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 | Owns After | Date |
|---|---|---|---|---|---|---|---|
| DAWES KAREN A | — | Sale | 275 | $161.00 | $44,275 | 91,821 | Dec 17, 2025 |
| MUIR GLENN P | — | Option Exercise | 3,366 | $26.12 | $87,920 | 36,622 | Dec 16, 2025 |
| Hunt Anthony | — | Other | 2,000 | — | — | 98,959 | Dec 4, 2025 |
| Loeillot Olivier | Chief Executive Officer | Sale | 7,041 | $170.00 | $1,196,970 | 35,898 | Nov 25, 2025 |
| Bylund James | Chief Operating Officer | Sale | 2,191 | $151.21 | $331,301 | 21,520 | Nov 18, 2025 |
| Hunt Anthony | — | Option Exercise | 2,952 | $33.87 | $99,984 | 83,695 | Nov 13, 2025 |
| Hunt Anthony | — | Sale | 11,096 | $158.01 | $1,753,279 | 101,207 | Nov 12, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 1,248 | $145.23 | $181,247 | 42,939 | Oct 2, 2025 |
| Garland Jason K | CFO | Tax Withholding | 412 | $121.68 | $50,132 | 13,383 | Sep 25, 2025 |
| Hunt Anthony | — | Sale | 7,584 | $121.42 | $920,849 | 102,922 | Sep 10, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 2,506 | $116.18 | $291,147 | 44,187 | Sep 3, 2025 |
| Hughes Violetta | CHIEF ACCOUNTING OFFICER | Award / Grant | 4,142 | — | — | 4,142 | Sep 2, 2025 |
| Madaus Martin D | — | Purchase | 1,800 | $112.13 | $201,834 | 1,800 | Aug 8, 2025 |
| BARTHELEMY NICOLAS | — | Award / Grant | 973 | — | — | 4,441 | May 15, 2025 |
| Konstantinov Konstantin | — | Award / Grant | 973 | — | — | 2,894 | May 15, 2025 |
| MUIR GLENN P | — | Award / Grant | 973 | — | — | 33,256 | May 15, 2025 |
| EGLINTON MANNER CARRIE | — | Award / Grant | 973 | — | — | 4,466 | May 15, 2025 |
| DAWES KAREN A | — | Award / Grant | 973 | — | — | 92,096 | May 15, 2025 |
| Madaus Martin D | — | Award / Grant | 973 | — | — | 5,586 | May 15, 2025 |
| Pax Margaret | — | Award / Grant | 973 | — | — | 2,016 | May 15, 2025 |
| Mhatre Rohin | — | Award / Grant | 973 | — | — | 4,019 | May 15, 2025 |
| Hunt Anthony | — | Sale | 6,533 | $124.34 | $812,313 | 110,129 | May 15, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 454 | $128.50 | $58,339 | 23,711 | Apr 1, 2025 |
| Hunt Anthony | — | Option Exercise | 21,756 | $59.52 | $1,294,917 | 163,057 | Mar 17, 2025 |
| Pax Margaret | — | Purchase | 250 | $150.69 | $37,673 | 1,043 | Mar 17, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 175 | $142.44 | $24,927 | 24,165 | Mar 13, 2025 |
| Garland Jason K | CFO | Award / Grant | 6,435 | — | — | 13,795 | Mar 3, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 386 | $155.38 | $59,977 | 16,062 | Mar 3, 2025 |
| Hunt Anthony | — | Tax Withholding | 10,142 | $155.38 | $1,575,864 | 136,301 | Mar 3, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 1,239 | $155.38 | $192,516 | 23,959 | Mar 3, 2025 |
| Loeillot Olivier | Chief Executive Officer | Award / Grant | 14,480 | — | — | 46,693 | Mar 3, 2025 |
| Garland Jason K | CFO | Tax Withholding | 316 | $156.54 | $49,467 | 7,360 | Feb 27, 2025 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 343 | $156.54 | $53,693 | 32,213 | Feb 27, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 1,285 | $156.54 | $201,154 | 18,763 | Feb 27, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 391 | $156.54 | $61,207 | 11,622 | Feb 27, 2025 |
| Hunt Anthony | — | Tax Withholding | 2,825 | $156.54 | $442,226 | 146,443 | Feb 27, 2025 |
| KURIYEL RALF | Senior VP, R&D | Tax Withholding | 275 | $164.74 | $45,304 | 12,013 | Feb 24, 2025 |
| Bylund James | Chief Operating Officer | Tax Withholding | 543 | $164.74 | $89,454 | 20,048 | Feb 24, 2025 |
| Hunt Anthony | — | Tax Withholding | 2,380 | $164.74 | $392,081 | 149,268 | Feb 24, 2025 |
| Hunt Anthony | — | Option Exercise | 11,808 | $33.87 | $399,937 | 151,648 | Dec 5, 2024 |
| Hunt Anthony | — | Option Exercise | 24,246 | $33.87 | $821,212 | 164,086 | Nov 21, 2024 |
| Garland Jason K | CFO | Tax Withholding | 367 | $123.41 | $45,291 | 7,676 | Nov 20, 2024 |
| Loeillot Olivier | Chief Executive Officer | Tax Withholding | 861 | $123.41 | $106,256 | 32,556 | Nov 20, 2024 |
| MUIR GLENN P | — | Option Exercise | 19,000 | $36.29 | $689,510 | 32,283 | Nov 19, 2024 |
| Hunt Anthony | — | Option Exercise | 10,000 | $33.87 | $338,700 | 162,031 | Sep 10, 2024 |
| Loeillot Olivier | Chief Executive Officer | Award / Grant | 17,631 | — | — | 33,417 | Sep 3, 2024 |
| Hunt Anthony | — | Disposition | 13,146 | — | — | 152,031 | Sep 3, 2024 |
| KURIYEL RALF | Senior VP, R&D | Sale | 175 | $158.85 | $27,799 | 12,288 | Aug 2, 2024 |
| KURIYEL RALF | Senior VP, R&D | Sale | 4,465 | $165.67 | $739,717 | 19,261 | Aug 1, 2024 |
| MUIR GLENN P | — | Option Exercise | 5,000 | $36.29 | $181,450 | 13,283 | Aug 1, 2024 |