First Solar CPO vests RSUs, covers tax with shares

Rhea-AI Filing Summary

FIRST SOLAR, INC. Chief Product Officer Patrick James Buehler reported routine equity compensation activity. On May 4, 2026, 553 restricted stock units vested, converting into 553 shares of common stock. These RSUs represent 25% of an award granted on May 1, 2025 that vests annually in 25% installments.

In connection with this vesting, 235 shares of common stock were sold by the issuer to satisfy tax withholding obligations, rather than as a discretionary market sale. After these transactions, Buehler directly holds 7,406 shares of common stock and 1,660 restricted stock units that will settle into shares upon future vesting.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Buehler Patrick James

Role Chief Product Officer

Sold 235 shs ($51K)

Approx. gross sale proceeds $51K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Sale	Common Stock	235	$215.63	$51K
Exercise	Restricted Stock Units	553	$0.00	$0.00
Exercise	Common Stock	553	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 1,660 contracts (Direct); Common Stock — 7,406 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: 235 shares Price per share on disposition: $215.63 per share RSUs vested: 553 units +3 more

6 metrics

Shares sold for tax withholding 235 shares Common stock used to satisfy tax obligations on RSU vesting

Price per share on disposition $215.63 per share Sale price for 235 common shares on May 5, 2026

RSUs vested 553 units Restricted stock units vested and converted into common shares on May 4, 2026

Common shares held after transactions 7,406 shares Direct First Solar common stock holdings after May 5, 2026 transactions

RSUs remaining after vesting 1,660 units Restricted stock units outstanding following May 4, 2026 vesting

Grant vesting rate 25% annually Vesting schedule for RSUs granted May 1, 2025

Key Terms

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

4 terms

restricted stock units financial

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

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.

2020 Omnibus Incentive Compensation Plan financial

"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."

annual equity grant financial

"The restricted stock units were granted on May 1, 2025 as part of the Issuer's annual equity grant to executive officers."

tax withholding obligations financial

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

FAQ

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

What insider transactions did FSLR Chief Product Officer Patrick Buehler report?

Patrick Buehler reported vesting of 553 restricted stock units on May 4, 2026, which converted into 553 common shares. In a related step, 235 of those shares were sold by the issuer to cover tax withholding obligations tied to the vesting event.

How many First Solar (FSLR) shares does Patrick Buehler hold after this Form 4?

After these transactions, Patrick Buehler directly holds 7,406 shares of First Solar common stock. He also holds 1,660 restricted stock units, each representing the right to receive one share of common stock upon future vesting under the company’s 2020 incentive plan.

Were Patrick Buehler’s FSLR share dispositions open-market sales or tax-related?

The disposition of 235 First Solar shares was tax-related. Footnotes state these shares were sold by the issuer to satisfy tax withholding obligations arising from the vesting of restricted stock units, rather than representing a discretionary open-market sale by Buehler.

What is the origin and vesting schedule of Patrick Buehler’s FSLR restricted stock units?

The restricted stock units were granted on May 1, 2025 as part of First Solar’s annual equity grant to executive officers. They vest at a rate of 25% on each anniversary of the grant date, with each vested unit delivering one share of common stock.

How many restricted stock units remain for Patrick Buehler after the latest FSLR vesting?

Following the May 4, 2026 vesting of 553 restricted stock units, Patrick Buehler has 1,660 restricted stock units outstanding. Each unit entitles him to receive one share of First Solar common stock when it vests in line with the grant’s annual schedule.

What plan governs Patrick Buehler’s restricted stock units in First Solar (FSLR)?

Buehler’s restricted stock units are issued under First Solar’s 2020 Omnibus Incentive Compensation Plan. Under this plan, each restricted stock unit delivers one share of common stock upon vesting, aligning executive compensation with long-term shareholder interests through equity awards.

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

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Accepted by SEC EDGAR 05/05/2026 - 07:52 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
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).

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^*

Buehler Patrick James

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Product 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		553(1)	A	$0	7,641	D
Common Stock	05/05/2026		S		235(2)	D	$215.63	7,406	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			553	(4)	(4)	Common Stock	553	$0	1,660	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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)