John Richard Stamm is Director at Vertex, Inc. (VERX). They have made 11 open-market trades across 1 company since 2021, most recently 2026-06-10.
CIK 0001818885
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 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| VERX | 32,685 | $520K |
Shares reported on the most recent Form 4, priced at the 2026-06-12 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VERX | SELL | 2024-12-06 | 2024-12-10 | $56.11 | $428K | -3.1% | -5.6% | -43.6% |
| VERX | SELL | 2024-11-22 | 2024-11-27 | $53.81 | $135K | +0.5% | -3.0% | -21.8% |
| VERX | SELL | 2024-09-12 | 2024-09-16 | $35.42 | $531K | +1.0% | +16.7% | +45.6% |
| VERX | SELL | 2024-08-22 | 2024-08-26 | $35.95 | $575K | -5.7% | -1.3% | +46.7% |
| VERX | SELL | 2024-03-05 | 2024-03-07 | $29.48 | $192K | +1.5% | +8.1% | +18.1% |
| VERX | SELL | 2023-12-15 | 2023-12-19 | $26.85 | $269K | -1.6% | -7.4% | +9.4% |
| VERX | SELL | 2023-08-28 | 2023-08-30 | $22.41 | $479K | -5.7% | +1.4% | +24.8% |
| VERX | SELL | 2023-03-13 | 2023-03-15 | $18.37 | $435K | +3.2% | +20.8% | +22.1% |
| VERX | SELL | 2021-12-03 | 2021-12-06 | $16.88 | $203K | -5.4% | -14.7% | -25.1% |
| VERX | SELL | 2021-08-19 | 2021-08-25 | $19.17 | $333K | -7.9% | -11.1% | -10.8% |
| VERX | SELL | 2021-06-15 | 2021-06-17 | $18.98 | $304K | +6.8% | -11.1% | -13.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.