First Solar CEO reports RSU vesting and tax share sale

First Solar, Inc. Chief Executive Officer Mark R. Widmar reported routine equity compensation activity involving restricted stock units and related tax withholding.

Rhea-AI Filing Summary

First Solar, Inc. Chief Executive Officer Mark R. Widmar reported routine equity compensation activity involving restricted stock units and related tax withholding. On May 4, 2026, 3,802 restricted stock units vested, issuing the same number of common shares at a stated price of $0.00 per share under the 2020 Omnibus Incentive Compensation Plan.

In connection with this vesting, 1,526 common shares were sold by the company to satisfy tax withholding obligations, rather than as a discretionary open-market sale. Following these transactions, Widmar directly owns 105,074 shares of First Solar common stock and holds 11,407 restricted stock units that remain subject to future vesting.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Widmar Mark R

Role Chief Executive Officer

Sold 1,526 shs ($329K)

Approx. gross sale proceeds $329K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Sale	Common Stock	1,526	$215.63	$329K
Exercise	Restricted Stock Units	3,802	$0.00	$0.00
Exercise	Common Stock	3,802	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 11,407 contracts (Direct); Common Stock — 105,074 shares (Direct)

Footnotes (4)

1. F1. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on May 1, 2025.
2. F2. Represents shares of common stock sold by the Issuer to satisfy certain tax withholding obligations with the vesting of the restricted stock units.
3. F3. 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. F4. The restricted stock units were granted on May 1, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on May 1, 2025 vest annually at a rate of 25% on each anniversary of the grant date, commencing on the first anniversary of the grant date.

Key Figures

Shares sold for tax withholding: 1,526 shares at $215.63 RSUs vested and converted: 3,802 units/shares Shares owned after transactions: 105,074 shares +2 more

5 metrics

Shares sold for tax withholding 1,526 shares at $215.63 Common stock sold to satisfy tax obligations with RSU vesting

RSUs vested and converted 3,802 units/shares Restricted stock units vested on May 4, 2026

Shares owned after transactions 105,074 shares Direct common stock ownership after May 5, 2026 sale

RSUs outstanding after vesting 11,407 units Restricted stock units remaining after 3,802 vested

RSU grant vesting rate 25% annually RSUs granted May 1, 2025 vest 25% each year on anniversaries

Key Terms

restricted stock units, tax withholding obligations, 2020 Omnibus Incentive Compensation Plan

3 terms

restricted stock units financial

"Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares of common stock sold by the Issuer to satisfy certain tax withholding obligations"

2020 Omnibus Incentive Compensation Plan financial

"one share of the Issuer's common stock in accordance with the Issuer's 2020 Omnibus Incentive Compensation Plan"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

Mark Widmar reported vesting of 3,802 restricted stock units that converted into common shares, and a related sale of 1,526 shares to cover tax withholding. These are routine compensation and tax events rather than discretionary market trades.

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

After the reported transactions, CEO Mark Widmar directly owns 105,074 shares of First Solar common stock. He also continues to hold 11,407 restricted stock units, which represent additional shares that may be delivered as they vest over time.

Were the First Solar (FSLR) CEO’s reported share sales open-market dispositions?

The filing states 1,526 shares were sold by First Solar to satisfy tax withholding obligations tied to restricted stock unit vesting. This is a tax-related disposition, not a discretionary open-market sale reflecting a change in the CEO’s market outlook.

What is the vesting schedule of the First Solar (FSLR) CEO’s restricted stock units?

The restricted stock units granted on May 1, 2025 vest in four equal annual installments of 25% each. Vesting occurs on every anniversary of the grant date, beginning on the first anniversary, subject to the terms of the company’s 2020 incentive plan.

At what price were the vested First Solar (FSLR) shares and tax shares recorded?

The 3,802 vested restricted stock units and corresponding common shares were recorded at a transaction price of $0.00 per share, reflecting that they were compensation awards, not purchased shares in the market for cash consideration.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/05/2026 - 07:42 PM Learn about SEC filing dates

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
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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).

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 ARIZONA 85018

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	05/04/2026		M		3,802(1)	A	$0	106,600	D
Common Stock	05/05/2026		S		1,526(2)	D	$215.63	105,074	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)	05/04/2026		M			3,802	(4)	(4)	Common Stock	3,802	$0	11,407	D

Explanation of Responses:

1. Represents shares of common stock issued upon vesting of 25% of the restricted stock units granted on May 1, 2025.

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 May 1, 2025 as part of the Issuer's annual equity grant to executive officers. The restricted stock units granted on May 1, 2025 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	05/05/2026
	** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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* Form 4: SEC 1474 (03-26)