// company-profile
First Solar, Inc.
FSLRExchangeNasdaqSectorSemiconductors & Related DevicesInc.DEFilings329Insiders24
// api This First Solar, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Mixed insider activity over the last 30 days: 0 purchases and 0 sales (0 transactions total).
// 90-day insight
Over the last 90 days, First Solar, Inc. insiders sold $424K across 3 transactions with no open-market purchases.
- Most active insider: Widmar Mark R with 39 transactions totaling $6.0M.
- Largest single sale: $2.9M by Stockdale Caroline on May 28, 2026.
- 94% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bearish — sales outpace buys.
Institutional Ownership
Top 13F-HR holders of First Solar, Inc. as of 2026-03-31
Total reported AUM
$23.21B
QoQ change
-31.7%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$1.34B
6.8M shares
#2
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
$1.12B
5.7M shares
#3
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 1446194
$1.11B
5.6M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 2, 2026 | Buehler Patrick James | FSLR | Sale10b5 | 3,000 | $302.00 | $906K |
| May 28, 2026 | Stockdale Caroline | FSLR | Sale10b5 | 10,628 | $275.60 | $2.93M |
| May 26, 2026 | Widmar Mark R | FSLR | Sale10b5 | 632 | $270.05 | $171K |
| May 26, 2026 | Widmar Mark R | FSLR | Sale10b5 | 1,009 | $268.89 | $271K |
| May 26, 2026 | Widmar Mark R | FSLR | Sale10b5 | 628 | $267.72 | $168K |
45 more transactions hidden
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