David W. Keiser serves as Executive at ALEXION PHARMACEUTICALS INC, where they oversee executive responsibilities. Since joining the company, David W. Keiser has executed 148 insider transactions totaling $20.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 1, 2007 involved selling 200 shares valued at $15.3K.
David W. Keiser currently holds 166,796 shares of ALEXION PHARMACEUTICALS INC (ALXN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David W. Keiser has been a net seller of ALXN stock. They have purchased $0 and sold $20.9M worth of shares.
David W. Keiser's most recent insider trade was on Nov 1, 2007, when they sold 200 shares at $76.44 per share.
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| $76.45 |
| Discretionary |
| Nov 1, 2007 | ALXN | $19.1K | Sale | 250 | $76.46 | Discretionary |
| Nov 1, 2007 | ALXN | $18.9K | Sale | 247 | $76.40 | Discretionary |
| Nov 1, 2007 | ALXN | $144.1K | Sale | 1,888 | $76.32 | Discretionary |
| Nov 1, 2007 | ALXN | $36.9K | Sale | 484 | $76.31 | Discretionary |
| Nov 1, 2007 | ALXN | $15.3K | Sale | 200 | $76.30 | Discretionary |
| Nov 1, 2007 | ALXN | $129.9K | Sale | 1,700 | $76.43 | Discretionary |
| Nov 1, 2007 | ALXN | $7.6K | Sale | 100 | $76.28 | Discretionary |
| Nov 1, 2007 | ALXN | $15.2K | Sale | 200 | $76.18 | Discretionary |
| Nov 1, 2007 | ALXN | $22.8K | Sale | 300 | $76.16 | Discretionary |
| Sep 10, 2007 | ALXN | $587 | Sale | 9 | $65.27 | Discretionary |
| Sep 10, 2007 | ALXN | $13.0K | Sale | 200 | $65.18 | Discretionary |
| Jul 30, 2007 | ALXN | $76.4K | Sale | 1,300 | $58.76 | Discretionary |
| Jul 30, 2007 | ALXN | $108.6K | Sale | 1,850 | $58.70 | Discretionary |
| Jul 30, 2007 | ALXN | $44.6K | Option Exercise | 4,250 | $10.50 | Discretionary |
| Jul 30, 2007 | ALXN | $11.8K | Sale | 200 | $58.75 | Discretionary |
| Jul 30, 2007 | ALXN | $5.9K | Sale | 100 | $58.83 | Discretionary |
| Jul 30, 2007 | ALXN | $11.8K | Sale | 200 | $58.77 | Discretionary |
| Jul 30, 2007 | ALXN | $5.9K | Sale | 100 | $58.78 | Discretionary |
| Jul 30, 2007 | ALXN | $23.5K | Sale | 400 | $58.79 | Discretionary |
| Jul 30, 2007 | ALXN | $5.9K | Sale | 100 | $58.81 | Discretionary |
| May 8, 2007 | ALXN | $440.6K | Sale | 9,375 | $47.00 | Discretionary |
| May 8, 2007 | ALXN | $98.4K | Option Exercise | 9,375 | $10.50 | Discretionary |
| Jan 15, 2007 | ALXN | $0 | Award | 7,000 | $N/A | Discretionary |
| Jan 3, 2007 | ALXN | $16.2K | Sale | 400 | $40.61 | Discretionary |
| Jan 3, 2007 | ALXN | $8.1K | Sale | 200 | $40.63 | Discretionary |
| Jan 3, 2007 | ALXN | $8.1K | Sale | 200 | $40.64 | Discretionary |
| Jan 3, 2007 | ALXN | $16.3K | Sale | 400 | $40.70 | Discretionary |
| Jan 3, 2007 | ALXN | $8.1K | Sale | 200 | $40.51 | Discretionary |