Repligen's top three insider shareholders as of April 28, 2026 are Karen A Dawes (Director, 91.82K shares), Anthony Hunt (Chief Executive Officer, 89.06K shares), Olivier Loeillot (Chief Executive Officer, 54.25K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Karen A Dawes | - | 91,821 | 0 | 18 Dec, 2025 |
| Anthony Hunt | Chief Executive Officer | 89,062 | 0 | 03 Mar, 2026 |
| Olivier Loeillot | Chief Executive Officer | 54,246 | 0 | 22 Apr, 2026 |
| Jon Snodgres | Chief Financial Officer | 37,381 | 0 | 16 May, 2023 |
| Jon Snodgres | Chief Financial Officer | 37,381 | 0 | 16 May, 2023 |
| Glenn P Muir | - | 36,622 | 0 | 17 Dec, 2025 |
| Christine Gebski | - | 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 |
| 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 |
| 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 |
| Thomas F Jr Ryan | - | 1,457 | 0 | 02 Mar, 2022 |
| Martin D Madaus | - | 0 | 11 | 08 May, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 21 Apr, 2026 | Olivier Loeillot | Common Stock | D | 3,832 | $140.00 | 54,246 | D | S |
| 21 Apr, 2026 | Olivier Loeillot | Common Stock | D | 3,832 | $140.00 | 54,246 | D | S |
| 21 Apr, 2026 | Olivier Loeillot | Common Stock | D | 3,832 | $140.00 | 54,246 | D | S |
| 21 Apr, 2026 | Olivier Loeillot | Common Stock | D | 3,832 | $140.00 | 54,246 | D | S |
| 21 Apr, 2026 | Olivier Loeillot | Common Stock | D | 3,832 | $140.00 | 54,246 | D | S |
| 05 Mar, 2026 | Ralf Kuriyel | Common Stock | A | 5,284 | $0.00 | 20,062 | D | A |
| 05 Mar, 2026 | Olivier Loeillot | Common Stock | A | 24,134 | $0.00 | 58,078 | D | A |
| 05 Mar, 2026 | Jason K Garland | Common Stock | A | 7,751 | $0.00 | 20,092 | D | A |
| 05 Mar, 2026 | James Bylund | Common Stock | A | 7,751 | $0.00 | 25,423 | 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 | Ralf Kuriyel | Stock Option (Right to Buy) | A | 5,669 | $0.00 | 5,669 | 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 | 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 | 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 |
| 02 Mar, 2026 | Anthony Hunt | Common Stock | D | 9,897 | $124.97 | 89,062 | D | F |
| 02 Mar, 2026 | Brian Robb Douglass | Common Stock | D | 221 | $124.97 | 8,319 | D | F |
| 27 Feb, 2026 | Ralf Kuriyel | Common Stock | D | 444 | $128.73 | 15,618 | D | F |