Mark R. Widmar - 04 May 2026 Form 4 Insider Report for FIRST SOLAR, INC. (FSLR)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: FSLR
Reported as of: 04 May 2026
Net transaction value: -$329,051
SEC form: 4
Accepted by SEC: 05 May 2026, 19:42:05 UTC
Prior SEC filing: 17 Mar 2026
Next SEC filing: 13 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Jason E. Dymbort, attorney-in-fact

Key filing fact

Mark R. Widmar filed Form 4 for FIRST SOLAR, INC. (FSLR) on 05 May 2026.

Key facts

This page summarizes Mark R. Widmar's Form 4 filing for FIRST SOLAR, INC. (FSLR).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 05 May 2026, 19:42.

Change

Previous filing in this sequence was filed on 17 Mar 2026.
Current net transaction value: -$329,051.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001362208 Primary reporting owner

Widmar Mark R

Relationship: Chief Executive Officer, Director
Address: C/O FIRST SOLAR, INC., 4300 E CAMELBACK ROAD, SUITE 220, PHOENIX
Signature: /s/ Jason E. Dymbort, attorney-in-fact
Signature date: 05 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FSLR transaction

Common Stock

Options Exercise

Transaction value
Shares: +3,802
Change %: +3.7%
Price: $0.000000^*
Shares after: 106,600
Date: 04 May 2026
Ownership: Direct
Footnotes: F1

FSLR transaction

Common Stock

Sale

Transaction value: $329,051
Shares: -1,526
Change %: -1.4%
Price: $215.63
Shares after: 105,074
Date: 05 May 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

FSLR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -3,802
Change %: -25%
Price: $0.000000^*
Shares after: 11,407
Date: 04 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 3,802
Exercise price
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

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

Footnote F2

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

Footnote 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.

Footnote 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.