Walter Blattler serves as Executive at IMMUNOGEN INC, where they oversee executive responsibilities. Since joining the company, Walter Blattler has executed 137 insider transactions totaling $4.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Apr 13, 2007 involved selling 1,900 shares valued at $11.4K.
Walter Blattler currently holds 168,233 shares of IMMUNOGEN INC (IMGN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Walter Blattler has been a net seller of IMGN stock. They have purchased $0 and sold $4.9M worth of shares.
Walter Blattler's most recent insider trade was on Apr 13, 2007, when they sold 1,900 shares at $6.01 per share.
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| $6.00 |
| Discretionary |
| Apr 13, 2007 | IMGN | $10.8K | Sale | 1,800 | $5.98 | Discretionary |
| Apr 13, 2007 | IMGN | $12.5K | Sale | 2,100 | $5.97 | Discretionary |
| Apr 13, 2007 | IMGN | $1.2K | Sale | 200 | $5.96 | Discretionary |
| Apr 13, 2007 | IMGN | $10.7K | Sale | 1,800 | $5.95 | Discretionary |
| Apr 13, 2007 | IMGN | $13.1K | Sale | 2,200 | $5.94 | Discretionary |
| Mar 27, 2007 | IMGN | $168.8K | Option Exercise | 75,000 | $2.25 | Discretionary |
| Mar 27, 2007 | IMGN | $85.8K | Option Exercise | 65,468 | $1.31 | Discretionary |
| Mar 27, 2007 | IMGN | $100.0K | Option Exercise | 25,317 | $3.95 | Discretionary |
| Mar 27, 2007 | IMGN | $100.0K | Option Exercise | 25,575 | $3.91 | Discretionary |
| Mar 27, 2007 | IMGN | $168.8K | Option Exercise | 75,000 | $2.25 | Discretionary |
| Mar 27, 2007 | IMGN | $100.0K | Option Exercise | 25,575 | $3.91 | Discretionary |
| Mar 27, 2007 | IMGN | $100.0K | Option Exercise | 25,317 | $3.95 | Discretionary |
| Mar 27, 2007 | IMGN | $85.8K | Option Exercise | 65,468 | $1.31 | Discretionary |
| Mar 26, 2007 | IMGN | $139.0K | Option Exercise | 35,557 | $3.91 | Discretionary |
| Mar 26, 2007 | IMGN | $69.1K | Option Exercise | 21,667 | $3.19 | Discretionary |
| Mar 26, 2007 | IMGN | $184.8K | Sale | 40,609 | $4.55 | Discretionary |
| Mar 26, 2007 | IMGN | $20.1K | Sale | 4,400 | $4.56 | Discretionary |
| Mar 26, 2007 | IMGN | $16.8K | Sale | 3,686 | $4.57 | Discretionary |
| Mar 26, 2007 | IMGN | $4.1K | Sale | 900 | $4.58 | Discretionary |
| Mar 26, 2007 | IMGN | $6.5K | Sale | 1,400 | $4.65 | Discretionary |
| Mar 26, 2007 | IMGN | $2.8K | Sale | 600 | $4.66 | Discretionary |
| Mar 26, 2007 | IMGN | $3.3K | Sale | 700 | $4.67 | Discretionary |
| Mar 26, 2007 | IMGN | $8.9K | Sale | 1,900 | $4.70 | Discretionary |
| Mar 26, 2007 | IMGN | $4.8K | Sale | 1,000 | $4.75 | Discretionary |
| Mar 26, 2007 | IMGN | $2.4K | Sale | 500 | $4.71 | Discretionary |
| Mar 26, 2007 | IMGN | $4.8K | Sale | 1,000 | $4.76 | Discretionary |
| Mar 26, 2007 | IMGN | $1.9K | Sale | 400 | $4.77 | Discretionary |
| Mar 26, 2007 | IMGN | $617 | Sale | 129 | $4.78 | Discretionary |