John A. Mulder is Director at GENTEX CORP (GNTX). They have made 28 open-market trades across 1 company since 2006, most recently 2021-07-27.
CIK 0001232671
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 28 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GNTX | 41,365 | $861K |
Shares reported on the most recent Form 4, priced at the 2021-07-28 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GNTX | SELL | 2021-07-27 | 2021-07-28 | $32.65 | $229K | -2.0% | -6.5% | +4.8% |
| GNTX | SELL | 2021-02-05 | 2021-02-08 | $34.81 | $427K | +1.4% | +3.8% | -0.1% |
| GNTX | SELL | 2021-02-04 | 2021-02-05 | $34.90 | $244K | -0.5% | +1.5% | +1.5% |
| GNTX | SELL | 2021-02-01 | 2021-02-04 | $34.19 | $30K | +2.0% | +2.2% | +1.2% |
| GNTX | SELL | 2020-11-02 | 2020-11-04 | $28.78 | $288K | +11.3% | +15.1% | +16.9% |
| GNTX | SELL | 2020-05-18 | 2020-05-20 | $25.46 | $224K | +6.8% | +7.2% | +9.1% |
| GNTX | SELL | 2019-10-23 | 2019-10-25 | $28.00 | $196K | +4.5% | +2.3% | +10.6% |
| GNTX | SELL | 2019-06-11 | 2019-09-16 | $26.04 | $260K | +0.8% | +0.6% | +4.2% |
| GNTX | SELL | 2018-06-19 | 2018-06-21 | $25.00 | $125K | -8.0% | -9.2% | -10.8% |
| GNTX | SELL | 2018-01-29 | 2018-01-31 | $23.51 | $611K | -5.6% | -3.8% | -4.0% |
| GNTX | SELL | 2017-06-01 | 2017-06-05 | $19.22 | $192K | +1.6% | +1.0% | -3.5% |
| GNTX | SELL | 2017-03-30 | 2017-04-03 | $21.29 | $319K | -3.7% | -3.7% | -8.5% |
| GNTX | SELL | 2016-08-10 | 2016-08-12 | $18.07 | $361K | -1.4% | -3.6% | -6.7% |
| GNTX | SELL | 2016-08-10 | 2016-08-12 | $18.07 | $361K | -1.4% | -3.6% | -6.7% |
| GNTX | SELL | 2015-11-04 | 2015-11-06 | $16.61 | $100K | -13.2% | -0.5% | -14.0% |
| GNTX | SELL | 2015-02-06 | 2015-02-09 | $17.25 | $207K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2014-08-27 | 2014-08-28 | $29.57 | $126K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2014-02-10 | 2014-02-12 | $31.43 | $377K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2012-12-21 | 2012-12-21 | $18.60 | $149K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2010-12-07 | 2010-12-08 | $27.15 | $815K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2010-11-08 | 2010-11-09 | $22.00 | $440K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2010-05-03 | 2010-05-05 | $21.95 | $510K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2010-02-11 | 2010-02-12 | $18.71 | $225K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2009-06-11 | 2009-06-12 | $13.55 | $41K | -13.2% | -0.5% | -0.5% |
| GNTX | SELL | 2008-08-12 | 2008-08-13 | $16.19 | $162K | -13.2% | -0.5% | -0.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.