Heinzmann David W — SEC Form 4 filings
SEC reporting owner CIK 1279765. 11 Form 4 filings on record with FilingPulse; latest filed 2026-05-15.
Transaction summary — filings shown
Covers all 11 filings on record, filed 2024-04-23 to 2026-05-15. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 12 legs across 5 filings — 23,061 shares, $6,326,386 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 20.
- Largest priced transaction: sale of 5,913 shares @ $274.67 ($1,624,124) in LITTELFUSE INC /DE, filed 2024-08-26.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| LITTELFUSE INC /DE (LFUS) | President & CEO, Director | 8 | — | 12 legs · 23,061 sh · $6,326,386 | 17 |
| Gentherm Inc (THRM) | Director | 3 | — | — | 3 |
Form 4 filings — Heinzmann David W
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-05-15 | 4 | Gentherm Inc (THRM) | Grant/award (A): 4,292 @ $0 | EDGAR |
| 2025-05-09 | 4 | Gentherm Inc (THRM) | Grant/award (A): 5,075 @ $0 | EDGAR |
| 2024-08-27 | 4 | LITTELFUSE INC /DE (LFUS) | Option exercise (M): 2,091 @ $192.59 · Sale (S): 749 @ $273.93 · Sale (S): 1,342 @ $275.05 · Option exercise (M): 2,091 (derivative) @ $0 | EDGAR |
| 2024-08-26 | 4 | LITTELFUSE INC /DE (LFUS) | Option exercise (M): 8,715 @ $192.59 · Sale (S): 2,382 @ $273.59 · Sale (S): 5,913 @ $274.67 · Sale (S): 420 @ $275.24 · Option exercise (M): 8,715 (derivative) @ $0 | EDGAR |
| 2024-08-01 | 4 | LITTELFUSE INC /DE (LFUS) | Option exercise (M): 3,786 @ $192.59 · Sale (S): 3,048 @ $273.80 · Sale (S): 738 @ $274.44 · Option exercise (M): 3,786 (derivative) @ $0 | EDGAR |
| 2024-07-19 | 4 | LITTELFUSE INC /DE (LFUS) | Option exercise (M): 11 @ $192.59 · Sale (S): 11 @ $273 · Option exercise (M): 11 (derivative) @ $0 | EDGAR |
| 2024-07-18 | 4 | LITTELFUSE INC /DE (LFUS) | Option exercise (M): 8,158 @ $192.59 · Sale (S): 2,555 @ $273.42 · Sale (S): 4,784 @ $274.79 · Sale (S): 819 @ $275.29 · Option exercise (M): 300 @ $192.59 · Sale (S): 300 @ $273.17 · +2 more | EDGAR |
| 2024-05-20 | 4 | GENTHERM Inc (THRM) | Grant/award (A): 2,662 @ $0 | EDGAR |
| 2024-04-29 | 4 | LITTELFUSE INC /DE (LFUS) | Grant/award (A): 10,917 @ $0 · Grant/award (A): 32,145 (derivative) @ $0 | EDGAR |
| 2024-04-29 | 4 | LITTELFUSE INC /DE (LFUS) | Tax withholding (F): 1,434 @ $231.64 · Tax withholding (F): 1,273 @ $231.64 | EDGAR |
| 2024-04-23 | 4 | LITTELFUSE INC /DE (LFUS) | Tax withholding (F): 712 @ $228.84 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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