SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Cerda Christian (Last) (First) (Middle) C/O IROBOT CORPORATION 8 CROSBY DRIVE (Street) BEDFORD MA 01730 (City) (State) (Zip)	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
	3. Date of Earliest Transaction (Month/Day/Year) 03/12/2019
	4. If Amendment, Date of Original Filed (Month/Day/Year) 03/12/2019	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

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	03/12/2019		M		639	A	$34.3	54,729	D
Common Stock	03/12/2019		M		642	A	$32.38	55,371	D
Common Stock	03/12/2019		M		708	A	$33.14	56,079	D
Common Stock	03/12/2019		M		914	A	$37.62	56,993	D
Common Stock	03/12/2019		M		298	A	$39.09	57,291	D
Common Stock	03/12/2019		S(1)		2,396	D	$121.4805(2)	54,895	D
Common Stock	03/12/2019		S(1)		5,403	D	$122.1718(3)	49,492	D
Common Stock	03/12/2019		S(1)		2,434	D	$123.6492(4)	47,058	D
Common Stock	03/12/2019		S(1)		3,944	D	$124.221(5)	43,114	D

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 Securities Underlying Derivative Security (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: 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	03/12/2019		M			639	(6)	03/06/2022	Common Stock	639	$0.00	0	D
Employee Stock Option (Right to buy)	$32.38	03/12/2019		M			642	06/05/2015(7)	06/05/2022	Common Stock	642	$0.00	642	D
Employee Stock Option (Right to buy)	$33.14	03/12/2019		M			708	03/11/2016(7)	03/11/2023	Common Stock	708	$0.00	2,834	D
Employee Stock Option (Right to buy)	$37.62	03/12/2019		M			914	06/10/2016(7)	06/10/2023	Common Stock	914	$0.00	4,570	D
Employee Stock Option (Right to buy)	$39.09	03/12/2019		M			298	09/09/2016(7)	09/09/2023	Common Stock	298	$0.00	1,790	D

Explanation of Responses:

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, and amended February 14, 2019 and March 1, 2019.

2. The range of prices for the transaction reported on this line was $120.73 to $121.72. The average weighted price was $121.4805. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

3. The range of prices for the transaction reported on this line was $121.76 to $122.67. The average weighted price was $122.1718. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

4. The range of prices for the transaction reported on this line was $122.89 to $123.87. The average weighted price was $123.6492. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

5. The range of prices for the transaction reported on this line was $123.90 to $124.88. The average weighted price was $124.221. The reporting person will provide, upon request by the SEC, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

6. This option is currently exercisable.

7. 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.

Remarks:

This Form 4/A is being filed to add transaction lines in Tables I and II to reflect the exercise of stock options prior to the same-day sales of shares previously reported in the original Form 4, filed on March 12, 2019 (the "Original Form 4"). Each of the same-day sale transactions reported in this Form 4/A were also previously reported in the Original Form 4. This Form 4/A also corrects the footnotes associated with the same-day sales to reflect that the 10b5-1 plan pursuant to which the sales were made has been previously amended. No other amendments or changes have been made to the Original Form 4.

	/s/ Glen D. Weinstein, Attorney-in-Fact	03/14/2019
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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