SEC Form 4 reporting owner

Widmar Mark R

Widmar Mark R has filed 54 Form 4 transactions reported between February 26, 2026 and July 1, 2026, as Director of ALBEMARLE CORP and Chief Executive Officer of FIRST SOLAR, INC..

Name as filed: Widmar Mark R

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$9.0M

44 lines

Companies

with Form 4 filings

Latest transaction

Jul 1, 2026

transaction date

Roles and reported holdings

ALBALBEMARLE CORP
Feb 26, 2026 – Jul 1, 2026
Director
No common-stock holding reported on a purchase, sale, gift or withholding line.
FSLRFIRST SOLAR, INC.
Feb 27, 2026 – May 26, 2026
Chief Executive Officer
Held directly81,861 sh as of May 26, 2026 · Form 4
24 months: $9.0M sold

Transaction history

All 54 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Jul 1, 2026	ALBDirector	Grant or awardCode A · direct	1,250	—	—	1,576	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	126	$276.29	$35K@ $276.29	81,861	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	473	$273.17	$129K@ $273.17	81,987	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	726	$271.23	$197K@ $271.23	82,460	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	632	$270.05	$171K@ $270.05	83,186	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,009	$268.89	$271K@ $268.89	83,818	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	628	$267.72	$168K@ $267.72	84,827	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,237	$266.60	$330K@ $266.60	85,455	Form 4
May 26, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	364	$265.15	$97K@ $265.15	86,692	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	47	$258.48	$12K@ $258.48	87,056	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	149	$257.55	$38K@ $257.55	87,103	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	75	$256.32	$19K@ $256.32	87,252	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	64	$255.59	$16K@ $255.59	87,327	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	916	$254.93	$234K@ $254.93	87,391	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	218	$253.63	$55K@ $253.63	88,307	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	97	$252.87	$25K@ $252.87	88,525	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	172	$251.53	$43K@ $251.53	88,622	Form 4
May 22, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	239	$250.02	$60K@ $250.02	88,794	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	521	$243.19	$127K@ $243.19	89,033	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	6	$256.96	$2K@ $256.96	89,554	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	261	$254.29	$66K@ $254.29	89,739	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	569	$251.64	$143K@ $251.64	90,000	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	472	$250.61	$118K@ $250.61	90,569	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,131	$249.70	$282K@ $249.70	91,041	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	179	$248.80	$45K@ $248.80	92,172	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	98	$247.53	$24K@ $247.53	92,351	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	229	$246.23	$56K@ $246.23	92,449	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	136	$244.62	$33K@ $244.62	92,678	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	362	$241.40	$87K@ $241.40	92,814	Form 4
May 21, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	672	$240.10	$161K@ $240.10	93,176	Form 4
May 13, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,300	$240.02	$312K@ $240.02	93,848	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	400	$236.53	$95K@ $236.53	95,148	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,363	$235.69	$321K@ $235.69	95,548	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,498	$234.84	$352K@ $234.84	96,911	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,877	$233.56	$438K@ $233.56	98,409	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	2,262	$232.55	$526K@ $232.55	100,286	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,026	$231.53	$238K@ $231.53	102,548	Form 4
May 11, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,500	$230.18	$345K@ $230.18	103,574	Form 4
May 5, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,526	$215.63	$329K@ $215.63	105,074	Form 4
May 4, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	3,802	—	—	106,600	Form 4
Mar 16, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,937	$200.80	$389K@ $200.80	102,798	Form 4
Mar 13, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	4,856	—	—	104,735	Form 4
Mar 9, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,703	$190.36	$324K@ $190.36	99,879	Form 4
Mar 9, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	1,282	$190.36	$244K@ $190.36	101,582	Form 4
Mar 9, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	480	$190.36	$91K@ $190.36	102,864	Form 4
Mar 9, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	2,072	$190.36	$394K@ $190.36	103,344	Form 4
Mar 6, 2026	FSLRChief Executive Officer	Grant or awardCode A · direct	12,685	—	—	12,685	Form 4
Mar 6, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	4,194	—	—	105,416	Form 4
Mar 6, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	3,156	—	—	101,222	Form 4
Mar 6, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	1,178	—	—	98,066	Form 4
Mar 6, 2026	FSLRChief Executive Officer	Option exerciseCode M · direct	5,101	—	—	96,888	Form 4
Mar 3, 2026	FSLRChief Executive Officer	Open-market saleCode S · direct	7,738	$195.93	$1.5M@ $195.93	91,787	Form 4
Feb 27, 2026	FSLRChief Executive Officer	Grant or awardCode A · direct	17,664	—	—	99,525	Form 4
Feb 26, 2026	ALBDirector	Grant or awardCode A · direct	325	—	—	325	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.