Karen A. Dawes sold Repligen Corp (RGEN) shares once on the open market in the last year, totaling $44,275, with the most recent sale on December 17, 2025. She made no open market purchases. Her sales rank 10,516th among 11,678 individual insiders, well below the average of $8.6 million across about 6.4 transactions.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 17, 2025 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | S | Common Stock | 275 | $161.00 | 91,821.0000 | 56,290,749 | 0.30% | 0.00% |
| June 10, 2025 | Barinthus Biotherapeutics plc. | $BRNS | DAWES KAREN A | Director | A | Share Option (Right to Buy) | 20174 | $0.00 | 20,174.0000 | 40,339,395 | 9999.99% | 0.05% |
| May 15, 2025 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | A | Common Stock | 973 | $0.00 | 92,096.0000 | 56,148,556 | 1.07% | 0.00% |
| May 15, 2025 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | A | Stock Option (Right to Buy) | 1800 | $0.00 | 1,800.0000 | 56,148,556 | 9999.99% | 0.00% |
| June 14, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | M | Common Stock | 2953 | $67.71 | 88,170.0000 | 0 | 3.47% | 0.00% |
| June 14, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | M | Stock Option (Right to Buy) | 2953 | $0.00 | 0.0000 | 0 | 0.00% | 0.00% |
| May 16, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | A | Common Stock | 803 | $0.00 | 88,170.0000 | 0 | 0.92% | 0.00% |
| May 16, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | A | Stock Option (Right to Buy) | 1576 | $0.00 | 1,576.0000 | 0 | 9999.99% | 0.00% |
| May 10, 2024 | Barinthus Biotherapeutics plc. | $BRNS | DAWES KAREN A | Director | A | Share Option (Right to Buy) | 19516 | $0.00 | 19,516.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | M | Stock Option (Right to Buy) | 4626 | $0.00 | 0.0000 | 0 | 0.00% | 0.00% |
| Feb. 27, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | S | Common Stock | 1000 | $193.35 | 87,367.0000 | 0 | 1.13% | 0.00% |
| Feb. 27, 2024 | REPLIGEN CORP | $RGEN | DAWES KAREN A | Not found | M | Common Stock | 4626 | $42.07 | 88,367.0000 | 0 | 5.52% | 0.00% |