SEC Form 4 · Updated Daily

THRM

— GENTHERM INCORPORATED Ownership

Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.

Financials Ownership

Current Reporting Owners

Owner	Role	Shares Owned	As Of	Last Activity
ARGYROS GEORGE L	Director	2,215,215	2007-05-11	S
WESTAR CAPITAL II LLC	10%+ Owner	2,215,215	2007-05-11	S
MARXE AUSTIN W & GREENHOUSE DAVID M	10%+ Owner	1,954,221	2006-06-07	S
TMW Enterprises Inc.	10%+ Owner	326,180	2006-05-01	S
WHEELER THOMAS M	Reporting Owner	326,180	2006-05-01	S
W III H Partners, LP	10%+ Owner	326,180	2006-05-01	S
OSTER PAUL	Reporting Owner	187,770	2006-02-09	S
Presley William T.	Director · Officer	183,314	2026-10-23	P
Eyler Phillip	Director	145,484	2024-12-31	F
MARX OSCAR B III	Director	127,068	2016-05-26	A
BELL LON E	Director	108,371	2012-01-03	A
Douyard Jonathan C	Officer	69,639	2026-03-17	A
Steele Barry G	Officer	58,848	2018-12-18	S
COKER DANIEL R	Director · Officer	53,872	2017-12-01	F
Bomzer David J	Officer	46,014	2014-09-03	M
Wilson Jaymi	Officer	43,436	2026-03-23	A
Desormiere Sophie	Director	42,303	2026-05-14	A
Schumacher Darren	Officer	40,468	2018-02-22	F
Runyon Barbara J	Officer	38,647	2026-03-23	A
MERTES JAMES L	Officer	36,530	2012-09-06	M
Oldorff Frithjof	Officer	35,017	2019-06-11	F
Davis Stephen C	Officer	33,416	2013-11-20	S
Barkas Rafael	Officer	32,500	2026-03-23	A
Steinl Greg	Officer	29,455	2015-07-02	F
Stocker Thomas	Officer	29,200	2026-03-23	A
Sundaram Vishnu	Officer	28,473	2026-03-17	A
Ascher Erin Erwine	Officer	27,831	2018-02-22	F
Kauffman Wayne S III	Officer	27,421	2026-07-29	S
Stacey John	Director	27,112	2026-05-14	A
Shaw Byron	Director	26,720	2023-05-18	A
Anversa Matteo	Director	26,032	2023-03-11	F
Kummeth Charles R.	Director	25,937	2026-05-14	A
Gaul Ryan Wesley	Officer	24,189	2019-06-11	F
MASCARENAS PAUL ANTHONY	Director	22,677	2026-10-23	P
Hundzinski Ronald T	Director	22,298	2026-05-14	A
Gunderson Maurice EP	Director	21,904	2019-05-16	A
CASTAING FRANCOIS J	Director	21,904	2019-05-16	A
HEINZMANN DAVID W	Director	21,365	2026-05-14	A
GROUF SANDRA L	Officer	19,740	2010-02-19	M
Meter Elizabeth	Director	19,664	2026-05-14	A
Xu Hui (Helen)	Officer	18,947	2024-12-05	S
Phillips Kenneth John	Officer	18,646	2019-06-21	M
Brentano Yijing	Officer	18,568	2024-05-31	S
Hao Yvonne	Director	18,530	2022-06-02	A
Wang Chenglong	Officer	17,231	2026-03-23	A
MAZZORIN CARLOS E	Director	16,960	2015-09-04	M
PACE DANIEL J	Officer	15,935	2013-03-18	M
Washington Kenneth E	Director	15,257	2026-05-14	A
CLARK JOHN W	Director	14,400	2008-01-02	M
Fisch Matthew	Officer	13,614	2022-11-15	S
Kowalchik Laura Michele	Officer	13,395	2026-05-14	A
BOOTH LEWIS W K	Director	13,084	2017-05-19	A
Giberson Paul Cameron	Officer	9,932	2021-07-29	S
Scherer Franz	Director	6,043	2015-05-28	A
Potesta Mark A	Officer	5,165	2019-02-25	A
DEVINE JOHN M	Director	5,040	2012-05-10	A
Nicholas Breisacher	Officer	4,864	2026-08-17	S
DONLON JAMES D III	Director	3,554	2012-05-10	A
Zoldos Jennifer L.	Officer	1,553	2022-06-22	F
PAULSEN JAMES J	Director	1,486	2012-01-03	A

Recent Filings

Date	Owner	Activity	Shares	Price	Owned After
2026-10-23	Presley William T.	Open-market buy	5,000	$26.00	183,314
2026-10-23	MASCARENAS PAUL ANTHONY	Open-market buy	20,000	$26.63	22,677
2026-10-01	MASCARENAS PAUL ANTHONY	Grant / award	2,677	$0.00	2,677
2026-08-17	Nicholas Breisacher	Open-market sale	925	$43.21	4,864
2026-07-29	Kauffman Wayne S III	Open-market sale	4,700	$43.21	27,421
2026-05-14	Desormiere Sophie	Grant / award	4,292	$0.00	42,303
2026-05-14	HEINZMANN DAVID W	Grant / award	4,292	$0.00	21,365
2026-05-14	Hundzinski Ronald T	Grant / award	4,292	$0.00	22,298
2026-05-14	Kowalchik Laura Michele	Grant / award	4,292	$0.00	13,395
2026-05-14	Kummeth Charles R.	Grant / award	4,292	$0.00	25,937
2026-05-14	Meter Elizabeth	Grant / award	4,292	$0.00	19,664
2026-05-14	Stacey John	Grant / award	4,292	$0.00	27,112
2026-05-14	Washington Kenneth E	Grant / award	4,292	$0.00	15,257
2026-03-23	Wang Chenglong	Grant / award	266	$0.00	17,231
2026-03-23	Stocker Thomas	Tax withholding	1,115	$28.64	28,085
2026-03-23	Stocker Thomas	Grant / award	2,474	$0.00	29,200
2026-03-23	Kauffman Wayne S III	Tax withholding	925	$28.64	32,121
2026-03-23	Kauffman Wayne S III	Grant / award	2,121	$0.00	33,046
2026-03-23	Wilson Jaymi	Tax withholding	710	$28.64	42,726
2026-03-23	Wilson Jaymi	Grant / award	2,474	$0.00	43,436
2026-03-23	Runyon Barbara J	Tax withholding	961	$28.64	37,686
2026-03-23	Runyon Barbara J	Grant / award	2,121	$0.00	38,647
2026-03-23	Barkas Rafael	Tax withholding	607	$28.64	31,893
2026-03-23	Barkas Rafael	Grant / award	2,121	$0.00	32,500
2026-03-23	Nicholas Breisacher	Tax withholding	102	$28.64	5,789
2026-03-23	Nicholas Breisacher	Grant / award	353	$0.00	5,891
2026-03-17	Presley William T.	Grant / award	40,230	$0.00	178,314
2026-03-17	Wang Chenglong	Grant / award	11,496	$0.00	16,965
2026-03-17	Douyard Jonathan C	Grant / award	14,049	$0.00	69,639
2026-03-17	Stocker Thomas	Grant / award	8,940	$0.00	26,726
2026-03-17	Wilson Jaymi	Grant / award	8,940	$0.00	40,962
2026-03-17	Barkas Rafael	Grant / award	7,665	$0.00	30,379
2026-03-17	Kauffman Wayne S III	Grant / award	7,665	$0.00	30,925
2026-03-17	Runyon Barbara J	Grant / award	7,665	$0.00	36,526
2026-03-17	Sundaram Vishnu	Grant / award	7,665	$0.00	28,473
2026-03-17	Nicholas Breisacher	Grant / award	1,599	$0.00	5,538
2026-03-15	Nicholas Breisacher	Tax withholding	90	$27.82	3,939
2026-03-15	Barkas Rafael	Tax withholding	573	$27.82	22,714
2026-03-15	Kauffman Wayne S III	Tax withholding	874	$27.82	23,260
2026-03-15	Wilson Jaymi	Tax withholding	646	$27.82	32,022

Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.