David W. Heinzmann
President & CEO at Littelfuse Inc.
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 7 years
- Director since
- 2023
7 years of board service in total across 2 boards, counting each seat separately. Longest: Littelfuse Inc., 3 years.
Littelfuse Inc.
Director · President & CEO
Gentherm Inc
Director
Chief executive roles
Littelfuse Inc.
· President & CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 26, 2024 | Littelfuse Inc. | Option exercise | +2,091 | $192.59 | $402,706 |
| Aug 26, 2024 | Littelfuse Inc. | Open-market sale | −749 | $273.93 | $205,174 |
| Aug 26, 2024 | Littelfuse Inc. | Open-market sale | −1,342 | $275.05 | $369,117 |
| Aug 23, 2024 | Littelfuse Inc. | Option exercise | +8,715 | $192.59 | $1,678,422 |
| Aug 23, 2024 | Littelfuse Inc. | Open-market sale | −2,382 | $273.59 | $651,691 |
| Aug 23, 2024 | Littelfuse Inc. | Open-market sale | −5,913 | $274.67 | $1,624,124 |
| Aug 23, 2024 | Littelfuse Inc. | Open-market sale | −420 | $275.24 | $115,601 |
| Jul 31, 2024 | Littelfuse Inc. | Option exercise | +3,786 | $192.59 | $729,146 |
| Jul 31, 2024 | Littelfuse Inc. | Open-market sale | −3,048 | $273.80 | $834,542 |
| Jul 31, 2024 | Littelfuse Inc. | Open-market sale | −738 | $274.44 | $202,537 |
| Jul 18, 2024 | Littelfuse Inc. | Option exercise | +11 | $192.59 | $2,118 |
| Jul 18, 2024 | Littelfuse Inc. | Open-market sale | −11 | $273.00 | $3,003 |
| Jul 17, 2024 | Littelfuse Inc. | Option exercise | +300 | $192.59 | $57,777 |
| Jul 17, 2024 | Littelfuse Inc. | Open-market sale | −300 | $273.17 | $81,951 |
| Jul 16, 2024 | Littelfuse Inc. | Option exercise | +8,158 | $192.59 | $1,571,149 |
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