| $350M | ||
| $217M | ||
| $172M | ||
| $109M | ||
| $107M | ||
| $104M |
Buys | $0 | 0 | 0 |
Sells | $13,162,023 | 12 | 100 |
| DAWES KAREN A | director | 0 | $0 | 1 | $44,275 | $-44,275 |
| Garland Jason K | CFO | 0 | $0 | 2 | $185,785 | $-185,785 |
| Bylund James | Chief Operating Officer | 0 | $0 | 1 | $331,301 | $-331,301 |
| Loeillot Olivier | Chief Executive Officer | 0 | $0 | 6 | $5.59M | $-5.59M |
| Hunt Anthony | director | 0 | $0 | 2 | $7.01M | $-7.01M |
Repligen Corporation specializes in the creation and distribution of advanced bioprocessing technologies and integrated systems. These solutions are vital for various stages of biological drug production, serving clients across North America, Europe, the Asia Pacific region, and other international markets. The company's diverse product portfolio includes crucial components for biomanufacturing. This encompasses Protein A ligands, which serve as the key binding elements within Protein A affinity chromatography resins, as well as specialized …
Over the last 12 months, insiders at Repligen Corporation have bought $0 and sold $13.16M worth of Repligen Corporation stock.
On average, over the past 5 years, insiders at Repligen Corporation have bought $296,907 and sold $12.76M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 1,800 shares for transaction amount of $201,830 was made by Madaus Martin D (director) on 2025‑08‑08.
| 2026-10-05 | Sale | Loeillot Olivier | Chief Executive Officer | 5,535 0.0097% | $187.29 | $1.04M | -6.63% | |
| 2026-09-24 | Sale | Loeillot Olivier | Chief Executive Officer | 4,542 0.008% | $190.00 | $862,980 | -6.51% | |
| 2026-09-21 | Sale | Loeillot Olivier | Chief Executive Officer | 5,426 0.0098% | $180.00 | $976,680 | -1.11% | |
| 2026-08-20 | Sale | Loeillot Olivier | Chief Executive Officer | 5,426 0.0096% | $180.00 | $976,680 | -1.43% | |
| 2026-07-16 | Sale | Garland Jason K | CFO | 530 0.0009% | $150.00 | $79,500 | +17.62% | |
| 2026-06-25 | Sale | Garland Jason K | CFO | 733 0.0013% | $145.00 | $106,285 | +16.79% | |
| 2026-04-21 | Sale | Loeillot Olivier | Chief Executive Officer | 3,832 0.0072% | $140.00 | $536,480 | +10.92% | |
| 2025-12-17 | Sale | DAWES KAREN A | director | 275 0.0005% | $161.00 | $44,275 | -8.49% | |
| 2025-11-25 | Sale | Loeillot Olivier | Chief Executive Officer | 7,041 0.0131% | $170.00 | $1.2M | -14.93% | |
| 2025-11-18 | Sale | Bylund James | Chief Operating Officer | 2,191 0.0038% | $151.21 | $331,301 | -3.90% | |
| 2025-11-13 | Sale | Hunt Anthony | director | 20,000 0.0365% | $154.61 | $3.09M | -2.20% | |
| 2025-11-12 | Sale | Hunt Anthony | director | 25,000 0.0488% | $156.88 | $3.92M | -6.55% | |
| 2025-09-10 | Sale | Hunt Anthony | director | 29,111 0.0519% | $120.52 | $3.51M | +19.44% | |
| 2025-08-08 | Madaus Martin D | director | 1,800 0.0032% | $112.13 | $201,830 | +22.10% | ||
| 2025-05-15 | Sale | Hunt Anthony | director | 26,447 0.0472% | $123.71 | $3.27M | +2.79% | |
| 2025-03-17 | Sale | Hunt Anthony | director | 26,756 0.0477% | $152.51 | $4.08M | -13.55% | |
| 2025-03-17 | Pax Margaret | director | 250 0.0004% | $150.69 | $37,673 | -13.55% | ||
| 2024-11-21 | Sale | Hunt Anthony | director | 24,246 0.0431% | $139.67 | $3.39M | -1.64% | |
| 2024-09-10 | Sale | Hunt Anthony | director | 22,191 0.0393% | $145.37 | $3.23M | -5.66% | |
| 2024-08-02 | Sale | KURIYEL RALF | Senior VP, R&D | 7,148 0.0126% | $159.35 | $1.14M | -11.90% |
| DAWES KAREN A | director | 91821 0.1446% | $16.37M | 5 | 22 | +21.46% |
| Hunt Anthony | director | 80743 0.1272% | $14.39M | 1 | 33 | +13.81% |
| HERLIHY WALTER C | PRESIDENT, CEO | 262430 0.4133% | $46.78M | 1 | 15 | +58.42% |
| Goldberg Alfred Lewis | director | 105000 0.1654% | $18.72M | 1 | 0 | +15.65% |
| RUSCHE JAMES R | Senior Vice President | 96849 0.1525% | $17.27M | 2 | 12 | +25.25% |
| COOPER GLENN L MD | director | 59709 0.094% | $10.64M | 2 | 1 | <0.0001% |
| WITT DANIEL P | Senior Vice President | 10000 0.0158% | $1.78M | 1 | 9 | +54.56% |
| Henry Earl Webb | director | 5000 0.0079% | $891,350.00 | 1 | 0 | +0.99% |
| BARTHELEMY NICOLAS | director | 4668 0.0074% | $832,164.36 | 1 | 7 | +13.81% |
| EGLINTON MANNER CARRIE | director | 2106 0.0033% | $375,436.62 | 1 | 0 | <0.0001% |
| GRIFFITH MICHAEL A | director | 1932 0.003% | $344,417.64 | 1 | 1 | +35.58% |
| Madaus Martin D | director | 1800 0.0028% | $320,886.00 | 5 | 0 | +10.38% |
| RYAN THOMAS F JR | director | 1457 0.0023% | $259,739.39 | 5 | 29 | +4.79% |
| Pax Margaret | director | 1043 0.0016% | $185,935.61 | 1 | 0 | <0.0001% |
| Increased Positions | 254 | +50.1% | 10M | +16.68% |
| Decreased Positions | 213 | -42.01% | 7M | -12.37% |
| New Positions | 98 | New | 3M | New |
| Sold Out Positions | 63 | Sold Out | 2M | Sold Out |
| Total Postitions | 548 | +8.09% | 63M | +4.31% |
| Blackrock, Inc. | $1.01M | 10.96% | 6.14M | +61,300 | +1.01% | 2025-09-30 |
| Vanguard Group Inc | $829,013.00 | 9.01% | 5.04M | -32,981 | -0.65% | 2025-09-30 |
| Price T Rowe Associates Inc /Md/ | $576,438.00 | 6.26% | 3.51M | -3M | -46.89% | 2025-09-30 |
| United Capital Financial Advisors, Llc | $452,939.00 | 4.92% | 2.76M | +3M | New | 2025-09-30 |
| Fmr Llc | $442,301.00 | 4.81% | 2.69M | +1M | +66.81% | 2025-09-30 |
| State Street Corp | $296,082.00 | 3.22% | 1.8M | +178,913 | +11.03% | 2025-09-30 |
| Citadel Advisors Llc | $276,884.00 | 3.01% | 1.68M | +621,664 | +58.48% | 2025-09-30 |
| Point72 Asset Management, L.P. | $236,782.00 | 2.57% | 1.44M | -472,469 | -24.7% | 2025-09-30 |
| Holocene Advisors, Lp | $226,327.00 | 2.46% | 1.38M | +440,290 | +47% | 2025-09-30 |
| Champlain Investment Partners, Llc | $220,105.00 | 2.39% | 1.34M | -61,842 | -4.41% | 2025-09-30 |