David W Heinzmann
CIK 1279765 · President & CEO · last filed 2026-05-15
David W Heinzmann is a President & CEO who has filed 92 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for THRM, was dated May 15, 2026. Across all open-market trades the lifetime net is −$37.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $28.7M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$28.67M
2
92
-$37.70M
Holdings By Company
Recent Filings
92 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-15 | THRM | Grant (A) | +4,292 | $0 | EDGAR |
| 2025-05-09 | THRM | Grant (A) | +5,075 | $0 | EDGAR |
| 2024-08-27 | LFUS | Mixed | — | -$171.6K | EDGAR |
| 2024-08-26 | LFUS | Notice (144) | −2,091 | -$574.3K | EDGAR |
| 2024-08-26 | LFUS | Mixed | — | -$713.0K | EDGAR |
| 2024-08-23 | LFUS | Notice (144) | −8,715 | -$2.39M | EDGAR |
| 2024-08-01 | LFUS | Mixed | — | -$307.9K | EDGAR |
| 2024-07-31 | LFUS | Notice (144) | −3,786 | -$1.04M | EDGAR |
| 2024-07-19 | LFUS | Mixed | — | -$885 | EDGAR |
| 2024-07-18 | LFUS | Notice (144) | −11 | -$3.0K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.