First Solar (FSLR) CEO sells shares and receives new RSU award

Rhea-AI Filing Summary

FIRST SOLAR, INC. Chief Executive Officer Mark R. Widmar reported a mix of equity awards, vesting, and share sales. On March 6, 2026, restricted stock units representing 13,629 shares of common stock vested and were converted into common shares, and he received a new grant of 12,685 restricted stock units under the 2020 Omnibus Incentive Compensation Plan. On March 9, 2026, he sold a total of 5,537 shares of common stock at $190.36 per share in transactions described as satisfying tax withholding obligations related to the RSU vesting. Following these transactions, Widmar held 99,879 shares of First Solar common stock directly.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Widmar Mark R

(Last) (First) (Middle)

C/O FIRST SOLAR, INC.

4300 E CAMELBACK ROAD, SUITE 220

(Street)

PHOENIX AZ 85018

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FIRST SOLAR, INC. [ FSLR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/06/2026

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	03/06/2026		M		5,101(1)	A	$0	96,888	D
Common Stock	03/06/2026		M		1,178(2)	A	$0	98,066	D
Common Stock	03/06/2026		M		3,156(3)	A	$0	101,222	D
Common Stock	03/06/2026		M		4,194(4)	A	$0	105,416	D
Common Stock	03/09/2026		S		2,072(5)	D	$190.36	103,344	D
Common Stock	03/09/2026		S		480(5)	D	$190.36	102,864	D
Common Stock	03/09/2026		S		1,282(5)	D	$190.36	101,582	D
Common Stock	03/09/2026		S		1,703(5)	D	$190.36	99,879	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	(6)	03/06/2026		M			5,101	(7)	(7)	Common Stock	5,101	$0	0	D
Restricted Stock Units	(6)	03/06/2026		M			1,178	(8)	(8)	Common Stock	1,178	$0	2,354	D
Restricted Stock Units	(6)	03/06/2026		M			3,156	(9)	(9)	Common Stock	3,156	$0	6,313	D
Restricted Stock Units	(6)	03/06/2026		M			4,194	(10)	(10)	Common Stock	4,194	$0	12,584	D
Restricted Stock Units	(6)	03/06/2026		A		12,685		(11)	(11)	Common Stock	12,685	$0	12,685	D

Explanation of Responses:

1. Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 6, 2021.

2. Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 6, 2023.

3. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2024.

4. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on March 6, 2025.

5. Represents shares of common stock sold by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units.

6. Each restricted stock unit represents the right to receive, upon vesting, one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan.

7. The restricted stock units were granted on March 6, 2021 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2021 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

8. The restricted stock units were granted on March 6, 2023 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2023 vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

9. The restricted stock units were granted on March 6, 2024 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2024 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

10. The restricted stock units were granted on March 6, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

11. The restricted stock units were granted on March 6, 2026 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 6, 2026 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

	/s/ Jason E. Dymbort, attorney-in-fact	03/10/2026
	** Signature of Reporting Person	Date
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FAQ

What did First Solar (FSLR) CEO Mark Widmar report in this Form 4 filing?

CEO Mark Widmar reported RSU vesting, a new RSU grant, and related share sales. Several restricted stock unit awards vested into 13,629 common shares, he received 12,685 new RSUs, and he sold 5,537 shares, largely to cover tax withholding obligations.

How many First Solar (FSLR) shares did the CEO sell and at what price?

Mark Widmar sold 5,537 shares of First Solar common stock. The reported sale price was $190.36 per share, with the transactions on March 9, 2026 described as satisfying tax withholding obligations linked to restricted stock unit vesting.

What RSU activity did First Solar (FSLR) disclose for its CEO in this Form 4?

The filing shows multiple restricted stock unit tranches vesting into 13,629 common shares on March 6, 2026. It also reports a new grant of 12,685 RSUs, all issued under First Solar’s 2020 Omnibus Incentive Compensation Plan for executive equity awards.

How many First Solar (FSLR) shares does the CEO hold after these transactions?

After the reported RSU vesting, conversions, and share sales, Mark Widmar directly holds 99,879 shares of First Solar common stock. This figure reflects his position immediately following the final sale transaction on March 9, 2026 in the Form 4.

Were the First Solar (FSLR) CEO’s share sales open-market trades or tax-related?

The sales are coded as open-market transactions but a footnote explains they represent shares sold by the issuer to satisfy certain tax withholding obligations arising from restricted stock unit vesting, indicating the activity is primarily tax-related rather than a discretionary portfolio move.

What vesting schedules apply to the First Solar (FSLR) CEO’s restricted stock units?

Footnotes state RSUs granted on March 6, 2021 and March 6, 2023 vest 20% annually on each anniversary, while RSUs granted on March 6, 2024, 2025, and 2026 vest 25% annually, all under First Solar’s 2020 Omnibus plan.