First Solar VP sells 324 shares in 10b5-1 trade

FIRST SOLAR, INC. executive Nathan B. Theurer, VP - Global Controller and CAO, sold 324 shares of Common Stock in an open-market transaction at $195.70 per share.

Rhea-AI Filing Summary

FIRST SOLAR, INC. executive Nathan B. Theurer, VP - Global Controller and CAO, sold 324 shares of Common Stock in an open-market transaction at $195.70 per share. Following this sale, his directly held Common Stock position reported in this filing is 0 shares. The transaction was carried out under a previously adopted Rule 10b5-1 trading plan, indicating it was pre-scheduled rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 324 shares

Net Sell 1 txn

Insider Theurer Nathan B.

Role VP - Global Controller and CAO

Sold 324 shs ($63K)

Type	Security	Shares	Price	Value
Sale	Common Stock	324	$195.70	$63K

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (1)

1. F1. This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on May 15, 2025.

FAQ

What did First Solar (FSLR) executive Nathan B. Theurer report in this Form 4?

Nathan B. Theurer reported an open-market sale of 324 shares of First Solar Common Stock. The shares were sold at $195.70 per share, and after the transaction his directly held Common Stock position reported in this filing became 0 shares.

Was the First Solar (FSLR) insider sale by Nathan B. Theurer pre-planned?

Yes, the sale was executed under a Rule 10b5-1 trading plan previously adopted by Nathan B. Theurer. Such plans pre-schedule trades, meaning the timing of this 324-share sale at $195.70 per share was set in advance.

How many First Solar (FSLR) shares did Nathan B. Theurer sell and at what price?

He sold 324 shares of First Solar Common Stock at $195.70 per share in an open-market transaction. This Form 4 shows the sale as a non-derivative transaction and reports no remaining directly held Common Stock afterward.

What is Nathan B. Theurer’s role at First Solar (FSLR) and how does it relate to this Form 4?

Nathan B. Theurer is First Solar’s VP - Global Controller and CAO. The Form 4 records his personal open-market sale of 324 Common Stock shares at $195.70 each, reducing his directly reported Common Stock holdings to 0 shares.

Does the Form 4 indicate any option exercises or derivative activity for First Solar (FSLR)?

No, this Form 4 only reports a single non-derivative transaction: an open-market sale of 324 Common Stock shares at $195.70 per share. The derivative section shows no option exercises or other derivative transactions in this filing.

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Accepted by SEC EDGAR 03/11/2026 - 05:29 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).

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)
03/10/2026

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	03/10/2026(1)		S		324	D	$195.7	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	03/11/2026
	** 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).
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