Updated Jul 16, 2026 · Last SEC filing 2026-05-22
GENTEX CORP (GNTX) has filed 11 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-22. 2 Form 8-K material event filings were reported by GNTX in the last 90 days. 2 Form 144 notices of proposed sale were filed for GNTX stock. InsiderAlpha tracks every GNTX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0000355811 |
|---|
| Form 4 filings (90d) | 11 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Form 144 notices (90d) | 2 |
| Latest Form 4 filing | 2026-05-22 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Zang Ling | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| Schaum Richard O | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| KENNEDY JOHN C | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| Pink Billy | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| BROWN LESLIE L | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| DEUR GARTH | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| Starkoff Kathleen | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| WALKER BRIAN C | Insider | A — Grant or award | 5.6K | $0.00 | — | SEC | |
| WALKER BRIAN C | Insider | S — Open-market sale | 5.9K | $22.98 | $136K | SEC | |
| ANDERSON JOSEPH B JR | Insider | S — Open-market sale | 5.9K | $22.98 | $136K | SEC | |
| BROWN LESLIE L | Insider | M — Option exercise | 7.0K | $18.70 | $131K | SEC | |
| BROWN LESLIE L | Insider | M — Option exercise | 7.0K | $15.74 | $110K | SEC | |
| BROWN LESLIE L | Insider | S — Open-market sale | 10.8K | $22.85 | $246K | SEC | |
| Ryan Scott P | General Counsel | A — Grant or award | 11.0K | $0.00 | — | SEC | |
| Boehm Neil | Chief Technology Officer | A — Grant or award | 15.0K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for GENTEX CORP (GNTX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| BROWN LESLIE L | 6 | $487K |
| WALKER BRIAN C | 2 | $136K |
| DEUR GARTH | 1 | — |
| Pink Billy | 1 | — |
| Zang Ling | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in GNTX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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