<SUBMISSION>
<ACCESSION-NUMBER>0000950123-09-010332
<TYPE>SC TO-I/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20090602
<DATE-OF-FILING-DATE-CHANGE>20090602
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>IROBOT CORP
<CIK>0001159167
<ASSIGNED-SIC>3630
<IRS-NUMBER>770259335
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC TO-I/A
<ACT>34
<FILE-NUMBER>005-81476
<FILM-NUMBER>09866915
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
<PHONE>781-430-3000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>IROBOT CORP
<CIK>0001159167
<ASSIGNED-SIC>3630
<IRS-NUMBER>770259335
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC TO-I/A
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
<PHONE>781-430-3000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>8 CROSBY DRIVE
<CITY>BEDFORD
<STATE>MA
<ZIP>01730
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>SC TO-I/A
<SEQUENCE>1
<FILENAME>b75715r3sctoviza.htm
<DESCRIPTION>IROBOT CORPORATION
<TEXT>
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<HEAD>
<TITLE>sctoviza</TITLE>
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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 6pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>SCHEDULE TO</B>
</DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 9pt"><B><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1)<BR>
OF THE SECURITIES EXCHANGE ACT OF 1934<BR>
(Amendment No.&nbsp;3)</B>
</DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>iRobot Corporation</B>
</DIV>

<DIV align="center" style="font-size: 10pt"><I>(Name of Subject Company (Issuer) and Filing Person (Offeror))</I></DIV>


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Options to Purchase Common Stock, Par Value $0.01 Per Share of iRobot Corporation</B></DIV>

<DIV align="center" style="font-size: 10pt"><I>(Title of Class of Securities)</I></DIV>


<DIV align="center" style="font-size: 10pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>









<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>462726 10 0</B><BR>
<I>(CUSIP Number of Class of Securities)</I></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Colin M. Angle<BR>
Chairman of the Board and Chief Executive Officer<BR>
iRobot Corporation<BR>
8 Crosby Drive<BR>
Bedford, Massachusetts 01730<BR>
(781)&nbsp;430-3000</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 0pt"><I>(Name, Address and Telephone Number of Person Authorized to<BR>
Receive Notices and Communications on Behalf Of Filing Persons)</I></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B><I>Copy to:</I></B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Mark T. Bettencourt, Esq.<BR>
Goodwin Procter LLP<BR>
Exchange Place<BR>
Boston, Massachusetts 02109<BR>
(617)&nbsp;570-1000</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>CALCULATION OF FILING FEE</B></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR style="font-size: 1pt" valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="8" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><B>Transaction Valuation*</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Filing<br> Fee**</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>

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<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
              <TD valign="top" style="border-top: 2px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">$3,407,970.47
</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="top" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" valign="top" style="border-top: 2px solid #000000">190.17</TD>
    <TD nowrap valign="top" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="8" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>



<DIV style="margin-top: 3pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for purposes of calculating the amount of the filing
fee. The calculation of the Transaction Valuation assumes that all
options to purchase shares of the issuer&#146;s common stock that may be
eligible for exchange in the offer, with exercise prices greater than
or equal to $13.00, will be tendered pursuant to this offer. These
options cover an aggregate of 1,383,332 shares of the issuer&#146;s common
stock and have an aggregate value of $3,407,970.47 as of April&nbsp;24,
2009, calculated based on a binomial option pricing model.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">**</TD>
    <TD>&nbsp;</TD>
    <TD>The amount of the filing fee, calculated in accordance with Rule
0-11(b) of the Securities Exchange Act of 1934, as amended, equals
$55.80 per million dollars of the Transaction Valuation set forth
above. The Transaction Valuation set forth above was calculated for
the sole purpose of determining the filing fee and should not be used
for any other purpose.</TD>
</TR>

</TABLE>
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#254;</FONT> &nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Check the box if any part of the fee is offset as provided by Rule
0-11(a)(2) and identify the filing with which the offsetting fee
was previously paid. Identify the previous filing registration
statement number, or the Form or Schedule and the date of its
filing.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
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<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Amount Previously Paid: $190.17
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Filing Party: iRobot Corporation</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Form or Registration No.: Schedule&nbsp;TO-I
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Date Filed: April&nbsp;30, 2009</TD>
</TR>
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</TABLE>
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD> Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Check the appropriate boxes below to designate any transactions to which the statement
relates:
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD> third-party tender offer subject to Rule&nbsp;14d-1.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#254;</FONT>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD> issuer tender offer subject to Rule&nbsp;13e-4.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD> going-private transaction subject to Rule&nbsp;13e-3.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left"><FONT face="Wingdings">&#111;</FONT>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD> amendment to Schedule&nbsp;13D under Rule&nbsp;13d-2.</TD>
</TR>

</TABLE>
</DIV>
<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Check the following box if the filing is a final amendment reporting the results of the tender
offer:&nbsp;<FONT face="Wingdings">&#254;</FONT>
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 6pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>





<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">












<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Amendment No.&nbsp;3 to Schedule&nbsp;TO amends and supplements the Tender Offer Statement on
Schedule&nbsp;TO (the &#147;Schedule&nbsp;TO&#148;) filed by iRobot Corporation, a Delaware corporation (the
&#147;Company&#148;), with the Securities and Exchange Commission on April&nbsp;30, 2009 (as amended by
Amendment No.&nbsp;1 to Schedule&nbsp;TO on May&nbsp;11, 2009 and Amendment No.&nbsp;2 to Schedule&nbsp;TO on May&nbsp;28,
2009) in connection with the Company&#146;s offer to exchange certain outstanding stock options
for new stock options (the &#147;Offer&#148;) upon the terms and subject to the conditions set forth in
the Offer to Exchange that was filed as Exhibit (a)(1)(A) to the Schedule&nbsp;TO. All
capitalized terms used in this Amendment No.&nbsp;3 to Schedule&nbsp;TO and not otherwise defined have
the respective meanings ascribed to them in the Schedule&nbsp;TO.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Terms of the Transaction.</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">Item&nbsp;4 of the Schedule&nbsp;TO is hereby amended and supplemented as follows:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">The Offer expired at 11:59&nbsp;p.m., Eastern Time, May&nbsp;29, 2009. Pursuant to the
Offer, a total of 141 Eligible Participants tendered, and the Company accepted
for cancellation, options to purchase an aggregate of 678,850 shares of the
Company&#146;s common stock with exercise prices greater than or equal to $13.37,
which is the Trailing Average Price. There were an aggregate of 1,360,632 of
shares of common stock underlying all Eligible Options. The Eligible Options
that were accepted for cancellation represented approximately 50% of the total
shares of common stock underlying all of the Eligible Options. In accordance
with the terms and conditions of the Offer, on May&nbsp;29, 2009, the Company issued
New Options to purchase an aggregate of 310,607 shares of common stock in
exchange for the cancellation of the tendered Eligible Options. The exercise
price per share of each New Option granted in the Offer is $12.50, the closing
price of the Company&#146;s common stock on the NASDAQ Global Market on May&nbsp;29, 2009.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURE</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;After due inquiry and to the best of my knowledge and belief, I certify that the
information set forth in this statement is true, complete and correct.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">iRobot Corporation<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/  Glen D. Weinstein
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Name:&nbsp;&nbsp;</TD>
    <TD align="left">Glen D. Weinstein&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD valign="top">Title:&nbsp;&nbsp;</TD>
    <TD align="left">General Counsel and Secretary&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Dated: June&nbsp;2, 2009
</DIV>



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</SUBMISSION>
