Insider Stock Trading History of Keiser David W


The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Keiser David W since year 2005. The trader's CIK number is 1231953. At the time of this reporting, Keiser David W is the Director of Alexion Pharmaceuticals Inc . (stock ticker symbol ALXN). See this page for all insider trading activities at Alexion Pharmaceuticals Inc .


Stock purchases, sales, and option exercises reported by insider Keiser David W since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2009-06-01 ALXN Alexion Pharmaceuticals Inc Sale 50,000 36.82 1,841,150
2009-06-01 ALXN Alexion Pharmaceuticals Inc Option Ex 40,000 23.56 942,400
2009-05-11 ALXN Alexion Pharmaceuticals Inc Sale 7,800 35.01 273,078
2009-05-07 ALXN Alexion Pharmaceuticals Inc Sale 2,200 35.00 77,000
2009-05-01 ALXN Alexion Pharmaceuticals Inc Sale 40,000 33.08 1,323,400
2009-05-01 ALXN Alexion Pharmaceuticals Inc Option Ex 40,000 15.27 610,800
2009-04-01 ALXN Alexion Pharmaceuticals Inc Sale 58,233 36.30 2,113,916
2009-04-01 ALXN Alexion Pharmaceuticals Inc Option Ex 40,000 11.38 455,200
2009-03-16 ALXN Alexion Pharmaceuticals Inc Sale 3,281 34.25 112,374
2009-03-13 ALXN Alexion Pharmaceuticals Inc Sale 10,000 35.01 350,100
2009-03-10 ALXN Alexion Pharmaceuticals Inc Sale 304 32.34 9,831
2009-03-02 ALXN Alexion Pharmaceuticals Inc Sale 40,000 33.21 1,328,400
2009-03-02 ALXN Alexion Pharmaceuticals Inc Option Ex 40,000 9.78 391,000
2009-02-17 ALXN Alexion Pharmaceuticals Inc Option Ex 40,000 34.28 1,371,320
2009-02-17 ALXN Alexion Pharmaceuticals Inc Sale 55,515 39.46 2,190,621
2009-01-16 ALXN Alexion Pharmaceuticals Inc Sale 2,110 36.90 77,859
2009-01-12 ALXN Alexion Pharmaceuticals Inc Sale 375 34.51 12,941
2008-09-11 ALXN Alexion Pharmaceuticals Inc Sale 319 40.12 12,798
2008-09-11 ALXN Alexion Pharmaceuticals Inc Sale 319 40.36 12,874
2008-07-30 ALXN Alexion Pharmaceuticals Inc Option Ex 10,000 21.00 210,000
2008-07-30 ALXN Alexion Pharmaceuticals Inc Sale 10,000 90.00 900,000
2008-07-25 ALXN Alexion Pharmaceuticals Inc Option Ex 20,000 19.94 398,840
2008-07-25 ALXN Alexion Pharmaceuticals Inc Sale 20,000 80.00 1,600,000
2008-07-10 ALXN Alexion Pharmaceuticals Inc Sale 159 75.75 12,044
2008-07-01 ALXN Alexion Pharmaceuticals Inc Option Ex 20,000 17.15 342,920
2008-07-01 ALXN Alexion Pharmaceuticals Inc Sale 20,000 71.87 1,437,400
2008-05-01 ALXN Alexion Pharmaceuticals Inc Sale 50,000 70.06 3,502,850
2008-03-10 ALXN Alexion Pharmaceuticals Inc Sale 159 56.05 8,911
2008-01-10 ALXN Alexion Pharmaceuticals Inc Sale 709 69.02 48,935
2007-12-13 ALXN Alexion Pharmaceuticals Inc Sale 12,500 75.04 937,937
2007-12-13 ALXN Alexion Pharmaceuticals Inc Option Ex 12,500 9.00 112,500
2007-11-01 ALXN Alexion Pharmaceuticals Inc Option Ex 12,500 9.00 112,500
2007-11-01 ALXN Alexion Pharmaceuticals Inc Sale 12,500 76.32 953,999
2007-09-10 ALXN Alexion Pharmaceuticals Inc Sale 209 65.22 13,632
2007-07-30 ALXN Alexion Pharmaceuticals Inc Option Ex 4,250 10.50 44,625
2007-07-30 ALXN Alexion Pharmaceuticals Inc Sale 4,250 58.77 249,785
2007-05-08 ALXN Alexion Pharmaceuticals Inc Option Ex 9,375 10.50 98,437
2007-05-08 ALXN Alexion Pharmaceuticals Inc Sale 9,375 47.00 440,625
2007-01-03 ALXN Alexion Pharmaceuticals Inc Option Ex 9,375 10.50 98,437
2007-01-03 ALXN Alexion Pharmaceuticals Inc Sale 9,375 40.58 380,465
2006-11-22 ALXN Alexion Pharmaceuticals Inc Option Ex 2,000 10.50 21,000
2006-03-10 ALXN Alexion Pharmaceuticals Inc Option Ex 3,005 10.00 30,050
2006-03-10 ALXN Alexion Pharmaceuticals Inc Sale 3,005 38.35 115,241
2006-02-01 ALXN Alexion Pharmaceuticals Inc Option Ex 20,000 10.00 200,000
2006-02-01 ALXN Alexion Pharmaceuticals Inc Sale 20,000 30.19 603,820

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Keiser David W (Director of Alexion Pharmaceuticals Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.