David W. Heinzmann is CEO & President at LITTELFUSE INC /DE (LFUS). They have made 14 open-market trades across 1 company since 2013, most recently 2026-05-14.
CIK 0001279765
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 14 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| LFUS | SELL · 10b5-1 | 2024-08-26 | 2024-08-27 | $274.65 | $1.1M | -7.0% | -0.3% | -6.0% |
| LFUS | SELL · 10b5-1 | 2024-08-23 | 2024-08-26 | $274.40 | $4.8M | -6.5% | -4.3% | -6.3% |
| LFUS | SELL | 2024-07-31 | 2024-08-01 | $273.92 | $2.1M | +0.4% | +2.3% | -0.2% |
| LFUS | SELL · 10b5-1 | 2024-07-18 | 2024-07-19 | $273.00 | $3K | +2.0% | +0.4% | +0.1% |
| LFUS | SELL · 10b5-1 | 2024-07-16 | 2024-07-18 | $274.39 | $4.6M | -2.1% | -0.4% | -2.8% |
| LFUS | SELL | 2023-02-14 | 2023-02-16 | $267.79 | $10.1M | -2.0% | -4.1% | -0.6% |
| LFUS | SELL | 2021-11-16 | 2021-11-18 | $325.63 | $2.7M | -8.5% | -10.6% | -19.3% |
| LFUS | SELL | 2021-11-15 | 2021-11-16 | $324.90 | $7.8M | -5.3% | -9.1% | -22.3% |
| LFUS | SELL | 2021-10-21 | 2021-10-22 | $294.00 | $2.9M | +6.7% | +7.3% | -5.8% |
| LFUS | SELL | 2021-04-26 | 2021-04-27 | $280.00 | $1.5M | -5.6% | -6.9% | -10.4% |
| LFUS | SELL | 2020-11-11 | 2020-11-13 | $221.05 | $1.6M | +4.9% | +6.4% | +19.6% |
| LFUS | SELL | 2020-11-05 | 2020-11-05 | $209.00 | $3.7M | +8.8% | +17.2% | +23.2% |
| LFUS | SELL | 2020-01-14 | 2020-01-16 | $195.00 | $2.8M | -6.1% | -3.4% | -32.0% |
| LFUS | SELL | 2018-02-26 | 2018-02-27 | $212.00 | $2.4M | +4.1% | -1.2% | +2.6% |
| LFUS | SELL | 2018-02-20 | 2018-02-21 | $209.90 | $1.0M | -0.8% | -2.6% | +1.3% |
| LFUS | SELL | 2016-08-31 | 2016-09-01 | $127.00 | $1.2M | -3.6% | -0.2% | +14.3% |
| LFUS | SELL · 10b5-1 | 2015-11-09 | 2015-11-12 | $110.00 | $879K | -8.3% | -2.5% | +1.7% |
| LFUS | SELL · 10b5-1 | 2015-11-05 | 2015-11-09 | $104.90 | $105K | -8.3% | -2.5% | +2.2% |
| LFUS | SELL · Routine | 2014-11-07 | 2014-11-12 | $97.50 | $575K | -8.3% | -2.5% | -2.5% |
| LFUS | SELL | 2013-11-18 | 2013-11-20 | $84.69 | $872K | -8.3% | -2.5% | -2.5% |
| LFUS | SELL | 2013-05-09 | 2013-05-13 | $70.10 | $1.5M | -8.3% | -2.5% | -2.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.