undamentalytics Newsletter

First Solar, Inc. insider trading

Every open-market purchase and sale by First Solar, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
First Solar, Inc. insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following First Solar, Inc.’s insiders pay?

From February 24, 2010 to August 18, 2026, 31 insiders reported 14 open-market purchases and 95 sales not made under a pre-set plan in First Solar, Inc. Twelve months after each purchase was reported, the shares were +4.7% against the S&P 500 on average (median +8.1%), over 14 purchases with a full year of prices; 50% beat the index. After sales, the shares moved −0.2% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on March 1, 2010 into $11,267 by November 2, 2026, +0.7% a year. It held shares 48% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $28,445 (+6.5% a year), and held throughout $90,818 (+14.2%).

$0$50.0k$100k 201020122014201620182020202220242026 $90.8k$28.4k$11.3k
Copying First Solar, Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by First Solar, Inc.'s insiders from March 1, 2010, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 48% of the time.
First Solar, Inc.: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Sweeney Michael T Director 1 −1.9% (1) 0% 8 −20.8% (7) November 10, 2025
Antoun Georges Chief Commercial Officer 1 +81.0% (1) 100% 6 +26.9% (2) May 5, 2026
Buehler Patrick James Chief Product Officer 1 +81.0% (1) 100% 6 +26.9% (2) May 5, 2026
Widmar Mark R Chief Executive Officer 1 −98.6% (1) 0% 6 +26.9% (2) May 5, 2026
Bradley Alexander R. Chief Financial Officer 1 +89.0% (1) 100% 5 +26.9% (2) May 5, 2026
Gloeckler Markus Chief Technology Officer 0 — — 6 +26.9% (2) May 5, 2026
Koralewski Michael Chief Supply Chain Officer 0 — — 6 +26.9% (2) May 5, 2026
Stockdale Caroline Chief People and Comm. Officer 0 — — 6 +26.9% (2) May 5, 2026
Dymbort Jason E. General Counsel and Secretary 0 — — 5 +26.9% (2) May 5, 2026
Kennedy R Craig Director 0 — — 5 −27.3% (5) May 7, 2024
Sloan Samantha L. EVP, Corporate Affairs 0 — — 5 −18.7% (1) August 18, 2026
Stebbins Paul H Director 0 — — 5 −8.5% (4) November 10, 2025
Verma Kuntal Kumar Chief Manufacturing Officer 0 — — 5 +26.9% (2) May 5, 2026
Chapman Richard D Director 1 +59.9% (1) 100% 3 −44.0% (3) May 23, 2024
Kallenbach T.L. President, Components Bus Grp 3 −36.2% (3) 33% 0 — August 24, 2011
Presby J Thomas Director 1 +82.4% (1) 100% 2 −41.5% (2) May 12, 2017
Ahearn Michael J Executive Chairman 0 — — 2 +28.8% (2) February 26, 2010
Garabedian Raffi Chief Technology Officer 0 — — 2 +157.9% (2) May 9, 2013
Hambro George A Director 1 −21.8% (1) 0% 1 −6.4% (1) March 5, 2021
Hughes James Alton Chief Executive Officer 0 — — 2 −20.4% (2) August 18, 2015
Walton Lukas T 10% owner 0 — — 2 +14.7% (2) November 3, 2020
Eaglesham David J Chief Technology Officer 0 — — 1 −86.5% (1) March 7, 2011
Gillette Robert J CEO 1 +18.2% (1) 100% 0 — February 26, 2010
Gustafsson Mary Elizabeth EVP, General Counsel, Secty. 0 — — 1 +10.9% (1) May 9, 2013
Jtw Trust NO. 1 Uad 9/19/02 Other 0 — — 1 −67.8% (1) December 1, 2010
Nolan James F Director 0 — — 1 −86.3% (1) March 1, 2011
Post William J Director 0 — — 1 −33.1% (1) May 17, 2023
Sohn Bruce President 0 — — 1 −40.8% (1) September 1, 2010
Theurer Nathan B. VP - Global Controller and CAO 0 — — 1 — March 10, 2026
Villarreal Jose H Director 1 −58.7% (1) 0% 0 — November 7, 2011
Wright Norman L. Director 1 −55.8% (1) 0% 0 — March 8, 2023

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded First Solar, Inc.

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of First Solar, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After the 3 buying crowds with six months of prices, it averaged −5.9% against the index. After 7 selling crowds, −14.3%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
March 31, 202611 selling+2.7%−29.1%not yet
November 28, 20253 selling−27.5%+2.2%not yet
March 31, 20259 selling+18.2%+54.7%+39.3%
May 31, 20243 selling−23.6%−41.7%−55.6%
May 31, 20235 selling−17.2%−33.0%+5.9%
August 31, 20223 buying+31.7%+61.6%+30.1%
August 31, 20112 buying−54.9%−83.6%−97.7%
March 31, 20113 selling−17.8%−48.0%−92.9%
December 31, 20103 selling+16.9%−5.2%−76.0%
April 30, 20102 buying−6.1%+4.3%−20.2%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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