Repligen Corp
RGEN- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000730272
In the last 90 days, Repligen Corp insiders filed 0 open-market purchases and 5 sales; 481 institutions reported holding it in 13F filings for Q2 2026, worth $9.00B in total; 3 superinvestors hold it, including Maverick Capital and Duquesne Family Office.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Repligen Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 5 filings
- 2 insiders, $5.00M in total
- Insiders trading
- 2
- Net value
- −$5.00M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Repligen Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Loeillot Olivier | Chief Executive Officer | 48,369 | Sep 25, 2026 | 9 |
| Hughes Violetta | CHIEF ACCOUNTING OFFICER | 6,331 | Sep 2, 2026 | 1 |
| Garland Jason K | CFO | 18,829 | Jul 17, 2026 | 4 |
| Muir Glenn P | Director | 40,051 | May 18, 2026 | 3 |
| Dawes Karen A | Director | 92,816 | May 18, 2026 | 2 |
| Barthelemy Nicolas | Director | 5,436 | May 18, 2026 | 1 |
| Madaus Martin D | Director | 6,581 | May 18, 2026 | 1 |
| Eglinton Manner Carrie | Director | 5,461 | May 18, 2026 | 1 |
| Konstantinov Konstantin | Director | 3,889 | May 18, 2026 | 1 |
| Mhatre Rohin | Director | 5,014 | May 18, 2026 | 1 |
| Pax Margaret | Director | 3,011 | May 18, 2026 | 1 |
| Douglass Brian Robb | CHIEF PRODUCT OFFICER | 7,985 | May 8, 2026 | 3 |
| Kuriyel Ralf | Senior VP, R&D | 20,062 | Mar 23, 2026 | 3 |
| Bylund James | Chief Operating Officer | 25,423 | Mar 23, 2026 | 4 |
| Hunt Anthony | Director | 89,062 | Mar 3, 2026 | 4 |
| Gebski Christine | See Remarks | 27,419 | May 15, 2024 | 0 |
| Snodgres Jon | Chief Financial Officer | 37,381 | May 16, 2023 | 0 |
| Ryan Thomas F Jr | Director | 1,457 | Mar 2, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 14, 2025 (view filing) | Nov 13 | 1 day | Hunt AnthonyDirector | SSale | −20.0K | $154.61 | −$3.09M | −19.9%80.7K after | 7 lots |
| Nov 19, 2025 (view filing) | Nov 18 | 1 day | Bylund JamesChief Operating Officer | SSale | −2.19K | $151.21 | −$331.3K | −9.2%21.5K after | |
| Nov 26, 2025 (view filing) | Nov 25 | 1 day | Loeillot OlivierChief Executive Officer | SSale | −7.04K | $170.00 | −$1.20M | −16.4%35.9K after | 10b5-1 |
| Dec 18, 2025 (view filing) | Dec 17 | 1 day | Dawes Karen ADirector | SSale | −275 | $161.00 | −$44.3K | −0.3%91.8K after | |
| Apr 22, 2026 (view filing) | Apr 21 | 1 day | Loeillot OlivierChief Executive Officer | SSale | −3.83K | $140.00 | −$536.5K | −6.6%54.2K after | 10b5-1 |
| Jun 26, 2026 (view filing) | Jun 25 | 1 day | Garland Jason KCFO | SSale | −733 | $145.00 | −$106.3K | −3.6%19.4K after | 10b5-1 |
| Jul 17, 2026 (view filing)4:40 PM ET | Jul 16 | 1 day | Garland Jason KCFO | SSale | −530 | $150.00 | −$79.5K | −2.7%18.8K after | 10b5-1 |
| Aug 21, 2026 (view filing)4:06 PM ET | Aug 20 | 1 day | Loeillot OlivierChief Executive Officer | SSale | −5.43K | $180.00 | −$976.7K | −9.1%54.2K after | 10b5-1 |
| Sep 8, 2026 (view filing)4:13 PM ET | Sep 4 | 4 days | Loeillot OlivierChief Executive Officer | SSale | −3.04K | $165.90 | −$503.5K | −5.9%48.4K after | 10b5-1 |
| Sep 22, 2026 (view filing)4:07 PM ET | Sep 21 | 1 day | Loeillot OlivierChief Executive Officer | SSale | −5.43K | $180.00 | −$976.7K | −10.1%48.4K after | 10b5-1 |
| Sep 25, 2026 (view filing)4:09 PM ET | Sep 24 | 1 day | Loeillot OlivierChief Executive Officer | SSale | −12.9K | $190.00 | −$2.46M | −21.1%48.4K after | 2 lots10b5-1 |