REPLIGEN CORP
Total Trades
48
Buys
6
Sells
27
Largest Trade
$1M+
Insiders
12
Institutional Funds
399
Inst. Value
$1M+
Activist Filings
19
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| DAWES KAREN A | Director | SELL | $15K–$50K | 275 | $161.00 | Dec 18, 2025 |
| Loeillot Olivier | CEO | SELL | $1M+ | 7K | $170.00 | Nov 26, 2025 |
| Bylund James | COO | SELL | $100K–$500K | 2K | $151.21 | Nov 19, 2025 |
| Hunt Anthony | Director | SELL | $1M+ | 20K | $154.61 | Nov 14, 2025 |
| Hunt Anthony | Director | EXERCISE | $50K–$100K | 3K | $33.87 | Nov 14, 2025 |
| Hunt Anthony | Director | EXERCISE | $500K+ | 25K | $33.87 | Nov 13, 2025 |
| Hunt Anthony | Director | SELL | $1M+ | 25K | $156.88 | Nov 13, 2025 |
| Hunt Anthony | Director | EXERCISE | $500K+ | 20K | $33.87 | Sep 11, 2025 |
| Hunt Anthony | Director | SELL | $1M+ | 29K | $120.52 | Sep 11, 2025 |
| Hunt Anthony | Director | SELL | $1M+ | 26K | $123.71 | May 16, 2025 |
| Hunt Anthony | Director | SELL | $1M+ | 27K | $152.51 | Mar 19, 2025 |
| Hunt Anthony | Director | EXERCISE | $1M+ | 27K | $54.73 | Mar 19, 2025 |
| Pax Margaret | Director | BUY | $15K–$50K | 250 | $150.69 | Mar 18, 2025 |
| Hunt Anthony | Director | EXERCISE | $500K+ | 24K | $33.87 | Nov 22, 2024 |
| Hunt Anthony | Director | SELL | $1M+ | 24K | $139.67 | Nov 22, 2024 |
| KURIYEL RALF | Senior VP, R&D | SELL | $500K+ | 4K | $165.67 | Aug 2, 2024 |
| Madaus Martin D | Director | BUY | $100K–$500K | 2K | $124.94 | Jun 14, 2024 |
| BARTHELEMY NICOLAS | Director | BUY | $100K–$500K | 1K | $125.45 | Jun 14, 2024 |
| Hunt Anthony | CEO | BUY | $100K–$500K | 2K | $124.08 | Jun 14, 2024 |
| Hunt Anthony | CEO | SELL | $1M+ | 20K | $168.26 | May 22, 2024 |
| DAWES KAREN A | Director | EXERCISE | $100K–$500K | 5K | $42.07 | Feb 29, 2024 |
| DAWES KAREN A | Director | SELL | $100K–$500K | 1K | $193.35 | Feb 29, 2024 |
| Bylund James | COO | EXERCISE | $50K–$100K | 940 | $94.33 | Feb 27, 2024 |
| Bylund James | COO | SELL | $500K+ | 4K | $198.08 | Feb 27, 2024 |
| Gebski Christine | See Remarks | SELL | $500K+ | 4K | $147.13 | Nov 13, 2023 |
| DAWES KAREN A | Director | SELL | $100K–$500K | 850 | $171.38 | Aug 30, 2023 |
| DAWES KAREN A | Director | EXERCISE | $100K–$500K | 7K | $18.12 | Aug 30, 2023 |
| Madaus Martin D | Director | BUY | $100K–$500K | 2K | $158.84 | May 9, 2023 |
| Snodgres Jon | CFO | SELL | $1M+ | 6K | $200.00 | Feb 17, 2023 |
| EGLINTON MANNER CARRIE | Director | BUY | $100K–$500K | 625 | $175.02 | Dec 15, 2022 |
| Hunt Anthony | CEO | EXERCISE | $500K+ | 25K | $33.87 | Nov 14, 2022 |
| Hunt Anthony | CEO | SELL | $1M+ | 25K | $200.00 | Nov 14, 2022 |
| DAWES KAREN A | Director | SELL | $100K–$500K | 775 | $227.17 | Sep 9, 2022 |
| Hunt Anthony | CEO | SELL | $1M+ | 26K | $224.73 | Sep 9, 2022 |
| Hunt Anthony | CEO | EXERCISE | $100K–$500K | 10K | $33.87 | Sep 9, 2022 |
| Snodgres Jon | CFO | SELL | $1M+ | 7K | $252.86 | Aug 17, 2022 |
| Snodgres Jon | CFO | EXERCISE | $100K–$500K | 4K | $117.37 | Aug 17, 2022 |
| KURIYEL RALF | Senior VP, R&D | SELL | $1M+ | 5K | $254.32 | Aug 12, 2022 |
| KURIYEL RALF | Senior VP, R&D | EXERCISE | $100K–$500K | 4K | $50.58 | Aug 12, 2022 |
| Gebski Christine | See Remarks | SELL | $500K+ | 3K | $243.01 | Aug 5, 2022 |
| Bylund James | COO | EXERCISE | $100K–$500K | 2K | $94.33 | Aug 4, 2022 |
| Bylund James | COO | SELL | $100K–$500K | 2K | $240.40 | Aug 4, 2022 |
| Snodgres Jon | CFO | SELL | $100K–$500K | 2K | $220.00 | Aug 2, 2022 |
| Hunt Anthony | CEO | SELL | $1M+ | 25K | $200.00 | Jul 22, 2022 |
| Hunt Anthony | CEO | EXERCISE | $500K+ | 20K | $32.76 | Jul 22, 2022 |
| DAWES KAREN A | Director | SELL | $1M+ | 15K | $150.51 | May 26, 2022 |
| RYAN THOMAS F JR | Director | SELL | $100K–$500K | 2K | $198.03 | Mar 3, 2022 |
| RYAN THOMAS F JR | Director | EXERCISE | $15K–$50K | 1K | $38.76 | Mar 3, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 399 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 1.7M | $1M+ | SH |
| Conestoga Capital Advisors, LLC | 1.1M | $1M+ | SH |
| Point72 Asset Management, L.P. | 1.0M | $1M+ | SH |
| Champlain Investment Partners, LLC | 1.0M | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 995K | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 936K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 845K | $1M+ | SH |
| CONGRESS ASSET MANAGEMENT CO | 746K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 728K | $1M+ | SH |
| Stephens Investment Management Group LLC | 657K | $1M+ | SH |
| DF DENT & CO INC | 496K | $1M+ | SH |
| NORGES BANK | 462K | $1M+ | SH |
| TimesSquare Capital Management, LLC | 436K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 431K | $1M+ | SH |
| Walleye Capital LLC | 417K | $1M+ | SH |
| Impax Asset Management Group plc | 413K | $1M+ | SH |
| Artemis Investment Management LLP | 410K | $1M+ | SH |
| AMERICAN CAPITAL MANAGEMENT INC | 335K | $1M+ | SH |
| BNP Paribas Asset Management Holding S.A. | 323K | $1M+ | SH |
| PERCEPTIVE ADVISORS LLC | 316K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 13, 2026
4.8%
2.7M shares
SC 13G · Feb 5, 2026
5.1%
2.9M shares
T. Rowe Price Associates, Inc.
SC 13G/A · Sep 8, 2025
6.1%
3.4M shares
SC 13G/A · Apr 24, 2025
9.3%
5.2M shares
T. Rowe Price Associates, Inc.
SC 13G/A · Feb 14, 2025
12.7%
7.1M shares
SC 13G/A · Feb 13, 2025
4.8%
2.7M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Nov 14, 2024
11.4%
6.4M shares
SC 13G/A · Nov 12, 2024
12.7%
7.1M shares
SC 13G/A · Oct 23, 2024
12.7%
7.1M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Sep 10, 2024
10.9%
6.1M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2024
7.2%
4.0M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.1%
5.1M shares
SC 13G/A · Jan 23, 2024
14.1%
7.9M shares
Roy T. Eddleman Estate Roy T. Eddleman Living Trust
SC 13G/A · Feb 15, 2023
4.9%
0.271 shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2023
9.1%
5.1M shares
SC 13G/A · Jan 23, 2023
11.0%
6.1M shares
SC 13G · Sep 8, 2022
10.2%
5.7M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G · Feb 14, 2022
5.5%
3.0M shares
SC 13G/A · Jan 31, 2022
9.4%
5.2M shares