Gentherm's three largest insider shareholders as of September 29, 2026 are William T. Presley (President Ceo, 178.31K shares), Phillip Eyler (President Ceo, 139.66K shares), Jonathan C Douyard (Evp, Cfo, Treasurer, 69.64K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | William T. Presley | President Ceo | 178,314 | 0 | 178,314 | 19.0% | 18 Mar, 2026 |
| 2 | Phillip Eyler | President Ceo | 139,663 | 0 | 139,663 | 14.9% | 25 Feb, 2025 |
| 3 | Jonathan C Douyard | Evp, Cfo, Treasurer | 69,639 | 0 | 69,639 | 7.4% | 18 Mar, 2026 |
| 4 | Matteo Anversa | Evp, Cfo, Treasurer | 47,472 | 0 | 47,472 | 5.1% | 26 Mar, 2024 |
| 5 | Jaymi Wilson | Svp, Chief Strategy Officer | 42,726 | 0 | 42,726 | 4.6% | 25 Mar, 2026 |
| 6 | Sophie Desormiere | Director | 42,303 | 0 | 42,303 | 4.5% | 15 May, 2026 |
| 7 | Barbara J Runyon | Svp, Chro | 37,686 | 0 | 37,686 | 4.0% | 25 Mar, 2026 |
| 8 | Rafael Barkas | Svp Global Ops Supply Chain | 31,893 | 0 | 31,893 | 3.4% | 25 Mar, 2026 |
| 9 | Vishnu Sundaram | Svp, Chief Technology Officer | 28,473 | 0 | 28,473 | 3.0% | 18 Mar, 2026 |
| 10 | Thomas Stocker | President, Gentherm Tech. | 28,085 | 0 | 28,085 | 3.0% | 25 Mar, 2026 |
| 11 | Wayne S Iii Kauffman | Svp And General Counsel | 27,421 | 0 | 27,421 | 2.9% | 30 Jul, 2026 |
| 12 | John Stacey | Director | 27,112 | 0 | 27,112 | 2.9% | 15 May, 2026 |
| 13 | Byron Shaw | Director | 26,720 | 0 | 26,720 | 2.8% | 22 May, 2023 |
| 14 | Charles R. Kummeth | Director | 25,937 | 0 | 25,937 | 2.8% | 15 May, 2026 |
| 15 | Ronald T Hundzinski | Director | 22,298 | 0 | 22,298 | 2.4% | 15 May, 2026 |
| 16 | David W Heinzmann | Director | 21,365 | 0 | 21,365 | 2.3% | 15 May, 2026 |
| 17 | Elizabeth Meter | Director | 19,664 | 0 | 19,664 | 2.1% | 15 May, 2026 |
| 18 | Hui (Helen) Xu | Svp, General Manager, Asia | 18,947 | 0 | 18,947 | 2.0% | 05 Dec, 2024 |
| 19 | Yijing Brentano | Svp, Strategy, Corp Dev, Ir | 18,568 | 0 | 18,568 | 2.0% | 04 Jun, 2024 |
| 20 | Yvonne Hao | Director | 18,530 | 0 | 18,530 | 2.0% | 06 Jun, 2022 |
| 21 | Chenglong Wang | Vp General Manager | 17,231 | 0 | 17,231 | 1.8% | 25 Mar, 2026 |
| 22 | Kenneth E Washington | Director | 15,257 | 0 | 15,257 | 1.6% | 15 May, 2026 |
| 23 | Matthew Fisch | Svp Chief Technology Officer | 13,614 | 0 | 13,614 | 1.5% | 15 Nov, 2022 |
| 24 | Laura Michele Kowalchik | Director | 13,395 | 0 | 13,395 | 1.4% | 15 May, 2026 |
| 25 | Breisacher Nicholas | Chief Accounting Officer | 4,864 | 0 | 4,864 | 0.5% | 18 Aug, 2026 |
| 26 | Jennifer L. Zoldos | Chief Accounting Officer | 1,553 | 0 | 1,553 | 0.2% | 23 Jun, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Breisacher Nicholas | Chief Accounting Officer | Disposed S | 925 | $43.21 | $39.97K | 4,864 | Direct |
| 29 Jul, 2026 | Wayne S Iii Kauffman | Svp And General Counsel | Disposed S | 4,700 | $43.21 | $203.09K | 27,421 | Direct |
| 14 May, 2026 | Sophie Desormiere | Director | Acquired A | 4,292 | $0.00 | $0 | 42,303 | Direct |
| 14 May, 2026 | Elizabeth Meter | Director | Acquired A | 4,292 | $0.00 | $0 | 19,664 | Direct |
| 14 May, 2026 | Laura Michele Kowalchik | Director | Acquired A | 4,292 | $0.00 | $0 | 13,395 | Direct |
| 14 May, 2026 | Ronald T Hundzinski | Director | Acquired A | 4,292 | $0.00 | $0 | 22,298 | Direct |
| 14 May, 2026 | David W Heinzmann | Director | Acquired A | 4,292 | $0.00 | $0 | 21,365 | Direct |
| 14 May, 2026 | Kenneth E Washington | Director | Acquired A | 4,292 | $0.00 | $0 | 15,257 | Direct |
| 14 May, 2026 | Charles R. Kummeth | Director | Acquired A | 4,292 | $0.00 | $0 | 25,937 | Direct |
| 14 May, 2026 | John Stacey | Director | Acquired A | 4,292 | $0.00 | $0 | 27,112 | Direct |
| 23 Mar, 2026 | Jaymi Wilson | Svp, Chief Strategy Officer | Acquired A | 2,474 | $0.00 | $0 | 43,436 | Direct |
| 23 Mar, 2026 | Wayne S Iii Kauffman | Svp And General Counsel | Acquired A | 2,121 | $0.00 | $0 | 33,046 | Direct |
| 23 Mar, 2026 | Chenglong Wang | Vp General Manager | Acquired A | 266 | $0.00 | $0 | 17,231 | Direct |
| 23 Mar, 2026 | Breisacher Nicholas | Chief Accounting Officer | Acquired A | 353 | $0.00 | $0 | 5,891 | Direct |
| 23 Mar, 2026 | Barbara J Runyon | Svp, Chro | Acquired A | 2,121 | $0.00 | $0 | 38,647 | Direct |
| 23 Mar, 2026 | Rafael Barkas | Svp Global Ops Supply Chain | Acquired A | 2,121 | $0.00 | $0 | 32,500 | Direct |
| 23 Mar, 2026 | Thomas Stocker | President, Gentherm Tech. | Acquired A | 2,474 | $0.00 | $0 | 29,200 | Direct |
| 23 Mar, 2026 | Wayne S Iii Kauffman | Svp And General Counsel | Disposed F | 925 | $28.64 | $26.49K | 32,121 | Direct |
| 23 Mar, 2026 | Breisacher Nicholas | Chief Accounting Officer | Disposed F | 102 | $28.64 | $2.92K | 5,789 | Direct |
| 23 Mar, 2026 | Thomas Stocker | President, Gentherm Tech. | Disposed F | 1,115 | $28.64 | $31.93K | 28,085 | Direct |