Were Mark Widmar’s First Solar (FSLR) share sales made under a Rule 10b5-1 plan?

Yes. A footnote states the transaction was effected under a Rule 10b5-1 trading plan adopted on November 6, 2025. Such plans pre-schedule trades, so these sales were arranged in advance rather than decided on the trade date itself.

First Solar (FSLR) CEO Mark Widmar sells 4,815 shares in pre-set 10b5-1 trades

Q: How many First Solar (FSLR) shares did CEO Mark Widmar sell in this Form 4?

CEO Mark Widmar sold 4,815 shares of First Solar Common Stock. The Form 4 transaction summary aggregates 13 separate sale entries on May 21, 2026, all categorized as open-market sales of non-derivative shares at various prices around the mid-$240s to mid-$250s.

Q: Did the First Solar (FSLR) CEO sell derivatives or just common stock in this Form 4?

The filing shows sales only of Common Stock as non-derivative securities. The derivative transaction count is zero and the derivative position summary is empty, indicating no option exercises, conversions, or other derivative-related transactions were reported in this Form 4.

Q: How many separate transactions are reported in Mark Widmar’s First Solar (FSLR) Form 4?

The transaction summary lists 13 sale entries for May 21, 2026. Each entry represents an open-market sale of Common Stock, some reported as weighted average prices for multiple executions within specified intraday price ranges, according to the accompanying footnotes.

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

FIRST SOLAR, INC. Chief Executive Officer Mark R. Widmar reported a series of open-market sales of the company’s Common Stock. On May 21, 2026, he sold a total of 4,815 shares in multiple transactions at prices generally between about $240 and $256.96 per share. The filing states these trades were executed under a previously adopted Rule 10b5-1 trading plan dated November 6, 2025, meaning the sales were pre-scheduled rather than newly decided on that day. All transactions involved non-derivative Common Stock, and the Form 4 shows that he continues to hold shares directly after these sales.

Insights

CEO’s pre-planned sale of 4,815 First Solar shares looks routine.

The Form 4 shows CEO Mark Widmar sold 4,815 shares of FIRST SOLAR, INC. Common Stock on May 21, 2026. All trades are marked as open-market sales of non-derivative shares, with execution prices ranging from about $240 to $256.96 per share.

A key detail is the footnote confirming these transactions occurred under a Rule 10b5-1 trading plan adopted on November 6, 2025. Such plans are set up in advance, so the timing of the sales is less informative about the CEO’s current view of the stock and more indicative of ongoing diversification or liquidity management.

The filing’s transaction summary lists 13 sale entries and no option exercises or tax-related dispositions, and the derivative position table is empty, so this update is focused solely on common-share sales. The CEO continues to hold a meaningful direct stake after these trades, and there is no new earnings, guidance, or operational information included here.

Insider Trade Summary 10b5-1

Net Seller: 4,815 shares ($1,191,378)

Net Sell 13 txns

Insider Widmar Mark R

Role Chief Executive Officer

Sold 4,815 shs ($1.19M)

Type	Security	Shares	Price	Value
Sale	Common Stock	672	$240.10	$161K
Sale	Common Stock	362	$241.40	$87K
Sale	Common Stock	136	$244.62	$33K
Sale	Common Stock	229	$246.23	$56K
Sale	Common Stock	98	$247.53	$24K
Sale	Common Stock	179	$248.80	$45K
Sale	Common Stock	1,131	$249.70	$282K
Sale	Common Stock	472	$250.61	$118K
Sale	Common Stock	569	$251.64	$143K
Sale	Common Stock	261	$254.29	$66K
Sale	Common Stock	179	$255.31	$46K
Sale	Common Stock	6	$256.96	$2K
Sale	Common Stock	521	$243.19	$127K

Holdings After Transaction: Common Stock — 93,176 shares (Direct, null)

Footnotes (1)

This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025. This transaction was executed in multiple trades at prices ranging from $240 to $240.61. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $241 to $241.61. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $244.51 to $245.27. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $245.83 to $246.62. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $247.11 to $248.06. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $248.13 to $249.11. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $249.21 to $250.19. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $250.21 to $251.20. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $251.28 to $252. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $253.73 to $254.46. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $255.24 to $255.34. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. This transaction was executed in multiple trades at prices ranging from $242.79 to $243.73. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Shares sold: 4,815 shares Number of sale entries: 13 transactions Highest reported sale price: $256.96 per share +3 more

6 metrics

Shares sold 4,815 shares Total common shares sold on May 21, 2026

Number of sale entries 13 transactions Separate sale lines reported in Form 4

Highest reported sale price $256.96 per share One transaction price for Common Stock

Approximate low end of sale range $240 per share Lower bound of price ranges in footnotes

Rule 10b5-1 plan adoption date November 6, 2025 Date CEO’s trading plan was adopted

Net buy/sell direction -4,815 shares Net common-share change from transactions

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, open-market sale, Common Stock, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025."

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.

weighted average sale price financial

"The price reported above reflects the weighted average sale price for the transactions reported on this line."

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.

non-derivative financial

"transaction_type: "non-derivative""

Form 4 Insider Transactions: What Each Field Means →

05/22/2026 - 04:28 PM

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^*

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)
05/21/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/21/2026⁽¹⁾		S		672	D	$240.1⁽²⁾	93,176	D
Common Stock	05/21/2026⁽¹⁾		S		362	D	$241.4⁽³⁾	92,814	D
Common Stock	05/21/2026⁽¹⁾		S		136	D	$244.62⁽⁴⁾	92,678	D
Common Stock	05/21/2026⁽¹⁾		S		229	D	$246.23⁽⁵⁾	92,449	D
Common Stock	05/21/2026⁽¹⁾		S		98	D	$247.53⁽⁶⁾	92,351	D
Common Stock	05/21/2026⁽¹⁾		S		179	D	$248.8⁽⁷⁾	92,172	D
Common Stock	05/21/2026⁽¹⁾		S		1,131	D	$249.7⁽⁸⁾	91,041	D
Common Stock	05/21/2026⁽¹⁾		S		472	D	$250.61⁽⁹⁾	90,569	D
Common Stock	05/21/2026⁽¹⁾		S		569	D	$251.64⁽¹⁰⁾	90,000	D
Common Stock	05/21/2026⁽¹⁾		S		261	D	$254.29⁽¹¹⁾	89,739	D
Common Stock	05/21/2026⁽¹⁾		S		179	D	$255.31⁽¹²⁾	89,560	D
Common Stock	05/21/2026⁽¹⁾		S		6	D	$256.96	89,554	D
Common Stock	05/21/2026⁽¹⁾		S		521	D	$243.19⁽¹³⁾	89,033	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person on November 6, 2025.

2. This transaction was executed in multiple trades at prices ranging from $240 to $240.61. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. This transaction was executed in multiple trades at prices ranging from $241 to $241.61. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

4. This transaction was executed in multiple trades at prices ranging from $244.51 to $245.27. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. This transaction was executed in multiple trades at prices ranging from $245.83 to $246.62. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. This transaction was executed in multiple trades at prices ranging from $247.11 to $248.06. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

7. This transaction was executed in multiple trades at prices ranging from $248.13 to $249.11. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

8. This transaction was executed in multiple trades at prices ranging from $249.21 to $250.19. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

9. This transaction was executed in multiple trades at prices ranging from $250.21 to $251.20. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

10. This transaction was executed in multiple trades at prices ranging from $251.28 to $252. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

11. This transaction was executed in multiple trades at prices ranging from $253.73 to $254.46. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

12. This transaction was executed in multiple trades at prices ranging from $255.24 to $255.34. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

13. This transaction was executed in multiple trades at prices ranging from $242.79 to $243.73. The price reported above reflects the weighted average sale price for the transactions reported on this line. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Jason E. Dymbort, attorney-in-fact	05/22/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

How many First Solar (FSLR) shares did CEO Mark Widmar sell in this Form 4?

CEO Mark Widmar sold 4,815 shares of First Solar Common Stock. The Form 4 transaction summary aggregates 13 separate sale entries on May 21, 2026, all categorized as open-market sales of non-derivative shares at various prices around the mid-$240s to mid-$250s.

At what prices did the First Solar (FSLR) CEO’s Form 4 sales occur?

The reported sales occurred at prices generally between about $240 and $256.96 per share. Several trades used weighted average sale prices, and footnotes explain that each line reflects multiple executions within specified price ranges on May 21, 2026.

Did the First Solar (FSLR) CEO sell derivatives or just common stock in this Form 4?

The filing shows sales only of Common Stock as non-derivative securities. The derivative transaction count is zero and the derivative position summary is empty, indicating no option exercises, conversions, or other derivative-related transactions were reported in this Form 4.

How many separate transactions are reported in Mark Widmar’s First Solar (FSLR) Form 4?

The transaction summary lists 13 sale entries for May 21, 2026. Each entry represents an open-market sale of Common Stock, some reported as weighted average prices for multiple executions within specified intraday price ranges, according to the accompanying footnotes.

Does First Solar (FSLR) CEO Mark Widmar still own shares after these Form 4 sales?

Yes. The Form 4 indicates that Mark Widmar continues to hold First Solar Common Stock directly after the reported sales. Each transaction line includes a post-transaction share balance, showing that his remaining direct ownership was still substantial following the 4,815 shares sold.