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 Mar 23, 2007 involved selling 724 shares valued at $3.4K.
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 Mar 23, 2007, when they sold 724 shares at $4.76 per share.
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| $4.71 |
| Discretionary |
| Mar 23, 2007 | IMGN | $552.4K | Sale | 117,531 | $4.70 | Discretionary |
| Mar 23, 2007 | IMGN | $93.3K | Option Exercise | 23,868 | $3.91 | Discretionary |
| Mar 23, 2007 | IMGN | $433.2K | Option Exercise | 109,683 | $3.95 | Discretionary |
| Mar 23, 2007 | IMGN | $1.4K | Sale | 300 | $4.78 | Discretionary |
| Mar 23, 2007 | IMGN | $4.8K | Sale | 1,000 | $4.85 | Discretionary |
| Mar 23, 2007 | IMGN | $481 | Sale | 100 | $4.81 | Discretionary |
| Mar 23, 2007 | IMGN | $52.5K | Sale | 10,945 | $4.80 | Discretionary |
| Mar 23, 2007 | IMGN | $116.7K | Option Exercise | 138,949 | $0.84 | Discretionary |
| Mar 23, 2007 | IMGN | $2.5K | Sale | 523 | $4.77 | Discretionary |
| Mar 23, 2007 | IMGN | $157.3K | Sale | 33,336 | $4.72 | Discretionary |
| Mar 23, 2007 | IMGN | $433.2K | Option Exercise | 109,683 | $3.95 | Discretionary |
| Mar 23, 2007 | IMGN | $116.7K | Option Exercise | 138,949 | $0.84 | Discretionary |
| Mar 23, 2007 | IMGN | $93.3K | Option Exercise | 23,868 | $3.91 | Discretionary |
| Mar 23, 2007 | IMGN | $4.8K | Sale | 1,000 | $4.85 | Discretionary |
| Mar 23, 2007 | IMGN | $481 | Sale | 100 | $4.81 | Discretionary |
| Mar 23, 2007 | IMGN | $52.5K | Sale | 10,945 | $4.80 | Discretionary |
| Mar 23, 2007 | IMGN | $1.4K | Sale | 300 | $4.78 | Discretionary |
| Mar 23, 2007 | IMGN | $2.5K | Sale | 523 | $4.77 | Discretionary |
| Mar 23, 2007 | IMGN | $3.4K | Sale | 724 | $4.76 | Discretionary |
| Mar 23, 2007 | IMGN | $433.9K | Sale | 91,356 | $4.75 | Discretionary |
| Mar 23, 2007 | IMGN | $19.9K | Sale | 4,200 | $4.74 | Discretionary |
| Mar 23, 2007 | IMGN | $22.1K | Sale | 4,656 | $4.74 | Discretionary |
| Mar 23, 2007 | IMGN | $9.1K | Sale | 1,929 | $4.73 | Discretionary |
| Mar 23, 2007 | IMGN | $552.4K | Sale | 117,531 | $4.70 | Discretionary |
| Mar 23, 2007 | IMGN | $27.8K | Sale | 5,900 | $4.71 | Discretionary |
| Mar 22, 2007 | IMGN | $21.1K | Sale | 4,532 | $4.66 | Discretionary |
| Mar 22, 2007 | IMGN | $18.0K | Option Exercise | 21,468 | $0.84 | Discretionary |
| Mar 22, 2007 | IMGN | $100.0K | Sale | 21,468 | $4.66 | Discretionary |