First Solar (FSLR) executive sells 92 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

First Solar, Inc. executive Nathan B. Theurer sold 92 shares of common stock in an open‑market transaction. The sale occurred at a price of $196.95 per share and was executed under a pre‑arranged Rule 10b5‑1 trading plan adopted on May 15, 2025. Following this sale, his reported directly held common shares for this line item were 0.

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).

X

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^*

Theurer Nathan B.

(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)
	VP - Global Controller and CAO

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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	03/04/2026(1)		S		92	D	$196.95	0	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

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 15, 2025.

	/s/ Jason E. Dymbort, attorney-in-fact	03/05/2026
	** 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.

FAQ

What insider transaction did First Solar (FSLR) report for Nathan B. Theurer?

First Solar reported that executive Nathan B. Theurer sold 92 shares of common stock. The transaction was an open-market sale at $196.95 per share and was executed under a pre-arranged Rule 10b5-1 trading plan adopted on May 15, 2025.

At what price did the First Solar (FSLR) insider shares sell on this Form 4?

The 92 First Solar shares sold by Nathan B. Theurer were transacted at $196.95 per share. This price reflects the execution level for the open-market sale disclosed, completed under his previously adopted Rule 10b5-1 trading plan dated May 15, 2025.

Who is the insider involved in this First Solar (FSLR) Form 4 filing?

The insider is Nathan B. Theurer, who serves as First Solar’s Vice President – Global Controller and Chief Accounting Officer. He reported a single open-market sale of common stock, totaling 92 shares at $196.95 per share under a Rule 10b5-1 trading plan.

Was the First Solar (FSLR) insider sale made under a Rule 10b5-1 plan?

Yes, the sale was effected under a Rule 10b5-1 trading plan. The footnote states the plan was previously adopted by Nathan B. Theurer on May 15, 2025, indicating the transaction followed a pre-established trading schedule rather than being a discretionary same-day decision.

How many First Solar (FSLR) shares did the insider hold after this reported sale?

Following the reported open-market sale, the Form 4 shows Nathan B. Theurer with 0 directly held shares in this reported line of common stock. This figure reflects his direct ownership after selling 92 shares at $196.95 per share in the disclosed transaction.

What transaction code is used in the First Solar (FSLR) Form 4 filing?

The Form 4 lists transaction code “S,” indicating a sale in the open market or a private transaction. In this case, it represents Nathan B. Theurer’s open-market sale of 92 shares of First Solar common stock at a reported price of $196.95 per share.