Margaret Pax is Director at REPLIGEN CORP (RGEN). They have made 1 open-market trade across 1 company since 2025, most recently 2026-05-14.
CIK 0001999772
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.
1 open-market purchase totalling $38K since 2025, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| RGEN | 3,011 | $528K |
Shares reported on the most recent Form 4, priced at the 2026-05-18 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| RGEN | BUY | 2025-03-17 | 2025-03-18 | $150.69 | $38K | -7.4% | -9.8% | -12.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.