RGEN
insider transactionsREPLIGEN CORP — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-3.8K
0 buy · 3.8K sell
Net value · 90d
-$536.5K
$0 in · $536.5K out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
1
0 buy · 3.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
30.0K sh
Own +8%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +49%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +25%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +18%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +3%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +34%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +22%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +1%
-
Grant·A
Director
$0
2.2K sh
Own New
-
Grant·A
Director
$0
995 sh
Own +22%
-
Exercise·M
Director
$0
2.4K sh
Own New
-
Exercise·M
Director
$94.3K
2.4K sh · $38.76
Own +7%
-
Other·F
CHIEF PRODUCT OFFICER
$42.2K
334 sh · $126.43
Own -4%
-
Sell·S
Olivier Loeillot KEY
Chief Executive Officer · 10b5-1
$536.5K
3.8K sh · $140.00
Own -7%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 28, 2026 | Glenn P Muir | Grant A | 30.0K | $0 |
| May 14, 2026 | Margaret Pax | Grant A | 2.2K | $0 |
| May 14, 2026 | Margaret Pax | Grant A | 995 | $0 |
| May 14, 2026 | Rohin Mhatre | Grant A | 2.2K | $0 |
| May 14, 2026 | Rohin Mhatre | Grant A | 995 | $0 |
| May 14, 2026 | Martin D Madaus | Grant A | 2.2K | $0 |
| May 14, 2026 | Martin D Madaus | Grant A | 995 | $0 |
| May 14, 2026 | Glenn P Muir | Grant A | 2.2K | $0 |
| May 14, 2026 | Glenn P Muir | Grant A | 995 | $0 |
| May 14, 2026 | Konstantin Konstantinov | Grant A | 2.2K | $0 |
| May 14, 2026 | Konstantin Konstantinov | Grant A | 995 | $0 |
| May 14, 2026 | Manner Carrie Eglinton | Grant A | 2.2K | $0 |
| May 14, 2026 | Manner Carrie Eglinton | Grant A | 995 | $0 |
| May 14, 2026 | Karen A Dawes | Grant A | 2.2K | $0 |
| May 14, 2026 | Karen A Dawes | Grant A | 995 | $0 |
| May 14, 2026 | Nicolas Barthelemy | Grant A | 2.2K | $0 |
| May 14, 2026 | Nicolas Barthelemy | Grant A | 995 | $0 |
| May 7, 2026 | Glenn P Muir | Exercise M | 2.4K | $0 |
| May 7, 2026 | Glenn P Muir | Exercise M | 2.4K | $94.3K |
| May 7, 2026 | Brian Robb Douglass | Other F | 334 | $42.2K |
| Apr 21, 2026 | Olivier Loeillot KEY 10b5-1 | Sell S | 3.8K | $536.5K |
About RGEN insider trading
This page tracks insider transactions for REPLIGEN CORP (RGEN) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.