Form 4: Repligen CEO Sells Shares
Insider Transaction (Form 4)
Olivier Loeillot, Chief Executive Officer and a Director of Repligen Corp, sold 5,535 shares of common stock on October 5, 2026.
Summary
- Open-market sale: disposed of 1,333 Common Stock at $178.75 ($238,274) on October 5, 2026; holds 45,788 after (Direct).
- Option exercise/conversion: acquired 4,202 Common Stock at $154.96 ($651,142) on October 5, 2026; holds 49,990 after (Direct).
- Open-market sale: disposed of 4,202 Common Stock at $190.00 ($798,380) on October 5, 2026; holds 45,788 after (Direct).
- Option exercise/conversion: disposed of 4,202 Stock Option (Right to Buy) on October 5, 2026; holds 8,405 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $1,036,654 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Olivier Loeillot — Director, Officer (Chief Executive Officer)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-10-05 | Open-market sale | Common Stock | 1,333 | $179 | $238.3K | 45,788 |
| 2026-10-05 | Option exercise/conversion | Common Stock | 4,202 | $155 | $651.1K | 49,990 |
| 2026-10-05 | Open-market sale | Common Stock | 4,202 | $190 | $798.4K | 45,788 |
| 2026-10-05 | Option exercise/conversion | Stock Option (Right to Buy) | 4,202 | — | — | 8,405 |
Key Dates
| Date | Description |
|---|---|
| 2026-10-05 | Open-market sale (1,333 shares) |
| 2026-10-05 | Option exercise/conversion (4,202 shares) |
| 2026-10-05 | Open-market sale (4,202 shares) |
| 2026-10-05 | Option exercise/conversion (4,202 shares) |
Keywords
insider transaction, Form 4, RGEN, REPLIGEN CORP, bearish, Olivier Loeillot
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