As of March 23, 2026, Repligen's top three insider holders are Karen A Dawes (Director, 91.82K shares), Anthony Hunt (Director, 89.06K shares), Jon Snodgres (Chief Financial Officer, 37.38K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Karen A Dawes | 91,821 | 0 | 18 Dec, 2025 | |
| Anthony Hunt | 89,062 | 0 | 03 Mar, 2026 | |
| Olivier Loeillot | Chief Executive Officer | 58,078 | 0 | 23 Mar, 2026 |
| Jon Snodgres | Chief Financial Officer | 37,381 | 0 | 16 May, 2023 |
| Glenn P Muir | 36,622 | 0 | 17 Dec, 2025 | |
| Olivier Loeillot | Chief Executive Officer | 33,944 | 0 | 03 Mar, 2026 |
| Christine Gebski | See Remarks | 27,419 | 0 | 15 May, 2024 |
| James Bylund | Chief Operating Officer | 25,423 | 0 | 23 Mar, 2026 |
| Jason K Garland | Cfo | 20,092 | 0 | 23 Mar, 2026 |
| Ralf Kuriyel | Senior Vp, Rd | 20,062 | 0 | 23 Mar, 2026 |
| James Bylund | Chief Operating Officer | 17,672 | 0 | 05 Mar, 2026 |
| Ralf Kuriyel | Senior Vp, Rd | 14,778 | 0 | 05 Mar, 2026 |
| Jason K Garland | Cfo | 12,341 | 0 | 03 Mar, 2026 |
| Brian Robb Douglass | Chief Product Officer | 8,319 | 0 | 03 Mar, 2026 |
| Martin D Madaus | 5,586 | 0 | 19 May, 2025 | |
| Manner Carrie Eglinton | 4,466 | 0 | 19 May, 2025 | |
| Manner Carrie Eglinton | 4,466 | 0 | 19 May, 2025 | |
| Nicolas Barthelemy | 4,441 | 0 | 21 May, 2025 | |
| Violetta Hughes | Chief Accounting Officer | 4,142 | 0 | 04 Sep, 2025 |
| Rohin Mhatre | 4,019 | 0 | 19 May, 2025 | |
| Konstantin Konstantinov | 2,894 | 0 | 19 May, 2025 | |
| Margaret Pax | 2,016 | 0 | 19 May, 2025 | |
| Martin D Madaus | 0 | 1,800 | 12 Aug, 2025 | |
| Thomas F Jr Ryan | 1,457 | 0 | 02 Mar, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 05 Mar, 2026 | Jason K Garland | Common Stock | A | 7,751 | $0.00 | 20,092 | D | A |
| 05 Mar, 2026 | Olivier Loeillot | Common Stock | A | 24,134 | $0.00 | 58,078 | D | A |
| 05 Mar, 2026 | Ralf Kuriyel | Common Stock | A | 5,284 | $0.00 | 20,062 | D | A |
| 05 Mar, 2026 | James Bylund | Common Stock | A | 7,751 | $0.00 | 25,423 | D | A |
| 05 Mar, 2026 | Ralf Kuriyel | Stock Option (Right to Buy) | A | 5,669 | $0.00 | 5,669 | D | A |
| 05 Mar, 2026 | Olivier Loeillot | Stock Option (Right to Buy) | A | 25,890 | $0.00 | 25,890 | D | A |
| 05 Mar, 2026 | James Bylund | Stock Option (Right to Buy) | A | 8,315 | $0.00 | 8,315 | D | A |
| 05 Mar, 2026 | Jason K Garland | Stock Option (Right to Buy) | A | 8,315 | $0.00 | 8,315 | D | A |
| 04 Mar, 2026 | James Bylund | Common Stock | A | 125 | $0.00 | 17,734 | D | A |
| 04 Mar, 2026 | Ralf Kuriyel | Common Stock | A | 125 | $0.00 | 14,820 | D | A |
| 04 Mar, 2026 | Ralf Kuriyel | Common Stock | A | 125 | $0.00 | 14,820 | D | A |
| 04 Mar, 2026 | James Bylund | Common Stock | A | 125 | $0.00 | 17,734 | D | A |
| 04 Mar, 2026 | Ralf Kuriyel | Common Stock | D | 42 | $125.84 | 14,778 | D | F |
| 04 Mar, 2026 | James Bylund | Common Stock | D | 62 | $125.84 | 17,672 | D | F |
| 04 Mar, 2026 | James Bylund | Common Stock | D | 62 | $125.84 | 17,672 | D | F |
| 04 Mar, 2026 | Ralf Kuriyel | Common Stock | D | 42 | $125.84 | 14,778 | D | F |
| 27 Feb, 2026 | James Bylund | Common Stock | D | 1,478 | $128.73 | 20,042 | D | F |
| 27 Feb, 2026 | Ralf Kuriyel | Common Stock | D | 444 | $128.73 | 15,618 | D | F |
| 02 Mar, 2026 | Brian Robb Douglass | Common Stock | D | 221 | $124.97 | 8,319 | D | F |
| 27 Feb, 2026 | Olivier Loeillot | Common Stock | D | 344 | $128.73 | 35,554 | D | F |