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 Jul 25, 2008 involved selling 20,000 shares valued at $1.6M.
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 Jul 25, 2008, when they sold 20,000 shares at $80.00 per share.
Get notified when new Form 4 filings are submitted
| $20.72 |
| Discretionary |
| Jul 25, 2008 | ALXN | $112.1K | Option Exercise | 5,500 | $20.38 | Discretionary |
| Jul 25, 2008 | ALXN | $20.9K | Option Exercise | 1,184 | $17.67 | Discretionary |
| Jul 25, 2008 | ALXN | $187.8K | Option Exercise | 8,941 | $21.00 | Discretionary |
| Jul 10, 2008 | ALXN | $12.0K | Sale | 159 | $75.75 | Discretionary |
| Jul 1, 2008 | ALXN | $1.4M | Sale | 20,000 | $71.87 | Discretionary |
| Jul 1, 2008 | ALXN | $54.0K | Option Exercise | 3,056 | $17.67 | Discretionary |
| Jul 1, 2008 | ALXN | $137.1K | Option Exercise | 7,760 | $17.67 | Discretionary |
| Jul 1, 2008 | ALXN | $147.9K | Option Exercise | 9,184 | $16.10 | Discretionary |
| May 1, 2008 | ALXN | $7.0K | Sale | 100 | $70.08 | Discretionary |
| May 1, 2008 | ALXN | $14.0K | Sale | 200 | $70.08 | Discretionary |
| May 1, 2008 | ALXN | $49.4K | Sale | 705 | $70.07 | Discretionary |
| May 1, 2008 | ALXN | $21.2K | Sale | 303 | $70.05 | Discretionary |
| May 1, 2008 | ALXN | $96.1K | Sale | 1,372 | $70.04 | Discretionary |
| May 1, 2008 | ALXN | $7.0K | Sale | 100 | $70.04 | Discretionary |
| May 1, 2008 | ALXN | $126.1K | Sale | 1,800 | $70.04 | Discretionary |
| May 1, 2008 | ALXN | $56.0K | Sale | 800 | $70.03 | Discretionary |
| May 1, 2008 | ALXN | $49.0K | Sale | 700 | $70.03 | Discretionary |
| May 1, 2008 | ALXN | $7.0K | Sale | 100 | $70.03 | Discretionary |
| May 1, 2008 | ALXN | $98.0K | Sale | 1,400 | $70.02 | Discretionary |
| May 1, 2008 | ALXN | $189.1K | Sale | 2,700 | $70.02 | Discretionary |
| May 1, 2008 | ALXN | $378.5K | Sale | 5,406 | $70.01 | Discretionary |
| May 1, 2008 | ALXN | $161.0K | Sale | 2,300 | $70.01 | Discretionary |
| May 1, 2008 | ALXN | $2.0M | Sale | 28,414 | $70.00 | Discretionary |
| May 1, 2008 | ALXN | $8.1K | Award | 500 | $16.10 | Discretionary |
| May 1, 2008 | ALXN | $89.9K | Award | 7,501 | $11.99 | Discretionary |
| May 1, 2008 | ALXN | $89.9K | Award | 7,499 | $11.99 | Discretionary |
| May 1, 2008 | ALXN | $72.5K | Award | 6,750 | $10.74 | Discretionary |
| May 1, 2008 | ALXN | $56.4K | Award | 5,250 | $10.74 | Discretionary |