First Solar (FSLR) CCO reports RSU vesting and 245-share tax sale

Rhea-AI Filing Summary

First Solar, Inc. Chief Commercial Officer Georges Antoun reported routine equity compensation activity and related tax share sales. On March 13, 2026, 587 restricted stock units granted on March 15, 2022 vested, converting into 587 shares of common stock under the company’s 2020 Omnibus Incentive Compensation Plan. The 2022 grant is scheduled to vest in 20% annual installments on each anniversary of the grant date. On March 16, 2026, 245 shares of common stock were sold by the issuer at $200.80 per share to satisfy tax withholding obligations tied to this vesting, rather than as a discretionary open-market sale. Following these transactions, Antoun directly holds 19,126 shares of First Solar common stock.

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^*

ANTOUN GEORGES

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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	03/13/2026		M		587(1)	A	$0	19,371	D
Common Stock	03/16/2026		S		245(2)	D	$200.8	19,126	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	(3)	03/13/2026		M			587	(4)	(4)	Common Stock	587	$0	587	D

Explanation of Responses:

1. Represents shares of common stock issued upon vesting of 20% of the restricted stock units granted on March 15, 2022.

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

3. 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.

4. The restricted stock units were granted on March 15, 2022 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on March 15, 2022 are scheduled to vest annually at a rate of 20% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

	/s/ Jason E. Dymbort, attorney-in-fact	03/17/2026
	** Signature of Reporting Person	Date
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FAQ

What insider transactions did First Solar (FSLR) report for Georges Antoun?

Georges Antoun reported vesting of restricted stock units and a related tax share sale. On March 13, 2026, 587 RSUs vested into common shares. On March 16, 2026, 245 shares were sold by the issuer to cover tax withholding obligations from that vesting.

How many First Solar (FSLR) shares vested for the CCO in this Form 4?

587 restricted stock units vested into 587 shares of First Solar common stock. These RSUs were part of an annual equity grant awarded on March 15, 2022, which is structured to vest in 20% increments on each anniversary of the grant date.

Why were 245 First Solar (FSLR) shares sold in this insider filing?

245 shares were sold by the issuer to satisfy tax withholding obligations. The sale at $200.80 per share on March 16, 2026 was connected to the March 13, 2026 vesting of restricted stock units, rather than a discretionary open-market sale by the executive.

What is the vesting schedule of Georges Antoun’s 2022 First Solar (FSLR) RSU grant?

The March 15, 2022 RSU grant vests 20% each year. The restricted stock units are scheduled to vest annually at a 20% rate on each anniversary of the grant date, beginning with the first anniversary, subject to the terms of First Solar’s 2020 Omnibus Incentive Compensation Plan.

How many First Solar (FSLR) shares does Georges Antoun hold after these transactions?

After these transactions, Georges Antoun directly holds 19,126 shares of common stock. This figure reflects the 587 shares received from RSU vesting and the 245 shares sold by the issuer to cover tax withholding obligations associated with that vesting.

What plan governs the restricted stock units in this First Solar (FSLR) Form 4?

The restricted stock units are issued under First Solar’s 2020 Omnibus Incentive Compensation Plan. Each RSU represents the right to receive one share of common stock upon vesting, aligning executive compensation with the company’s share performance over time.