REPLIGEN CORP — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| DAWES KAREN A | — | Sale | 275 | $161.00 | $44,275 | Dec 17, 2025 |
| MUIR GLENN P | — | Option Exercise | 3,366 | $26.12 | $87,920 | Dec 16, 2025 |
| Hunt Anthony | — | Other | 2,000 | — | — | Dec 4, 2025 |
| Loeillot Olivier | Chief Executive Officer | Sale | 7,041 | $170.00 | $1,196,970 | Nov 25, 2025 |
| Bylund James | Chief Operating Officer | Sale | 2,191 | $151.21 | $331,301 | Nov 18, 2025 |
| Hunt Anthony | — | Option Exercise | 2,952 | $33.87 | $99,984 | Nov 13, 2025 |
| Hunt Anthony | — | Sale | 11,096 | $158.01 | $1,753,279 | Nov 12, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 1,248 | $145.23 | $181,247 | Oct 2, 2025 |
| Garland Jason K | CFO | Tax Withholding | 412 | $121.68 | $50,132 | Sep 25, 2025 |
| Hunt Anthony | — | Sale | 7,584 | $121.42 | $920,849 | Sep 10, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 2,506 | $116.18 | $291,147 | Sep 3, 2025 |
| Hughes Violetta | CHIEF ACCOUNTING OFFICER | Award / Grant | 4,142 | — | — | Sep 2, 2025 |
| Madaus Martin D | — | Purchase | 1,800 | $112.13 | $201,834 | Aug 8, 2025 |
| BARTHELEMY NICOLAS | — | Award / Grant | 973 | — | — | May 15, 2025 |
| Konstantinov Konstantin | — | Award / Grant | 973 | — | — | May 15, 2025 |
| MUIR GLENN P | — | Award / Grant | 973 | — | — | May 15, 2025 |
| EGLINTON MANNER CARRIE | — | Award / Grant | 973 | — | — | May 15, 2025 |
| DAWES KAREN A | — | Award / Grant | 973 | — | — | May 15, 2025 |
| Madaus Martin D | — | Award / Grant | 973 | — | — | May 15, 2025 |
| Pax Margaret | — | Award / Grant | 973 | — | — | May 15, 2025 |
| Mhatre Rohin | — | Award / Grant | 973 | — | — | May 15, 2025 |
| Hunt Anthony | — | Sale | 6,533 | $124.34 | $812,313 | May 15, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 454 | $128.50 | $58,339 | Apr 1, 2025 |
| Hunt Anthony | — | Option Exercise | 21,756 | $59.52 | $1,294,917 | Mar 17, 2025 |
| Pax Margaret | — | Purchase | 250 | $150.69 | $37,673 | Mar 17, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 175 | $142.44 | $24,927 | Mar 13, 2025 |
| Garland Jason K | CFO | Award / Grant | 6,435 | — | — | Mar 3, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 386 | $155.38 | $59,977 | Mar 3, 2025 |
| Hunt Anthony | — | Tax Withholding | 10,142 | $155.38 | $1,575,864 | Mar 3, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 1,239 | $155.38 | $192,516 | Mar 3, 2025 |
| Loeillot Olivier | Chief Executive Officer | Award / Grant | 14,480 | — | — | Mar 3, 2025 |
| Garland Jason K | CFO | Tax Withholding | 316 | $156.54 | $49,467 | Feb 27, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 343 | $156.54 | $53,693 | Feb 27, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 1,285 | $156.54 | $201,154 | Feb 27, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 391 | $156.54 | $61,207 | Feb 27, 2025 |
| Hunt Anthony | — | Tax Withholding | 2,825 | $156.54 | $442,226 | Feb 27, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 275 | $164.74 | $45,304 | Feb 24, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 543 | $164.74 | $89,454 | Feb 24, 2025 |
| Hunt Anthony | — | Tax Withholding | 2,380 | $164.74 | $392,081 | Feb 24, 2025 |
| Hunt Anthony | — | Option Exercise | 11,808 | $33.87 | $399,937 | Dec 5, 2024 |
| Hunt Anthony | — | Option Exercise | 24,246 | $33.87 | $821,212 | Nov 21, 2024 |
| Garland Jason K | CFO | Tax Withholding | 367 | $123.41 | $45,291 | Nov 20, 2024 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 861 | $123.41 | $106,256 | Nov 20, 2024 |
| MUIR GLENN P | — | Option Exercise | 19,000 | $36.29 | $689,510 | Nov 19, 2024 |
| Hunt Anthony | — | Option Exercise | 10,000 | $33.87 | $338,700 | Sep 10, 2024 |
| Loeillot Olivier | Chief Executive Officer | Award / Grant | 17,631 | — | — | Sep 3, 2024 |
| Hunt Anthony | — | Disposition | 13,146 | — | — | Sep 3, 2024 |
| KURIYEL RALF | Senior VP, R&D | Sale | 175 | $158.85 | $27,799 | Aug 2, 2024 |
| KURIYEL RALF | Senior VP, R&D | Sale | 4,465 | $165.67 | $739,717 | Aug 1, 2024 |
| MUIR GLENN P | — | Option Exercise | 5,000 | $36.29 | $181,450 | Aug 1, 2024 |