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* MAHAFFEY KENNETH LAWRENCE (Last) (First) (Middle) 77 RIO ROBLES (Street) SAN JOSE CA 95134 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol SUNPOWER CORP [ SPWR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) EVP & General Counsel
	3. Date of Earliest Transaction (Month/Day/Year) 03/01/2018
	4. If Amendment, Date of 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

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	03/01/2018		M		2,927	A	$0.00	87,904	D
Common Stock	03/01/2018		M		834	A	$0.00	88,738	D
Common Stock	03/01/2018		M		2,125	A	$0.00	90,863	D
Common Stock	03/01/2018		M		600	A	$0.00	91,463	D
Common Stock	03/01/2018		M		10,000	A	$0.00	101,463	D
Common Stock	03/01/2018		F(1)		1,013	D	$7.06	100,450	D
Common Stock	03/01/2018		F(1)		289	D	$7.06	100,161	D
Common Stock	03/01/2018		F(1)		735	D	$7.06	99,426	D
Common Stock	03/01/2018		F(1)		208	D	$7.06	99,218	D
Common Stock	03/01/2018		F(1)		3,458	D	$7.06	95,760	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
Restricted Stock Units (RSUs)	(2)	03/01/2018		M			2,927	(3)	(3)	Common Stock	2,927	$0.00	0	D
Restricted Stock Units (RSUs)	(2)	03/01/2018		M			834	(3)	(3)	Common Stock	834	$0.00	0	D
Restricted Stock Units (RSUs)	(2)	03/01/2018		M			2,125	(4)	(4)	Common Stock	2,125	$0.00	4,250	D
Restricted Stock Units (RSUs)	(2)	03/01/2018		M			600	(4)	(4)	Common Stock	600	$0.00	1,200	D
Performance-Based Restricted Stock Units (PSUs)	(5)	03/01/2018		M			10,000	(6)	(6)	Common Stock	10,000	$0.00	30,000	D

Explanation of Responses:

1. Disposition of shares exempt under Rule 16b-3 as payment of tax liability to Company by delivery or withholding securities incident to vesting of restricted stock shares.

2. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

3. The last vesting date for these RSUs was on March 1, 2018.

4. The remaining RSUs shall vest on each of March 1, 2019 and March 1, 2020.

5. Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

6. On March 10, 2017, Reporting Person was awarded a number of PSUs within a preset range, with the actual number contingent upon the achievement of certain criteria. The Compensation Committee of the Issuer's Board of Directors confirmed the achievement of the performance criteria on February 16, 2018 and, based on that assessment, determined the number of PSUs. The remaining PSUs will vest on each of March 1, 2019, March 1, 2020 and March 1, 2021.

Remarks:

	Lauren Walz, as attorney-in-fact for Kenneth L Mahaffey	03/05/2018
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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