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  4. [Form 4] FIRST SOLAR, INC. Insider Trading Activity

FIRST SOLAR, INC. reported $5.2B in revenue and $1.5B in net income for fiscal 2025. See the full FSLR financial statements: income statement, balance sheet, cash flow and ratios, each column linked to its SEC filing.

First Solar CTO sells $160K in stock under plan

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

FIRST SOLAR, INC. (FSLR) reported that Chief Technology Officer Markus Gloeckler sold 800 shares of common stock on September 1, 2026 in a sale described as an open market or private transaction at $200 per share. After this transaction, he directly holds 5,842 shares. The sale was carried out under a Rule 10b5-1 trading plan adopted on May 4, 2026.

Positive

  • None.

Negative

  • None.
Insider Gloeckler Markus
Role Chief Technology Officer
Sold 800 shs ($160K)
Type Security Shares Price Value
Sale Common Stock F1 800 $200.00 $160K
Holdings After Transaction: Common Stock — 5,842 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 4, 2026.
Shares sold 800 shares Common stock sale reported for September 1, 2026 by the Chief Technology Officer
Sale price per share $200.00 per share Price for the 800 shares of common stock sold on September 1, 2026
Approximate transaction value $160,000 Computed from 800 shares sold at $200.00 per share
Shares held after transaction 5,842 shares Direct ownership of common stock by Markus Gloeckler after the reported sale
Rule 10b5-1 plan adoption date May 4, 2026 Adoption date of the trading plan under which the September 1, 2026 sale was executed
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 May 4, 2026."
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 or private transaction market
"Sale in open market or private transaction"

FAQ

What insider transaction did FSLR report for Markus Gloeckler?
FIRST SOLAR, INC. reported that Chief Technology Officer Markus Gloeckler sold 800 shares of common stock on September 1, 2026 in an open market or private transaction at $200 per share, under a pre-established Rule 10b5-1 trading plan.

How many FIRST SOLAR (FSLR) shares did Markus Gloeckler sell and at what price?
Markus Gloeckler sold 800 shares of FIRST SOLAR common stock at $200 per share on September 1, 2026, resulting in a reported transaction value of approximately $160,000 before any fees or taxes.

How many FIRST SOLAR (FSLR) shares does Markus Gloeckler hold after this transaction?
After the September 1, 2026 sale, Markus Gloeckler directly holds 5,842 shares of FIRST SOLAR common stock, according to the reported post-transaction ownership figure.

Was the FSLR insider sale by Markus Gloeckler under a Rule 10b5-1 plan?
Yes. The filing states that the September 1, 2026 sale of 800 FIRST SOLAR shares by Markus Gloeckler was effected pursuant to a Rule 10b5-1 trading plan that he previously adopted on May 4, 2026.

What role does Markus Gloeckler hold at FIRST SOLAR (FSLR)?
Markus Gloeckler is identified as the Chief Technology Officer of FIRST SOLAR, INC. in connection with the reported September 1, 2026 sale of 800 shares of common stock.

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SEC Form 4
FORM 4UNITED 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*
Gloeckler Markus
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Technology Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock09/01/2026(1)S800D$2005,842D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 4, 2026.
/s/ Jason E. Dymbort, attorney-in-fact09/02/2026
** Signature of Reporting PersonDate
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