Walter C. Herlihy serves as Executive at REPLIGEN CORP, where they oversee executive responsibilities. Since joining the company, Walter C. Herlihy has executed 66 insider transactions totaling $11.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Sep 20, 2007 involved exercising options for 156,277 shares valued at $220.4K.
Walter C. Herlihy currently holds 262,430 shares of REPLIGEN CORP (RGEN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Walter C. Herlihy has been a net seller of RGEN stock. They have purchased $0 and sold $11.6M worth of shares.
Walter C. Herlihy's most recent insider trade was on Sep 20, 2007, when they sold 156,277 shares at $1.41 per share.
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| 52,465 |
| $4.20 |
| Discretionary |
| Jul 13, 2007 | RGEN | $343.6K | Option Exercise | 243,723 | $1.41 | Discretionary |
| Jul 13, 2007 | RGEN | $343.6K | Payment | 87,000 | $3.95 | Discretionary |
| Mar 8, 2007 | RGEN | $3.8K | Sale | 1,200 | $3.13 | Discretionary |
| Mar 8, 2007 | RGEN | $40.6K | Sale | 12,736 | $3.19 | Discretionary |
| Mar 8, 2007 | RGEN | $5.3K | Sale | 1,700 | $3.10 | Discretionary |
| Mar 8, 2007 | RGEN | $933 | Sale | 300 | $3.11 | Discretionary |
| Mar 8, 2007 | RGEN | $8.1K | Sale | 2,600 | $3.12 | Discretionary |
| Mar 8, 2007 | RGEN | $2.3K | Sale | 732 | $3.15 | Discretionary |
| Mar 8, 2007 | RGEN | $9.5K | Sale | 3,000 | $3.16 | Discretionary |
| Mar 8, 2007 | RGEN | $1.1K | Sale | 332 | $3.17 | Discretionary |
| Mar 8, 2007 | RGEN | $7.6K | Sale | 2,400 | $3.18 | Discretionary |
| Feb 14, 2007 | RGEN | $75.0K | Option Exercise | 50,000 | $1.50 | Discretionary |
| Mar 6, 2006 | RGEN | $125.0K | Option Exercise | 100,000 | $1.25 | Discretionary |
| Feb 21, 2006 | RGEN | $229.5K | Sale | 54,000 | $4.25 | Discretionary |