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 * Widmar Mark R   2. Issuer Name and Ticker or Trading Symbol FIRST SOLAR, INC. [FSLR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O FIRST SOLAR, INC., 350 WEST WASHINGTON STREET, SUITE 600 3. Date of Earliest Transaction (Month/Day/Year) 11/06/2015 (Street) TEMPE, AZ 85281-1244 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 11/06/2015   M   88,333 (1) A $ 0 135,208 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

Performance Units

(2)

11/06/2015

M

88,333

(3)

(3)

Common Stock

88,333

$ 0

176,667

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Widmar Mark R C/O FIRST SOLAR, INC. 350 WEST WASHINGTON STREET, SUITE 600 TEMPE, AZ 85281-1244			Chief Financial Officer

Signatures

/s/ Peter C. Bartolino, Attorney-in-fact		11/10/2015
**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)	Represents shares of common stock issuable upon vesting of the first tranche of the Key Senior Talent Performance Program ("KSTEPP") performance units granted to the reporting person on May 7, 2012. On November 6, the Compensation Committee of the Issuer's Board of Directors certified the Issuer's achievement of the vesting condition for the first tranche of the KSTEPP performance units.
(2)	Each performance unit represents the right to receive, upon vesting, one share of the Issuer's common stock.
(3)	The performance units were granted on May 7, 2012 in accordance with the Issuer's 2010 Omnibus Incentive Compensation Plan and shall vest in two separate tranches, each contingent upon the achievement of a threshold performance goal and pre-established performance criteria within a defined performance period. Performance Units will not vest unless the participant is continuously employed by the Issuer through the applicable vesting date, unless the participant is eligible, in certain pre-established circumstances, for a pro-rata settlement. In the event of a change of control of the Issuer during the performance period, regardless of whether the threshold performance goal has been achieved, 25% of the then unvested portion of the performance unit will vest or a different amount as determined by the Compensation Committee of the Board of Directors. For more information, see Part II, Item 5 Other Information, of the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 9, 2015.

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