Olivier Loeillot is CEO at REPLIGEN CORP (RGEN). They have made 1 open-market trade across 1 company since 2025, most recently 2026-10-05.
CIK 0001995525
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 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| RGEN | 45,788 | $8.0M |
Shares reported on the most recent Form 4, priced at the 2026-10-06 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| RGEN | SELL · 10b5-1 | 2026-10-05 | 2026-10-06 | $187.29 | $1.0M | +0.2% | — | — |
| RGEN | SELL · 10b5-1 | 2026-09-24 | 2026-09-25 | $190.00 | $2.5M | -11.4% | — | — |
| RGEN | SELL · 10b5-1 | 2026-09-21 | 2026-09-22 | $180.00 | $977K | -3.0% | — | — |
| RGEN | SELL · 10b5-1 | 2026-09-04 | 2026-09-08 | $165.90 | $504K | +5.8% | -1.9% | — |
| RGEN | SELL · 10b5-1 | 2026-08-20 | 2026-08-21 | $180.00 | $977K | -4.0% | +0.3% | — |
| RGEN | SELL | 2026-04-21 | 2026-04-22 | $140.00 | $536K | -2.5% | -5.0% | +13.2% |
| RGEN | SELL · 10b5-1 | 2025-11-25 | 2025-11-26 | $170.00 | $1.2M | -7.7% | -4.5% | -22.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.