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Gentex stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−12.0% to $19.88
Gentex (GNTX) stock fell 12% over the last 252 sessions, to $19.88. On the way it reported 0 quarters, its insiders filed 4 open-market trades, and the company filed 0 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| May 15, 2026 | Insider sale | Walker Brian C sold $136K | −2.3% (−1.1% vs SPY) | 0.0% (+0.7% vs SPY) | +10.6% (+9.7% vs SPY) |
| May 15, 2026 | Insider sale | Anderson Joseph B Jr. sold $136K | −2.3% (−1.1% vs SPY) | 0.0% (+0.7% vs SPY) | +10.6% (+9.7% vs SPY) |
| May 5, 2026 | Insider sale | Brown Leslie L sold $246K | +1.5% (+0.7% vs SPY) | +2.6% (−0.3% vs SPY) | +10.1% (+5.2% vs SPY) |
| Apr 30, 2026 | Insider sale | Schaum Richard O sold $112K | +0.9% (−0.1% vs SPY) | +2.8% (−0.3% vs SPY) | +5.3% (−0.8% vs SPY) |
Insiders’ record here
In the year on the chart, Gentex's insiders reported 0 open-market buys ($0) and 4 sales ($632K). Of the 4 old enough to score, 4 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale −0.4%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
Gentex: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.