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                                                                    EXHIBIT 10.1

            FIFTH AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

      THIS FIFTH AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT (this
"Agreement") is made as of this 10th day of November, 2004 by and among (1)
iRobot Corporation, a Delaware corporation (the "Company"); (2) Rodney Brooks,
Colin M. Angle, Helen Greiner, David Adler and Grinnell More (each, a "Founder"
and collectively, the "Founders"); (3) Hasbro, Inc., a Rhode Island corporation
("Hasbro"); (4) Acer Technology Venture Fund L.P., a Cayman Islands limited
partnership ("Acer"); (5) First Albany Companies, Inc., a New York corporation
("FAC"); (6) the holders of the Company's Series C Convertible Preferred Stock,
$.01 par value per share (the "Series C Preferred Stock") set forth on Schedule
I hereto (collectively, the "Series C Investors"); (7) the holders of the
Company's Series D Convertible Preferred Stock, $.01 par value per share (the
"Series D Preferred Stock") set forth on Schedule I hereto (collectively, the
"Series D Investors"), (8) the holders of the Company's Series E Convertible
Preferred Stock, $.01 par value per share (the "Series E Preferred Stock") set
forth on Schedule I hereto, (9) the holders of the Company's Series F
Convertible Preferred Stock, $.01 par value per share (the "Series F Investors")
set forth on Schedule I attached hereto and, from and after the time that it
becomes a party to this Agreement by execution of a counterpart signature page
in substantially the form attached as Exhibit A countersigned by the Company (a
"Counterpart Signature Page"), each additional holder of Series F Preferred
Stock executing a Counterpart Signature Page (each of Acer, FAC, Hasbro, the
Series C Investors, the Series D Investors, the Series E Investors and the
Series F Investors being referred to herein individually as an "Investor" and
all collectively being referred to as the "Investors"); (10) the stockholders
identified on Schedule I hereto as the Additional Stockholders; and (11) any
other stockholder, warrantholder or optionholder who from time to time becomes a
party to this Agreement by execution of a Joinder Agreement in the form attached
as Exhibit B hereto (collectively, the "Additional Stockholders"). The Founders
and the Additional Stockholders are herein referred to collectively as the
"Stockholders" and individually as a "Stockholder."

      WHEREAS, all of the parties hereto except the Series F Investors are
parties to that certain Fourth Amended and Restated Registration Rights
Agreement dated as of February 28, 2003 (the "Prior Agreement") amending and
restating a Third Amended and Restated Registration Rights Agreement dated as of
August 24, 2001, which amended and restated a Second Amended and Restated
Registration Rights Agreement dated as of February 15, 2000, which amended and
restated a Registration Rights Agreement dated August 25, 1999, which amended
and restated a Registration Rights Agreement dated as of November 17, 1998; and

      WHEREAS, the Founders are holders of shares of the Company's Common Stock
(as defined herein);

      WHEREAS, Acer, FAC, the Series C Investors, the Series D Investors, the
Series E Investors and the Series F Investors are holders of shares of Series A
Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D
Preferred Stock, Series E Preferred Stock and Series F Preferred Stock;

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      WHEREAS, Hasbro is the holder of shares of the Company's Common Stock; and

      WHEREAS, it is a condition to the purchase by the Series F Investors of
shares of Series F Preferred Stock that the Prior Agreement be further amended
and restated as provided herein, and the Company, Investors and Stockholders
desire to further amend and restate the Prior Agreement as provided herein;

      NOW THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements hereinafter set forth, and for other good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the
parties hereto agree that the Prior Agreement is hereby amended and restated in
its entirety as follows:

                                    ARTICLE I

                                   DEFINITIONS

      SECTION 1.1 CONSTRUCTION OF TERMS. As used herein, the masculine, feminine
or neuter gender, and the singular or plural number, shall be deemed to be or to
include the other genders or number, as the case may be, whenever the context so
indicates or requires.

      SECTION 1.2 NUMBER OF SHARES OF STOCK. Whenever any provision of this
Agreement calls for any calculation based on a number of shares of Common Stock
held by a Stockholder or an Investor, the number of shares deemed to be held by
a Stockholder or an Investor shall be the total number of shares of Common Stock
then owned by such Stockholder or Investor, plus the total number of shares of
Common Stock issuable upon conversion of any Preferred Stock or other
convertible securities or exercise of any vested options, warrants or
subscription rights then owned by such Stockholder or Investor.

      SECTION 1.3 DEFINED TERMS. The following capitalized terms, as used in
this Agreement, shall have the meanings set forth below.

      An "AFFILIATE" of any Person means a Person that directly or indirectly,
through one or more intermediaries, controls, is controlled by or is under
common control with the first mentioned Person. A Person shall be deemed to
control another Person if such first Person possesses directly or indirectly the
power to direct, or cause the direction of, the management and policies of the
second Person, whether through the ownership of voting securities, by contract
or otherwise.

      "BOARD OF DIRECTORS" means the Board of Directors of the Company.

      "COMMISSION" means the Securities and Exchange Commission.

      "COMMON STOCK" means the Common Stock, $.01 par value per share, of the
Company and any other common equity securities now or hereafter issued by the
Company, and any other shares of stock issued or issuable with respect thereto
(whether by way of a stock dividend or stock split or in exchange for or in
replacement of or upon conversion of such shares or

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otherwise in connection with a combination of shares, recapitalization, merger,
consolidation or other corporate reorganization).

      "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended from
time to time, and the rules and regulations promulgated thereunder.

      "PERSON" means an individual, a corporation, an association, a
partnership, a limited liability company, an estate, a trust, and any other
entity or organization, governmental or otherwise.

      "PREFERRED STOCK" means the Series A Preferred Stock, the Series B
Preferred Stock, the Series C Preferred Stock, the Series D Preferred Stock, the
Series E Preferred Stock and/or the Series F Preferred Stock.

      "REGISTRABLE SECURITIES" means (i) any shares of Common Stock held by an
Investor, (ii) any shares of Common Stock subject to acquisition by an Investor
upon conversion of shares of Preferred Stock (it being understood that if an
Investor owns Preferred Stock, the Investor may exercise its registration rights
hereunder by converting the shares to be sold under the relevant registration
statement into Common Stock as of the closing of the relevant offering and shall
not be required to cause such Preferred Stock to be converted to Common Stock
until immediately prior to the occurrence of such closing), (iii) for purposes
of Sections 2.1, 2.3, 2.4, 2.5, 2.7, and 3.1, any shares of Common Stock held by
a Founder and any shares of Common Stock subject to acquisition by a Founder
upon conversion or exercise of securities convertible or exercisable into shares
of Common Stock (it being understood that if a Founder owns such securities, the
Founder may exercise its registration rights hereunder by converting or
exercising the shares to be sold under the relevant registration statement into
Common Stock as of the closing of the relevant offering and shall not be
required to cause such securities to be converted or exercised into Common Stock
until immediately prior to the occurrence of such closing), and (iv) any
securities issued and issuable with respect to any such shares described in
clauses (i), (ii) or (iii) above by way of a stock dividend or stock split or in
connection with a combination of shares, recapitalization, merger, consolidation
or other reorganization; provided, however, that notwithstanding anything to the
contrary contained herein, "Registrable Securities" shall not include at any
time securities (i) that have been sold in a registered sale pursuant to an
effective registration statement under the Securities Act, (ii) that have been
sold to the public pursuant to Rule 144 under the Securities Act, (iii) held by
a holder of less than three percent (3%) of the outstanding capital stock of the
Company which could then be sold in their entirety pursuant to Rule 144 under
the Securities Act without limitation or restriction, except to the extent that
such holder is prevented from selling such shares pursuant to the market
stand-off agreement set forth in Section 2.6.

      "SECURITIES ACT" means the Securities Act of 1933, as amended from time to
time, and the rules and regulations promulgated thereunder.

      "TRANSFER" means any direct or indirect transfer, donation, sale,
assignment, pledge, hypothecation, grant of a security interest in or other
disposal or attempted disposal of all or any

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portion of a security or of any rights. "Transferred" means the accomplishment
of a Transfer, and "Transferee" means the recipient of a Transfer.

                                   ARTICLE II

                               REGISTRATION RIGHTS

      SECTION 2.1 OPTIONAL REGISTRATIONS. If at any time or times after the date
hereof the Company shall seek to register any shares of its Common Stock under
the Securities Act for sale to the public (except with respect to registration
statements on Form S-4, S-8 or other similar form not available for registering
the Registrable Securities for general sale to the public) for its own account
or for the account of any other Person, including, without limitation, any
registration pursuant to Section 2.2, the Company will promptly give written
notice thereof to all holders of Registrable Securities (the "Holders"). If
within twenty (20) days after their receipt of such notice one or more Holders
request the inclusion of some or all of the Registrable Securities owned by them
in such registration, the Company will use its best efforts to effect the
registration under the Securities Act of such Registrable Securities. In the
case of the registration of shares of capital stock by the Company in connection
with any underwritten public offering, if the underwriter(s) determines that
marketing factors require a limitation on the number of Registrable Securities
to be offered, subject to the following sentence, the Company shall not be
required to register Registrable Securities of the Holders in excess of the
amount, if any, of shares of the capital stock which the principal underwriter
of such underwritten offering shall reasonably and in good faith agree to
include in such offering in addition to any amount to be registered for the
account of the Company and/or such other Person on whose account the Company had
initially sought to register the shares. If any limitation of the number of
shares of Registrable Securities to be registered by the Holders is required
pursuant to this Section 2.1, the number of shares to be excluded shall be
determined in the following order and on the following basis: first, on a pro
rata basis based upon the respective holdings of Registrable Securities by such
Holders who are neither Founders nor Investors; second, on a pro rata basis
based upon the respective holdings of Registrable Securities by such Holders who
are Founders; and third, on a pro rata basis based upon the respective holdings
of Registrable Securities by such Holders who are Investors, provided, however,
that in no event shall the above cutback provision reduce the number of
Registrable Securities included in such registration to a number that is less
than 25% of the total number of shares of capital stock to be included in such
underwritten public offering, including any amount to be registered for the
account of the Company and any Person on whose account the Company had initially
sought to register the shares, except with respect to the Company's initial
public offering of its Common Stock, in which case the number of shares of
Registrable Securities to be included may be reduced to zero (0).

      SECTION 2.2 REQUIRED REGISTRATIONS.

            (a)   DEMAND REGISTRATION.

                  (i) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, Fenway Partners
Capital Fund II, L.P. ("Fenway") and/or one or more

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Series D Investors holding at least 20% of the Registrable Securities originally
issued to Fenway and such Series D Investors and then held by Fenway and/or such
Series D Investors may request that the Company register under the Securities
Act all or a portion of the Series D Preferred Stock held by Fenway and/or such
Series D Investors having an aggregate value (based on the then current market
price) of at least (A) $7,500,000 or (B) if the Series D Preferred Stock for
which such registration is requested represent all of the Series D Preferred
Stock held by Fenway and/or such Series D Investor, $1,000,000. The Company
shall not be obligated to effect, or to take any action to effect, any
registration pursuant to this Section 2.2(a)(i) after the Company has effected
two (2) registrations pursuant to this Section 2.2(a)(i) and such registrations
have been declared or ordered effective.

                  (ii) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, Acer and/or one or
more Investors holding at least 50% of those Registrable Securities originally
issued to Acer and then held by Acer and such Investors may request that the
Company register under the Securities Act all or a portion of the Registrable
Securities held by Acer and such requesting Investors having an aggregate value
(based on the then current market price) of at least (A) $7,500,000 or (B) if
the Registrable Securities for which such registration is requested represent
all of the Registrable Securities held by Acer and such Investors, $1,000,000.
The Company shall not be obligated to effect, or to take any action to effect,
any registration pursuant to this Section 2.2(a)(ii) after the Company has
effected two (2) registrations pursuant to this Section 2.2(a)(ii) and such
registrations have been declared or ordered effective.

                  (iii) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, Hasbro and/or one
or more Investors holding at least 50% of those Registrable Securities
originally issued to Hasbro and then held by Hasbro and such Investors may
request that the Company register under the Securities Act all or a portion of
the Registrable Securities held by Hasbro and such requesting Investors having
an aggregate value (based on the then current market price) of at least (A)
$7,500,000 or (B) if the Registrable Securities for which such registration is
requested represent all of the Registrable Securities held by Hasbro and such
Investors, $1,000,000. The Company shall not be obligated to effect, or to take
any action to effect, any registration pursuant to this Section 2.2(a)(iii)
after the Company has effected two (2) registrations pursuant to this Section
2.2(a)(iii) and such registrations have been declared or ordered effective.

                  (iv) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, FAC and/or one or
more Investors holding at least 50% of those Registrable Securities originally
issued to FAC and then held by FAC and such Investors may request that the
Company register under the Securities Act all or a portion of the Registrable
Securities held by FAC and such requesting Investors having an aggregate value
(based on the then current market price) of at least (A) $7,500,000 or (B) if
the Registrable Securities for which such registration is requested represent
all of the Registrable Securities held by FAC and such Investors, $1,000,000.
The Company shall not be obligated to effect, or to take any action

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to effect, any registration pursuant to this Section 2.2(a)(iv) after the
Company has effected two (2) registrations pursuant to this Section 2.2(a)(iv)
and such registrations have been declared or ordered effective.

                  (v) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, one or more
Investors holding at least 50% of those Registrable Securities originally issued
to the Series C Investors and then held by the Series C Investors and such
Investors may request that the Company register under the Securities Act all or
a portion of the Registrable Securities held by the Series C Investors and such
requesting Investors having an aggregate value (based on the then current market
price) of at least (A) $7,500,000 or (B) if the Registrable Securities for which
such registration is requested represent all of the Registrable Securities held
by such Investors, $1,000,000. The Company shall not be obligated to effect, or
to take any action to effect, any registration pursuant to this Section
2.2(a)(v) after the Company has effected two (2) registrations pursuant to this
Section 2.2(a)(v) and such registrations have been declared or ordered
effective.

                  (vi) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, Trident Capital
Fund-V, L.P. and affiliates (collectively, "Trident") and/or one or more Series
E Investors holding at least 20% of the Registrable Securities originally issued
to Trident and such Series E Investors and then held by Trident and/or such
Series E Investors may request that the Company register under the Securities
Act all or a portion of the Registrable Securities held by Trident and/or such
Series E Investors having an aggregate value (based on the then current market
price) of at least (A) $7,500,000 or (B) if the Registrable Securities for which
such registration is requested represent all of the Registrable Securities held
by Trident and/or such Series E Investor, $1,000,000. The Company shall not be
obligated to effect, or to take any action to effect, any registration pursuant
to this Section 2.2(a)(vi) after the Company has effected two (2) registrations
pursuant to this Section 2.2(a)(vi) and such registrations have been declared or
ordered effective.

                  (vii) At any time that is at least six (6) months after the
initial underwritten public offering of Common Stock by the Company pursuant to
an effective registration statement under the Securities Act, Explore Holdings
L.L.C. ("Explore") and/or one or more Series F Investors holding at least 50% of
those Registrable Securities originally issued to Explore and such Series F
Investors and then held by Explore and/or such Series F Investors may request
that the Company register under the Securities Act all or a portion of the
Registrable Securities held by Explore and/or such Series F Investors having an
aggregate value (based on the then current market price) of at least (A)
$7,500,000 or (B) if the Registrable Securities for which such registration is
requested represent all of the Registrable Securities held by Explore and/or
such Series F Investors, $1,000,000. The Company shall not be obligated to
effect, or to take any action to effect, any registration pursuant to this
Section 2.2(a)(vii) after the Company after the Company has effected one (1)
registration pursuant to this Section 2.2(a)(vii) and such registration has been
declared or ordered effective.

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            (b) FORM S-3. After the Company's initial public offering of Common
Stock registered under the Securities Act, the Company shall use its best
efforts to qualify and remain qualified to register securities on Form S-3 (or
any successor form) under the Securities Act. In addition to the rights set
forth in Section 2.2(a), so long as the Company is qualified to register
securities on Form S-3 (or any successor form), any Investor or Investors shall
have the right to request registration on Form S-3 (or any successor form) for
the Registrable Securities held by such requesting Investor having an aggregate
value of at least $500,000 (based on the then current market price), including
registrations for the sale of such Registrable Securities on a delayed or
continuous basis pursuant to Rule 415 under the Securities Act. Such requests
shall be in writing and shall state the number of shares of Registrable
Securities to be disposed of and the intended method of disposition of such
shares by such Investor or Investors. Registrations effected pursuant to this
Section 2.2(b) shall not be counted as demands for registration or registrations
effected pursuant to Section 2.2(a). The Company shall not be obligated to
effect, or to take any action to effect, any registration pursuant to this
Section 2.2(b) (i) for any Investor if the Company has effected two (2)
registrations initiated at the request of such Investor pursuant to this Section
2.2(b) and such registrations have been declared or ordered effective or (ii) if
the Company has, within the twelve (12) month period preceding the date of such
request, already effected four (4) registrations for any Investors pursuant to
this Section 2.2(b) and such registrations have been declared or ordered
effective.

            (c) REGISTRATION REQUIREMENTS. Following a request pursuant to
Section 2.2(a) or (b) above, the Company will promptly notify all of the Holders
who would be entitled to notice of a proposed registration under Section 2.1
above and any other holder of piggyback registration rights of its receipt of
such notification from such Investor or Investors. Upon the written request of
any such Holder or other holder of the Company's securities delivered to the
Company within twenty (20) days after receipt from the Company of such
notification, the Company will use its best efforts to cause such of the
Registrable Securities as may be requested by any Holders and any other holder
of piggyback registration rights to be registered under the Securities Act in
accordance with the terms of Section 2.1. If the request for registration
contemplates an underwritten public offering, the Company shall state such in
the written notice and in such event the right of any Person to participate in
such registration shall be conditioned upon their participation in such
underwritten public offering and the inclusion of their securities in the
underwritten public offering to the extent provided herein. If the Company fails
to register all shares for which registration has been properly requested
pursuant to Section 2.2(a) or 2.2(b), other than because the number of such
shares, plus the number of shares required to be allocated to the exercise of
piggy-back rights in respect of Registrable Securities pursuant to Section 2.1,
exceeds the number of Registrable Securities which the underwriter thereof
determines can be sold in light of then applicable marketing factors, then
except as otherwise provided in this Agreement such registration shall not be
considered a request pursuant to Section 2.2(a) or 2.2(b).

            (d) UNDERWRITTEN OFFERING. If a requested registration pursuant to
Section 2.2 hereof involves an underwritten public offering and the managing
underwriter of such offering determines in good faith that the number of
securities sought to be offered should be limited due to market conditions, then
the number of securities to be included in such underwritten public offering
shall be reduced to a number deemed satisfactory by such managing

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underwriter, provided that the shares to be excluded shall be determined in the
following sequence: (i) first, securities held by any Persons other than the
Founders and the Investors, (ii) second, securities held by any Founders, (iii)
third, shares sought to be registered by the Company and (iv) fourth,
Registrable Securities of Investors requesting such registration (whether
pursuant to Section 2.1 or this Section 2.2). If there is a reduction of the
number of Registrable Securities to be included in the registration pursuant to
clause (i), (ii) or (iv), the reduction shall be effected among the holders
covered by such respective clause (i), (ii) or (iv) (as the case may be) on a
pro rata basis (based upon the respective number of shares of Registrable
Securities and other securities entitled to registration held by such holders).
Any Investor who sells more than fifty percent (50%) of the Registrable
Securities then held by such Investor pursuant to any registration requested
under Section 2.2(a) shall be deemed to have exercised one of the demand
registration rights granted to such Investor pursuant to Section 2.2(a),
regardless of whether such Investor requested such registration pursuant to
Section 2.2(a). With respect to a request for registration pursuant to Section
2.2(a) or (b) which is for an underwritten public offering, the managing
underwriter shall be chosen by the Investors requesting such registration,
subject to the Company's approval which shall not be unreasonably withheld.

            (e) POSTPONEMENT. The Company may postpone the filing of any
registration statement required hereunder for a reasonable period of time, not
to exceed ninety (90) days in the aggregate during any twelve-month period, if
the Company has been advised by legal counsel that such filing would require a
special audit or the disclosure of a material impending transaction or other
matter and the Company's Board of Directors determines reasonably and in good
faith that such disclosure would have a material adverse effect on the Company.
The Company shall not be required to cause a registration statement requested
pursuant to this Section 2.2 to become effective prior to ninety (90) days
following the effective date of a registration statement initiated by the
Company (or one hundred eighty (180) days in the case of the Company's initial
public offering of its Common Stock), if the request for registration has been
received by the Company subsequent to the giving of written notice by the
Company, made in good faith, to the Investors that the Company is commencing to
prepare a Company-initiated registration statement (other than a registration
effected solely to implement an employee benefit plan or a transaction to which
Rule 145 or any other similar rule under the Securities Act is applicable);
provided, however, that the Company shall use its best efforts to achieve such
effectiveness promptly following such period. Notwithstanding anything in this
Agreement to the contrary, the Company shall not be obligated to effect more
than one registration pursuant to Section 2.2(a) in any six-month period.

      SECTION 2.3 FURTHER OBLIGATIONS OF THE COMPANY. Whenever the Company is
required hereunder to register any Registrable Securities, it agrees that it
shall also do the following:

            (a) Pay all expenses of such registrations and offerings (exclusive
of underwriting discounts and commissions) and the reasonable fees and expenses
of not more than one independent counsel for the Holders in connection with any
registrations pursuant to Section 2.1 or 2.2, any such counsel to be selected by
the Investor requesting registration under Section 2.2 (if any) and otherwise to
be selected by a majority of the Holders selling in such registration;

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            (b) Use its best efforts diligently to prepare and file with the
Commission, within sixty (60) days of request, a registration statement and such
amendments and supplements to said registration statement and the prospectus
used in connection therewith as may be necessary to keep said registration
statement effective until the earlier of the sale of all Registrable Securities
covered thereby and one hundred twenty (120) days, and to comply with the
provisions of the Securities Act with respect to the sale of securities covered
by said registration statement for such period;

            (c) Furnish to each selling Holder such copies of each preliminary
and final prospectus and such other documents as such Holder may reasonably
request to facilitate the public offering of its Registrable Securities;

            (d) In the event of any underwritten public offering, enter into and
perform its obligations under an underwriting agreement, in usual and customary
form, with the underwriter(s) of such offering; each Holder participating in
such underwriting shall also enter into and perform its obligations under such
an agreement;

            (e) Use its best efforts to register or qualify the securities
covered by said registration statement under the securities or "blue sky" laws
of such jurisdictions as any selling Holder may reasonably request; provided,
that the Company shall not be required to register or qualify the securities in
any jurisdictions in which such registration or qualification would require it
to qualify to do business or consent to general service of process therein;

            (f) Immediately notify each selling Holder, at any time when a
prospectus relating to his, her or its Registrable Securities is required to be
delivered under the Securities Act, of the happening of any event as a result of
which such prospectus contains an untrue statement of a material fact or omits
any material fact necessary to make the statements therein not misleading, and,
at the request of any such selling Holder, prepare a supplement or amendment to
such prospectus so that, as thereafter delivered to the purchasers of such
Registrable Securities, such prospectus will not contain any untrue statement of
a material fact or omit to state any material fact necessary to make the
statements therein not misleading;

            (g) Cause all such Registrable Securities to be listed on each
securities exchange or quotation system on which similar securities issued by
the Company are then listed or quoted;

            (h) Otherwise use its best efforts to comply with the securities
laws of the United States and other applicable jurisdictions and all applicable
rules and regulations of the Commission and comparable governmental agencies in
other applicable jurisdictions;

            (i) If the offering is underwritten, use its best efforts to obtain
and furnish to each selling Holder, immediately prior to the effectiveness of
the registration statement and, at the time of delivery of any Registrable
Securities sold pursuant thereto, a cold comfort letter from the Company's
independent public accountants in customary form and covering such matters of
the type customarily covered by cold comfort letters as any Investor requesting

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registration under Section 2.2 or the Holders of a majority of the Registrable
Securities being sold may reasonably request;

            (j) Otherwise cooperate with the underwriter or underwriters, the
Commission and other regulatory agencies and take all actions and execute and
deliver or cause to be executed and delivered all documents necessary to effect
the registration of any Registrable Securities under this Article II; and

            (k) Use its best efforts to obtain and furnish to each selling
Holder such legal opinions, if any, of counsel to the Company, addressed to each
selling Holder, as are usual and customary under the circumstances.

      SECTION 2.4 INDEMNIFICATION; CONTRIBUTION.

            (a) Incident to any registration statement referred to in this
Article II, the Company will indemnify and hold harmless each underwriter, each
Holder who offers or sells any such Registrable Securities in connection with
such registration statement (including its partners (including partners of
partners and stockholders of any such partners), and directors, officers,
employees and agents of any of them (a "Selling Holder"), and each person who
controls any of them within the meaning of Section 15 of the Securities Act or
Section 20 of the Exchange Act (a "Controlling Person")), from and against any
and all losses, claims, damages, expenses and liabilities, joint or several
(including any reasonable investigation, legal and other expenses incurred in
connection with, and any amount paid in settlement of, any action, suit or
proceeding or any claim asserted, as the same are incurred), to which they, or
any of them, may become subject under the Securities Act, the Exchange Act or
other federal or state statutory law or regulation, at common law or otherwise,
insofar as such losses, claims, damages or liabilities arise out of or are based
on (i) any untrue statement or alleged untrue statement of a material fact
contained in such registration statement (including any related preliminary or
definitive prospectus, or any amendment or supplement to such registration
statement or prospectus), (ii) any omission or alleged omission to state in such
document a material fact required to be stated in it or necessary to make the
statements in it not misleading in light of the circumstances under which such
statements were made, or (iii) any violation by the Company of the Securities
Act, any state securities or "blue sky" laws or any rule or regulation
thereunder in connection with such registration; provided, however, that the
Company will not be obligated to indemnify any party to the extent that such
loss, claim, damage, expense or liability arises from and is based on an untrue
statement or omission or alleged untrue statement or omission made in reliance
on and in conformity with information furnished in writing to the Company by or
on behalf of such party expressly for use in such registration statement.

            (b) Each Selling Holder will indemnify and hold harmless the Company
(including its directors, officers, employees and agents), each underwriter and
each other Holder (including its partners (including partners of partners and
stockholders of such partners), and directors, officers, employees and agents of
any of them, and each person who controls any of them within the meaning of
Section 15 of the Securities Act or Section 20 of the Exchange Act), from and
against any and all losses, claims, damages, expenses and liabilities, joint or
several (including any reasonable investigation, legal and other expenses
incurred in connection with,

                                       10
<PAGE>

and any amount paid in settlement of, any action, suit or proceeding or any
claim asserted, as the same are incurred), to which they, or any of them, may
become subject under the Securities Act, the Exchange Act or other federal or
state statutory law or regulation, at common law or otherwise with respect to
any untrue statement or alleged untrue statement of a material fact contained in
information furnished in writing to the Company by such Selling Holder expressly
for use in such registration statement or any omission or alleged omission to
state in such information a material fact required to be stated in it or
necessary to make the statements in it not misleading in light of the
circumstances under which such statements were made. In no event, however, shall
the liability of a Selling Holder for indemnification under this Section 2.4(b)
exceed the net proceeds received by such Selling Holder from its sale of
Registrable Securities under such registration statement.

            (c) If the indemnification provided for in Section 2.4(a) or (b)
above for any reason is held by a court of competent jurisdiction to be
unavailable to an indemnified party in respect of any losses, claims, damages,
expenses or liabilities referred to therein, then each indemnifying party under
this Section 2.4, in lieu of indemnifying such indemnified party thereunder,
shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages, expenses or liabilities in such
proportion as is appropriate to reflect (i) the relative benefits received by
the Company, the other Selling Holders and the underwriters from the offering of
the Registrable Securities, (ii) the relative fault of the Company, the other
Selling Holders and the underwriters in connection with the statements or
omissions which resulted in such losses, claims, damages, expenses or
liabilities, and (iii) any other relevant equitable considerations. The relative
benefits received by the Company, the Selling Holders and the underwriters shall
be deemed to be in the same respective proportions that the net proceeds from
the offering (before deducting expenses) received by the Company and the Selling
Holders and the underwriting discount received by the underwriters, in each case
as set forth in the table on the cover page of the applicable prospectus, bear
to the aggregate public offering price of the Registrable Securities. The
relative fault of the Company, the Selling Holders and the underwriters shall be
determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to state
a material fact relates to information supplied by the Company, the Selling
Holders or the underwriters and the parties' relative intent, knowledge, access
to information and opportunity to correct or prevent such statement or omission.

            The Company, the Selling Holders, and the underwriters agree that it
would not be just and equitable if contribution pursuant to this Section 2.4(c)
were determined by pro rata or per capita allocation or by any other method of
allocation which does not take account of the equitable considerations referred
to in the immediately preceding paragraph. In no event, however, shall a Selling
Holder be required to contribute any amount under this Section 2.4(c) in excess
of the net proceeds received by such Selling Holder from its sale of Registrable
Securities under such registration statement. No person found guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the
Securities Act) shall be entitled to contribution from any person who was not
found guilty of such fraudulent misrepresentation.

            (d) The amount paid by an indemnifying party or payable to an
indemnified party as a result of the losses, claims, damages and liabilities
referred to in this Section 2.4 shall

                                       11
<PAGE>

be deemed to include, subject to the limitations set forth above, any legal or
other expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim, payable as the same are
incurred. The indemnification obligations set forth in this Section 2.4 shall
not apply to amounts paid by the indemnified party in any settlement that is
effected without the consent of the party from whom indemnification sought,
which consent shall not be unreasonably withheld. The indemnification and
contribution provided for in this Section 2.4 will remain in full force and
effect regardless of any investigation made by or on behalf of the indemnified
parties or any officer, director, employee, agent or controlling person of the
indemnified parties. No indemnifying party, in the defense of any such claim or
litigation, shall, except with the consent of such indemnified party, which
consent shall not be unreasonably withheld, consent to entry of any judgment or
enter into any settlement which does not include as an unconditional term
thereof the giving by the claimant or plaintiff to such indemnified party of a
release from all liability in respect of such claim or litigation.

            (e) Notwithstanding the foregoing, to the extent that the provisions
on indemnification and contribution contained in an underwriting agreement
entered into in connection with an underwritten public offering are in conflict
with the provisions of this Agreement, the provisions in such underwriting
agreement shall control.

      SECTION 2.5 RULE 144 AND RULE 144A REQUIREMENTS. With a view to making
available to the Holders the benefits of Rule 144 promulgated under the Act and
any other rule or regulation of the Commission that may at any time permit a
Holder to sell securities of the Company to the public without registration or
pursuant to a registration on Form S-3, the Company agrees to use its best
efforts to:

            (a) make and keep public information available, as those terms are
understood and defined in Commission Rule 144, at all times after ninety (90)
days after the effective date of the first registration statement filed by the
Company for the offering of its securities to the general public;

            (b) take such action, including the voluntary registration of its
Common Stock under Section 12 of the Exchange Act, as is necessary to enable the
Holders to utilize Form S-3 for the sale of their Registrable Securities, such
action to be taken as soon as practicable after the end of the fiscal year in
which the first registration statement filed by the Company for the offering of
its securities to the general public is declared effective;

            (c) file with the Commission in a timely manner all reports and
other documents required of the Company under the Act and the Exchange Act; and

            (d) furnish to any Holder, so long as the Holder owns any
Registrable Securities, forthwith upon request (i) a written statement by the
Company that it has complied with the reporting requirements of Commission Rule
144 (at any time after ninety (90) days after the effective date of the first
registration statement filed by the Company), the Act and the Exchange Act (at
any time after it has become subject to such reporting requirements), or that it
qualifies as a registrant whose securities may be resold pursuant to Form S-3
(at any time after it so qualifies), (ii) a copy of the most recent annual or
quarterly report of the Company and such other reports and documents so filed by
the Company, and (iii) such other information as may be

                                       12
<PAGE>

reasonably requested in availing any Holder of any rule or regulation of the
Commission which permits the selling of any such securities without registration
or pursuant to such form.

      SECTION 2.6 "MARKET STAND-OFF" AGREEMENT. In connection with any
underwritten public offering of the Company's Common Stock, the Investors and
the Stockholders (including any Transferee) if requested in good faith by the
Company and the managing underwriter of the Company's securities, shall agree
not to, directly or indirectly, offer, sell, pledge, contract to sell (including
any short sale), grant any option to purchase or otherwise dispose of any
securities of the Company held by them (except for any securities sold pursuant
to such registration statement) or enter into any Hedging Transaction (as
defined below) relating to any securities of the Company for a period not to
exceed one hundred eighty (180) days (in the case of the Company's initial
underwritten public offering) or ninety (90) days (in the case of any
underwritten public offering other than the Company's initial underwritten
public offering) following the effective date of the applicable registration
statement as agreed to by such parties; provided, that the Investors'
obligations under this Section 2.6 shall be conditioned upon (a) all officers
and directors of the Company entering into similar agreements with the Company
and such managing underwriter and (b) the Company using all reasonable effort to
obtain similar agreements from all holders of one percent (1%) or more of the
outstanding capital stock of the Company; and provided, further, that such
periods may be extended for up to an additional twenty (20) days to permit the
underwriters to issue a research report in compliance with the National
Association of Security Dealers Rule 2711(f)(4). For purposes of this Section
2.6, "Hedging Transaction" means any short sale (whether or not against the box)
or any purchase, sale or grant of any right (including without limitation, any
put or call option) with respect to any security (other than a broad-based
market basket or index) that includes, relates to or derives any significant
part of its value from the Company's Common Stock.

      SECTION 2.7 TRANSFERABILITY OF REGISTRATION RIGHTS. The registration
rights set forth in this Agreement are transferable (i) to each Transferee of
Registrable Securities who receives at least one hundred thirty five thousand
(135,000) shares of Registrable Securities, provided, that such transferee's
activities, products and services are not competitive in any material respect
with activities, products or services of the Company as reasonably determined by
the Board of Directors or (ii) to any partner, member or employee of such Holder
or a general partner or managing member of such Holder or an Affiliate of such
Holder. Each subsequent holder of Registrable Securities must consent in writing
to be bound by the terms and conditions of this Agreement and written notice of
any such transfer must be given to the Company in order for such Holder to
acquire the rights granted pursuant to this Agreement and, in such event, each
such subsequent Holder who is a transferee of an Investor shall be deemed an
Investor for all purposes of this Agreement.

                                   ARTICLE III

                                     GENERAL

      SECTION 3.1 AMENDMENTS, WAIVERS AND CONSENTS. For the purposes of this
Agreement, no course of dealing between or among any of the parties hereto and
no delay on the part of any party hereto in exercising any rights hereunder or
thereunder shall operate as a waiver

                                       13
<PAGE>

of the rights hereof and thereof. The following shall be sufficient to effect
any amendment, waiver or modification of this Agreement: the written consent of
Investors holding a majority of the Registrable Securities then held by all
Investors, the Company and Stockholders holding at least a majority of the
outstanding shares of Registrable Securities then held by the Stockholders;
provided, that any party may waive any provision hereof with respect to such
party intended for its benefit by written consent; provided, further, that the
provisions contained in Article II may be amended, modified or waived only with
the added consent of the holders of not less than a majority of the Registrable
Securities then outstanding , provided, however, that any such amendment,
modification or waiver that disproportionately (other than as a result of
disproportionate stockholdings) and adversely affects any Investor or
Stockholder shall require the prior written consent of such Investor or
Stockholder, it being understood and agreed that the grant of registration
rights to third parties shall not be deemed to disproportionately or adversely
affect any particular Investor or Stockholder; and provided, further, that the
provisions of Section 2.1 may be amended modified or waived only with the added
consent of those Founders holding a majority of Registrable Securities then held
by the Founders; and provided still further, that the provisions of this Section
3.1 may be amended, modified or waived only with the consent of (i) holders of
not less than a majority of the Registrable Securities then outstanding which
were initially held by Hasbro, (ii) holders of not less than a majority of the
Registrable Securities then outstanding which were initially held by Acer, (iii)
holders of not less than a majority of the Registrable Securities then
outstanding which were initially held by FAC, (iv) holders of not less than a
majority of the Registrable Securities then outstanding which were initially
held by the Series C Investors, (v) holders of not less than a majority of the
Registrable Securities then outstanding which were initially held by the Series
D Investors, (vi) holders of not less than a majority of the Registrable
Securities then outstanding which were initially held by the Series E Investors,
(vii) holders of not less than a majority of the Registrable Securities then
outstanding which were initially held by the Series F Investors, (viii) the
Company and (ix) Stockholders holding at least a majority of the outstanding
shares of Registrable Securities then held by all Stockholders. Notwithstanding
anything in this Agreement to the contrary, the Company shall amend (which
amendments shall not require the consents of the holders of Registrable
Securities or any particular Investor or Stockholder in accordance with this
Section 3.1) Schedule I hereto to include each additional holder of Series F
Preferred Stock executing a Counterpart Signature Page, any Additional
Stockholder or to reflect any permitted transfer pursuant to Section 2.7.

      SECTION 3.2 LEGEND ON SECURITIES. The Company, each of the Investors and
each of the Stockholders acknowledge and agree that substantially the following
legend shall be typed on each certificate evidencing any of the securities
issued hereunder held at any time by an Investor or a Stockholders:

                                       14
<PAGE>

      THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
      SECURITIES ACT OF 1933 (THE "ACT"), OR ANY STATE SECURITIES OR BLUE SKY
      LAWS AND MAY NOT BE OFFERED, SOLD, TRANSFERRED, MORTGAGED, PLEDGED,
      HYPOTHECATED OR OTHERWISE ASSIGNED EXCEPT (1) PURSUANT TO A REGISTRATION
      STATEMENT WITH RESPECT TO SUCH SECURITIES WHICH IS EFFECTIVE UNDER THE ACT
      OR (2) PURSUANT TO AN AVAILABLE EXEMPTION FROM REGISTRATION UNDER THE ACT
      RELATING TO THE DISPOSITION OF SECURITIES AND (3) IN ACCORDANCE WITH
      APPLICABLE STATE SECURITIES AND BLUE SKY LAWS.

      SECTION 3.3 GOVERNING LAW. This Agreement shall be deemed to be a contract
made under, and shall be construed in accordance with, the laws of The
Commonwealth of Massachusetts, without giving effect to conflict of laws
principles thereof.

      SECTION 3.4 SECTION HEADINGS. The descriptive headings in this Agreement
have been inserted for convenience only and shall not be deemed to limit or
otherwise affect the construction of any provision thereof or hereof.

      SECTION 3.5 COUNTERPARTS. This Agreement may be executed simultaneously in
any number of counterparts, each of which when so executed and delivered shall
be taken to be an original; but such counterparts shall together constitute but
one and the same document.

      SECTION 3.6 NOTICES AND DEMANDS. Any notice or demand which is required or
provided to be given under this Agreement shall be deemed to have been
sufficiently given and received for all purposes when delivered by hand, or
facsimile, or five days after being sent by certified or registered mail,
postage and charges prepaid, return receipt requested, or two days after being
sent by overnight delivery providing receipt of delivery, to the following
addresses: if to the Company or the Founders, at the addresses set forth on the
signature pages hereto, or at any other address designated by the Company or the
Founders, respectively, to the Investors and the other parties hereto in
writing; if to the Investors, at the mailing address as shown on the signature
page hereto, or at any other address designated by an Investor to the Company in
writing; and if to any other the Stockholders, at the mailing address for notice
as set forth in the books and records of the Company.

      SECTION 3.7 REMEDIES; SEVERABILITY. It is specifically understood and
agreed that any breach of the provisions of this Agreement by any Person subject
hereto will result in irreparable injury to the other parties hereto, that the
remedy at law alone will be an inadequate remedy for such breach, and that, in
addition to any other remedies which they may have, such other parties may
enforce their respective rights by actions for specific performance (to the
extent permitted by law). Whenever possible, each provision of this Agreement
shall be interpreted in such a manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be deemed
prohibited or invalid under such applicable law, such provision shall be
ineffective to the extent of such prohibition or invalidity, and such
prohibition or invalidity shall not invalidate the remainder of such provision
or the other provisions of this Agreement.

                                       15
<PAGE>

      SECTION 3.8 INTEGRATION. This Agreement, including the exhibits, documents
and instruments referred to herein or therein, constitutes the entire agreement,
and supersedes all other prior agreements and understandings, both written and
oral, among the parties with respect to the subject matter hereof. Without
limiting the foregoing, this Fifth Amended and Restated Registration Rights
Agreement amends and supersedes the Prior Agreement in its entirety.

      SECTION 3.9 ADJUSTMENT. All references to share amounts and prices herein
shall be equitably adjusted to reflect any stock split, combination,
reorganization, recapitalization, reclassification, stock distribution, stock
dividend or similar event affecting the capital stock of the Company.

                            [SIGNATURE PAGE FOLLOWS]

                                       16
<PAGE>

      IN WITNESS WHEREOF, the parties have executed this Fifth Amended and
Restated Registration Rights Agreement as of the date first above written.

                              COMPANY:

                              IROBOT CORPORATION

                              By: /s/ Helen Greiner
                                 ---------------------------------------
                                 Helen Greiner, President
                                 63 South Ave.
                                 Burlington, Massachusetts 01803-4903

                              FOUNDERS:

                              /s/ Rodney Brooks
                              -----------------------------------------
                              Rodney Brooks
                              31 Hillside Road
                              Lincoln, MA 01773

                              /s/ Colin M. Angle
                              -----------------------------------------
                              Colin M. Angle
                              41 Russell Street
                              Somerville, MA 02144

                              /s/ Helen Greiner
                              -----------------------------------------
                              Helen Greiner
                              11 Gage Road
                              Wayland, MA 01778

                              /s/ M. David Adler
                              -----------------------------------------
                              M. David Adler
                              33 Dunbar Street
                              Sharon, MA 02067

                              /s/ Grinnell More
                              -----------------------------------------
                              Grinnell More
                              672 Old Revolutionary Road
                              Temple, NH 03804

<PAGE>

                              INVESTORS:

                              EXPLORE HOLDINGS L.L.C

                              By: /s/ Elizabeth Korrell
                                 ---------------------------------------
                                 Elizabeth Korrell
                                 Manager

                              TRIDENT CAPITAL FUND-V, L.P.

                              TRIDENT CAPITAL FUND-V AFFILIATES FUND, L.P.

                              TRIDENT CAPITAL FUND-V AFFILIATES FUND (Q), L.P.

                              TRIDENT CAPITAL FUND-V PRINCIPALS FUND, L.P.

                              TRIDENT CAPITAL PARALLEL FUND-V, C.V.

                              Executed on behalf of the foregoing funds by the
                              undersigned, as an authorized signatory of the
                              respective general partner of each such fund:

                              /s/ Peter Meekin
                              -------------------------------------------
                                      (signature)

                              Peter Meekin
                              -------------------------------------------
                                      (print name)

                              FENWAY PARTNERS CAPITAL FUND II, L.P.
                              FPIP TRUST, LLC
                              FPIP, LLC

                              By: Fenway Partners II, LLC, its general partner

                              By: /s/ [Illegible]
                                 ---------------------------------------
                                 Name:
                                 Title: Managing Director

                              By: /s/ [Illegible]
                                 ---------------------------------------
                                 Name:
                                 Title: Managing Director

<PAGE>

                              ROBOTIC VENTURES FUND I, L.P.

                              By:
                                 -----------------------------------------
                                 Name: Brian Friedman
                                 Title: Managing Director

                              HASBRO, INC.

                              By: /s/ David D.R. Hargreaves
                                 -----------------------------------------
                                 Name:  David D.R. Hargreaves
                                 Title: C.F.O.

                              ACER TECHNOLOGY VENTURE FUND L.P.

                              By: Acer Technology Ventures
                                  Management LLC, its General Partner

                              By: /s/ James C. Lu
                                 -----------------------------------------
                              Name:  James C. Lu
                              Title: Managing Director

                              IP FUND ONE, L.P.

                              By: Acer Technology Ventures America LLC,
                                  its General Partner

                              By: [illegible]
                                 -----------------------------------------
                                 Name:
                                 Title:

                              FIRST ALBANY COMPANIES, INC.

                              By: /s/ George McNamee
                                 -----------------------------------------
                                 George McNamee, Chairman

<PAGE>

                              FIRST ALBANY PRIVATE FUND 1999 L.L.C.

                              By: FAC Management Corp., as Managing Member

                              By: /s/ Stephen P. Wink
                                 --------------------------------------
                                 Name:  Stephen P. Wink
                                 Title: VP

                              FIRST ALBANY TECHNOLOGY VENTURES

                              By: FAC Management Corp., as Managing Member

                              By:
                                 --------------------------------------
                                 Name:
                                 Title:

                              FA TECHNOLOGY VENTURES, L.P

                              By: FATV GP LLC, its General Partner

                              By: /s/ George McNamee
                                 ---------------------------------------
                                  Name:  George McNamee
                                  Manager

                              FA TECHNOLOGY MANAGERS LLC

                              By: FATV GP LLC, its Managing Member

                              By: /s/ George McNamee
                                 ---------------------------------------
                                  Name:  George McNamee
                                  Manager

                              FIRST ALBANY PRIVATE FUND 2004, LLC

                              By: FAC Management Corp., its Manager

                              By: /s/ Stephen P. Wink
                                 ---------------------------------------
                                  Name:  Stephen P. Wink
                                  Title: VP

<PAGE>

                              _________________________________________
                              Dan Kilmurray

                              ROBINSON CAPITAL, LLC

                              By:_________________________________________
                                 Ben Wegbreit, as Managing Member

                              /s/ David Sonenberg
                              _________________________________________
                              David Sonenberg

                              /s/ Lindalee A. Lawrence
                              _________________________________________
                              Lindalee A. Lawrence

                              /s/ William Contente
                              _________________________________________
                              William Contente

                              PAINTER HILL VENTURE FUND I, L.P.

                              By: /s/ Walter Fiederowicz
                                 _________________________________________
                                 Name: Walter Fiederowicz
                                 Title:

                              PAINTER HILL PARTNERS, LLC

                              By: /s/ Walter Fiederowicz
                                 _________________________________________
                                 Name: Walter Fiederowicz
                                 Title:

                              /s/ Michael F. Cronin
                              _________________________________________
                              Michael F. Cronin

                              /s/ Harold C. Smith
                              _________________________________________
                              Harold C. Smith

<PAGE>
                              /s/ Rosario S. Ilacqua
                              _________________________________________
                              Rosario S. Ilacqua

                              /s/ Vincent DellaVolpe
                              _________________________________________
                              Vincent DellaVolpe

                              /s/ Alan Goldberg
                              _________________________________________
                              Alan Goldberg

                              /s/ Giles W. McNamee
                              _________________________________________
                              Giles W. McNamee

                              FAC AS CUSTODIAN MCNAMEE GEORGE
                              FBO GEORGE MCNAMEE MCNAMEE KEOUGH PROFIT
                              SHARING

                              By:_________________________________________
                                 Name:
                                 Title:

                              /s/ Richard Feldman
                              _________________________________________
                              Richard Feldman

                              /s/ Timothy R. Welles
                              _________________________________________
                              Timothy R. Welles

                              /s/ Walter M. Fiederowicz
                              _________________________________________
                              Walter M. Fiederowicz

                              /s/ George C. McNamee
                              _________________________________________
                              George C. McNamee

                              /s/ Hugh Johnson
                              _________________________________________
                              Hugh Johnson

<PAGE>

                              /s/ Robert F. Campbell
                              -----------------------------------------
                              Robert F. Campbell

                              /s/ Beno Sternlicht
                              -----------------------------------------
                              Beno Sternlicht

                              /s/ Kenneth A. Mabbs
                              -----------------------------------------
                              Kenneth A. Mabbs

                              /s/ Stephen P. Wink
                              -----------------------------------------
                              Stephen P. Wink

                              /s/ Ullas Naik
                              -----------------------------------------
                              Ullas Naik

                              /s/ Michael R. Lindburg
                              -----------------------------------------
                              Michael R. Lindburg

                              /s/ Charles Schwager
                              -----------------------------------------
                              Charles Schwager

                              FBF, LLLP

                              By: /s/ Laura P. Barton
                                 --------------------------------------
                                 Name: Laura P. Barton
                                 Title: Managing General Partner

                              /s/ Arthur T. Murphy
                              -----------------------------------------
                              Arthur T. Murphy

                              /s/ Steven R. Jenkins
                              -----------------------------------------
                              Steven R. Jenkins

                              /s/ Brian Fernandez
                              -----------------------------------------
                              Brian Fernandez

<PAGE>

                              BOECKH CAPITAL CO. LTD.

                              By: /s/ William S. Power
                                 _________________________________________
                                 Name: William S. Power
                                 Title: Vice President, CFO

                              /s/ Frank Ingari
                              _________________________________________
                              Frank Ingari

<PAGE>

                                    EXHIBIT A

                               IROBOT CORPORATION
            FIFTH AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

                           Counterpart Signature Page

      Reference is hereby made to that certain Fifth Amended and Restated
Registration Rights Agreement dated as of November 10, 2004 (the "Registration
Rights Agreement"), by and among IROBOT CORPORATION, a Delaware corporation (the
"Company"), the Stockholders referenced therein and the Investors referenced
therein. Capitalized terms used as defined terms herein and not otherwise
defined shall have the meanings ascribed to such terms in the Registration
Rights Agreement.

      The undersigned is purchasing ___________ (________) shares of the Series
F Preferred Stock of the Company pursuant to a separate purchase agreement
between the Company and the undersigned. By execution of this Counterpart
Signature Page to the Registration Rights Agreement, the undersigned hereby (i)
acknowledges receipt of a copy of the Registration Rights Agreement, (ii) agrees
to be bound by and obtain the benefit of the rights and restrictions of the
Registration Rights Agreement as an Investor party thereto.

      The Company agrees that the undersigned shall be an "Investor" for all
purposes under the Registration Rights Agreement.

      IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
as an instrument under seal:

PURCHASER
(For Individual Investor)                  (For Investor Entities)

___________________________________        ______________________________
(Signature)                                (Print Name of Company)

______________________________             By:______________________________
(Print Name)                               (Signature)

                                           Name:____________________________

                                           Title:_____________________________
Accepted:

IROBOT CORPORATION

By:___________________________________
Name:
Title:
<PAGE>

                                    EXHIBIT B

                            Form of Joinder Agreement

      The undersigned hereby agrees, effective as of the date hereof, to become
a party to that certain Fifth Amended and Restated Registration Rights Agreement
(the "Agreement") dated as of November ____, 2004 by and among iRobot
Corporation (the "Company") and the other parties named therein and for all
purposes of the Agreement, the undersigned shall be included within the term
Stockholder (each as defined in the Agreement). The address and facsimile number
to which notices may be sent to the undersigned is as follows:

________________________________________________________________________________

Facsimile No.____________________.

                                                  _____________________________
                                                  Name:

Accepted:

IROBOT CORPORATION

By:_______________________________
Name:
Title:<PAGE>

                                                                    EXHIBIT 10.4

AMENDED AND RESTATED
                               1994 STOCK PLAN OF

                               IROBOT CORPORATION

SECTION 1. ESTABLISHMENT AND PURPOSE.

      The purpose of this Plan is to amend and restate in its entirety the 1994
Stock Option Plan of the Company. The Plan is designed to offer selected
employees, directors and consultants an opportunity to acquire a proprietary
interest in the success of the Company, or to increase such interest, by
purchasing Shares of the Company's Common Stock. The Plan provides both for the.
direct award or sale of Shares and for the grant of Options to purchase Shares
Options granted under the Plan may include Nonstatutory options as well as ISOs
intended to qualify under section 422 of the Code.

SECTION 2. DEFINITIONS.

      (a) "Board of Directors" shall mean the Board of Directors of the Company,
as constituted from time to time.

      (b) "Code" shall mean the Internal Revenue Code of 1986, as amended from
time to time.

      (c) "Committee" shall mean a committee of the Board of Directors, as
described in Section 3(a).

      (d) "Company" shall mean iRobot Corporation, a Delaware corporation.

      (e) "Employee" shall mean (i) any employee of the Company or of a
Subsidiary as determined in accordance with the provisions of Treasury
Regulation Section 1 421-7(h) under the Code or any successor regulations
thereto, (ii) a member of the Board of Directors, (iii) an independent
contractor who performs services for the Company or a Subsidiary, and (iv) any
individual who is employed by any partnership in which the Company has a
substantial partnership interest Service as a member of the Board of Directors
or as an independent contractor shall be considered employment for all purposes
of the Plan except the second sentence of Section 4(a).

<PAGE>

      (f) "Exercise Price" shall mean the amount for which one Share may be
purchased upon exercise of an Option, as specified by the Committee in the
applicable Stock Option Agreement.

      (g) "Fair Market Value" shall mean the fair market value of a Share, as
determined by the Committee in good faith Such determination shall be conclusive
and binding on all persons.

      (h) "ISO" shall mean an employee incentive stock option described in
section 422(b) of the Code.

      (i) "Nonstatutory Option" shall mean an employee stock option not
described in section 422(b) or section 423(b) of the Code.

      (j) "Offeree" shall mean an individual to whom the Committee has offered
the right to acquire Shares under the Plan (other than upon exercise of an
Option).

      (k) "Option" shall mean an ISO or Nonstatutory Option granted under the
Plan and entitling the holder to purchase Shares.

      (l) "Optionee" shall mean an individual who holds an Option.

      (m) "Plan" shall mean this Amended and Restated 1994 Stock Plan of iRobot
Corporation.

      (n) "Purchase Price" shall mean the consideration for which one Share may
be acquired under the Plan (other than upon exercise of an Option), as specified
by the Committee.

      (o) "Service" shall mean service as an Employee.

      (p) "Share" shall mean one share of Stock, as adjusted in accordance with
Section 9 (if applicable).

      (q) "Stock" shall mean the Common Stock of the Company.

      (r) "Stock Option Agreement" shall mean the agreement between the Company
and an Optionee which contains the terms, conditions and restrictions pertaining
to his Option.

      (s) "Stock Purchase Agreement" shall mean the agreement between the
Company and an Offeree who acquires Shares under the Plan which contains the
terms, conditions and restrictions pertaining to the acquisition of such Shares.

                                      -2-
<PAGE>

      (t)   "Subsidiary" shall mean any corporation, if the Company and/or one
or more other Subsidiaries own not less than 50 percent of the total combined
voting power of all classes of outstanding stock of such corporation. A
corporation that attains the status of a Subsidiary on a date after the adoption
of the Plan shall be considered a Subsidiary commencing as of such date.

      (u)   "Total and Permanent Disability" shall mean that the Optionee is
unable to engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which can be expected to result in
death or which has lasted, or can be expected to last, for a continuous period
of not less than six months.

SECTION 3. ADMINISTRATION.

      (a)   Committee Membership. The Plan shall be administered by the
Committee, which shall consist of three members of the Board of Directors The
members of the Committee shall be appointed by the Board of Directors If no
Committee has been appointed, the entire Board of Directors shall constitute
the Committee.

      (b)   Committee Procedures. The Board of Directors shall designate one of
the members of the Committee as chairman. The Committee may hold meetings at
such times and places as it shall determine. The acts of a majority of the
Committee members present at meetings at which a quorum exists, or acts reduced
to or approved in writing by all Committee members, shall be valid acts of the
Committee.

      (c)   Committee Responsibilities. Subject to the provisions of the Plan,
the Committee shall have full authority and discretion to take the following
actions.

            (i) To interpret the Plan and to apply its provisions,

            (ii) To adopt, amend or rescind rules, procedures and forms relating
      to the Plan,

            (iii) To authorize any person to execute, on behalf of the Company,
      any instrument required to carry out the purposes of the Plan,

                                      -3-
<PAGE>

            (iv)  To determine when Shares are to be awarded or offered for sale
      and when Options are to be granted under the Plan,

            (v)   To select the Offerees and Optionees,

            (vi)  To determine the number of Shares to be offered to each
      Offeree or to be made subject to each Option,

            (vii) To prescribe the terms and conditions of each award or sale of
      Shares, including (without limitation) the Purchase Price, and to specify
      the provisions of the Stock Purchase Agreement relating to such award or
      sale,

            (viii) To prescribe the terms and conditions of each Option,
      including (without limitation) the Exercise Price, to determine whether
      such Option is to be classified as an ISO or as a Nonstatutory Option, and
      to specify the provisions of the Stock Option Agreement relating to such
      Option,

            (ix)  To amend any outstanding Stock Purchase Agreement or Stock
      Option Agreement, subject to applicable legal restrictions and to the
      consent of the Offeree or Optionee who entered into such agreement, and

            (x) To take any other actions deemed necessary or advisable for the
      administration of the Plan.

All decisions, interpretations and other actions of the Committee shall be final
and binding on all Offerees, all Optionees, and all persons deriving their
rights from an Offeree or Optionee. No member of the Committee shall be liable
for any action that he has taken or has failed to take in good faith with
respect to the Plan, any Option or any right to acquire Shares under the Plan.

      (d)   Financial Reports. Not less often than annually, the Company shall
furnish to Optionees and Offerees reports of its financial condition, unless
such Optionees and Offerees have access to equivalent information through their
employment. Such reports need not be audited.

                                      -4-
<PAGE>

SECTION 4. ELIGIBILITY.

      (a)   General Rule. Only Employees shall be eligible for designation as
Optionees or Offerees by the Committee. In addition, only individuals who are
employees of the Company or of a Subsidiary as determined in accordance with the
provisions of Treasury Regulation Section 1.421-7(h) under the Code or any
successor regulations thereto shall be eligible for the grant of ISOs.

      (b)   Ten-Percent Shareholders. An Employee who owns more than 10 percent
of the total combined voting power of all classes of outstanding stock of the
Company or any of its Subsidiaries shall not be eligible for designation as an
Optionee of an ISO unless (i) the Exercise Price is at least 110 percent of the
Fair Market Value of a Share on the date of grant, and (ii) such ISO by its
terms is not exercisable after the expiration of five years from the date of
grant.

      (c)   Attribution Rules. For purposes of Subsection (b) above, in
determining stock ownership, an Employee shall be deemed to own the stock owned,
directly or indirectly, by or for his brothers and sisters (whether by the whole
or half blood), spouse, ancestors and lineal descendants. Stock owned, directly
or indirectly, by or for a corporation, partnership, estate or trust shall be
deemed to be owned proportionately by or for its shareholders, partners or
beneficiaries. Stock with respect to which such Employee holds an option shall
not be counted.

      (d)   Outstanding Stock. For purposes of Subsection (b) above,
"outstanding stock" shall include all stock actually issued and outstanding
immediately after the grant. "Outstanding stock" shall not include shares
authorized for issuance under outstanding options held by the Employee or by any
other person.

SECTION 5. STOCK SUBJECT TO PLAN.

      (a)   Basic Limitation. Shares offered under the Plan shall be authorized
but unissued Shares or shares of Stock reacquired in any manner. The aggregate
number of Shares which may be issued under the Plan (upon exercise of Options or
other rights to acquire Shares) shall not exceed 8,785,465 Shares, subject to
adjustment.

                                      -5-
<PAGE>

pursuant to Section 9. The number of Shares which are subject to Options or
other rights outstanding at any time under the Plan shall not exceed the number
of Shares which then remain available for issuance under the Plan. The Company,
during the term of the Plan, shall at all times reserve and keep available
sufficient Shares to satisfy the requirements of the Plan.

      (b)   Additional Shares. In the event that any outstanding Option or other
right for any reason expires or is cancelled or otherwise terminated, the Shares
allocable to the unexercised portion of such Option or other right shall again
be available for issuance under the Plan. In the event that Shares are
reacquired by the Company pursuant to a forfeiture provision, a right of
repurchase, a right of first refusal or a transaction under Section 8(b), such
Shares shall again be available for the issuance under the Plan, provided that
Shares that were acquired pursuant to the exercise of an Option which are
subsequently reacquired by the Company shall not be available for issuance
pursuant to the exercise of another Option (except as specifically provided in
Section 5(a)) and provided further that, the cumulative number of such Shares
that are available for reissuance under the Plan will not exceed 8,785,465
Shares.

      (c)   Per-Participant. Limit Subject to adjustment under Section 9, no
Employee may receive rights to acquire Shares under the Plan (whether by way of
Option or otherwise) during any one fiscal year that exceeds 5,725,000 Shares.

SECTION 6. TERMS AND CONDITIONS OF AWARDS OR SALES.

      (a)   Stock Purchase Agreement. Each award or sale of Shares under the
Plan (other than upon exercise of an Option) shall be evidenced by a Stock
Purchase Agreement between the Offeree and the Company Such award or sale shall
be subject to all applicable terms and conditions of the Plan and may be subject
to any other terms and conditions which are not inconsistent with the Plan and
which the Committee deems appropriate for inclusion in a Stock Purchase
Agreement. The provisions of the various Stock Purchase Agreements entered into
under the Plan need not be identical.

                                      -6-
<PAGE>

      (b)   Duration of Offers and Nontransferability of Rights. Any right to
acquire Shares under the Plan (other than an Option) shall automatically expire
if not exercised by the Offeree within 30 days after the grant of such right
was communicated to him by the Committee. Such right shall not be transferable
and shall be exercisable only by the Offeree to whom such right was granted.

      (c)   Purchase Price. The Purchase Price of Shares to be offered under the
Plan shall be determined by the Committee, in its sole and absolute discretion,
and may be less than, equal to, or greater than the Fair Market Value of such
Shares but in no event shall be less than the par value of such Shares. The
Purchase Price shall be payable in a form described in Section 8.

      (d)   Withholding Taxes. As a condition to the award or purchase of
Shares,the Offeree shall make such arrangements as the Committee may require for
the satisfaction of any federal, state or local withholding tax obligations that
may arise in connection with such award or purchase.

      (e)   Restrictions on Transfer of Shares. Any Shares awarded or sold under
the Plan shall be subject to such special forfeiture, conditions, rights of
repurchase, rights of first refusal and other transfer restrictions as the
Committee may determine. Such restrictions shall be set forth in the applicable
Stock Purchase Agreement and shall apply in addition to any general restrictions
that may apply to all holders of Shares. Any service-based vesting conditions
shall not be less rapid than the schedule set forth in Section 7(e).

SECTION 7. TERMS AND CONDITIONS OF OPTIONS.

      (a)   Stock Option Agreement. Each grant of an Option under the Plan shall
be evidenced by a Stock Option Agreement between the Optionee and the Company
Such Option shall be subject to all applicable terms and conditions of the Plan
and may be subject to any other terms and conditions which are not inconsistent
with the Plan and which the Committee deems appropriate for inclusion in a
Stock Option Agreement. The provisions of the various Stock Option Agreements
entered into under the Plan need not be identical.

                                      -7-
<PAGE>
 (b)   Number of Shares. Each Stock Option Agreement shall specify the number of
Shares that are subject to the Option and shall provide for the adjustment of
such number in accordance with Section 9. The Stock Option Agreement shall also
specify whether the Option is an ISO or a Nonstatutory Option. In no event shall
the aggregate Fair Market Value of Stock (determined at the time an ISO is
granted) for which ISOs granted to any Employee are exercisable for the first
time by such Employee during any calendar year (under all stock option plans of
the Company and any Subsidiary) exceed One Hundred Thousand Dollars ($100,000),
provided, however, that this limitation shall have no force or effect if its
inclusion in the Plan is not necessary for Options issued as ISOs to qualify as
incentive stock options within the meaning of Section 422 of the Code. Any
Option which would, but for its failure to satisfy the foregoing restriction,
qualify as an ISO shall nevertheless be a valid Option, but to the extent of
such failure it shall be deemed to be a Nonstatutory Option.

      (c)   Exercise Price. Each Stock Option Agreement shall specify the
Exercise Price. The Exercise Price of an ISO shall not be less than 100 percent
of the Fair Market Value of a Share on the date of grant, except as otherwise
provided in Section 4(b). The Exercise Price of a Nonstatutory option shall be
determined by the Committee, in its sole and absolute discretion, and may be
less than, equal to, or greater than the Fair Market Value of a Share on the
date of grant. The Exercise Price shall be payable in a form described in
Section 8.

      (d)   Withholding Taxes. As a condition to the exercise of a Option, the
Optionee shall make such arrangements as the Committee may require for the
satisfaction of any federal, state or local withholding tax obligations that may
arise in connection with such exercise. The Optionee shall also make such
arrangements as the Committee may require for the satisfaction of any federal,
state or local withholding tax obligations that may arise in connection with the
disposition of Shares acquired by exercising an Option.

                                      -8-
<PAGE>

      (e)   Exercisability and Term. Each Stock Option Agreement shall specify
the date when all or any installment of the Option is to become exercisable. An
Option shall become exercisable at least as rapidly as set forth in the
following schedule:

<TABLE>
<CAPTION>
Anniversary of            Minimum Percentage
Date of Grant                Exercisable
--------------            ------------------
<S>                       <C>
    First                         20%

    Second                        40%

    Third                         60%

    Fourth                        80%

    Fifth                        100%
</TABLE>

Subject to the preceding sentence, the vesting of any Option shall be determined
by the Committee at its sole discretion. The Stock Option Agreement shall also
specify the term of the Option. The term shall not exceed 10 years from the date
of grant, except as otherwise provided in Section 4(b). Subject to the preceding
sentence, the Committee at its sole discretion shall determine when an Option is
to expire.

      (f)   Nontransferability. During an Optionee's lifetime, his Option(s)
shall be exercisable only by him and shall not be transferable. In the event of
an Optionee's death, his Option(s) shall not be transferable other than by will
or by the laws of descent and distribution.

      (g)   Termination of Service (Except by Death). If an Optionee's Service
terminates for any reason other than his death, then his Option(s) shall expire
on the earliest of the following occasions:

            (i)   The expiration date determined pursuant to Subsection(e)
      above,

            (ii)  The date 60 days after the termination of his Service for any
      reason other than Total and Permanent Disability, or

                                      -9-
<PAGE>

            (iii) The date six months after the termination of his Service by
      reason of Total and Permanent Disability.

The Optionee may exercise all or part of his Option(s) at any time before the
expiration of such Option(s) under the preceding sentence, but only to the
extent that such Option(s) had become exercisable before his Service terminated
or became exercisable as a result of the termination. The balance of such
Option(s) shall lapse when the Optionee's Service terminates. In the event that
the Optionee dies after the termination of his Service but before the expiration
of his Option(s), all or part of such Option(s) may be exercised (prior to
expiration) by the executors or administrators of the Optionee's estate or by
any person who has acquired such Option(s) directly from him by bequest or
inheritance, but only to the extent that such Option(s) had become exercisable
before his Service terminated or became exercisable as a result of the
termination.

      (h)   Leaves of Absence. For purposes of Subsection (g) above, Service
shall be deemed to continue while the Optionee is on military leave, sick leave
or other bona fide leave of absence (as determined by the Committee). The
fore going notwithstanding, in the case of an ISO granted under the Plan,
Service shall not be deemed to continue beyond the first 90 days of such leave,
unless the Optionee's reemployment rights are guaranteed by statute or by
contract.

      (i)   Death of Optionee. If an Optionee dies while he is in Service, then
his Option(s) shall expire on the earlier of the following dates:

            (i)   The expiration date determined pursuant to Subsection (e)
      above, or

            (ii)  The date six months after his death.

All or part of the Optionee's Option(s) may be exercised at any time before the
expiration of such Option(s) under the preceding sentence by the executors or
administrators of his estate or by any person who has acquired Such Option(s)
directly from him by bequest or inheritance, but only to the extent that such
Option(s) had

                                      -10-
<PAGE>

become exercisable before his death or became exercisable as a result of his
death. The balance of such Option(s) shall lapse when the Optionee dies.

      (j)   No Rights as a Shareholder. An Optionee, or a transferee of an
Optionee, shall have no rights as a shareholder with respect to any Shares
covered by his Option until the date of the issuance of a stock certificate for
such Shares. No adjustments shall be made, except as provided in Section 9.

      (k)   Modification, Extension and Renewal of Options. Within the
limitations of the Plan, the Committee may modify, extend or renew outstanding
Options or may accept the cancellation of outstanding Options (to the extent not
previously exercised) in return for the grant of new Options at the same or a
different price. The foregoing notwithstanding, no modification of an Option
shall, without the consent of the Optionee, impair his rights or increase his
obligations under such Option.

      (1)   Restrictions on Transfer of Shares. Any Shares issued upon exercise
of an Option shall be subject to such special forfeiture conditions, rights of
repurchase, rights of first refusal and other transfer restrictions as the
Committee may determine. Such restrictions shall be set forth in the applicable
Stock Option Agreement and shall apply in addition to any general restrictions
that may apply to all holders of Shares. Any service-based vesting conditions
shall not be less rapid than the schedule set forth in Subsection (e) above.

SECTION 8. PAYMENT FOR SHARES

      (a)   General Rule. The entire Purchase Price or Exercise Price of Shares
issued under the Plan shall be payable in cash or check payable to the order of
the Company at the time when such Shares are purchased, except as provided in
Subsections (b), (c), (d) and (e) below.

      (b)   Surrender of Stock. To the extent that a Stock Option Agreement so
provides, payment may be made all or in part with Shares which have already been
owned by the Optionee or his representative for more than 12 months and which
are surrendered to the Company in good form for transfer. Such Shares shall be
valued at their Fair Market Value on the date when the new Shares are purchased
under the Plan.

                                      -11-
<PAGE>

      (c)   Services Rendered. At the discretion of the Committee, Shares may be
awarded under the Plan in consideration of services rendered to the Company or a
Subsidiary prior to the award. If Shares are awarded without the payment of a
Purchase Price in cash, the Committee shall make a determination (at the time of
the award) of the value of the services rendered by the Offeree and the
sufficiency of the consideration to meet the requirements of Section 6(c) and
applicable law.

      (d)   Full Recourse Note. At the discretion of the Committee, a portion of
the Purchase Price or Exercise Price of Shares issued under the Plan may be
payable by the issuance and delivery to the Company or a Subsidiary by the
Optionee or Offeree of a personal full recourse note of the Optionee or Offeree
bearing interest payable not less than annually at no less than 100% of the
lowest applicable Federal rate as determined in accordance with Section 1274(d)
of the Code, provided such note is secured by the Shares so purchased, provided
further that the Optionee or Offeree deliver to the Company cash or a check
payable to the order of the Company in an amount equal to the aggregate par
value of the Shares to be issued.

      (e)   Cashless Exercise. Only if the Stock is then publicly traded and
only in the case of the exercise of an Option, delivery of an irrevocable and
unconditional undertaking by a creditworthy broker to deliver promptly to the
Company sufficient funds to pay the Exercise Price of an Option, or delivery by
the Optionee 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 payable to the order of the Company sufficient to pay the Exercise Price
of an Option.

SECTION 9. ADJUSTMENT OF SHARES.

      (a)   General. In the event of a subdivision of the outstanding Stock, a
declaration of a dividend payable in Shares, a declaration of a dividend payable
in a form other than Shares in an amount that has a material effect on the value
of Shares, a combination or consolidation of the outstanding Stock (by
reclassification or otherwise) into a lesser number of Shares, a
recapitalization or a similar occurrence, the

                                      -12-
<PAGE>

Committee shall make appropriate adjustments in one or more of (i) the number of
Shares available for future grants under Section 5, (ii) the number of Shares
covered by each outstanding Option, or (iii) the Exercise Price under each
outstanding Option.

      (b) Mergers and Other Reorganizations. In the event that the Company is to
be consolidated with or acquired by another entity in a merger, sale of all or
substantially all of the Company's assets or otherwise, all outstanding Options
shall be subject to the agreement governing such transaction. Such agreement
shall provide (i) for the assumption of outstanding Options by the surviving
corporation or its parent or for its continuation by the Company (if the Company
is a surviving corporation), without the Optionees' consent, (ii) for the
acceleration of the exercisability of outstanding Options followed by their
cancellation if not exercised, without the Optionees' consent (and any such
cancellation shall not occur earlier than 30 days after such acceleration is
effective and the Optionees have been notified of such acceleration), (iii) for
a limited period of exercise of outstanding Options to the extent then
exercisable, without the Optionees' consent, upon notice to the Optionees,
followed by its cancellation if not exercised (and any such cancellation shall
not occur earlier than 30 days after such limited period of exercise is
effective and the Optionees have been notified of such), or (iv) for the
termination of outstanding Options in exchange for a cash payment equal to the
difference between the Fair Market Value of one Share (if greater than the
Exercise Price) and the Exercise Price multiplied by the number of Shares
issuable upon exercise of such outstanding Options, but only with the Optionees'
consent.

      (c) Dissolution or Liquidation. In the event of the proposed dissolution
or liquidation of the Company, all outstanding Options granted hereunder shall
terminate immediately prior to the consummation of such action or at such other
time and subject to such other conditions as shall be determined by the
Committee.

      (d) Reservation of Rights. Except as provided in this Section 9, an
Optionee or Offeree shall have no rights by reason of any subdivision or
consolidation of shares of stock of any class, the payment of any dividend or
any other increase or decrease in the number of shares of stock of any class.
Any issue by the Company of

                                      -13-
<PAGE>

shares of stock of any class, or securities convertible into shares of stock of
any class, shall not affect, and no adjustment by reason thereof shall be made
with respect to, the number or Exercise Price of the Shares subject to an
Option. The grant of an Option pursuant to the Plan shall not affect in any way
the right or power of the Company to make adjustments, reclassifications,
reorganizations or changes of its capital or business structure to merge or
consolidate or to dissolve, liquidate, sell or transfer all or any part of its
business or assets. Any shares of the capital stock of the Company issued or
issuable pursuant to the foregoing adjustments shall be subject to the same
restrictions imposed on the Options granted under the Plan and the Shares issued
or issuable upon exercise of such Options.

      (e) Fractional Shares. No fractional shares shall be issued under the Plan
and the Optionees shall receive from the Company cash in lieu of such fractional
shares.

SECTION 10. LEGAL REQUIREMENTS.

      (a) Securities Laws. Shares shall not be issued under the Plan unless the
issuance and delivery of such Shares comply with (or are exempt from) all
applicable requirements of law, including (without limitation) the Securities
Act of 1933, as amended, the rules and regulations promulgated thereunder, state
securities laws and regulations, and the regulations of any stock exchange on
which the Company's securities may then be, listed.

      (b) S Corporation Status. In the event that the Company is an S
corporation," as defined in section 1361 (a) of the Code, Shares shall not be
issued under the Plan if the issuance or delivery of such Shares would cause the
Company to lose its status as an "S corporation".

SECTION 11. NO EMPLOYMENT RIGHTS.

      No provision of the Plan, nor any right or Option granted under the Plan,
shall be construed to give any person any right to become, to be treated as, or
to remain an Employee. The Company and its Subsidiaries reserve the right to
terminate any person's Service at any time and for any reason.

                                      -14-
<PAGE>

SECTION 12. DURATION AND AMENDMENTS, GOVERNING LAW, CONFIDENTIALITY.

      (a) Term of the Plan. The Plan, as set forth herein, shall become
effective on November 16, 1994 subject to the approval of the Company's
shareholders In the event that the shareholders fail to approve the Plan within
12 months after its adoption by the Board of Directors, any Option grants or
Stock awards already made shall be null and void, and no additional Option
grants or Stock awards shall be made after such date. The Plan shall terminate
automatically on November 16, 2004 and may be terminated on any earlier date
pursuant to Subsection (b) below.

      (b) Right to Amend or Terminate the Plan. The Board of Directors may
amend, suspend or terminate the Plan at any time and for any reason, provided,
however, that any amendment of the Plan which increases the number of Shares
available for issuance under the Plan (except as provided in Section 9), or
which materially changes the class of persons who are eligible for the grant of
ISOs, shall be subject to the approval of the Company's shareholders Shareholder
approval shall not be required for any other amendment of the Plan.

      (c) Effect of Amendment or Termination. No Shares shall be issued or sold
under the Plan after the termination thereof, except upon exercise of an Option
granted prior to such termination. The termination of the Plan, or any amendment
thereof, shall not affect any Share previously issued or any Option previously
granted under the Plan.

      (d) Governing Law. The Plan and all awards or sales of Shares or grants of
Options hereunder shall be governed and interpreted in accordance with the laws
of the State of Delaware, without regard to any applicable conflicts of law.

      (e) Confidentiality. Notwithstanding anything to the contrary in this Plan
or any Stock Purchase Agreement or Stock Option Agreement entered into under
this Plan, nothing shall in any way limit the ability of the Company or any
Offeree or Optionee to disclose to any person the tax treatment and tax
structure of any right to purchase Shares granted hereunder.

                                      -15-
<PAGE>

SECTION 13. EXECUTION.

      To record the adoption of the Plan, the Company has caused its authorized
officer to execute the same.

                                  IROBOT CORPORATION

                                  By /s/ Colin Angle
                                     --------------------------

                                  Title Chief Executive Officer

                                      -16-
<PAGE>

                               IROBOT CORPORATION

                          STOCK OPTION GRANT AGREEMENT

      THE OPTION GRANTED PURSUANT TO THIS INCENTIVE STOCK OPTION AGREEMENT (THE
"OPTION") AND THE SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE HEREOF HAVE
NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND MAY NOT BE PLEDGED, HYPOTHECATED, SOLD, TRANSFERRED OR
OTHERWISE DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR
THE OPTION OR THE SHARES UNDER THE SECURITIES ACT, OR AN OPINION OF COUNSEL,
WHICH IS SATISFACTORY TO THE CORPORATION AND ITS COUNSEL, THAT SUCH REGISTRATION
IS NOT REQUIRED.

                      1994 STOCK PLAN OF IROBOT CORPORATION

                        INCENTIVE STOCK OPTION AGREEMENT

      THIS AGREEMENT, entered into as of _______________________, 200__, is
between IROBOT CORPORATION, a Delaware corporation (the "Company"), and
____________________________________________ (the "Optionee").

                              W I T N E S S E T H:

      WHEREAS, the Company's Board of Directors has established the 1994 Stock
Plan of IRobot Corporation in order to provide selected directors, officers,
employees and consultants of the Company and its Subsidiaries with an
opportunity to acquire Common Stock of the Company; and

      WHEREAS, the Committee has determined that it would be in the best
interests of the Company and its shareholders to grant the Incentive Stock
Option described in this Agreement to the Optionee as an inducement to enter
into or remain in the service of the Company and as an incentive for
extraordinary efforts during such service;

      NOW, THEREFORE, for valuable consideration, the receipt and adequacy of
which is hereby acknowledged, the parties, intending to be legally bound hereby,
agree as follows:

SECTION 1. GRANT OF OPTION.

      (a) Option. On the terms and conditions stated below, the Company hereby
grants to the Optionee the option to purchase _________________________
( ________ ) Shares for the sum of [___________________________] ($[____]) per
share. It is understood and intended that this option shall qualify as an
Incentive Stock Option. Accordingly, the Optionee understands that in order to
obtain the beneficial tax treatment accorded an Incentive Stock Option, no sale
or other disposition may be made of any Shares acquired upon exercise of the
option within one (1) year after the day of the transfer of such Shares to the
Optionee, nor within two (2) years after the Date of Grant. If the Optionee
intends to dispose, or does dispose (whether by sale, exchange, gift, transfer
or otherwise), of any such Shares within either of said periods, he or she will
notify the Company in writing within ten (10) days after such disposition.

<PAGE>

      (b) Stock Plan. This option is granted pursuant to the Plan, a copy of
which the Optionee acknowledges having received and read. The provisions of the
Plan are incorporated into this Agreement by this reference.

      (c) Grant Condition. The granting of this option shall be subject to
receipt by the Company of the Company's current form of Invention and
Confidentiality Agreement, executed and delivered by the Optionee.

SECTION 2. NO TRANSFER OR ASSIGNMENT OF OPTION.

      Except as otherwise provided in this Agreement, this option and the rights
and privileges conferred hereby shall not be transferred, assigned, pledged or
hypothecated in any way (whether by operation of law or otherwise) and shall not
be subject to sale under execution, attachment or similar process. Upon any
attempt to transfer, assign, pledge, hypothecate or otherwise dispose of this
option, or of any right or privilege conferred hereby, contrary to the
provisions hereof, or upon any attempted sale under any execution, attachment or
similar process upon the rights and privileges conferred hereby, this option and
the rights and privileges conferred hereby shall immediately become null and
void.

SECTION 3. RIGHT TO EXERCISE.

      (a) Vesting. Subject to the conditions stated herein, the right to
exercise this option shall accrue in installments as follows provided the
Optionee has continued to be an Employee through any such applicable date:

<TABLE>
<CAPTION>
                                Percentage
                             Shares Exercisable
                             ------------------
<S>                          <C>
Date of Grant                         0%

First Anniversary of
Date of Grant                        20%

Second Anniversary of
Date of Grant                        40%

Third Anniversary of
Date of Grant                        60%

Fourth Anniversary of
Date of Grant                        80%

Fifth Anniversary of
Date of Grant                       100%
</TABLE>

                                      -2-
<PAGE>

      (b) Periods of Nonexercisability. Any other provision of this Agreement
notwithstanding, the Company shall have the right to designate one or more
periods of time, each of which shall not exceed 18 consecutive months in length,
during which this option shall not be exercisable if the Company determines (in
its sole discretion) that such limitation on exercise could in any way
facilitate a lessening of any restriction on transfer pursuant to the Securities
Act or any state securities laws with respect to any issuance of securities by
the Company, facilitate the registration or qualification of any securities by
the Company under the Securities Act or any state securities laws, or facilitate
the perfection of any exemption from the registration or qualification
requirements of the Securities Act or any applicable state securities laws for
the issuance or transfer of any securities. Such limitation on exercise shall
not alter the vesting of this option as set forth in Section 3(a) other than to
limit the periods during which this option shall be exercisable. The Optionee
shall be notified in writing of any such designation by the Company.

      (c) Shareholder Approval. Any other provision of this Agreement
notwithstanding, this option shall not be exercisable at any time prior to the
approval of the Plan by the holders of a majority of the outstanding stock of
the Company.

      (d) Termination Upon Breach of Certain Agreements. Notwithstanding the
foregoing, if, in the judgment of the Company, the Optionee, prior to the
expiration date of this option, materially violates the non-competition,
non-solicitaion, assignment of inventions or confidentiality provisions of any
employment contract, confidentiality and nondisclosure agreement or other
agreement between the Optionee and the Company, the right to exercise this
option shall terminate immediately upon written notice to the Optionee from the
Company describing such violation.

SECTION 4. EXERCISE PROCEDURES.

      (a) Notice of Exercise. The Optionee or the Optionee's representative may
exercise this option by giving written notice to the Secretary of the Company
pursuant to Section 12(d). The notice shall specify the election to exercise
this option, the number of Shares for which it is being exercised, and the form
of payment. The notice shall be signed by the person or persons exercising this
option. In the event that this option is being exercised by the representative
of the Optionee, the notice shall be accompanied by proof (satisfactory to the
Company) of the representative's right to exercise this option. The Optionee or
the Optionee's representative shall deliver to the Secretary of the Company, at
the time of giving the notice, payment in a form permissible under Section 5 for
the full amount of the Purchase Price.

      (b) Issuance of Shares. After receiving a proper notice of exercise, the
Company shall cause to be issued a certificate or certificates for the Shares as
to which this option has been exercised, registered in the name of the person
exercising this option (or in the names of such person and his or her spouse as
community property or as joint tenants with right of survivorship). The Company
shall cause such certificate or certificates to be delivered to or upon the
order of the person exercising this option.

                                      -3-
<PAGE>

SECTION 5. PAYMENT FOR STOCK

      The entire Purchase Price may be paid in U.S. dollars. Alternatively, all
or part of the Purchase Price may be paid by the surrender of Shares in good
form for transfer. Such Shares must have been owned for more than 12 months by
the Optionee or the Optionee's representative and must have a fair market value
(as determined by the Committee) on the date of exercise of this option which,
together with any amount paid in cash, is equal to the Purchase Price.

SECTION 6. TERM AND EXPIRATION.

      (a) Basic Term. This option shall in any event expire on the date 10 years
after the Date of Grant.

      (b) Termination of Service (Except by Death). If the Optionee's service as
an Employee terminates for any reason other than death, then this option shall
expire on the earliest of the following occasions:

            (i) The expiration date determined pursuant to Subsection (a) above;

            (ii) The date 60 days after the termination of the Optionee's
      service as an Employee for any reason other than Total and Permanent
      Disability; or

            (iii) The date six months after the termination of the Optionee's
      service as an Employee by reason of Total and Permanent Disability.

The Optionee may exercise all or part of this option at any time before its
expiration under the preceding sentence, but only to the extent that this option
had become exercisable before the Optionee's service terminated. The balance of
this option shall lapse when the Optionee's service as an Employee terminates.
In the event that the Optionee dies after the termination of service but before
the expiration of this option, all or part of this option may be exercised
(prior to expiration) by the executors or administrators of the Optionee's
estate or by any person who has acquired this option directly from the Optionee
by bequest or inheritance, but only to the extent that this option had become
exercisable before the Optionee's service terminated.

      (c) Death of Optionee. If the Optionee dies as an Employee, then this
option shall expire on the earlier of the following dates:

            (i) The expiration date determined pursuant to Subsection (a) above;
      or

            (ii) The date six months after the Optionee's death.

All or part of this option may be exercised at any time before its expiration
under the preceding sentence by the executors or administrators of the
Optionee's estate or by any person who has acquired this option directly from
the Optionee by bequest or inheritance, but only to the extent that this option
had become exercisable before the Optionee's death. The balance of this option
shall lapse when the Optionee dies.

                                      -4-
<PAGE>

      (d) Leaves of Absence. For purposes of this Section 6, the Employee
relationship shall be deemed to continue during any period when the Optionee is
on military leave, sick leave or other bona fide leave of absence (to be
determined in the sole discretion of the Committee). However, if the Optionee's
reemployment rights are not guaranteed by statute or by contract, then the
Employee relationship shall not be deemed to continue beyond the 90th day of
such period.

SECTION 7. THE COMPANY'S RIGHT OF FIRST REFUSAL

      (a) Right of First Refusal. In the event that the Optionee or a Transferee
proposes to sell, pledge or otherwise transfer to any person any Shares acquired
under this Agreement, or any interest in such Shares, the Company shall have the
Right of First Refusal with respect to such Shares. If the Optionee or
Transferee desires to transfer Shares acquired under this Agreement, the
Optionee or Transferee shall give a written Transfer Notice to the Company
describing fully the proposed transfer, including the number of Shares proposed
to be transferred, the proposed transfer price and the name and address of the
proposed Transferee. The Transfer Notice shall be signed both by the Optionee or
Transferee and by the proposed new Transferee and must constitute a binding
commitment of both parties to the transfer of the Shares. The Company shall have
the right to purchase the Shares on the terms of the proposal described in the
Transfer Notice (subject, however, to any change in such terms permitted under
Subsection (b) below) by delivery of a notice of exercise of the Right of First
Refusal within in 30 days after the date when the Transfer Notice was received
by the Company. The Company's rights under this Subsection (a) shall be freely
assignable, in whole or in part.

      (b) Transfer of Shares. If the Company fails to exercise its Right of
First Refusal within 30 days after the date when it received the Transfer
Notice, the Optionee or Transferee may, not later than 90 days following receipt
of the Transfer Notice by the Company, conclude a transfer of the Shares subject
to the Transfer Notice on the terms and conditions described in the Transfer
Notice. Any proposed transfer on terms and conditions different from those
described in the Transfer Notice, as well as any subsequent proposed transfer by
the Optionee or Transferee, shall again be subject to the Right of First Refusal
and shall require compliance with the procedure described in Subsection (a)
above. If the Company exercises its Right of First Refusal, the parties shall
consummate the sale of the Shares on the terms set forth in the Transfer Notice;
provided, however, that in the event the Transfer Notice provides that payment
for the Shares is to be made in a form other than lawful money paid at the time
of transfer, the Company shall have the option of paying for the Shares with
lawful money equal to the present value of the consideration described in the
Transfer Notice.

      (c) Binding Effect. The Company's Right of First Refusal shall inure to
the benefit of its successors and assigns and shall be binding upon any
Transferee of the Shares.

      (d) Termination of Right of First Refusal. Any other provision of this
Section 7 notwithstanding, in the event that Stock is listed on an established
stock exchange or is quoted regularly on the NASDAQ System at the time when the
Optionee or Transferee desires to transfer Shares, the Company shall have no
Right of First Refusal, and the Optionee or Transferee shall have no obligation
to comply with the procedures prescribed by Subsections (a), (b) and (c) above.

                                      -5-
<PAGE>

SECTION 8. RIGHT OF REPURCHASE.

      (a) Basic Repurchase Right. The Shares acquired under this Agreement shall
be Restricted Shares and shall be subject to the right (but not an obligation)
of repurchase by the Company. The Company's rights under this Subsection (a)
shall be freely assignable, in whole or in part.

      (b) Condition Precedent to Exercise. The Company's right of repurchase
shall be exercisable only during the 60-day period next following the later of
(i) the date when the Optionee ceases to be an Employee for any reason, with or
without cause, including (without limitation) death or disability, or (ii) the
date when the option was exercised by the Optionee, the executors or
administrators of the Optionee's estate or any person who has acquired the
option directly from the Optionee by bequest or inheritance.

      (c) Repurchase Cost. If the Company exercises its right to repurchase, it
shall pay the Optionee an amount equal to (1) the greater of (i) the price per
Share paid by the Optionee under Section 1(a) hereof, or (ii) Fair Market Value
at the time of repurchase multiplied by (2) the number of Restricted Shares to
be repurchased. The Company's right of repurchase shall terminate with respect
to Restricted Shares if the Stock is listed on an established stock exchange or
quoted regularly on the NASDAQ System.

      (d) Exercise of Repurchase Right. If the Company elects to exercise its
right of repurchase with respect to any Restricted Shares, it must exercise its
right of repurchase with respect to all Restricted Shares. The Company's right
of repurchase shall be exercisable only by written notice delivered to the
Optionee prior to the expiration of the 60-day period specified in Subsection
(b) above. The notice shall set forth the date on which the repurchase is to be
effected. Such date shall not be more than 30 days after the date of the notice.
The certificate(s) representing the Restricted Shares to be repurchased shall,
prior to the close of business on the date specified for the repurchase, be
delivered to the Secretary of the Company. Each certificate shall be properly
endorsed for transfer. The Company shall, concurrently with the receipt of such
certificate(s), pay to the Optionee the purchase price determined according to
Subsection (c) above. Payment shall be made in lawful money of the United States
of America. The Company's right of repurchase shall terminate with respect to
any Restricted Shares for which it has not been timely exercised pursuant to
this Subsection (d).

      (e) Cancellation of Shares. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the
consideration for the Restricted Shares to be repurchased in accordance with the
provisions of this Agreement, then after such time the person from whom such
Restricted Shares are to be repurchased shall no longer have any rights as a
holder of such Restricted Shares (other than the right to receive payment of
consideration in accordance with this Agreement). Such Restricted Shares shall
be deemed to have been repurchased in accordance with the applicable provisions
hereof, whether or not the certificate (s) therefor have been delivered as
required by this Agreement.

      (f) Additional Shares or Substituted Securities. In the event of the
declaration of a stock dividend, the declaration of any extraordinary dividend
payable in a form other than stock, a stock split, an adjustment in conversion
ratio, a recapitalization or a similar transaction affecting the Company's
outstanding securities without receipt of consideration, any new, substituted or
additional securities or other property (including money paid other than as an
ordinary cash dividend) that are by reason of

                                      -6-
<PAGE>

such transaction distributed with respect to any Restricted Shares or into which
such Restricted Shares thereby become convertible, shall immediately be subject
to the Company's right of repurchase. Appropriate adjustments to reflect the
distribution of such securities or property shall be made to the number and/or
class of the Restricted Shares. Appropriate adjustments shall also, after each
such transaction, be made to the price per share to be paid upon the exercise of
the right of repurchase in order to reflect any change in the Company's
outstanding securities effected without receipt of consideration therefor;
provided, however, that the aggregate purchase price payable for the Restricted
Shares shall remain the same.

      (g) Legends. In addition to the legends required by Section 10 (c), all
certificates representing Shares purchased under this Agreement shall be
endorsed with the following legend:

      "THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED,
      ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE
      TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER
      OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH
      AGREEMENT GRANTS CERTAIN REPURCHASE RIGHTS TO THE COMPANY UPON TERMINATION
      OF SERVICE WITH THE COMPANY AND CERTAIN RIGHTS OF FIRST REFUSAL UPON AN
      ATTEMPTED TRANSFER OF THE SHARES. THE SECRETARY OF THE COMPANY WILL UPON
      WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF
      WITHOUT CHARGE."

SECTION 9. LEGALITY OF INITIAL ISSUANCE.

      No Shares shall be issued upon the exercise of this option unless and
until the Company has determined that:

      (a) It and the Optionee have taken any actions required to register the
Shares under the Securities Act or to perfect an exemption from the registration
requirements thereof;

      (b) Any applicable listing requirement of any stock exchange on which
Stock is listed has been satisfied; and

      (c) Any other applicable provision of state or federal law has been
satisfied.

SECTION 10. RESTRICTIONS ON TRANSFER OF SHARES.

      (a) Restrictions. The option granted hereunder is subject to the transfer
restrictions set forth in the Plan. The Optionee shall not sell, transfer,
assign, encumber, hypothecate or otherwise dispose of any Shares except in
accordance with Section 7 and Section 8; provided, however, the Company may
impose additional restrictions upon the sale, pledge or other transfer of such
Shares (including the placement of appropriate legends on stock certificates)
if, in the judgment of the Company and its counsel, such restrictions are
necessary or desirable in order to achieve compliance with the provisions

                                      -7-
<PAGE>

of the Securities Act, the securities laws of any state or any other law,
regardless of whether the offering and sale of Shares under the Plan have been
registered under the Securities Act or have been registered or qualified under
the securities laws of any state.

      (b) Investment Representations. The Optionee represents, warrants and
covenants that:

            (i) Any Shares purchased upon exercise of this option shall be
acquired for the Optionee's account for investment only and not with a view to,
or for sale in connection with, any distribution of the Shares in violation of
the Securities Act or any rule or regulation under the Securities Act;

            (ii) The Optionee has had such opportunity as the Optionee has
deemed adequate to obtain from representatives of the Company such information
as is necessary to permit the Optionee to evaluate the merits and risks of the
Optionee's investment in the Company;

            (iii) The Optionee is able to bear the economic risk of holding
Shares acquired pursuant to the exercise of this option for an indefinite
period;

            (iv) The Optionee understands that (A) the Shares acquired pursuant
to the exercise of this option will not be registered under the Securities Act
and are "restricted securities" within the meaning of Rule 144 under the
Securities Act; (B) such Shares cannot be sold, transferred or otherwise
disposed of unless they are subsequently registered under the Securities Act or
an exemption from registration is then available; (C) in any event, an exemption
from registration under Rule 144 or otherwise under the Securities Act may not
be available for at least one year and even then will not be available unless a
public market then exists for the Stock, adequate information concerning, the
Company is then available to the public and other terms and conditions of Rule
144 are complied with; and (D) there is now no registration statement on file
with the Securities and Exchange Commission with respect to any Stock of the
Company and the Company has no obligation or current intention to register any
Shares acquired pursuant to the exercise of this option under the Securities
Act;

            (v) The Optionee agrees that, if the Company offers for the first
time any of its Stock for sale pursuant to a registration statement under the
Securities Act, the Optionee will not, without the prior written consent of the
Company, publicly offer, sell, contract to sell or otherwise dispose of,
directly or indirectly, any Shares purchased upon exercise of this option for a
period of ninety (90) days, or such longer period as the Company may reasonably
require, after the effective date of such registration statement; and

            (vi) The Optionee's principal residence is at the address set forth
below on the signature page and the Optionee shall promptly notify the Company
of any change in the Optionee's principal address.

By making payment upon any exercise of this option, in whole or in part, the
Optionee shall be deemed to have reaffirmed, as of the date of such payment, the
representations made in this Section 10(b).

      (c) Legend. All certificates evidencing Shares acquired under this
Agreement in an unregistered transaction shall bear the following restrictive
legend (and such other restrictive legends as are required or deemed advisable
under the provisions of any applicable law):

                                      -8-
<PAGE>

      "THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
      SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
      OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH
      ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL,
      THAT SUCH REGISTRATION IS NOT REQUIRED."

      (d) Removal of Legends. If, in the opinion of the Company and its counsel,
any legend placed on a stock certificate representing Shares sold under this
Agreement is no longer required, the holder of such certificate shall be
entitled to exchange such certificate for a certificate representing the same
number of Shares but lacking such legend.

      (e) Administration. Any determination by the Company and its counsel in
connection with any of the matters set forth in this Section 10 shall be
conclusive and binding on the Optionee and all other persons.

SECTION 11. SHARES AND ADJUSTMENTS.

      (a) General. In the event of a subdivision of the outstanding Shares, a
declaration of a dividend payable in shares, a declaration of a dividend payable
in a form other than Shares in an amount that has a material effect on the value
of Shares, a combination or consolidation of the outstanding Shares (by
reclassification or otherwise) into a lesser number of Shares, a
recapitalization or a similar occurrence, the Committee shall make appropriate
adjustments in one or both of (i) the number of shares covered by this option or
(ii) the Exercise Price.

      (b) Mergers and Other Reorganizations. In the event that the Company is to
be consolidated with or acquired by another entity in a merger, sale of all or
substantially all of the Company's assets or otherwise, this option shall be
subject to the agreement governing such transaction. Such agreement shall
provide (i) for the assumption of this option by the surviving corporation or
its parent or for its continuation by the Company (if the Company is a surviving
corporation), without the Optionee's consent, (ii) for the acceleration of the
exercisability of this option followed by its cancellation if not exercised,
without the Optionee's consent (and any such cancellation shall not occur
earlier than 30 days after such acceleration is effective and the Optionee has
been notified of such acceleration), (iii) for a limited period of exercise of
this option to the extent then exercisable, without the Optionee's consent, upon
notice to the Optionee, followed by its cancellation if not exercised (and any
such cancellation shall not occur earlier than 30 days after such limited period
of exercise is effective and the Optionee has been notified of such), or (iv)
for the termination of this option in exchange for a cash payment equal to the
difference between the Fair Market Value of one Share (if greater than the
Exercise Price) and the Exercise Price multiplied by the number of Shares
issuable upon exercise of this option, but only with the Optionee's consent.

      (c) Dissolution or Liquidation. In the event of the proposed dissolution
or liquidation of the Company, the option granted hereunder shall terminate
immediately prior to the consummation of such action or at such other time and
subject to such other conditions as shall be determined by the Committee.

                                      -9-
<PAGE>

      (d) Reservation of Rights. Except as provided in this Section 11, the
Optionee shall have no rights by reason of any subdivision or consolidation of
shares of stock of any class, the payment of any dividend or any other increase
or decrease in the number of shares of stock of any class. Any issue by the
Company of shares of stock of any class, or securities convertible into shares
of stock of any class, shall not affect, and no adjustment by reason thereof
shall be made with respect to, the number or Exercise Price of the Shares
subject to this option. The grant of this option shall not affect in any way the
right or power of the Company to make adjustments, reclassifications,
reorganizations or changes of its capital or business structure, to merge or
consolidate or to dissolve, liquidate, sell or transfer all or any part of its
business or assets. Any shares of the capital stock of the Company issued or
issuable to the Optionee pursuant to the foregoing adjustments shall be subject
to the same restrictions imposed on the option granted hereunder and the Shares
issued or issuable upon exercise of such option.

      (e) Fractional Shares. No fractional shares shall be issued under the Plan
and the optionee shall receive from the Company cash in lieu of such fractional
shares.

SECTION 12. MISCELLANEOUS PROVISIONS.

      (a) Withholding Taxes. In the event that the Company determines that it is
required to withhold foreign, federal, state or local tax as a result of the
exercise of this option, the Optionee, as a condition to the exercise of this
option, shall make arrangements satisfactory to the Company to enable it to
satisfy all withholding requirements. The Optionee shall also make arrangements
satisfactory to the Company to enable it to satisfy any withholding requirements
that may arise in connection with the disposition of Shares purchased by
exercising this option.

      (b) Rights as a Shareholder. Neither the Optionee nor the Optionee's
representative shall have any rights as a shareholder with respect to any Shares
subject to this Option until such Shares have been issued in the name of the
Optionee or the Optionee's representative.

      (c) No Employment Rights. Nothing in this Agreement shall be construed as
giving the Optionee the right to be retained as an Employee. The Company
reserves the right to terminate the Optionee's service at any time, with or
without cause.

      (d) Notice. Any notice required by the terms of this Agreement shall be
given in writing and shall be deemed effective upon personal delivery or upon
deposit with the United States Postal Service, by registered or certified mail
with postage and fees prepaid and addressed to the party entitled to such notice
at the address shown below such party's signature on this Agreement, or at such
other address as such party may designate by 10 days, advance written notice to
the other party to this Agreement.

      (e) Entire Agreement; Severability. This Agreement and the Plan constitute
the entire contract between the parties hereto with regard to the subject matter
hereof. Whenever possible, each provision of this Agreement shall be interpreted
in such a manner as to be effective and valid under applicable law, but if any
provision of this Agreement shall be deemed prohibited or invalid under such
applicable law, such provision shall be ineffective to the extent of such
prohibition or invalidity, and such prohibition or invalidity shall not
invalidate the remainder of such provision or the other provisions of this
Agreement.

                                      -10-
<PAGE>

      (f) Choice of Law. This Agreement shall be governed by, and construed in
accordance with, the laws of the Commonwealth of Massachusetts, as such laws are
applied to contracts entered into and performed in such Commonwealth.

      (g) Specific Performance. It is specifically understood and agreed that
any breach of the provisions of this Agreement by the Optionee will result in
irreparable injury to the Company, that the remedy at law alone will be an
inadequate remedy for such breach, and that, in addition to any other remedies
which the Company may have, the Company may enforce its rights by actions for
specific performance (to the extent permitted by law). The Company may refuse to
recognize any unauthorized transferee as one of its stockholders for any
purpose, including, without limitation, for purposes of dividend and voting
rights, until the relevant party or parties have complied with all applicable
provisions of this Agreement.

SECTION 13. DEFINITIONS.

      (a) "Agreement" shall mean this Incentive Stock Option Agreement.

      (b) "Board" shall mean the Board of Directors of the Company, as
constituted from time to time.

      (c) "Code" shall mean the Internal Revenue Code or 1986, as amended.

      (d) "Committee" shall mean the committee of the Board described in Section
3 of the Plan or, if none has been appointed, the full Board.

      (e) "Date of Grant" shall mean the date on which the Committee resolved to
grant this option, which is also the date as of which this Agreement is entered
into.

      (f) "Employee" shall mean any employee of the Company or of a Subsidiary
as determined in accordance with the provisions of Treasury Regulation Section
1.421-7(h) under the Code or any successor regulations thereto.

      (g) "Exercise Price" shall mean the amount for which one Share may
purchased upon exercise of this option, as specified in Section 1(a).

      (h) "Fair Market Value" shall mean the fair market value of a Share, as
determined by the Committee in good faith. Such determination shall be
conclusive and binding on all persons.

      (i) "Incentive Stock Option" shall mean an employee incentive stock option
described in section 422(b) of the Code.

      (j) "Nonstatutory Stock Option" shall mean a stock option not described in
section 422(b) or section 423(b) of the Code.

      (k) "Plan" shall mean the 1994 Stock Plan of IRobot Corporation as in
effect on the Date of Grant.

                                      -11-
<PAGE>

      (l) "Purchase Price" shall mean the Exercise Price multiplied by the
number of Shares with respect to which this option is being exercised.

      (m) "Restricted Share" shall mean a Share which is subject to the
Company's right of repurchase under Section 8.

      (n) "Right of First Refusal" shall mean the Company's right of first
refusal described in Section 7.

      (o) "Securities Act" shall mean the Securities Act of 1933, as amended.

      (p) "Share" shall mean one share of Stock, as adjusted in accordance with
Section 11 (if applicable).

      (q) "Stock" shall mean the Common Stock of Company.

      (r) "Subsidiary" shall mean any corporation, if the Company and/or one or
more other Subsidiaries own not less than 50% of the total combined voting power
of all classes of outstanding stock of such corporation.

      (s) "Total and Permanent Disability" shall mean that the Optionee is
unable to engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which can be expected to result in
death or which has lasted, or can be expected to last, for a continuous period
of not less than six months.

      (t) "Transferee" shall mean any person to whom the Optionee has directly
or indirectly transferred any Share acquired under this Agreement.

      (u) "Transfer Notice" shall mean the notice of a proposed transfer of
Shares described in Section 7.

      IN WITNESS WHEREOF, the Company has caused this Agreement to be executed
on its behalf by its officer duly authorized to act on behalf of the Committee,
and the Optionee has personally executed this Agreement.

OPTIONEE                                      IROBOT CORPORATION

___________________________________           By: _____________________________
Name:
Optionee's Address:                           Company's Address:
                                              Twin City Office Center
                                              Suite #6
                                              22 McGrath Highway
                                              Somerville, MA 02143

                                      -12-
<PAGE>

                               IROBOT CORPORATION

                          STOCK OPTION GRANT AGREEMENT

      THE OPTION GRANTED PURSUANT TO THIS NONSTATUTORY STOCK OPTION AGREEMENT
(THE "OPTION") AND THE SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE HEREOF
HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
"SECURITIES ACT"), AND MAY NOT BE PLEDGED, HYPOTHECATED, SOLD, TRANSFERRED OR
OTHERWISE DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR
THE OPTION OR THE SHARES UNDER THE SECURITIES ACT, OR AN OPINION OF COUNSEL,
WHICH IS SATISFACTORY TO THE CORPORATION AND ITS COUNSEL, THAT SUCH REGISTRATION
IS NOT REQUIRED.

                      1994 STOCK PLAN OF IROBOT CORPORATION

                       NONSTATUTORY STOCK OPTION AGREEMENT

      THIS AGREEMENT, entered into as of _______________________, 199__, is
between IROBOT CORPORATION, a Delaware corporation (the "Company"), and
____________________________________________ (the "Optionee").

                              W I T N E S S E T H:

      WHEREAS, the Company's Board of Directors has established the 1994 Stock
Plan of IRobot Corporation in order to provide selected Employees of the Company
and its Subsidiaries with an opportunity to acquire Common Stock of the Company;
and

      WHEREAS, the Committee has determined that it would be in the best
interests of the Company and its shareholders to grant the Nonstatutory Stock
Option described in this Agreement to the Optionee as an inducement to enter
into or remain in the service of the Company and as an incentive for
extraordinary efforts during such service;

      NOW, THEREFORE, for valuable consideration, the receipt and adequacy of
which is hereby acknowledged, the parties, intending to be legally bound hereby,
agree as follows:

SECTION 1. GRANT OF OPTION.

      (a) Option. On the terms and conditions stated below, the Company hereby
grants to the Optionee the option to purchase _________________________
( _________ ) Shares for the sum of [________] ($[___]) per share. This option
shall not be treated as an Incentive Stock Option.

<PAGE>

      (b) Stock Plan. This option is granted pursuant to the Plan, a copy of
which the Optionee acknowledges having received and read. The provisions of the
Plan are incorporated into this Agreement by this reference.

      (c) Grant Condition. The granting of this option shall be subject to
receipt by the Company of the Company's current form of Invention and
Confidentiality Agreement, executed and delivered by the Optionee.

SECTION 2. NO TRANSFER OR ASSIGNMENT OF OPTION.

      Except as otherwise provided in this Agreement, this option and the rights
and privileges conferred hereby shall not be transferred, assigned, pledged or
hypothecated in any way (whether by operation of law or otherwise) and shall not
be subject to sale under execution, attachment or similar process. Upon any
attempt to transfer, assign, pledge, hypothecate or otherwise dispose of this
option, or of any right or privilege conferred hereby, contrary to the
provisions hereof, or upon any attempted sale under any execution, attachment or
similar process upon the rights and privileges conferred hereby, this option and
the rights and privileges conferred hereby shall immediately become null and
void.

SECTION 3. RIGHT TO EXERCISE.

      (a) Vesting. Subject to the conditions stated herein, the right to
exercise this option shall accrue in installments as follows provided the
Optionee has continued to be an Employee through any such applicable date:

<TABLE>
<CAPTION>
                                               Percentage
                                            Shares Exercisable
                                            ------------------
<S>                                         <C>
Date of Grant                                        0%

First Anniversary of
Date of Grant                                       20%

Second Anniversary of
Date of Grant                                       40%

Third Anniversary of
Date of Grant                                       60%

Fourth Anniversary of
Date of Grant                                       80%
</TABLE>

                                      -2-
<PAGE>

<TABLE>
<S>                                                <C>
Fifth Anniversary of
Date of Grant                                      100%
</TABLE>

      (b) Periods of Nonexercisability. Any other provision of this Agreement
notwithstanding, the Company shall have the right to designate one or more
periods of time, each of which shall not exceed 18 consecutive months in length,
during which this option shall not be exercisable if the Company determines (in
its sole discretion) that such limitation on exercise could in any way
facilitate a lessening of any restriction on transfer pursuant to the Securities
Act or any state securities laws with respect to any issuance of securities by
the Company, facilitate the registration or qualification of any securities by
the Company under the Securities Act or any state securities laws, or facilitate
the perfection of any exemption from the registration or qualification
requirements of the Securities Act or any applicable state securities laws for
the issuance or transfer of any securities. Such limitation on exercise shall
not alter the vesting of this option as set forth in Section 3(a) other than to
limit the periods during which this option shall be exercisable. The Optionee
shall be notified in writing of any such designation by the Company.

      (c) Shareholder Approval. Any other provision of this Agreement
notwithstanding, this option shall not be exercisable at any time prior to the
approval of the Plan by the holders of a majority of the outstanding stock of
the Company.

      (d) Termination Upon Breach of Certain Agreements. Notwithstanding the
foregoing, if, in the judgment of the Company, the Optionee, prior to the
expiration date of this option, materially violates the non-competition,
non-solicitation, assignment of inventions or confidentiality provisions of any
employment contract, confidentiality and nondisclosure agreement or other
agreement between the Optionee and the Company, the right to exercise this
option shall terminate immediately upon written notice to the Optionee from the
Company describing such violation.

SECTION 4. EXERCISE PROCEDURES.

      (a) Notice of Exercise. The Optionee or the Optionee's representative may
exercise this option by giving written notice to the Secretary of the Company
pursuant to Section 12(d). The notice shall specify the election to exercise
this option, the number of Shares for which it is being exercised, and the form
of payment. The notice shall be signed by the person or persons exercising this
option. In the event that this option is being exercised by the representative
of the Optionee, the notice shall be accompanied by proof (satisfactory to the
Company) of the representative's right to exercise this option. The Optionee or
the Optionee's representative shall deliver to the Secretary of the Company, at
the time of giving the notice, payment in a form permissible under Section 5 for
the full amount of the Purchase Price.

      (b) Issuance of Shares. After receiving a proper notice of exercise, the
Company shall cause to be issued a certificate or certificates for the Shares as
to which this option has been exercised, registered in the name of the person
exercising this option (or in the names of such person and his or her spouse as
community property or as joint tenants with right of

                                      -3-
<PAGE>

survivorship). The Company shall cause such certificate or certificates to be
delivered to or upon the order of the person exercising this option.

SECTION 5. PAYMENT FOR STOCK

      The entire Purchase Price may be paid in U.S. dollars. Alternatively, all
or part of the Purchase Price may be paid by the surrender of Shares in good
form for transfer. Such Shares must have been owned for more than 12 months by
the Optionee or the Optionee's representative and must have a fair market value
(as determined by the Committee) on the date of exercise of this option which,
together with any amount paid in cash, is equal to the Purchase Price.

SECTION 6. TERM AND EXPIRATION.

      (a) Basic Term. This option shall in any event expire on the date 10 years
after the Date of Grant.

      (b) Termination of Service (Except by Death). If the Optionee's service as
an Employee terminates for any reason other than death, then this option shall
expire on the earliest of the following occasions:

            (i) The expiration date determined pursuant to Subsection (a) above;

            (ii) The date 60 days after the termination of the Optionee's
      service as an Employee for any reason other than Total and Permanent
      Disability; or

            (iii) The date six months after the termination of the Optionee's
      service as an Employee by reason of Total and Permanent Disability.

The Optionee may exercise all or part of this option at any time before its
expiration under the preceding sentence, but only to the extent that this option
had become exercisable before the Optionee's service terminated. The balance of
this option shall lapse when the Optionee's service as an Employee terminates.
In the event that the Optionee dies after the termination of service but before
the expiration of this option, all or part of this option may be exercised
(prior to expiration) by the executors or administrators of the Optionee's
estate or by any person who has acquired this option directly from the Optionee
by bequest or inheritance, but only to the extent that this option had become
exercisable before the Optionee's service terminated.

      (c) Death of Optionee. If the Optionee dies as an Employee, then this
option shall expire on the earlier of the following dates:

            (i) The expiration date determined pursuant to Subsection (a) above;
      or

                                      -4-
<PAGE>

            (ii) The date six months after the Optionee's death.

All or part of this option may be exercised at any time before its expiration
under the preceding sentence by the executors or administrators of the
Optionee's estate or by any person who has acquired this option directly from
the Optionee by bequest or inheritance, but only to the extent that this option
had become exercisable before the Optionee's death. The balance of this option
shall lapse when the Optionee dies.

      (d) Leaves of Absence. For purposes of this Section 6, the Employee
relationship shall be deemed to continue during any period when the Optionee is
on military leave, sick leave or other bona fide leave of absence (to be
determined in the sole discretion of the Committee). However, if the Optionee's
reemployment rights are not guaranteed by statute or by contract, then the
Employee relationship shall not be deemed to continue beyond the 90th day of
such period.

SECTION 7. THE COMPANY'S RIGHT OF FIRST REFUSAL

      (a) Right of First Refusal. In the event that the Optionee or a Transferee
proposes to sell, pledge or otherwise transfer to any person any Shares acquired
under this Agreement, or any interest in such Shares, the Company shall have the
Right of First Refusal with respect to such Shares. If the Optionee or
Transferee desires to transfer Shares acquired under this Agreement, the
Optionee or Transferee shall give a written Transfer Notice to the Company
describing fully the proposed transfer, including the number of Shares proposed
to be transferred, the proposed transfer price and the name and address of the
proposed Transferee. The Transfer Notice shall be signed both by the Optionee or
Transferee and by the proposed new Transferee and must constitute a binding
commitment of both parties to the transfer of the Shares. The Company shall have
the right to purchase the Shares on the terms of the proposal described in the
Transfer Notice (subject, however, to any change in such terms permitted under
Subsection (b) below) by delivery of a notice of exercise of the Right of First
Refusal within in 30 days after the date when the Transfer Notice was received
by the Company. The Company's rights under this Subsection (a) shall be freely
assignable, in whole or in part.

      (b) Transfer of Shares. If the Company fails to exercise its Right of
First Refusal within 30 days after the date when it received the Transfer
Notice, the Optionee or Transferee may, not later than 90 days following receipt
of the Transfer Notice by the Company, conclude a transfer of the Shares subject
to the Transfer Notice on the terms and conditions described in the Transfer
Notice. Any proposed transfer on terms and conditions different from those
described in the Transfer Notice, as well as any subsequent proposed transfer by
the Optionee or Transferee, shall again be subject to the Right of First Refusal
and shall require compliance with the procedure described in Subsection (a)
above. If the Company exercises its Right of First Refusal, the parties shall
consummate the sale of the Shares on the terms set forth in the Transfer Notice;
provided, however, that in the event the Transfer Notice provides that payment
for the Shares is to be made in a form other than lawful money paid at the time
of transfer, the Company shall have the option of paying for the Shares with
lawful money equal to the present value of the consideration described in the
Transfer Notice.

                                      -5-
<PAGE>

      (c) Binding Effect. The Company's Right of First Refusal shall inure to
the benefit of its successors and assigns and shall be binding upon any
Transferee of the Shares.

      (d) Termination of Right of First Refusal. Any other provision of this
Section 7 notwithstanding, in the event that Stock is listed on an established
stock exchange or is quoted regularly on the NASDAQ System at the time when the
Optionee or Transferee desires to transfer Shares, the Company shall have no
Right of First Refusal, and the Optionee or Transferee shall have no obligation
to comply with the procedures prescribed by Subsections (a), (b) and (c) above.

SECTION 8. RIGHT OF REPURCHASE.

      (a) Basic Repurchase Right. The Shares acquired under this Agreement shall
be Restricted Shares and shall be subject to the right (but not an obligation)
of repurchase by the Company. The Company's rights under this Subsection (a)
shall be freely assignable, in whole or in part.

      (b) Condition Precedent to Exercise. The Company's right of repurchase
shall be exercisable only during the 60-day period next following the later of
(i) the date when the Optionee ceases to be an Employee for any reason, with or
without cause, including (without limitation) death or disability, or (ii) the
date when the option was exercised by the Optionee, the executors or
administrators of the Optionee's estate or any person who has acquired the
option directly from the Optionee by bequest or inheritance.

      (c) Repurchase Cost. If the Company exercises its right to repurchase, it
shall pay the Optionee an amount equal to (1) the greater of (i) the price per
Share paid by the Optionee under Section 1(a) hereof, or (ii) Fair Market Value
at the time of repurchase multiplied by (2) the number of Restricted Shares to
be repurchased. The Company's right of repurchase shall terminate with respect
to Restricted Shares if the Stock is listed on an established stock exchange or
quoted regularly on the NASDAQ System.

      (d) Exercise of Repurchase Right. If the Company elects to exercise its
right of repurchase with respect to any Restricted Shares, it must exercise its
right of repurchase with respect to all Restricted Shares. The Company's right
of repurchase shall be exercisable only by written notice delivered to the
Optionee prior to the expiration of the 60-day period specified in Subsection
(b) above. The notice shall set forth the date on which the repurchase is to be
effected. Such date shall not be more than 30 days after the date of the notice.
The certificate(s) representing the Restricted Shares to be repurchased shall,
prior to the close of business on the date specified for the repurchase, be
delivered to the Secretary of the Company. Each certificate shall be properly
endorsed for transfer. The Company shall, concurrently with the receipt of such
certificate(s), pay to the Optionee the purchase price determined according to
Subsection (c) above. Payment shall be made in lawful money of the United States
of America. The Company's right of repurchase shall terminate with respect to
any Restricted Shares for which it has not been timely exercised pursuant to
this Subsection (d).

                                      -6-
<PAGE>

      (e) Cancellation of Shares. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the
consideration for the Restricted Shares to be repurchased in accordance with the
provisions of this Agreement, then after such time the person from whom such
Restricted Shares are to be repurchased shall no longer have any rights as a
holder of such Restricted Shares (other than the right to receive payment of
consideration in accordance with this Agreement). Such Restricted Shares shall
be deemed to have been repurchased in accordance with the applicable provisions
hereof, whether or not the certificate (s) therefor have been delivered as
required by this Agreement.

      (f) Additional Shares or Substituted Securities. In the event of the
declaration of a stock dividend, the declaration of any extraordinary dividend
payable in a form other than stock, a stock split, an adjustment in conversion
ratio, a recapitalization or a similar transaction affecting the Company's
outstanding securities without receipt of consideration, any new, substituted or
additional securities or other property (including money paid other than as an
ordinary cash dividend) that are by reason of such transaction distributed with
respect to any Restricted Shares or into which such Restricted Shares thereby
become convertible, shall immediately be subject to the Company's right of
repurchase. Appropriate adjustments to reflect the distribution of such
securities or property shall be made to the number and/or class of the
Restricted Shares. Appropriate adjustments shall also, after each such
transaction, be made to the price per share to be paid upon the exercise of the
right of repurchase in order to reflect any change in the Company's outstanding
securities effected without receipt of consideration therefor; provided,
however, that the aggregate purchase price payable for the Restricted Shares
shall remain the same.

      (g) Legends. In addition to the legends required by Section 10 (c), all
certificates representing Shares purchased under this Agreement shall be
endorsed with the following legend:

      "THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED,
      ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE
      TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER
      OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH
      AGREEMENT GRANTS CERTAIN REPURCHASE RIGHTS TO THE COMPANY UPON TERMINATION
      OF SERVICE WITH THE COMPANY AND CERTAIN RIGHTS OF FIRST REFUSAL UPON AN
      ATTEMPTED TRANSFER OF THE SHARES. THE SECRETARY OF THE COMPANY WILL UPON
      WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF
      WITHOUT CHARGE."

SECTION 9. LEGALITY OF INITIAL ISSUANCE.

                                      -7-
<PAGE>

      No Shares shall be issued upon the exercise of this option unless and
until the Company has determined that:

      (a) It and the Optionee have taken any actions required to register the
Shares under the Securities Act or to perfect an exemption from the registration
requirements thereof;

      (b) Any applicable listing requirement of any stock exchange on which
Stock is listed has been satisfied; and

      (c) Any other applicable provision of state or federal law has been
satisfied.

SECTION 10. RESTRICTIONS ON TRANSFER OF SHARES.

      (a) Restrictions. The option granted hereunder is subject to the transfer
restrictions set forth in the Plan. The Optionee shall not sell, transfer,
assign, encumber, hypothecate or otherwise dispose of any Shares except in
accordance with Section 7 and Section 8; provided, however, the Company may
impose additional restrictions upon the sale, pledge or other transfer of such
Shares (including the placement of appropriate legends on stock certificates)
if, in the judgment of the Company and its counsel, such restrictions are
necessary or desirable in order to achieve compliance with the provisions of the
Securities Act, the securities laws of any state or any other law, regardless of
whether the offering and sale of Shares under the Plan have been registered
under the Securities Act or have been registered or qualified under the
securities laws of any state.

      (b) Investment Representations. The Optionee represents, warrants and
covenants that:

            (i) Any Shares purchased upon exercise of this option shall be
acquired for the Optionee's account for investment only and not with a view to,
or for sale in connection with, any distribution of the Shares in violation of
the Securities Act or any rule or regulation under the Securities Act;

            (ii) The Optionee has had such opportunity as the Optionee has
deemed adequate to obtain from representatives of the Company such information
as is necessary to permit the Optionee to evaluate the merits and risks of the
Optionee's investment in the Company;

            (iii) The Optionee is able to bear the economic risk of holding
Shares acquired pursuant to the exercise of this option for an indefinite
period;

            (iv) The Optionee understands that (A) the Shares acquired pursuant
to the exercise of this option will not be registered under the Securities Act
and are "restricted securities" within the meaning of Rule 144 under the
Securities Act; (B) such Shares cannot be sold, transferred or otherwise
disposed of unless they are subsequently registered under the Securities Act or
an exemption from registration is then available; (C) in any event, an exemption
from registration under Rule 144 or otherwise under the Securities Act may not
be available for

                                      -8-
<PAGE>

at least one year and even then will not be available unless a public market
then exists for the Stock, adequate information concerning, the Company is then
available to the public and other terms and conditions of Rule 144 are complied
with; and (D) there is now no registration statement on file with the Securities
and Exchange Commission with respect to any Stock of the Company and the Company
has no obligation or current intention to register any Shares acquired pursuant
to the exercise of this option under the Securities Act;

            (v) The Optionee agrees that, if the Company offers for the first
time any of its Stock for sale pursuant to a registration statement under the
Securities Act, the Optionee will not, without the prior written consent of the
Company, publicly offer, sell, contract to sell or otherwise dispose of,
directly or indirectly, any Shares purchased upon exercise of this option for a
period of ninety (90) days, or such longer period as the Company may reasonably
require, after the effective date of such registration statement; and

            (vi) The Optionee's principal residence is at the address set forth
below on the signature page and the Optionee shall promptly notify the Company
of any change in the Optionee's principal address.

By making payment upon any exercise of this option, in whole or in part, the
Optionee shall be deemed to have reaffirmed, as of the date of such payment, the
representations made in this Section 10(b).

      (c) Legend. All certificates evidencing Shares acquired under this
Agreement in an unregistered transaction shall bear the following restrictive
legend (and such other restrictive legends as are required or deemed advisable
under the provisions of any applicable law):

      "THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE
      SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
      OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH
      ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL,
      THAT SUCH REGISTRATION IS NOT REQUIRED."

      (d) Removal of Legends. If, in the opinion of the Company and its counsel,
any legend placed on a stock certificate representing Shares sold under this
Agreement is no longer required, the holder of such certificate shall be
entitled to exchange such certificate for a certificate representing the same
number of Shares but lacking such legend.

      (e) Administration. Any determination by the Company and its counsel in
connection with any of the matters set forth in this Section 10 shall be
conclusive and binding on the Optionee and all other persons.

SECTION 11. SHARES AND ADJUSTMENTS.

                                      -9-
<PAGE>

      (a) General. In the event of a subdivision of the outstanding Shares, a
declaration of a dividend payable in shares, a declaration of a dividend payable
in a form other than Shares in an amount that has a material effect on the value
of Shares, a combination or consolidation of the outstanding Shares (by
reclassification or otherwise) into a lesser number of Shares, a
recapitalization or a similar occurrence, the Committee shall make appropriate
adjustments in one or both of (i) the number of shares covered by this option or
(ii) the Exercise Price.

      (b) Mergers and Other Reorganizations. In the event that the Company is to
be consolidated with or acquired by another entity in a merger, sale of all or
substantially all of the Company's assets or otherwise, this option shall be
subject to the agreement governing such transaction. Such agreement shall
provide (i) for the assumption of this option by the surviving corporation or
its parent or for its continuation by the Company (if the Company is a surviving
corporation), without the Optionee's consent, (ii) for the acceleration of the
exercisability of this option followed by its cancellation if not exercised,
without the Optionee's consent (and any such cancellation shall not occur
earlier than 30 days after such acceleration is effective and the Optionee has
been notified of such acceleration), (iii) for a limited period of exercise of
this option to the extent then exercisable, without the Optionee's consent, upon
notice to the Optionee, followed by its cancellation if not exercised (and any
such cancellation shall not occur earlier than 30 days after such limited period
of exercise is effective and the Optionee has been notified of such), or (iv)
for the termination of this option in exchange for a cash payment equal to the
difference between the Fair Market Value of one Share (if greater than the
Exercise Price) and the Exercise Price multiplied by the number of Shares
issuable upon exercise of this option, but only with the Optionee's consent.

      (c) Dissolution or Liquidation. In the event of the proposed dissolution
or liquidation of the Company, the option granted hereunder shall terminate
immediately prior to the consummation of such action or at such other time and
subject to such other conditions as shall be determined by the Committee.

      (d) Reservation of Rights. Except as provided in this Section 11, the
Optionee shall have no rights by reason of any subdivision or consolidation of
shares of stock of any class, the payment of any dividend or any other increase
or decrease in the number of shares of stock of any class. Any issue by the
Company of shares of stock of any class, or securities convertible into shares
of stock of any class, shall not affect, and no adjustment by reason thereof
shall be made with respect to, the number or Exercise Price of the Shares
subject to this option. The grant of this option shall not affect in any way the
right or power of the Company to make adjustments, reclassifications,
reorganizations or changes of its capital or business structure, to merge or
consolidate or to dissolve, liquidate, sell or transfer all or any part of its
business or assets. Any shares of the capital stock of the Company issued or
issuable to the Optionee pursuant to the foregoing adjustments shall be subject
to the same restrictions imposed on the option granted hereunder and the Shares
issued or issuable upon exercise of such option.

      (e) Fractional Shares. No fractional shares shall be issued under the Plan
and the optionee shall receive from the Company cash in lieu of such fractional
shares.

                                      -10-
<PAGE>

SECTION 12. MISCELLANEOUS PROVISIONS.

      (a) Withholding Taxes. In the event that the Company determines that it is
required to withhold foreign, federal, state or local tax as a result of the
exercise of this option, the Optionee, as a condition to the exercise of this
option, shall make arrangements satisfactory to the Company to enable it to
satisfy all withholding requirements. The Optionee shall also make arrangements
satisfactory to the Company to enable it to satisfy any withholding requirements
that may arise in connection with the disposition of Shares purchased by
exercising this option.

      (b) Rights as a Shareholder. Neither the Optionee nor the Optionee's
representative shall have any rights as a shareholder with respect to any Shares
subject to this Option until such Shares have been issued in the name of the
Optionee or the Optionee's representative.

      (c) No Employment Rights. Nothing in this Agreement shall be construed as
giving the Optionee the right to be retained as an Employee. The Company
reserves the right to terminate the Optionee's service at any time, with or
without cause.

      (d) Notice. Any notice required by the terms of this Agreement shall be
given in writing and shall be deemed effective upon personal delivery or upon
deposit with the United States Postal Service, by registered or certified mail
with postage and fees prepaid and addressed to the party entitled to such notice
at the address shown below such party's signature on this Agreement, or at such
other address as such party may designate by 10 days, advance written notice to
the other party to this Agreement.

      (e) Entire Agreement; Severability. This Agreement and the Plan constitute
the entire contract between the parties hereto with regard to the subject matter
hereof. Whenever possible, each provision of this Agreement shall be interpreted
in such a manner as to be effective and valid under applicable law, but if any
provision of this Agreement shall be deemed prohibited or invalid under such
applicable law, such provision shall be ineffective to the extent of such
prohibition or invalidity, and such prohibition or invalidity shall not
invalidate the remainder of such provision or the other provisions of this
Agreement.

      (f) Choice of Law. This Agreement shall be governed by, and construed in
accordance with, the laws of the Commonwealth of Massachusetts, as such laws are
applied to contracts entered into and performed in such Commonwealth.

      (g) Specific Performance. It is specifically understood and agreed that
any breach of the provisions of this Agreement by the Optionee will result in
irreparable injury to the Company, that the remedy at law alone will be an
inadequate remedy for such breach, and that, in addition to any other remedies
which the Company may have, the Company may enforce its rights by actions for
specific performance (to the extent permitted by law). The Company may refuse to
recognize any unauthorized transferee as one of its stockholders for any
purpose, including, without limitation, for purposes of dividend and voting
rights, until the relevant party or parties have complied with all applicable
provisions of this Agreement.

                                      -11-
<PAGE>

SECTION 13. DEFINITIONS.

      (a) "Agreement" shall mean this Nonstatutory Stock Option Agreement.

      (b) "Board" shall mean the Board of Directors of the Company, as
constituted from time to time.

      (c) "Code" shall mean the Internal Revenue Code or 1986, as amended.

      (d) "Committee" shall mean the committee of the Board described in Section
3 of the Plan or, if none has been appointed, the full Board.

      (e) "Date of Grant" shall mean the date on which the Committee resolved to
grant this option, which is also the date as of which this Agreement is entered
into.

      (f) "Employee" shall mean (i) any employee of the Company or of a
Subsidiary as determined in accordance with the provisions of Treasury
Regulation Section 1.421-7(h) under the Code or any successor regulations
thereto, (ii) a member of the Board of Directors, (iii) an independent
contractor who performs services for the Company or a Subsidiary, and (iv) any
individual who is employed by any partnership in which the Company has a
substantial partnership interest.

      (g) "Exercise Price" shall mean the amount for which one Share may
purchased upon exercise of this option, as specified in Section 1(a).

      (h) "Fair Market Value" shall mean the fair market value of a Share, as
determined by the Committee in good faith. Such determination shall be
conclusive and binding on all persons.

      (i) "Incentive Stock Option" shall mean an employee incentive stock option
described in section 422(b) of the Code.

      (j) "Nonstatutory Stock Option" shall mean a stock option not described in
section 422(b) or section 423(b) of the Code.

      (k) "Plan" shall mean the 1994 Stock Plan of IRobot Corporation as in
effect on the Date of Grant.

      (1) "Purchase Price" shall mean the Exercise Price multiplied by the
number of Shares with respect to which this option is being exercised.

      (m) "Restricted Share" shall mean a Share which is subject to the
Company's right of repurchase under Section 8.

      (n) "Right of First Refusal" shall mean the Company's right of first
refusal described in Section 7.

                                      -12-
<PAGE>

      (o) "Securities Act" shall mean the Securities Act of 1933, as amended.

      (p) "Share" shall mean one share of Stock, as adjusted in accordance with
Section 11 (if applicable).

      (q) "Stock" shall mean the Common Stock of Company.

      (r) "Subsidiary" shall mean any corporation, if the Company and/or one or
more other Subsidiaries own not less than 50% of the total combined voting power
of all classes of outstanding stock of such corporation.

      (s) "Total and Permanent Disability" shall mean that the Optionee is
unable to engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which can be expected to result in
death or which has lasted, or can be expected to last, for a continuous period
of not less than six months.

      (t) "Transferee" shall mean any person to whom the Optionee has directly
or indirectly transferred any Share acquired under this Agreement.

      (u) "Transfer Notice" shall mean the notice of a proposed transfer of
Shares described in Section 7.

                                      -13-
<PAGE>

      IN WITNESS WHEREOF, the Company has caused this Agreement to be executed
on its behalf by its officer duly authorized to act on behalf of the Committee,
and the Optionee has personally executed this Agreement.

OPTIONEE                                         IROBOT CORPORATION

________________________                         By:____________________________
Name:
Optionee's Address:                              Company's Address:

                                                 Twin City Office Center
                                                 Suite #6
                                                 22 McGrath Highway
                                                 Somerville, MA 02143

                                      -14-

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