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FIRST SOLAR, INC. (FSLR) S&P 500 XNAS SEMICONDUCTORS & RELATED DEVICES Net insider selling (90d)
Latest FSLR Insider Trades
About FIRST SOLAR, INC. (FSLR) First Solar designs and manufactures solar photovoltaic panels, modules, and systems for use in utility-scale development projects. The company's solar modules use cadmium telluride to convert sunlight into electricity. This is commonly called thin-film technology. First Solar is the world's largest thin-film solar module manufacturer. It has production lines in Vietnam, Malaysia, the United States, and India.
Headquarters PHOENIX, AZ
Employees 7,900
Listed 2006
Exchange XNAS https://www.firstsolar.com SEC filings for FSLR on EDGAR
90-Day SEC Filing Activity Form 4 transaction type Transactions Shares Total value Open-market sale 8 18,081 $4.36M Grant or award 9 2,097 Option exercise 2 874
FSLR Insider Transactions (Form 4) 118 150 Form 4 filings on record, the earliest from Oct 1, 2024, newest first. Filing history page 3 of 3.
Date Insider Transaction Security Shares Price Value Mar 6, 2026 MK Michael Koralewski - Officer Option exercise Restricted Stock Units 189
Recent FSLR Form 8-K Filings 4
Recent FSLR Form 144 Notices of Proposed Sale 3 A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
Filed Filer Relationship Shares Market value Notice Aug 17, 2026 Sloan Samantha L. Officer 127 $28K View on EDGAR Aug 11, 2026 Dymbort Jason E. Officer
FSLR Insider Trading - FAQ
What is the latest insider trade for FSLR? FIRST SOLAR, INC. (FSLR) had 15 insider filings in the last 90 days, with the most recent on 2026-08-18. The full record for FSLR runs to 150 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying FSLR stock? No insider purchases of FSLR were filed in the last 90 days.
How many insiders are selling FSLR stock? 8 insider sales of FSLR were filed in the last 90 days, totaling $4.36M.
Where can I see FSLR SEC filings (Form 4, 10-K, 10-Q, 8-K)? This page tracks FSLR Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow FSLR insider buys? Create a free InsiderAlpha account and press Watch on this page to add FSLR to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Information Technology Companies with Insider Activity Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Related Companies - Recent Insider Activity What is SEC Form 4? The filing insiders must submit within two business days of a trade, and how to read its transaction codes. Track FSLR insider activity as it files Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
Sign up free Open-market sale
$923K
Market cap $21.97B
P/E ratio -
Dividend yield -
Average volume 2.33M
52 week high $320.95
52 week low $182.99
Today's high $211.15
Today's low $202.10
Open $209.62
Volume 1.45M
Previous close $210.10
Shares outstanding 107.47M Market cap
$21.97B
7,900 employees
FSLR Insider Sentiment - Last 90 Days Share of open-market insider dollar volume that was buying versus selling, from SEC Form 4 filings.
0% Buying 100% Selling
0 insider purchases totaling $0 against 8 sales totaling $4.36M.
Most-Active FSLR Insiders - Last 90 Days 10 Tax withholding / forfeiture 1 67
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
Mar 6, 2026 SS Samantha L. Sloan - Officer Option exercise Restricted Stock Units 244 $0.00 -
Mar 6, 2026 SS Samantha L. Sloan - Officer Option exercise Restricted Stock Units 124 $0.00 -
Mar 6, 2026 SS Samantha L. Sloan - Officer Option exercise Restricted Stock Units 142 $0.00 -
Mar 6, 2026 SS Samantha L. Sloan - Officer Option exercise Restricted Stock Units 171 $0.00 -
Mar 6, 2026 SS Samantha L. Sloan - Officer Grant or award Restricted Stock Units 1,692 $0.00 -
Mar 6, 2026 NT Nathan B. Theurer - Officer Option exercise Restricted Stock Units 95 $0.00 -
Mar 6, 2026 NT Nathan B. Theurer - Officer Option exercise Restricted Stock Units 171 $0.00 -
Mar 6, 2026 NT Nathan B. Theurer - Officer Grant or award Restricted Stock Units 635 $0.00 -
Mar 6, 2026 NT Nathan B. Theurer - Officer Option exercise Restricted Stock Units 133 $0.00 -
Mar 6, 2026 NT Nathan B. Theurer - Officer Option exercise Restricted Stock Units 82 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Common Stock 3,156 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Common Stock 4,194 $0.00 -
Mar 9, 2026 MW Mark R. Widmar - Officer Open-market sale Common Stock 2,072 $190.36 $394K
Mar 9, 2026 MW Mark R. Widmar - Officer Open-market sale Common Stock 480 $190.36 $91K
Mar 9, 2026 MW Mark R. Widmar - Officer Open-market sale Common Stock 1,282 $190.36 $244K
Mar 9, 2026 MW Mark R. Widmar - Officer Open-market sale Common Stock 1,703 $190.36 $324K
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Restricted Stock Units 5,101 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Restricted Stock Units 1,178 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Restricted Stock Units 3,156 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Restricted Stock Units 4,194 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Grant or award Restricted Stock Units 12,685 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Common Stock 5,101 $0.00 -
Mar 6, 2026 MW Mark R. Widmar - Officer Option exercise Common Stock 1,178 $0.00 -
Mar 4, 2026 MG Markus Gloeckler - Officer Open-market sale Common Stock 3,640 $196.95 $717K
Mar 3, 2026 MG Markus Gloeckler - Officer Open-market sale Common Stock 3,425 $195.93 $671K
Mar 3, 2026 JD Jason E. Dymbort - Officer Open-market sale Common Stock 3,273 $195.93 $641K
Feb 27, 2026 MW Mark R. Widmar - Officer Grant or award Common Stock 17,664 $0.00 -
Mar 3, 2026 MW Mark R. Widmar - Officer Open-market sale Common Stock 7,738 $195.93 $1.52M
Mar 2, 2026 GA Georges Antoun - Officer Grant or award Common Stock 4,239 $0.00 -
Mar 3, 2026 GA Georges Antoun - Officer Open-market sale Common Stock 1,958 $194.95 $382K
Jan 15, 2026 SS Samantha L. Sloan - Officer Tax withholding / forfeiture Common Stock 79 $243.64 $19K
Jan 15, 2026 SS Samantha L. Sloan - Officer Option exercise Restricted Stock Units 234 $0.00 -
Dec 31, 2025 AG Anita M. George - Director Grant or award Common Stock 173 $0.00 -
Dec 31, 2025 AG Anita M. George - Director Tax withholding / forfeiture Common Stock 52 $261.23 $14K
Dec 31, 2025 WP William J. Post - Director Grant or award Common Stock 173 $0.00 -
Dec 31, 2025 LK Lisa A. Kro - Director Grant or award Common Stock 173 $0.00 -
Nov 7, 2025 PS Paul H. Stebbins - Director Open-market sale Common Stock 1,423 $261.27 $372K
Nov 7, 2025 PS Paul H. Stebbins - Director Open-market sale Common Stock 4,656 $262.59 $1.22M
Nov 7, 2025 PS Paul H. Stebbins - Director Open-market sale Common Stock 921 $263.19 $242K
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