First Solar (NASDAQ: FSLR) VP executes small 31-share sale under 10b5-1 plan

Rhea-AI Filing Summary

FIRST SOLAR, INC. executive Nathan B. Theurer, VP – Global Controller and CAO, completed an open-market sale of 31 shares of Common Stock at $218.16 per share. The sale left him with 0 directly held shares reported in this filing and was executed under a pre-established Rule 10b5-1 trading plan previously adopted on May 15, 2025.

Insights

Equity compensation and governance analyst

Small pre-planned insider sale with limited informational value.

The filing shows VP and CAO Nathan B. Theurer executed an open-market sale of 31 shares of FIRST SOLAR, INC. Common Stock at $218.16 per share. The transaction code is "S," confirming it as a sale, and it reduced his directly reported holdings to zero in this filing.

A footnote states the trade was effected under a previously adopted Rule 10b5-1 trading plan, indicating it was pre-planned rather than a discretionary decision tied to short-term news. The small size of 31 shares and the pre-arranged nature suggest a routine, low-signal transaction rather than a thesis-changing event for shareholders.

Insider Trade Summary 10b5-1

Net Seller: 31 shares ($6,763)

Net Sell 1 txn

Insider Theurer Nathan B.

Role VP - Global Controller and CAO

Sold 31 shs ($7K)

Type	Security	Shares	Price	Value
Sale	Common Stock	31	$218.16	$7K

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

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 31 shares Sale price per share: $218.16 per share Direct holdings after transaction: 0 shares +2 more

5 metrics

Shares sold 31 shares Open-market sale of Common Stock on May 6, 2026

Sale price per share $218.16 per share Price for 31 Common Stock shares sold by Nathan B. Theurer

Direct holdings after transaction 0 shares Total directly held Common Stock after reported sale

Transaction code S Sale in open market or private transaction

Net buy/sell shares -31 shares Net effect across all reported buy/sell transactions

Key Terms

Rule 10b5-1 trading plan, open-market sale, Common Stock, Form 4, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted..."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

transaction code "S" regulatory

""transaction_code": "S""

Form 4 Insider Transactions: What Each Field Means →

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 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)
	VP - Global Controller and CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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	05/06/2026(1)		S		31	D	$218.16	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	05/08/2026
	** 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)

FAQ

What insider transaction did FSLR executive Nathan Theurer report on this Form 4?

Nathan B. Theurer reported an open-market sale of 31 shares of FIRST SOLAR, INC. Common Stock. The shares were sold at a price of $218.16 per share, and after the sale, he reported holding 0 shares directly in this filing.

Was the FSLR insider sale by Nathan Theurer part of a Rule 10b5-1 trading plan?

Yes. A footnote explains the 31-share sale at $218.16 per share was effected pursuant to a Rule 10b5-1 trading plan previously adopted by Nathan B. Theurer on May 15, 2025, indicating the transaction was pre-planned.

How many First Solar (FSLR) shares did Nathan Theurer hold after this reported sale?

Following the reported open-market sale of 31 shares of Common Stock, Nathan B. Theurer’s directly held shares totaled 0 in this Form 4. The filing does not list any remaining derivative positions for him in the derivative section.

What transaction code is used in Nathan Theurer’s FSLR Form 4 filing and what does it mean?

The transaction uses code "S", described as a sale in open market or private transaction. In this case, it reflects an open-market sale of 31 Common Stock shares at $218.16 per share by Nathan B. Theurer of FIRST SOLAR, INC.

Does the FSLR Form 4 show any option exercises or derivative transactions for Nathan Theurer?

No. The Form 4 summary indicates no derivative transactions, with derivative transaction count and exercise shares reported as zero. The only reported activity is the sale of 31 shares of Common Stock in a non-derivative open-market transaction.