Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Cerda Christian
  2. Issuer Name and Ticker or Trading Symbol
IROBOT CORP [IRBT]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Operating Officer
(Last)
(First)
(Middle)
C/O IROBOT CORPORATION, 8 CROSBY DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
01/07/2019
(Street)

BEDFORD, MA 01730
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 01/07/2019   M   1,278 A $ 34.3 53,797 D  
Common Stock 01/07/2019   M   1,284 A $ 32.38 55,081 D  
Common Stock 01/07/2019   M   1,417 A $ 33.14 56,498 D  
Common Stock 01/07/2019   M   1,828 A $ 37.62 58,326 D  
Common Stock 01/07/2019   M   597 A $ 39.09 58,923 D  
Common Stock 01/07/2019   S(1)   12,442 D $ 85 46,557 (2) D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to buy) $ 34.3 01/07/2019   M     1,278 03/06/2015(3) 03/06/2022 Common Stock 1,278 $ 0 639 D  
Employee Stock Option (Right to buy) $ 32.38 01/07/2019   M     1,284 06/05/2015(3) 06/05/2022 Common Stock 1,284 $ 0 1,284 D  
Employee Stock Option (Right to buy) $ 33.14 01/07/2019   M     1,417 03/11/2016(3) 03/11/2023 Common Stock 1,417 $ 0 3,542 D  
Employee Stock Option (Right to buy) $ 37.62 01/07/2019   M     1,828 06/10/2016(3) 06/10/2023 Common Stock 1,828 $ 0 5,484 D  
Employee Stock Option (Right to buy) $ 39.09 01/07/2019   M     597 09/09/2016(3) 09/09/2023 Common Stock 597 $ 0 2,088 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Cerda Christian
C/O IROBOT CORPORATION
8 CROSBY DRIVE
BEDFORD, MA 01730
      Chief Operating Officer  

Signatures

 /s/ Glen D. Weinstein, Attorney-in-Fact   01/09/2019
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 7, 2018.
(2) Includes 76 shares of the Issuer's Common Stock purchased through the Issuer's 2017 Employee Stock Purchase Plan.
(3) This option vests over a four-year period, at a rate of twenty-five percent (25%) on the first anniversary of the date listed in the table, and quarterly thereafter.

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