Insider Trading activities of Genzyme Corp insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Genzyme Corp since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Genzyme Corp since year 2005. Table 2 shows the detailed insider transactions of Genzyme Corp since 2005. The reporting company's ticker symbol is GENZ. The reporting company's CIK number is 732485.
The total value of stock buying since 2005 is $790,347,625.
The total value of stock sales since 2005 is $163,801,451.
The total value of stock option exercises since 2005 is $69,715,199.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Genzyme Corp (GENZ).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2011-04 69,520,175 $789,301,318 0 $0 298,695 $0
2010-08 0 $0 6,640 $466,792 6,640 $307,033
2010-07 0 $0 95,787 $5,498,510 95,787 $3,698,265
2010-06 0 $0 1,000 $48,810 22,250 $0
2010-05 0 $0 274,684 $13,454,234 399,855 $4,850,083
2010-03 0 $0 19,508 $1,112,346 16,149 $427,948
2010-02 0 $0 100,000 $5,578,000 100,000 $2,650,000
2009-11 0 $0 237,875 $12,064,421 236,875 $6,499,175
2009-09 1,000 $55,000 0 $0 0 $0
2009-06 0 $0 4,309 $259,575 0 $0
2009-05 0 $0 59,894 $3,571,292 95,923 $441,696
2009-04 2,000 $103,906 4,000 $213,384 0 $0
2009-03 700 $38,178 0 $0 0 $0
2009-02 0 $0 6,000 $418,140 0 $0
2009-01 0 $0 232,180 $15,439,970 232,180 $6,835,379
2008-12 1,550 $100,440 55,521 $3,618,303 55,521 $1,634,538
2008-11 0 $0 11,200 $835,408 0 $0
2008-09 0 $0 36,635 $2,811,003 36,635 $1,024,680
2008-08 0 $0 147,793 $11,826,870 147,793 $3,745,903
2008-07 0 $0 34,655 $2,685,863 22,645 $1,220,335
2008-06 0 $0 36,635 $2,637,720 36,635 $1,078,534
2008-05 0 $0 51,000 $3,533,129 51,000 $1,362,390
2008-03 0 $0 19,900 $1,439,167 19,900 $905,489
2008-01 0 $0 206,586 $16,519,379 206,586 $8,086,843
2007-12 0 $0 46,474 $3,478,157 25,140 $811,670
2007-11 0 $0 62,086 $4,560,291 62,086 $2,242,269
2007-10 0 $0 609,702 $45,456,418 609,702 $20,152,505
2007-05 0 $0 0 $0 2,277 $99,960
2007-03 9,605 $579,373 0 $0 0 $0
2006-08 0 $0 11,145 $738,133 14,220 $462,434
2006-07 0 $0 49,000 $3,197,310 16,000 $329,440
2006-05 3,000 $169,410 0 $0 6,831 $299,880
2006-03 0 $0 12,500 $864,000 12,500 $548,750
2005-12 0 $0 9,332 $676,662 0 $0
2005-11 0 $0 231 $17,119 0 $0
2005-07 0 $0 1,118 $80,177 0 $0
2005-06 0 $0 5,000 $310,000 0 $0
2005-05 0 $0 6,226 $390,868 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Genzyme Corp insiders (GENZ)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2011-04-08 Gc Merger Corp. (10% Owner) Buy 20,681,287 38.16 789,301,318
2011-04-07 Gc Merger Corp. (10% Owner) Buy 44,891,208 .00 0
2011-04-06 Gc Merger Corp. (10% Owner) Buy 3,947,680 .00 0
2011-04-04 Ende Eric J (Director) Option Ex 2,375 .00 0
2011-04-04 Burakoff Steven (Director) Option Ex 2,375 .00 0
2011-04-04 Amello Jason (CorpContrllr,ChiefAccntOfficer) Option Ex 5,005 .00 0
2011-04-04 Desrosier Thomas (Sr VP, General Counsel) Option Ex 11,375 .00 0
2011-04-04 Meeker David P (ExecVP,Chief Operating Officer) Option Ex 29,250 .00 0
2011-04-04 Canute Scott A (Executive VP) Option Ex 25,000 .00 0
2011-04-04 Boudreaux Gail (Director) Option Ex 2,375 .00 0
2011-04-04 Bertolini Robert J (Director) Option Ex 2,375 .00 0
2011-04-04 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 14,500 .00 0
2011-04-04 Geraghty James A (Senior Vice President) Option Ex 9,750 .00 0
2011-04-04 Wyzga Michael S (Executive VP and CFO) Option Ex 29,250 .00 0
2011-04-04 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 5,640 .00 0
2011-04-04 Dzau Victor J (Director) Option Ex 6,318 .00 0
2011-04-04 Syron Richard F/ca (Director) Option Ex 2,375 .00 0
2011-04-04 Fenton Dennis M (Director) Option Ex 2,375 .00 0
2011-04-04 Mcgillicudy Cornelius Iii (Director) Option Ex 8,280 .00 0
2011-04-04 Berthiaume Douglas A (Director) Option Ex 11,380 .00 0
2011-04-04 Whitworth Ralph V (Director) Option Ex 2,375 .00 0
2011-04-04 Cooney Charles L (Director) Option Ex 6,352 .00 0
2011-04-04 Carpenter Robert J (Director) Option Ex 2,375 .00 0
2011-04-04 Wirth Peter (Exec VP,Legal & Corporate Dev.) Option Ex 29,250 .00 0
2011-04-04 Termeer Henri A (Chmn, President and CEO) Option Ex 64,768 .00 0
2011-04-04 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 7,815 .00 0
2011-04-04 Moscicki Richard A (Sr VP,Chief Medical Officer) Option Ex 15,762 .00 0
2010-08-31 Amello Jason (Corp Contrllr,ChiefAccntOfficr) Sale 6,640 70.30 466,792
2010-08-31 Amello Jason (Corp Contrllr,ChiefAccntOfficr) Option Ex 6,640 46.24 307,033
2010-07-23 Smith Sandford D (Exe VP,President Int'l Group) Sale 32,041 64.53 2,067,701
2010-07-23 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 32,041 43.88 1,405,959
2010-07-12 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Sale 63,746 53.82 3,430,809
2010-07-12 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 63,746 35.96 2,292,306
2010-06-16 Boudreaux Gail (Director) Option Ex 2,500 .00 0
2010-06-16 Bertolini Robert J (Director) Option Ex 2,375 .00 0
2010-06-16 Dzau Victor J (Director) Option Ex 2,500 .00 0
2010-06-16 Syron Richard F/ca (Director) Option Ex 2,500 .00 0
2010-06-16 Mcgillicudy Cornelius Iii (Director) Option Ex 2,500 .00 0
2010-06-16 Berthiaume Douglas A (Director) Option Ex 2,500 .00 0
2010-06-16 Whitworth Ralph V (Director) Option Ex 2,375 .00 0
2010-06-16 Cooney Charles L (Director) Option Ex 2,500 .00 0
2010-06-16 Carpenter Robert J (Director) Option Ex 2,500 .00 0
2010-06-11 Geraghty James A (Senior Vice President) Sale 1,000 48.81 48,810
2010-05-27 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 1,737 49.54 86,050
2010-05-25 Amello Jason (CorpContrllr,ChiefAccntOfficer) Sale 533 45.62 24,315
2010-05-25 Desrosier Thomas (Sr VP, General Counsel) Sale 1,972 45.60 89,923
2010-05-25 Meeker David P (ExecVP,Chief Operating Officer) Sale 2,732 45.60 124,579
2010-05-25 Smith Sandford D (Exe VP,President Int'l Group) Sale 8,887 45.61 405,336
2010-05-25 Geraghty James A (Senior Vice President) Sale 2,329 45.59 106,179
2010-05-25 Wyzga Michael S (Executive VP and CFO) Sale 5,068 45.63 231,252
2010-05-25 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Sale 2,629 45.61 119,908
2010-05-25 Wirth Peter (Exec VP,Legal & Corporate Dev.) Sale 6,665 45.62 304,057
2010-05-25 Termeer Henri A (Chmn, President and CEO) Sale 39,695 45.61 1,810,488
2010-05-25 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 4,789 45.62 218,498
2010-05-25 Moscicki Richard A (Sr VP,Chief Medical Officer) Sale 2,731 45.63 124,615
2010-05-24 Amello Jason (CorpContrllr,ChiefAccntOfficer) Option Ex 1,575 .00 0
2010-05-24 Desrosier Thomas (Sr VP, General Counsel) Option Ex 5,833 .00 0
2010-05-24 Meeker David P (ExecVP,Chief Operating Officer) Option Ex 8,083 .00 0
2010-05-24 Smith Sandford D (Exe VP,President Int'l Group) Sale 1,525 48.93 74,618
2010-05-24 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 15,000 .00 0
2010-05-24 Geraghty James A (Senior Vice President) Option Ex 5,000 .00 0
2010-05-24 Wyzga Michael S (Executive VP and CFO) Option Ex 15,000 .00 0
2010-05-24 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Sale 593 48.93 29,015
2010-05-24 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 5,833 .00 0
2010-05-24 Wirth Peter (Exec VP,Legal & Corporate Dev.) Option Ex 15,000 .00 0
2010-05-24 Termeer Henri A (Chmn,President and CEO) Sale 8,955 48.93 438,168
2010-05-24 Termeer Henri A (Chmn, President and CEO) Option Ex 67,000 .00 0
2010-05-24 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 8,083 .00 0
2010-05-24 Moscicki Richard A (Sr VP,Chief Medical Officer) Option Ex 8,083 .00 0
2010-05-22 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 5,000 .00 0
2010-05-22 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 1,944 .00 0
2010-05-22 Termeer Henri A (Chmn, President and CEO) Option Ex 22,333 .00 0
2010-05-22 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 2,694 .00 0
2010-05-21 Meeker David P (ExecVP,Chief Operating Officer) Sale 16,488 49.06 808,901
2010-05-21 Meeker David P (ExecVP,Chief Operating Officer) Option Ex 16,488 26.50 436,932
2010-05-21 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 4,750 .00 0
2010-05-21 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 1,847 .00 0
2010-05-21 Termeer Henri A (Chmn,President and CEO) Option Ex 21,216 .00 0
2010-05-21 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 822 48.93 40,220
2010-05-21 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 2,559 .00 0
2010-05-17 Wirth Peter (Exec VP,Legal & Corporate Dev.) Sale 48,216 50.51 2,435,390
2010-05-17 Wirth Peter (Exec VP,Legal & Corporate Dev.) Option Ex 48,216 26.50 1,277,724
2010-05-17 Termeer Henri A (Chmn, President and CEO) Sale 100,000 50.54 5,054,000
2010-05-17 Termeer Henri A (Chmn, President and CEO) Option Ex 100,000 26.50 2,650,000
2010-05-14 Moscicki Richard A (Sr VP,Chief Medical Officer) Sale 18,318 50.70 928,722
2010-05-14 Moscicki Richard A (Sr VP,Chief Medical Officer) Option Ex 18,318 26.50 485,427
2010-03-19 Smith Sandford D (Exe VP,President Int'l Group) Sale 3,359 58.90 197,845
2010-03-04 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 16,149 56.63 914,501
2010-03-04 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 16,149 26.50 427,948
2010-02-22 Termeer Henri A (Chmn, President and CEO) Sale 100,000 55.78 5,578,000
2010-02-22 Termeer Henri A (Chmn, President and CEO) Option Ex 100,000 26.50 2,650,000
2009-11-23 Termeer Henri A (Chmn, President and CEO) Sale 200,000 50.47 10,094,000
2009-11-23 Termeer Henri A (Chmn, President and CEO) Option Ex 200,000 26.50 5,300,000
2009-11-06 Geraghty James A (Senior Vice President) Sale 36,875 52.07 1,920,081
2009-11-06 Geraghty James A (Senior Vice President) Option Ex 36,875 32.52 1,199,175
2009-11-03 Cooney Charles L (Director) Sale 1,000 50.34 50,340
2009-09-10 Dzau Victor J (Director) Buy 1,000 55.00 55,000
2009-06-02 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 1,809 61.40 111,065
2009-06-01 Cooney Charles L (Director) Sale 2,500 59.40 148,510
2009-05-26 Smith Sandford D (Exe VP,President Int'l Group) Sale 1,641 56.54 92,785
2009-05-26 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Sale 638 56.54 36,069
2009-05-26 Collier Earl M Jr (Executive Vice President) Sale 1,641 56.54 92,780
2009-05-26 Termeer Henri A (Chmn, President and CEO) Sale 9,637 56.54 544,847
2009-05-26 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 885 56.54 50,036
2009-05-22 Boudreaux Gail (Director) Option Ex 2,500 .00 0
2009-05-22 Smith Sandford D (Exe VP,President Int'l Group) Option Ex 5,000 .00 0
2009-05-22 Csimma Zoltan A (SrVP,Chief Human Resources Officer) Option Ex 1,944 .00 0
2009-05-22 Collier Earl M Jr (Executive Vice President) Option Ex 5,000 .00 0
2009-05-22 Dzau Victor J (Director) Option Ex 2,500 .00 0
2009-05-22 Syron Richard F/ca (Director) Option Ex 2,500 .00 0
2009-05-22 Mcgillicudy Cornelius Iii (Director) Option Ex 2,500 .00 0
2009-05-22 Berthiaume Douglas A (Director) Option Ex 2,500 .00 0
2009-05-22 Cooney Charles L (Director) Option Ex 2,500 .00 0
2009-05-22 Carpenter Robert J (Director) Sale 1,000 58.70 58,701
2009-05-22 Carpenter Robert J (Director) Option Ex 2,500 .00 0
2009-05-22 Termeer Henri A (Chmn, President and CEO) Option Ex 22,333 .00 0
2009-05-22 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 2,694 .00 0
2009-05-15 Carpenter Robert J (Director) Sale 1,452 59.40 86,244
2009-05-15 Carpenter Robert J (Director) Option Ex 1,452 20.59 29,896
2009-05-14 Carpenter Robert J (Director) Sale 10,000 60.33 603,280
2009-05-14 Carpenter Robert J (Director) Option Ex 10,000 20.59 205,900
2009-05-13 Cooney Charles L (Director) Sale 3,000 60.19 180,570
2009-05-13 Carpenter Robert J (Director) Sale 10,000 60.62 606,240
2009-05-13 Carpenter Robert J (Director) Option Ex 10,000 20.59 205,900
2009-05-12 Carpenter Robert J (Director) Sale 10,000 60.70 606,960
2009-05-12 Carpenter Robert J (Director) Option Ex 10,000 .00 0
2009-05-11 Carpenter Robert J (Director) Sale 10,000 61.28 612,780
2009-05-11 Carpenter Robert J (Director) Option Ex 10,000 .00 0
2009-04-24 Cooney Charles L (Director) Sale 4,000 53.35 213,384
2009-04-23 Meeker David P (ExecVP,Therapeutics,Biosurgery) Buy 2,000 51.95 103,906
2009-03-04 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Buy 700 54.54 38,178
2009-02-23 Cooney Charles L (Director) Sale 6,000 69.69 418,140
2009-01-16 Wirth Peter (Exec VP,Legal & Corporate Dev.) Sale 232,180 66.50 15,439,970
2009-01-16 Wirth Peter (Exec VP,Legal & Corporate Dev.) Option Ex 232,180 29.44 6,835,379
2008-12-10 Dzau Victor J (Director) Buy 1,550 64.80 100,440
2008-12-08 Smith Alan E (Sr VP,Chief Scientific Officer) Sale 55,521 65.17 3,618,303
2008-12-08 Smith Alan E (Sr VP,Chief Scientific Officer) Option Ex 55,521 29.44 1,634,538
2008-11-04 Berthiaume Douglas A (Director) Sale 11,200 74.59 835,408
2008-09-23 Moscicki Richard A (Sr VP,Chief Medical Officer) Sale 36,635 76.73 2,811,003
2008-09-23 Moscicki Richard A (Sr VP,Chief Medical Officer) Option Ex 36,635 27.97 1,024,680
2008-08-15 Meeker David P (President LSD Therapeutics) Sale 17,790 83.19 1,479,950
2008-08-15 Meeker David P (President LSD Therapeutics) Option Ex 17,790 20.59 366,296
2008-08-14 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Sale 19,232 81.71 1,571,446
2008-08-14 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Option Ex 19,232 42.70 821,206
2008-08-14 Smith Alan E (Senior Vice President) Sale 15,000 82.51 1,237,650
2008-08-14 Smith Alan E (Senior Vice President) Option Ex 15,000 32.52 487,800
2008-08-12 Wyzga Michael S (Executive VP and CFO) Sale 29,390 79.00 2,321,810
2008-08-12 Wyzga Michael S (Executive VP and CFO) Option Ex 29,390 35.51 1,043,727
2008-08-07 Desrosier Thomas (Sr VP General Counsel) Sale 21,450 78.99 1,694,334
2008-08-07 Desrosier Thomas (Sr VP General Counsel) Option Ex 21,450 .00 0
2008-08-06 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Sale 6,445 79.00 509,155
2008-08-06 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Option Ex 6,445 32.52 209,591
2008-08-05 Smith Alan E (Senior Vice President) Sale 27,761 78.00 2,165,358
2008-08-05 Smith Alan E (Senior Vice President) Option Ex 27,761 29.44 817,283
2008-07-15 Bamforth Mark R (Sr.VP, Corp. Operations & Phar) Option Ex 6,445 79.00 509,155
2008-07-15 Smith Alan E (Senior Vice President) Sale 18,455 79.70 1,470,863
2008-07-08 Collier Earl M Jr (Executive Vice President) Sale 16,200 75.00 1,215,000
2008-07-08 Collier Earl M Jr (Executive Vice President) Option Ex 16,200 43.90 711,180
2008-06-25 Moscicki Richard A (Senior Vice President) Sale 36,635 72.00 2,637,720
2008-06-25 Moscicki Richard A (Senior Vice President) Option Ex 36,635 29.44 1,078,534
2008-05-21 Berthiaume Douglas A (Director) Sale 24,000 67.71 1,625,039
2008-05-21 Berthiaume Douglas A (Director) Option Ex 24,000 13.78 330,720
2008-05-02 Cooney Charles L (Director) Sale 27,000 70.67 1,908,090
2008-05-02 Cooney Charles L (Director) Option Ex 27,000 38.21 1,031,670
2008-03-03 Mcgillicudy Cornelius Iii (Director) Sale 19,900 72.32 1,439,167
2008-03-03 Mcgillicudy Cornelius Iii (Director) Option Ex 19,900 45.50 905,489
2008-01-17 Moscicki Richard A (Senior Vice President) Sale 45,793 82.00 3,755,026
2008-01-17 Moscicki Richard A (Senior Vice President) Option Ex 45,793 29.44 1,348,145
2008-01-16 Smith Sandford D (Executive Vice President) Sale 20,181 79.70 1,608,425
2008-01-16 Smith Sandford D (Executive Vice President) Option Ex 20,181 49.86 1,006,123
2008-01-16 Collier Earl M Jr (Executive Vice President) Sale 90,000 80.00 7,200,000
2008-01-16 Collier Earl M Jr (Executive Vice President) Option Ex 90,000 46.24 4,161,600
2008-01-11 Smith Sandford D (Executive Vice President) Sale 4,719 79.70 376,104
2008-01-11 Smith Sandford D (Executive Vice President) Option Ex 4,719 46.24 218,206
2008-01-09 Smith Sandford D (Executive Vice President) Sale 100 79.70 7,970
2008-01-09 Smith Sandford D (Executive Vice President) Option Ex 100 46.24 4,624
2008-01-08 Moscicki Richard A (Senior Vice President) Sale 45,793 78.00 3,571,854
2008-01-08 Moscicki Richard A (Senior Vice President) Option Ex 45,793 29.44 1,348,145
2007-12-31 Moscicki Richard A (Senior Vice President) Sale 21,334 74.68 1,593,223
2007-12-17 Wyzga Michael S (Executive VP and CFO) Sale 5,140 74.89 384,934
2007-12-17 Wyzga Michael S (Executive VP and CFO) Option Ex 5,140 43.36 222,870
2007-12-17 Smith Alan E (Senior Vice President) Sale 20,000 75.00 1,500,000
2007-12-17 Smith Alan E (Senior Vice President) Option Ex 20,000 29.44 588,800
2007-11-29 Dzau Victor J (Director) Sale 5,000 75.00 375,000
2007-11-29 Dzau Victor J (Director) Option Ex 5,000 62.98 314,900
2007-11-21 Dzau Victor J (Director) Sale 10,000 72.00 720,000
2007-11-21 Dzau Victor J (Director) Option Ex 10,000 62.98 629,800
2007-11-15 Carpenter Robert J (Director) Sale 18,543 73.05 1,354,566
2007-11-15 Carpenter Robert J (Director) Option Ex 18,543 18.61 345,085
2007-11-13 Dzau Victor J (Director) Sale 10,000 72.00 720,000
2007-11-13 Dzau Victor J (Director) Option Ex 10,000 60.74 607,400
2007-11-02 Carpenter Robert J (Director) Sale 1,219 75.00 91,425
2007-11-02 Carpenter Robert J (Director) Option Ex 1,219 18.61 22,685
2007-11-01 Carpenter Robert J (Director) Sale 17,324 75.00 1,299,300
2007-11-01 Carpenter Robert J (Director) Option Ex 17,324 18.61 322,399
2007-10-30 Gemayel Georges (Executive Vice President) Sale 37,500 76.00 2,850,000
2007-10-30 Gemayel Georges (Executive Vice President) Option Ex 37,500 46.39 1,739,625
2007-10-30 Termeer Henri A (Chmn, President and CEO) Sale 50,723 73.56 3,731,183
2007-10-30 Termeer Henri A (Chmn, President and CEO) Option Ex 50,723 29.44 1,493,285
2007-10-29 Termeer Henri A (Chmn, President and CEO) Sale 158,026 74.20 11,724,897
2007-10-29 Termeer Henri A (Chmn, President and CEO) Option Ex 158,026 29.44 4,652,285
2007-10-26 Termeer Henri A (Chmn, President and CEO) Sale 257,053 75.07 19,296,968
2007-10-26 Termeer Henri A (Chmn, President and CEO) Option Ex 257,053 29.44 7,567,640
2007-10-25 Mcgillicudy Cornelius Iii (Director) Sale 24,000 75.38 1,809,120
2007-10-25 Mcgillicudy Cornelius Iii (Director) Option Ex 24,000 41.44 994,560
2007-10-15 Smith Sandford D (Executive Vice President) Sale 25,000 74.77 1,869,250
2007-10-15 Smith Sandford D (Executive Vice President) Option Ex 25,000 46.24 1,156,000
2007-10-15 Collier Earl M Jr (Executive Vice President) Sale 32,400 75.00 2,430,000
2007-10-15 Collier Earl M Jr (Executive Vice President) Option Ex 32,400 43.90 1,422,360
2007-10-10 Smith Sandford D (Executive Vice President) Sale 25,000 69.80 1,745,000
2007-10-10 Smith Sandford D (Executive Vice President) Option Ex 25,000 45.07 1,126,750
2007-05-31 Gemayel Georges (Executive Vice President) Option Ex 2,277 43.90 99,960
2007-03-12 Moscicki Richard A (Senior Vice President) Buy 9,605 60.32 579,373
2006-08-31 Smith Sandford D (Executive Vice President) Sale 11,145 66.23 738,133
2006-08-31 Smith Sandford D (Executive Vice President) Option Ex 14,220 32.52 462,434
2006-07-27 Cooney Charles L (Director) Sale 16,000 66.78 1,068,480
2006-07-27 Cooney Charles L (Director) Option Ex 16,000 20.59 329,440
2006-07-21 Collier Earl M Jr (Executive Vice President) Sale 22,000 64.51 1,419,220
2006-05-30 Gemayel Georges (Executive Vice President) Option Ex 4,554 43.90 199,920
2006-05-11 Gemayel Georges (Executive Vice President) Buy 3,000 56.47 169,410
2006-03-01 Smith Sandford D (Senior Vice President) Sale 12,500 69.12 864,000
2006-03-01 Smith Sandford D (Senior Vice President) Option Ex 12,500 43.90 548,750
2005-12-16 Moscicki Richard A (Senior Vice Presiden) Sale 4,666 73.01 340,664
2005-12-06 Moscicki Richard A (Senior Vice Presiden) Sale 4,666 72.01 335,998
2005-11-29 Wirth Peter (Executive Vice Presi) Sale 231 74.11 17,119
2005-07-29 Smith Sandford D (Senior Vice Presiden) Sale 1,118 71.72 80,177
2005-07-15 Carpenter Robert J (Director) Sale 0 .00 0
2005-06-13 Carpenter Robert J (Director) Sale 3,940 62.00 244,280
2005-06-07 Carpenter Robert J (Director) Sale 1,060 62.00 65,720
2005-05-17 Blair Henry E (Director) Sale 6,226 62.78 390,868

Insider trading activities including stock purchases, stock sales, and option exercises of GENZ listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Genzyme Corp (symbol GENZ, CIK number 732485) see the Securities and Exchange Commission (SEC) website.