| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 09, 2012 | Option/RSU Exercise | - | 1,826 | - | 1,826 | Feb 14, 2012, 03:57 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 09, 2012 | Tax Payment (Shares) | $117.78 | 1,504 | 177,141 | 12,776 | Feb 13, 2012, 04:28 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 09, 2012 | Option/RSU Exercise | - | 4,692 | - | 14,280 | Feb 13, 2012, 04:28 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Vice President, Finance | Feb 09, 2012 | Tax Payment (Shares) | $117.78 | 301 | 35,452 | 5,610 | Feb 13, 2012, 04:27 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Vice President, Finance | Feb 09, 2012 | Option/RSU Exercise | - | 861 | - | 5,911 | Feb 13, 2012, 04:27 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 09, 2012 | Tax Payment (Shares) | $117.78 | 1,257 | 148,049 | 19,619 | Feb 13, 2012, 04:26 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 09, 2012 | Option/RSU Exercise | - | 3,911 | - | 20,876 | Feb 13, 2012, 04:26 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 10, 2012 | Option/RSU Exercise | - | 18,833 | - | 73,290 | Feb 13, 2012, 04:24 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 10, 2012 | Tax Payment (Shares) | $118.14 | 7,007 | 827,807 | 66,283 | Feb 13, 2012, 04:24 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 09, 2012 | Tax Payment (Shares) | $117.78 | 1,957 | 230,495 | 23,903 | Feb 13, 2012, 04:21 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 09, 2012 | Option/RSU Exercise | - | 4,692 | - | 25,860 | Feb 13, 2012, 04:21 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 06, 2012 | Sale | $121.03 | 3,110 | 376,403 | 0 | Feb 08, 2012, 03:07 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 01, 2012 | Option/RSU Exercise | $52.95 | 21,400 | 1,133,088 | 42,568 | Feb 03, 2012, 02:56 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 01, 2012 | Sale | $120.00 | 21,400 | 2,568,000 | 29,568 | Feb 03, 2012, 02:56 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 01, 2012 | Tax Payment (Shares) | $121.26 | 1,656 | 200,807 | 3,906 | Feb 03, 2012, 02:55 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 01, 2012 | Option/RSU Exercise | - | 5,159 | - | 5,562 | Feb 03, 2012, 02:55 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corp Devel and Strategy | Feb 01, 2012 | Tax Payment (Shares) | $121.26 | 1,658 | 201,049 | 3,501 | Feb 03, 2012, 02:54 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corp Devel and Strategy | Feb 01, 2012 | Option/RSU Exercise | - | 5,159 | - | 5,159 | Feb 03, 2012, 02:54 PM |
| BIIB | | BIOGEN IDEC INC. | Granata Frances co | EVP Global Commercial Operatio | Feb 01, 2012 | Option/RSU Exercise | - | 5,198 | - | 5,198 | Feb 03, 2012, 02:53 PM |
| BIIB | | BIOGEN IDEC INC. | Granata Frances co | EVP Global Commercial Operatio | Feb 01, 2012 | Tax Payment (Shares) | $121.26 | 1,669 | 202,383 | 3,529 | Feb 03, 2012, 02:53 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 01, 2012 | Tax Payment (Shares) | $121.26 | 1,477 | 179,101 | 3,110 | Feb 03, 2012, 02:52 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 01, 2012 | Option/RSU Exercise | - | 4,587 | - | 4,587 | Feb 03, 2012, 02:52 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Feb 01, 2012 | Option/RSU Exercise | $59.17 | 5,700 | 337,269 | 12,035 | Feb 03, 2012, 02:51 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Feb 01, 2012 | Sale | $120.00 | 5,700 | 684,000 | 6,335 | Feb 03, 2012, 02:51 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 20, 2012 | Option/RSU Exercise | $55.97 | 3,000 | 167,910 | 9,335 | Jan 24, 2012, 03:55 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 20, 2012 | Sale | $118.00 | 3,000 | 354,000 | 6,335 | Jan 24, 2012, 03:55 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 06, 2012 | Option/RSU Exercise | $55.97 | 3,000 | 167,910 | 9,335 | Jan 09, 2012, 03:54 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 06, 2012 | Sale | $116.00 | 3,000 | 348,000 | 6,335 | Jan 09, 2012, 03:54 PM |
| BIIB | | BIOGEN IDEC INC. | Eric K. Rowinsky | Director | Jan 06, 2012 | Option/RSU Exercise | $59.82 | 12,992 | 777,181 | 20,802 | Jan 09, 2012, 03:52 PM |
| BIIB | | BIOGEN IDEC INC. | Eric K. Rowinsky | Director | Jan 06, 2012 | Sale | $116.00 | 12,992 | 1,507,072 | 9,135 | Jan 09, 2012, 03:52 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 03, 2012 | Option/RSU Exercise | $55.97 | 4,000 | 223,880 | 10,335 | Jan 04, 2012, 01:27 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jan 03, 2012 | Sale | $114.00 | 4,000 | 456,000 | 6,335 | Jan 04, 2012, 01:27 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Jan 03, 2012 | Sale | $112.35 | 20,244 | 2,274,398 | 26,742 | Jan 04, 2012, 01:24 PM |
| BIIB | | BIOGEN IDEC INC. | Stephen A. Sherwin | Director | Dec 19, 2011 | Sale | $110.88 | 2,500 | 277,200 | 6,635 | Dec 20, 2011, 03:10 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Dec 06, 2011 | Sale | $112.31 | 795 | 89,286 | 5,050 | Dec 08, 2011, 02:05 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Dec 01, 2011 | Tax Payment (Shares) | $116.48 | 371 | 43,214 | 5,845 | Dec 02, 2011, 02:10 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Nov 09, 2011 | Sale | $112.04 | 796 | 89,184 | 6,216 | Nov 14, 2011, 11:26 AM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Nov 02, 2011 | Tax Payment (Shares) | $113.43 | 371 | 42,083 | 7,012 | Nov 04, 2011, 11:50 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Nov 01, 2011 | Option/RSU Exercise | $72.87 | 2,175 | 158,492 | 11,763 | Nov 03, 2011, 10:52 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Nov 01, 2011 | Sale | $114.37 | 2,175 | 248,755 | 9,588 | Nov 03, 2011, 10:52 AM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Oct 05, 2011 | Sale | $97.66 | 252 | 24,610 | 7,383 | Oct 07, 2011, 01:48 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Oct 01, 2011 | Tax Payment (Shares) | $93.15 | 118 | 10,992 | 7,635 | Oct 04, 2011, 06:28 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Oct 03, 2011 | Option/RSU Exercise | $49.59 | 778 | 38,581 | 8,413 | Oct 04, 2011, 06:28 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Oct 03, 2011 | Sale | $92.55 | 778 | 72,004 | 7,635 | Oct 04, 2011, 06:28 PM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Sep 27, 2011 | Option/RSU Exercise | $51.38 | 33,250 | 1,708,441 | 60,109 | Sep 29, 2011, 01:01 PM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Sep 27, 2011 | Sale | $96.14 | 33,250 | 3,196,655 | 26,859 | Sep 29, 2011, 01:01 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Sep 16, 2011 | Sale | $100.00 | 3,085 | 308,500 | 6,335 | Sep 19, 2011, 05:18 PM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Sep 01, 2011 | Option/RSU Exercise | $46.68 | 35,000 | 1,633,775 | 61,859 | Sep 02, 2011, 12:45 PM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Sep 01, 2011 | Sale | $95.00 | 35,000 | 3,325,000 | 26,859 | Sep 02, 2011, 12:45 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Aug 29, 2011 | Option/RSU Exercise | $71.38 | 15,000 | 1,070,700 | 27,630 | Aug 31, 2011, 11:44 AM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Aug 29, 2011 | Sale | $92.53 | 15,000 | 1,387,894 | 12,630 | Aug 31, 2011, 11:44 AM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Aug 29, 2011 | Option/RSU Exercise | $68.15 | 10,000 | 681,500 | 36,859 | Aug 31, 2011, 11:42 AM |
| BIIB | | BIOGEN IDEC INC. | William Young | Director | Aug 29, 2011 | Sale | $92.58 | 10,000 | 925,784 | 26,859 | Aug 31, 2011, 11:42 AM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Aug 02, 2011 | Sale | $102.04 | 1,165 | 118,877 | 16,965 | Aug 03, 2011, 11:24 AM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Aug 01, 2011 | Tax Payment (Shares) | $102.90 | 835 | 85,922 | 18,130 | Aug 03, 2011, 11:24 AM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Aug 01, 2011 | Tax Payment (Shares) | $102.90 | 835 | 85,922 | 41,412 | Aug 03, 2011, 11:23 AM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 20, 2011 | Sale | $106.51 | 12,347 | 1,315,035 | 64,164 | Jul 21, 2011, 02:30 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 15, 2011 | Tax Payment (Shares) | $104.00 | 8,911 | 926,744 | 66,804 | Jul 19, 2011, 04:29 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 15, 2011 | Option/RSU Exercise | - | 21,341 | - | 75,715 | Jul 19, 2011, 04:29 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 14, 2011 | Tax Payment (Shares) | $104.00 | 8,791 | 914,264 | 54,374 | Jul 19, 2011, 04:29 PM |
| BIIB | | BIOGEN IDEC INC. | Granata Frances co | EVP Global Commercial Operatio | Jul 01, 2011 | Sale | $107.52 | 2,901 | 311,918 | 0 | Jul 01, 2011, 01:51 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | Jun 14, 2011 | Sale | $92.62 | 2,300 | 213,022 | 9,420 | Jun 14, 2011, 05:20 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | May 25, 2011 | Option/RSU Exercise | $67.25 | 25,975 | 1,746,844 | 35,705 | May 27, 2011, 03:15 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | May 25, 2011 | Sale | $94.09 | 25,975 | 2,444,027 | 22,900 | May 27, 2011, 03:15 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | May 26, 2011 | Option/RSU Exercise | $55.51 | 33,175 | 1,841,628 | 41,995 | May 27, 2011, 03:13 PM |
| BIIB | | BIOGEN IDEC INC. | Nancy Leaming | Director | May 26, 2011 | Sale | $93.05 | 33,175 | 3,087,085 | 13,451 | May 27, 2011, 03:13 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | May 26, 2011 | Option/RSU Exercise | $56.88 | 15,000 | 853,200 | 29,080 | May 27, 2011, 03:11 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | May 26, 2011 | Sale | $93.11 | 15,000 | 1,396,647 | 16,280 | May 27, 2011, 03:11 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | May 06, 2011 | Sale | $96.13 | 967 | 92,960 | 7,753 | May 09, 2011, 04:38 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | May 03, 2011 | Tax Payment (Shares) | $97.99 | 450 | 44,095 | 8,935 | May 04, 2011, 02:53 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | May 04, 2011 | Sale | $96.03 | 215 | 20,646 | 8,720 | May 04, 2011, 02:53 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | May 03, 2011 | Tax Payment (Shares) | $97.99 | 765 | 74,962 | 9,588 | May 04, 2011, 02:51 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | May 01, 2011 | Tax Payment (Shares) | $97.65 | 101 | 9,863 | 9,385 | May 03, 2011, 01:03 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | May 02, 2011 | Sale | $97.20 | 20,993 | 2,040,497 | 35,834 | May 03, 2011, 01:01 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Apr 28, 2011 | Option/RSU Exercise | $41.18 | 14,766 | 608,119 | 57,202 | Apr 29, 2011, 03:03 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Apr 28, 2011 | Sale | $98.91 | 19,716 | 1,950,088 | 48,497 | Apr 29, 2011, 03:03 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 21, 2011 | Sale | $100.00 | 4,350 | 435,000 | 10,353 | Apr 25, 2011, 02:02 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 21, 2011 | Option/RSU Exercise | $72.87 | 4,350 | 316,985 | 14,703 | Apr 25, 2011, 02:02 PM |
| BIIB | | BIOGEN IDEC INC. | Lynn Schenk | Director | Apr 20, 2011 | Option/RSU Exercise | $61.84 | 37,275 | 2,304,947 | 35,255 | Apr 21, 2011, 04:41 PM |
| BIIB | | BIOGEN IDEC INC. | Lynn Schenk | Director | Apr 20, 2011 | Sale | $85.22 | 37,275 | 3,176,461 | 7,980 | Apr 21, 2011, 04:41 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 13, 2011 | Option/RSU Exercise | $56.73 | 36,234 | 2,055,646 | 46,587 | Apr 15, 2011, 11:50 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 13, 2011 | Sale | $80.00 | 36,234 | 2,898,720 | 10,353 | Apr 15, 2011, 11:50 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 11, 2011 | Option/RSU Exercise | $47.92 | 6,900 | 330,648 | 17,253 | Apr 13, 2011, 10:14 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Apr 11, 2011 | Sale | $78.00 | 6,900 | 538,200 | 10,353 | Apr 13, 2011, 10:14 AM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Mar 05, 2011 | Tax Payment (Shares) | $71.15 | 25,888 | 1,841,931 | 47,197 | Apr 08, 2011, 10:38 AM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Mar 05, 2011 | Option/RSU Exercise | $58.99 | 28,750 | 1,695,963 | 73,085 | Apr 08, 2011, 10:38 AM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Mar 31, 2011 | Sale | $73.00 | 2,840 | 207,320 | 9,818 | Apr 01, 2011, 03:20 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Mar 31, 2011 | Option/RSU Exercise | $43.50 | 2,840 | 123,540 | 12,658 | Apr 01, 2011, 03:20 PM |
| BIIB | | BIOGEN IDEC INC. | Craig Eric Schneier | EVP, HR, Public Affairs & Comm | Mar 01, 2011 | Option/RSU Exercise | $49.65 | 6,250 | 310,313 | 23,962 | Mar 03, 2011, 03:17 PM |
| BIIB | | BIOGEN IDEC INC. | Craig Eric Schneier | EVP, HR, Public Affairs & Comm | Mar 01, 2011 | Sale | $68.62 | 6,250 | 428,875 | 17,712 | Mar 03, 2011, 03:17 PM |
| BIIB | | BIOGEN IDEC INC. | Craig Eric Schneier | EVP, HR, Public Affairs & Comm | Mar 02, 2011 | Sale | $70.10 | 7,511 | 526,552 | 13,633 | Mar 03, 2011, 03:17 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Mar 02, 2011 | Sale | $70.10 | 4,041 | 283,259 | 12,401 | Mar 03, 2011, 03:10 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Mar 02, 2011 | Sale | $70.02 | 1,402 | 98,164 | 10,788 | Mar 03, 2011, 03:08 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 24, 2011 | Tax Payment (Shares) | $67.26 | 1,980 | 133,175 | 40,953 | Feb 28, 2011, 03:41 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 24, 2011 | Tax Payment (Shares) | $67.26 | 2,164 | 145,551 | 45,401 | Feb 28, 2011, 03:39 PM |
| BIIB | | BIOGEN IDEC INC. | Robert E. Gagnon | Chief Acct Officer VP & Contr | Feb 24, 2011 | Tax Payment (Shares) | $67.26 | 335 | 22,532 | 11,056 | Feb 28, 2011, 03:36 PM |
| BIIB | | BIOGEN IDEC INC. | Craig Eric Schneier | EVP, HR, Public Affairs & Comm | Feb 24, 2011 | Tax Payment (Shares) | $67.26 | 2,156 | 145,013 | 18,707 | Feb 28, 2011, 03:34 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 24, 2011 | Tax Payment (Shares) | $67.26 | 1,202 | 80,847 | 14,463 | Feb 28, 2011, 03:32 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2011 | Tax Payment (Shares) | $66.76 | 680 | 45,397 | 15,190 | Feb 25, 2011, 03:56 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2011 | Option/RSU Exercise | - | 2,138 | - | 15,741 | Feb 25, 2011, 03:56 PM |
