As of the latest Form 4 filed May 22, 2026.
What Gentex Corporation insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 44 most recent filings for GNTX.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-05-22 | 2026-05-21 | Pink Billy Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | Zang Ling Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | Starkoff Kathleen Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | BROWN LESLIE L Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | Schaum Richard O Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | DEUR GARTH Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | WALKER BRIAN C Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-21 | KENNEDY JOHN C Director | AAward | +5.63K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-15 | ANDERSON JOSEPH B JR Director | SSale | −5.94K | $22.98 | $136K | No | Form 4 ↗ |
| 2026-05-15 | 2026-05-15 | WALKER BRIAN C Director | SSale | −5.94K | $22.98 | $136K | No | Form 4 ↗ |
| 2026-05-05 | 2026-05-05 | BROWN LESLIE L Director | SSale | −10.8K | $22.85 | $246K | No | Form 4 ↗ |
| 2026-05-05 | 2026-05-05 | BROWN LESLIE L, Director | MExercise | +7.00K | $18.70 | $131K | No | Form 4 ↗ |
| 2026-05-05 | 2026-05-05 | BROWN LESLIE L, Director | MExercise | +7.00K | $15.74 | $110K | No | Form 4 ↗ |
| 2026-04-30 | 2026-04-30 | Schaum Richard O Director | SSale | −4.82K | $23.31 | $112K | No | Form 4 ↗ |
| 2026-04-30 | 2026-04-30 | Schaum Richard O, Director | MExercise | +7.00K | $15.74 | $110K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-19 | Boehm Neil Chief Technology Officer | AAward | +15.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-19 | Chiodo Matthew Vice President of Sales | AAward | +12.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-19 | Ryan Scott P General Counsel | AAward | +11.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-19 | Downing Steven R President and CEO | AAward | +43.5K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-19 | Nash Kevin C Chief Financial Officer | AAward | +13.9K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Boehm Neil Chief Technology Officer | SSale | −2.33K | $24.82 | $57.9K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Boehm Neil, Chief Technology Officer | FTax | −3.61K | $24.89 | $89.8K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Boehm Neil, Chief Technology Officer | SSale | −8.92K | $24.82 | $221K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Boehm Neil, Chief Technology Officer | FTax | −14.2K | $24.89 | $352K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Boehm Neil, Chief Technology Officer | AAward | +32.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Chiodo Matthew Vice President of Sales | SSale | −4.12K | $25.03 | $103K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Chiodo Matthew, Vice President of Sales | SSale | −15.7K | $25.03 | $393K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Chiodo Matthew, Vice President of Sales | FTax | −3.19K | $24.89 | $79.3K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Chiodo Matthew, Vice President of Sales | FTax | −12.6K | $24.89 | $313K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Chiodo Matthew, Vice President of Sales | AAward | +28.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Ryan Scott P General Counsel | SSale | −1.88K | $24.73 | $46.5K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Ryan Scott P, General Counsel | SSale | −7.14K | $24.73 | $177K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Ryan Scott P, General Counsel | FTax | −2.91K | $24.89 | $72.4K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Ryan Scott P, General Counsel | FTax | −11.5K | $24.89 | $286K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Ryan Scott P, General Counsel | AAward | +25.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Downing Steven R President and CEO | SSale | −35.0K | $24.75 | $866K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Downing Steven R, President and CEO | FTax | −14.0K | $24.89 | $349K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Downing Steven R, President and CEO | FTax | −54.3K | $24.89 | $1.35M | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Downing Steven R, President and CEO | AAward | +124K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Nash Kevin C Chief Financial Officer | SSale | −5.57K | $24.98 | $139K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Nash Kevin C, Chief Financial Officer | SSale | −6.32K | $24.98 | $158K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Nash Kevin C, Chief Financial Officer | FTax | −4.31K | $24.89 | $107K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Nash Kevin C, Chief Financial Officer | FTax | −16.9K | $24.89 | $420K | No | Form 4 ↗ |
| 2026-02-19 | 2026-02-17 | Nash Kevin C, Chief Financial Officer | AAward | +38.2K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also GNTX’s full analysis or the market-wide insider trading feed. The tabs above jump to GNTX’s other SEC data.
Source: SEC Form 4 filings for GNTX, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.