John Anthony DiBella II is CRO at Simulations Plus, Inc. (SLP). They have made 2 open-market trades across 1 company since 2021, most recently 2026-08-03.
CIK 0001544167
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 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SLP | 85,140 | $1.6M |
Shares reported on the most recent Form 4, priced at the 2026-08-04 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SLP | SELL · 10b5-1 | 2026-08-03 | 2026-08-04 | $18.28 | $18K | +0.1% | +0.4% | — |
| SLP | SELL · 10b5-1 | 2026-07-06 | 2026-07-08 | $18.36 | $18K | -0.3% | +0.3% | N/A |
| SLP | SELL · 10b5-1 | 2026-06-03 | 2026-06-04 | $16.50 | $17K | +10.0% | +10.8% | +11.3% |
| SLP | SELL · 10b5-1 | 2026-05-04 | 2026-05-05 | $14.98 | $15K | -20.2% | -0.5% | +9.4% |
| SLP | SELL · 10b5-1 | 2026-04-15 | 2026-04-16 | $13.37 | $13K | +4.8% | -2.8% | +28.6% |
| SLP | SELL · 10b5-1 | 2023-12-22 | 2023-12-26 | $45.16 | $489K | -14.3% | -14.5% | -9.1% |
| SLP | SELL | 2023-03-02 | 2023-03-06 | $38.67 | $1.9M | +9.8% | +8.0% | +21.9% |
| SLP | SELL | 2021-01-27 | 2021-01-29 | $80.00 | $189K | +3.8% | -8.1% | -19.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.