminate any
outstanding Award, including but not limited to, substituting therefor another
Award of the same or a different type, changing the date of exercise or
realization, and converting an Incentive Stock Option to a Nonstatutory Stock
Option, provided that the Participant's consent to such action shall be required
unless the Board determines that the action, taking into account any related
action, would not materially and adversely affect the Participant.

         (g) Conditions on Delivery of Stock. The Company will not be obligated
to deliver any shares of Common Stock pursuant to the Plan or to remove
restrictions from shares previously delivered under the Plan until (i) all
conditions of the Award have been met or removed to the satisfaction of the
Company, (ii) in the opinion of the Company's counsel, all other legal matters
in connection with the issuance and delivery of such shares have been satisfied,
including any applicable securities laws and any applicable stock exchange or
stock market rules and regulations, and (iii) the Participant has executed and
delivered to the Company such representations or agreements as the Company may
consider appropriate to satisfy the requirements of any applicable laws, rules
or regulations.

         (h) Acceleration. The Board may at any time provide that any Options
shall become immediately exercisable in full or in part, that any Restricted
Stock Award shall be free of

                                       7
<PAGE>

restrictions in full or in part or that any other Awards may become exercisable
in full or in part or free of some or all restrictions or conditions, or
otherwise realizable in full or in part, as the case may be.

10. Miscellaneous

         (a) No Right To Employment or Other Status. No person shall have any
claim or right to be granted an Award, and the grant of an Award shall not be
construed as giving a Participant the right to continued employment or any other
relationship with the Company. The Company expressly reserves the right at any
time to dismiss or otherwise terminate its relationship with a Participant free
from any liability or claim under the Plan, except as expressly provided in the
applicable Award.

         (b) No Rights As Stockholder. Subject to the provisions of the
applicable Award, no Participant or Designated Beneficiary shall have any rights
as a stockholder with respect to any shares of Common Stock to be distributed
with respect to an Award until becoming the record holder of such shares.
Notwithstanding the foregoing, in the event the Company effects a split of the
Common Stock by means of a stock dividend and the exercise price of and the
number of shares subject to such Option are adjusted as of the date of the
distribution of the dividend (rather than as of the record date for such
dividend), then an optionee who exercises an Option between the record date and
the distribution date for such stock dividend shall be entitled to receive, on
the distribution date, the stock dividend with respect to the shares of Common
Stock acquired upon such Option exercise, notwithstanding the fact that such
shares were not outstanding as of the close of business on the record date for
such stock dividend.

         (c) Effective Date and Term of Plan. The Plan shall become effective on
the date on which it is adopted by the Board, but no Award granted to a
Participant that is intended to comply with Section 162(m) shall become
exercisable, vested or realizable, as applicable to such Award, unless and until
the Plan has been approved by the Company's stockholders to the extent
stockholder approval is required by Section 162(m) in the manner required under
Section 162(m) (including the vote required under Section 162(m)). No Awards
shall be granted under the Plan after the completion of ten years from the
earlier of (i) the date on which the Plan was adopted by the Board or (ii) the
date the Plan was approved by the Company's stockholders, but Awards previously
granted may extend beyond that date.

         (d) Amendment of Plan. The Board may amend, suspend or terminate the
Plan or any portion thereof at any time, provided that to the extent required by
Section 162(m), no Award granted to a Participant that is intended to comply
with Section 162(m) after the date of such amendment shall become exercisable,
realizable or vested, as applicable to such Award, unless and until such
amendment shall have been approved by the Company's stockholders if required by
Section 162(m) (including the vote required under Section 162(m)).

         (e) Governing Law. The provisions of the Plan and all Awards made
hereunder shall be governed by and interpreted in accordance with the laws of
the State of Delaware, without regard to any applicable conflicts of law.

                                       8
<PAGE>

                                    EXHIBIT A

<TABLE>
<CAPTION>
                                                                 Management Allocated     Total Potential
   Name                   Initial Shares       Swing Shares*            Amount*               Shares
   ----                   --------------       -------------            -------               ------
<S>                         <C>                   <C>                 <C>                   <C>
Ed Baker                      249,663               5,037               14,150                268,850
Lyn Daniels                   146,445               2,955                8,300                157,700
Roy Pottle                    118,215               2,385                6,700                127,300
Paul Kuzia                     73,223               1,477                4,150                 78,850
Peter Barnett                  59,107               1,193                3,350                 63,650
Tony Battaglia                 59,107               1,193                3,350                 63,650
Chris Kollman                  59,107               1,193                3,350                 63,650
Dave Andersen                  59,107               1,193                3,350                 63,650
Pat Gray                       29,113                 587                1,650                 31,350
Chris Madden                   29,113                 587                1,650                 31,350
                              -------              ------               ------                -------
                              882,200              17,800               50,000                950,000

</TABLE>

*these shares will be issued only to the extent provided in Section 4(c) of the
Plan

                                      A-1

<PAGE>
                               ARCH WIRELESS, INC.

                               AMENDMENT NO. 1 TO
                            2002 STOCK INCENTIVE PLAN

     Pursuant to Section 10(d) of the 2002 Stock Incentive Plan (the "Plan") of
Arch Wireless, Inc., a Delaware corporation (the "Company"), the Plan be, and
hereby is, amended as set forth below. Capitalized terms used and not defined
herein shall have the meanings ascribed to them in the Plan.

     1.   The first sentence of Section 4(a) of the Plan is hereby deleted in
its entirety and the following is substituted in its place:

               "(a) Number of Shares. Subject to adjustment under Section 8,
          Awards may be made under the Plan for up to 1,200,000 shares of common
          stock, $.001 par value per share, of the Company (the "Common
          Stock")."

provided, however, that if that certain Agreement and Plan of Merger, dated as
of May 6, 2003, by and between the Company and Arch 382 Corporation, a Delaware
corporation and wholly owned subsidiary of the Company, is adopted by the
stockholders of the Company, upon and following the Effective Date (as defined
therein) all references to Common Stock contained in this Plan shall be deemed
to refer to the Class A Common Stock, $.0001 par value per share, of the
Company, the right to receive into which the Common Stock was converted on the
Effective Date.

     2.   A new Section 4(d) of the Plan is hereby inserted to read as follows:

               "(d) Issuance of Stock Options to Non-Employee Directors. Upon
          approval by the stockholders of the Company, the Company shall grant
          Nonstatutory Stock Options (as defined in Section 5(a) below) with
          respect to an aggregate of 250,000 shares of Common Stock (the
          "Outside Director Options") to its incumbent non-employee directors,
          consisting of Nonstatutory Stock Options for 41,666 shares to each
          person who is serving as a non-employee director of the Company
          immediately prior to the 2003 Annual Meeting and who is reelected to
          the board at the 2003 Annual Meeting, with an exercise price of $.001
          per share. Subject to continued service as a director of the Company,
          the Outside Director Options shall vest 50% on May 29, 2003 and 50% on
          May 29, 2004. All Outside Director Options will become immediately
          vested upon a change in control of the Company, as such term is
          defined in the nonstatutory stock option agreements entered into
          between the Company and the recipients of the Outside Director
          Options."

     3.   Section 5(c) of the Plan is hereby deleted in its entirety and the
following is substituted in its place:

               "(c) Exercise Price. The Board shall establish the exercise price
          at the time each Option is granted and specify it in the applicable
          option agreement; provided, however, that, in the case of Incentive
          Stock Options, the exercise price shall be not less

<PAGE>

          than 100% of the fair market value of the Common Stock, as
          determined by the Board, at the time the Option is granted."

     4.   This amendment shall be effective as of the date approved by the
stockholders of the Company.

                                Adopted by the Board of Directors on May 5, 2003

                                       Approved by Stockholders on June 12, 2003

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