FSLR

FIRST SOLAR, INC.

Name: FIRST SOLAR, INC. insider trading (SEC Form 4) history
Creator: U.S. Securities and Exchange Commission

SEC CIK 1274494

$267.31 +12.3% · 90 days

90-day buys

0 open-market

90-day sells

$6.05M

39 open-market

Net insider flow

−$6.05M

Net selling

Filings shown

104

Most recent

At a glance

Over the last 90 days, insiders at FSLR have sold a net $6.05M of stock (0 open-market buys vs 39 sells).

Largest recent trade: Widmar Mark R sold $10.03M of FSLR, trimming their stake 31%.

Most active filer: Widmar Mark R, with 104 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for FSLR, newest first

View on SEC EDGAR ↗

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 18, 2025 ΔOwn −0.6%

Widmar Mark R sold $104.4K of FSLR, trimming their stake 1%.

−$104.4K

512 sh @ $204

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 18, 2025 ΔOwn −0.1%

Widmar Mark R sold $17K of FSLR.

−$17K

83 sh @ $205

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 18, 2025

Widmar Mark R sold $7K of FSLR.

−$7K

34 sh @ $206

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −1.6%

Widmar Mark R sold $253.5K of FSLR, trimming their stake 2%.

−$253.5K

1,367 sh @ $185

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.7%

Widmar Mark R sold $108.4K of FSLR, trimming their stake 1%.

−$108.4K

581 sh @ $187

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.9%

Widmar Mark R sold $147.3K of FSLR, trimming their stake 1%.

−$147.3K

786 sh @ $187

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.3%

Widmar Mark R sold $51.7K of FSLR.

−$51.7K

274 sh @ $189

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.9%

Widmar Mark R sold $149.6K of FSLR, trimming their stake 1%.

−$149.6K

788 sh @ $190

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.2%

Widmar Mark R sold $36.4K of FSLR.

−$36.4K

200 sh @ $182

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.8%

Widmar Mark R sold $165.4K of FSLR, trimming their stake 1%.

−$165.4K

900 sh @ $184

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −13%

Widmar Mark R sold $2.65M of FSLR, trimming their stake 13%.

−$2.65M

14,322 sh @ $185

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −5.7%

Widmar Mark R sold $1.02M of FSLR, trimming their stake 6%.

−$1.02M

5,456 sh @ $186

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −3.1%

Widmar Mark R sold $529.9K of FSLR, trimming their stake 3%.

−$529.9K

2,834 sh @ $187

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 14, 2025 ΔOwn −0.2%

Widmar Mark R sold $37.5K of FSLR.

−$37.5K

200 sh @ $188

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 18, 2025 ΔOwn −1.7%

Widmar Mark R sold $263K of FSLR, trimming their stake 2%.

−$263K

1,966 sh @ $134

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 10, 2025 ΔOwn −1.2%

Widmar Mark R sold $169.1K of FSLR, trimming their stake 1%.

−$169.1K

1,272 sh @ $133

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 3, 2025 ΔOwn −17%

Widmar Mark R sold $3.04M of FSLR, trimming their stake 17%.

−$3.04M

21,542 sh @ $141

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Jun 4, 2024 ΔOwn −31%

Widmar Mark R sold $10.03M of FSLR, trimming their stake 31%.

−$10.03M

36,692 sh @ $273

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 5, 2024 ΔOwn −17%

Widmar Mark R sold $3.24M of FSLR, trimming their stake 17%.

−$3.24M

21,244 sh @ $153

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Aug 1, 2023 ΔOwn −2.6%

Widmar Mark R sold $482.6K of FSLR, trimming their stake 3%.

−$482.6K

2,160 sh @ $223

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Jul 19, 2023 ΔOwn −2.5%

Widmar Mark R sold $453.6K of FSLR, trimming their stake 3%.

−$453.6K

2,160 sh @ $210

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Jul 19, 2023 ΔOwn −4.4%

Widmar Mark R sold $816.3K of FSLR, trimming their stake 4%.

−$816.3K

3,982 sh @ $205

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Jun 7, 2023 ΔOwn −31%

Widmar Mark R sold $7.99M of FSLR, trimming their stake 31%.

−$7.99M

39,948 sh @ $200

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −0.5%

Widmar Mark R sold $131.1K of FSLR.

−$131.1K

650 sh @ $202

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −2.4%

Widmar Mark R sold $647K of FSLR, trimming their stake 2%.

−$647K

3,186 sh @ $203

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −1.5%

Widmar Mark R sold $396.4K of FSLR, trimming their stake 1%.

−$396.4K

1,945 sh @ $204

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −2.7%

Widmar Mark R sold $709.4K of FSLR, trimming their stake 3%.

−$709.4K

3,458 sh @ $205

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −4.8%

Widmar Mark R sold $1.25M of FSLR, trimming their stake 5%.

−$1.25M

6,092 sh @ $206

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −0.6%

Widmar Mark R sold $142.4K of FSLR, trimming their stake 1%.

−$142.4K

688 sh @ $207

FSLR

FIRST SOLAR, INC.

Sell Widmar Mark R · Director, Chief Executive Officer · Open-market sale · filed Mar 6, 2023 ΔOwn −2.0%

Widmar Mark R sold $504.1K of FSLR, trimming their stake 2%.

−$504.1K

2,421 sh @ $208

About FSLR insider activity

This page tracks every recent Form 4 filed for FIRST SOLAR, INC. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is FSLR insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for FIRST SOLAR, INC. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.