Stocks › FSLR
FIRST SOLAR, INC.
FSLR·Nasdaq·
United States·USD
United States·USD$179.80
+3.64 (+2.07%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
FSLR
FIRST SOLAR, INC. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
FSLRS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
Loading price history…
Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of FSLR by members of U.S. Congress · 68 on record · 6 in the last 12 months
Whale Activity
Position changes in FSLR reported for 2026-09-30 by 1 tracked institutional filer
- Increased0
- New0
- Held0
- Decreased0
- Closed0
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| Two Seas Capital LP | 378.0K | $66.2M | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by FSLR insiders, by quarter · Form 4
Recent Insider Transactions
8,333 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Gloeckler MarkusChief Technology Officer | Sale | −800 | $174.00 | $139K | Oct 1, 2026 | Form 4 ↗ |
| Gloeckler MarkusChief Technology Officer | Sale | −800 | $200.00 | $160K | Sep 1, 2026 | Form 4 ↗ |
| Sloan Samantha L.EVP, Corporate Affairs | Sale | −127 | $222.95 | $28K | Aug 17, 2026 | Form 4 ↗ |
| Dymbort Jason E.General Counsel and Secretary | Sale | −3,700 | $249.38 | $923K | Aug 11, 2026 | Form 4 ↗ |
| Gloeckler MarkusChief Technology Officer | Sale | −829 | $248.00 | $206K | Aug 4, 2026 | Form 4 ↗ |
| Gloeckler MarkusChief Technology Officer | Sale | −800 | $222.00 | $178K | Aug 3, 2026 | Form 4 ↗ |
| Gloeckler MarkusChief Technology Officer | Sale | −2,625 | $218.02 | $572K | Aug 3, 2026 | Form 4 ↗ |
| Koralewski MichaelChief Supply Chain Officer | Sale | −3,500 | $225.00 | $788K | Aug 3, 2026 | Form 4 ↗ |
| Koralewski MichaelChief Supply Chain Officer | Sale | −3,500 | $218.02 | $763K | Aug 3, 2026 | Form 4 ↗ |
| Buehler Patrick JamesChief Product Officer | Sale | −3,000 | $302.00 | $906K | Jun 2, 2026 | Form 4 ↗ |
| Stockdale CarolineChief People and Comm. Officer | Sale | −10.6K | $275.60 | $2.9M | May 28, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −126 | $276.29 | $35K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −473 | $273.17 | $129K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −726 | $271.23 | $197K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −632 | $270.05 | $171K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −1,009 | $268.89 | $271K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −628 | $267.72 | $168K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −1,237 | $266.60 | $330K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −364 | $265.15 | $97K | May 26, 2026 | Form 4 ↗ |
| Widmar Mark RChief Executive Officer · Director | Sale | −47 | $258.48 | $12K | May 22, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding FSLR · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 3.2M | $764.5M | 0.03% | Jun 30, 2026 |
| VANGUARD 500 INDEX FUND VANGUARD INDEX FUNDS | 2.8M | $656.8M | 0.04% | Jun 30, 2026 |
| Growth Fund of America | 1.7M | $514.8M | 0.14% | May 31, 2026 |
| Fidelity 500 Index Fund Fidelity Concord Street Trust | 1.4M | $421.3M | 0.05% | May 31, 2026 |
| iShares Core S&P 500 ETF iShares Trust | 1.5M | $348.6M | 0.04% | Jun 30, 2026 |
| VANGUARD INFORMATION TECHNOLOGY INDEX FUND VANGUARD WORLD FUND | 1.1M | $331.8M | 0.19% | May 31, 2026 |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | 1.3M | $307.0M | 0.04% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 1.2M | $276.1M | 0.15% | Jun 30, 2026 |
| Invesco Solar ETF Invesco Exchange-Traded Fund Trust II | 877.4K | $269.2M | 11.74% | May 31, 2026 |
| VANGUARD MID-CAP INDEX FUND VANGUARD INDEX FUNDS | 1.1M | $260.9M | 0.12% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list FSLR's shares (CUSIP 336433107), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Susquehanna Securities, LLCSCHEDULE 13G/A · passive (13G) · 7.5M shares7.0%
Aug 14, 2026 · ↗ - Susquehanna Investment GroupSCHEDULE 13G/A · passive (13G) · 7.5M shares7.0%
Aug 14, 2026 · ↗ - Susquehanna Fundamental Investments, LLCSCHEDULE 13G/A · passive (13G) · 7.5M shares7.0%
Aug 14, 2026 · ↗ - SIG Brokerage, LPSCHEDULE 13G/A · passive (13G) · 7.5M shares7.0%
Aug 14, 2026 · ↗ - G1 Execution Services, LLCSCHEDULE 13G/A · passive (13G) · 7.5M shares7.0%
Aug 14, 2026 · ↗ - Jane Street Singapore Pte. LtdSCHEDULE 13G · passive (13G) · 82 shares0.0%
Aug 13, 2026 · ↗ - Jane Street Global Trading, LLCSCHEDULE 13G · passive (13G) · 3,863 shares0.0%
Aug 13, 2026 · ↗ - Jane Street Capital, LLCSCHEDULE 13G · passive (13G) · 5.5M shares5.1%
Aug 13, 2026 · ↗ - JANE STREET GROUP, LLCSCHEDULE 13G · passive (13G) · 5.5M shares5.1%
Aug 13, 2026 · ↗ - STATE STREET CORPORATIONSCHEDULE 13G · passive (13G) · 5.6M shares5.2%
Aug 7, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming first solar as client
- FIRST SOLAR, INC.FIRST SOLAR INC · 2026 Q2 · TRD$270K
Filing ↗ - THORN RUN PARTNERSFIRST SOLAR, INC. · 2026 Q2 · ENG$80K
Filing ↗ - MISSION STRATEGIES LLC (ENERGY)FIRST SOLAR, INC. · 2026 Q2 · TAX, TRD, ENG$90K
Filing ↗ - FIRST SOLAR, INC.FIRST SOLAR INC · 2026 Q1 · TRD$270K
Filing ↗ - THORN RUN PARTNERSFIRST SOLAR, INC. · 2026 Q1 · ENG$80K
Filing ↗
Government Contracts
Federal awards to FIRST SOLAR, INC. · USAspending
No federal contract awards found for FIRST SOLAR, INC..
U.S. Patents
Recent USPTO applications naming FIRST SOLAR, INC.
No USPTO patent applications found for FIRST SOLAR, INC..
Annual Financials
From FSLR's 10-K filings · XBRL
No annual XBRL figures on record for FSLR. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in FSLR's price history.
About FIRST SOLAR, INC.
From SEC EDGAR company records
Industry (SIC 3674)Semiconductors & Related Devices
SectorTechnology
HeadquartersPHOENIX, AZ
IncorporatedDE
SEC CIK0001274494 ↗
Former namesFIRST SOLAR HOLDINGS LLC