Robert Aspbury is President at Certara, Inc. (CERT). They have made 6 open-market trades across 1 company since 2021, most recently 2026-04-01.
CIK 0001834221
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 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CERT | 332,442 | $3.1M |
Shares reported on the most recent Form 4, priced at the 2026-04-03 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CERT | SELL | 2021-11-11 | 2021-11-15 | $39.56 | $1.7M | -22.7% | -23.6% | -28.7% |
| CERT | SELL | 2021-10-01 | 2021-10-04 | $33.51 | $1.3M | +17.9% | +37.7% | -10.3% |
| CERT | SELL | 2021-09-01 | 2021-09-02 | $33.77 | $1.3M | +1.6% | -7.4% | -22.8% |
| CERT | SELL | 2021-08-11 | 2021-08-13 | $27.54 | $1.1M | +8.7% | +26.6% | +37.8% |
| CERT | SELL | 2021-07-01 | 2021-07-06 | $28.03 | $1.1M | -8.9% | +3.7% | +18.5% |
| CERT | SELL | 2021-06-14 | 2021-06-15 | $27.59 | $1.1M | +6.3% | -8.1% | +35.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.