| BIIB | | BIOGEN IDEC INC. | Stephen A. Sherwin | Director | Mar 22, 2013 | Sale | $176.88 | 1,500 | 265,320 | 2,655 | Mar 25, 2013, 02:18 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Mar 18, 2013 | Sale | $174.81 | 4,500 | 786,645 | 10,150 | Mar 19, 2013, 03:15 PM |
| BIIB | | BIOGEN IDEC INC. | Richard Mulligan | Director | Mar 13, 2013 | Sale | $175.38 | 7,980 | 1,399,530 | 9,920 | Mar 13, 2013, 02:56 PM |
| BIIB | | BIOGEN IDEC INC. | Stelios Papadopoulos | Director | Mar 11, 2013 | Option/RSU Exercise | $58.44 | 46,675 | 2,727,463 | 49,950 | Mar 12, 2013, 02:22 PM |
| BIIB | | BIOGEN IDEC INC. | Stelios Papadopoulos | Director | Mar 11, 2013 | Sale | $172.26 | 46,675 | 8,040,003 | 18,916 | Mar 12, 2013, 02:22 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Mar 01, 2013 | Tax Payment (Shares) | $168.70 | 630 | 106,281 | 9,410 | Mar 04, 2013, 04:42 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Mar 01, 2013 | Sale | $165.30 | 1,598 | 264,149 | 53,705 | Mar 04, 2013, 04:40 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2013 | Tax Payment (Shares) | $164.40 | 1,227 | 201,719 | 18,759 | Feb 26, 2013, 01:26 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2013 | Option/RSU Exercise | - | 2,598 | - | 19,986 | Feb 26, 2013, 01:26 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 23, 2013 | Tax Payment (Shares) | $164.40 | 1,803 | 296,413 | 15,135 | Feb 26, 2013, 01:25 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 23, 2013 | Option/RSU Exercise | - | 3,821 | - | 16,938 | Feb 26, 2013, 01:25 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 23, 2013 | Tax Payment (Shares) | $164.40 | 722 | 118,697 | 10,040 | Feb 26, 2013, 01:24 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 23, 2013 | Option/RSU Exercise | - | 1,529 | - | 10,762 | Feb 26, 2013, 01:24 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 23, 2013 | Option/RSU Exercise | - | 4,281 | - | 32,720 | Feb 26, 2013, 01:23 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 23, 2013 | Tax Payment (Shares) | $164.40 | 2,021 | 332,252 | 30,699 | Feb 26, 2013, 01:23 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 13, 2013 | Sale | $163.39 | 1,598 | 261,097 | 55,303 | Feb 14, 2013, 02:59 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 861 | 141,583 | 5,511 | Feb 12, 2013, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 09, 2013 | Option/RSU Exercise | - | 1,824 | - | 6,372 | Feb 12, 2013, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 831 | 136,650 | 4,548 | Feb 12, 2013, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 08, 2013 | Option/RSU Exercise | - | 2,284 | - | 5,379 | Feb 12, 2013, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 08, 2013 | Option/RSU Exercise | - | 2,765 | - | 26,377 | Feb 12, 2013, 05:24 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 1,731 | 284,646 | 28,439 | Feb 12, 2013, 05:24 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 09, 2013 | Option/RSU Exercise | - | 4,692 | - | 30,170 | Feb 12, 2013, 05:24 PM |
| BIIB | | BIOGEN IDEC INC. | Paul J. Clancy | Executive VP and CFO | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 899 | 147,832 | 25,478 | Feb 12, 2013, 05:24 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corporate Development | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 940 | 154,574 | 8,386 | Feb 12, 2013, 05:22 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corporate Development | Feb 08, 2013 | Option/RSU Exercise | - | 2,344 | - | 9,326 | Feb 12, 2013, 05:22 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 893 | 146,845 | 9,233 | Feb 12, 2013, 05:20 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 09, 2013 | Option/RSU Exercise | - | 1,890 | - | 10,126 | Feb 12, 2013, 05:20 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 523 | 86,002 | 8,236 | Feb 12, 2013, 05:20 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 08, 2013 | Option/RSU Exercise | - | 1,106 | - | 8,759 | Feb 12, 2013, 05:20 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 08, 2013 | Option/RSU Exercise | - | 2,165 | - | 11,185 | Feb 12, 2013, 05:12 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 1,275 | 209,661 | 13,117 | Feb 12, 2013, 05:12 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 09, 2013 | Option/RSU Exercise | - | 3,909 | - | 14,392 | Feb 12, 2013, 05:12 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 702 | 115,437 | 10,483 | Feb 12, 2013, 05:12 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 1,133 | 186,311 | 14,532 | Feb 12, 2013, 05:10 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 08, 2013 | Option/RSU Exercise | - | 3,487 | - | 15,665 | Feb 12, 2013, 05:10 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 1,836 | 301,912 | 17,388 | Feb 12, 2013, 05:10 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 09, 2013 | Option/RSU Exercise | - | 4,692 | - | 19,224 | Feb 12, 2013, 05:10 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 08, 2013 | Tax Payment (Shares) | $164.44 | 1,252 | 205,879 | 8,939 | Feb 12, 2013, 05:08 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 08, 2013 | Option/RSU Exercise | - | 3,006 | - | 10,191 | Feb 12, 2013, 05:08 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 09, 2013 | Tax Payment (Shares) | $164.44 | 3,723 | 612,210 | 46,958 | Feb 12, 2013, 05:05 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 09, 2013 | Option/RSU Exercise | - | 9,767 | - | 50,681 | Feb 12, 2013, 05:05 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 10, 2013 | Tax Payment (Shares) | $164.44 | 8,890 | 1,461,872 | 56,901 | Feb 12, 2013, 05:05 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Feb 10, 2013 | Option/RSU Exercise | - | 18,833 | - | 65,791 | Feb 12, 2013, 05:05 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Feb 06, 2013 | Option/RSU Exercise | $66.29 | 2,500 | 165,725 | 21,098 | Feb 07, 2013, 01:58 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Feb 06, 2013 | Sale | $165.55 | 2,500 | 413,875 | 18,598 | Feb 07, 2013, 01:58 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 06, 2013 | Option/RSU Exercise | $49.65 | 10,000 | 496,500 | 17,653 | Feb 07, 2013, 01:55 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Feb 06, 2013 | Sale | $165.55 | 10,000 | 1,655,500 | 7,653 | Feb 07, 2013, 01:55 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 01, 2013 | Option/RSU Exercise | - | 5,159 | - | 8,864 | Feb 05, 2013, 06:23 PM |
| BIIB | | BIOGEN IDEC INC. | Douglas E. Williams | EVP Research & Development | Feb 01, 2013 | Tax Payment (Shares) | $157.30 | 1,679 | 264,107 | 7,185 | Feb 05, 2013, 06:23 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corporate Development | Feb 01, 2013 | Tax Payment (Shares) | $157.30 | 1,678 | 263,949 | 6,982 | Feb 05, 2013, 04:25 PM |
| BIIB | | BIOGEN IDEC INC. | Steven H. Holtzman | EVP Corporate Development | Feb 01, 2013 | Option/RSU Exercise | - | 5,159 | - | 8,660 | Feb 05, 2013, 04:25 PM |
| BIIB | | BIOGEN IDEC INC. | Kenneth Dipietro | EVP Human Resources | Feb 01, 2013 | Tax Payment (Shares) | $157.30 | 711 | 111,840 | 1,440 | Feb 05, 2013, 04:23 PM |
| BIIB | | BIOGEN IDEC INC. | Kenneth Dipietro | EVP Human Resources | Feb 01, 2013 | Option/RSU Exercise | - | 2,151 | - | 2,151 | Feb 05, 2013, 04:23 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 01, 2013 | Tax Payment (Shares) | $157.30 | 1,491 | 234,534 | 3,095 | Feb 05, 2013, 04:22 PM |
| BIIB | | BIOGEN IDEC INC. | Stuart A. Kingsley | EVP, Global Comm. Operations | Feb 01, 2013 | Option/RSU Exercise | - | 4,586 | - | 4,586 | Feb 05, 2013, 04:22 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Nov 29, 2012 | Gift | - | 10,756 | - | 46,292 | Jan 24, 2013, 05:08 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Nov 29, 2012 | Gift | - | 10,756 | - | 5,378 | Jan 24, 2013, 05:08 PM |
| BIIB | | BIOGEN IDEC INC. | Alexander J. Denner | Director | Dec 26, 2012 | Sale | $148.89 | 3,989 | 593,914 | 8,911 | Dec 28, 2012, 10:15 AM |
| BIIB | | BIOGEN IDEC INC. | Alexander J. Denner | Director | Dec 27, 2012 | Sale | $148.36 | 3,991 | 592,086 | 6,220 | Dec 28, 2012, 10:15 AM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Nov 01, 2012 | Sale | $139.42 | 2,472 | 344,640 | 52,898 | Nov 02, 2012, 03:49 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Oct 01, 2012 | Sale | $149.16 | 3,654 | 545,031 | 54,142 | Oct 02, 2012, 01:10 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Sep 17, 2012 | Option/RSU Exercise | $66.29 | 5,000 | 331,450 | 23,598 | Sep 18, 2012, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Sep 17, 2012 | Sale | $155.00 | 5,000 | 775,000 | 18,598 | Sep 18, 2012, 05:26 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Sep 06, 2012 | Option/RSU Exercise | $66.29 | 5,000 | 331,450 | 23,598 | Sep 10, 2012, 02:20 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Sep 06, 2012 | Sale | $150.00 | 5,000 | 750,000 | 18,598 | Sep 10, 2012, 02:20 PM |
| BIIB | | BIOGEN IDEC INC. | Stephen A. Sherwin | Director | Sep 04, 2012 | Sale | $145.90 | 2,000 | 291,800 | 4,155 | Sep 05, 2012, 03:20 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Sep 04, 2012 | Sale | $145.90 | 3,654 | 533,119 | 57,796 | Sep 05, 2012, 03:17 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Aug 02, 2012 | Sale | $142.99 | 1,165 | 166,583 | 9,020 | Aug 03, 2012, 11:12 AM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Aug 01, 2012 | Sale | $146.30 | 3,655 | 534,727 | 61,450 | Aug 02, 2012, 03:24 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Jul 27, 2012 | Option/RSU Exercise | $57.04 | 58,070 | 3,312,157 | 68,255 | Jul 30, 2012, 02:58 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Jul 27, 2012 | Sale | $150.00 | 58,070 | 8,710,500 | 10,185 | Jul 30, 2012, 02:58 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 17, 2012 | Sale | $146.04 | 2,472 | 361,011 | 66,333 | Jul 18, 2012, 03:35 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 16, 2012 | Option/RSU Exercise | - | 21,339 | - | 85,256 | Jul 17, 2012, 01:03 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 16, 2012 | Tax Payment (Shares) | $144.61 | 17,679 | 2,556,560 | 76,357 | Jul 17, 2012, 01:03 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jul 02, 2012 | Sale | $143.50 | 1,183 | 169,761 | 63,917 | Jul 03, 2012, 10:40 AM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Jun 19, 2012 | Option/RSU Exercise | $49.59 | 10,000 | 495,900 | 17,653 | Jun 21, 2012, 11:41 AM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Jun 19, 2012 | Sale | $143.00 | 10,000 | 1,430,000 | 7,653 | Jun 21, 2012, 11:41 AM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Jun 15, 2012 | Option/RSU Exercise | $47.87 | 49,800 | 2,383,838 | 59,985 | Jun 18, 2012, 01:53 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Jun 15, 2012 | Sale | $140.00 | 49,800 | 6,972,000 | 10,185 | Jun 18, 2012, 01:53 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Jun 15, 2012 | Option/RSU Exercise | $36.94 | 5,000 | 184,700 | 23,598 | Jun 18, 2012, 01:50 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Jun 15, 2012 | Sale | $140.00 | 5,000 | 700,000 | 18,598 | Jun 18, 2012, 01:50 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Jun 07, 2012 | Option/RSU Exercise | $71.38 | 2,500 | 178,450 | 15,130 | Jun 11, 2012, 11:22 AM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Jun 07, 2012 | Sale | $135.00 | 2,500 | 337,500 | 12,630 | Jun 11, 2012, 11:22 AM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Jun 04, 2012 | Option/RSU Exercise | $36.94 | 5,000 | 184,700 | 21,578 | Jun 05, 2012, 03:45 PM |
| BIIB | | BIOGEN IDEC INC. | Robert W. Pangia | Director | Jun 04, 2012 | Sale | $130.00 | 5,000 | 650,000 | 16,578 | Jun 05, 2012, 03:45 PM |
| BIIB | | BIOGEN IDEC INC. | Stephen A. Sherwin | Director | Jun 04, 2012 | Sale | $126.45 | 2,500 | 316,125 | 4,135 | Jun 05, 2012, 03:43 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Jun 04, 2012 | Option/RSU Exercise | $71.38 | 2,400 | 171,312 | 15,030 | Jun 05, 2012, 03:41 PM |
| BIIB | | BIOGEN IDEC INC. | Brian S. Posner | Director | Jun 04, 2012 | Sale | $126.45 | 2,400 | 303,480 | 12,630 | Jun 05, 2012, 03:41 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | Jun 04, 2012 | Sale | $126.45 | 1,068 | 135,049 | 7,653 | Jun 05, 2012, 03:39 PM |
| BIIB | | BIOGEN IDEC INC. | George A. Scangos | Chief Executive Officer | Jun 01, 2012 | Sale | $128.63 | 1,183 | 152,169 | 65,100 | Jun 04, 2012, 04:26 PM |
| BIIB | | BIOGEN IDEC INC. | John Cox | EVP Pharmaceutical Oper & Tech | May 03, 2012 | Tax Payment (Shares) | $134.26 | 765 | 102,709 | 12,178 | May 04, 2012, 02:03 PM |
| BIIB | | BIOGEN IDEC INC. | Raymond Pawlicki | SVP, Chief Information Officer | May 03, 2012 | Tax Payment (Shares) | $134.26 | 765 | 102,709 | 8,721 | May 04, 2012, 02:02 PM |
| BIIB | | BIOGEN IDEC INC. | Lynn Schenk | Director | May 02, 2012 | Sale | $135.00 | 5,975 | 806,625 | 2,900 | May 03, 2012, 04:46 PM |
| BIIB | | BIOGEN IDEC INC. | Lynn Schenk | Director | May 02, 2012 | Sale | $135.00 | 8,480 | 1,144,800 | 7,100 | May 03, 2012, 04:46 PM |
| BIIB | | BIOGEN IDEC INC. | Lynn Schenk | Director | May 02, 2012 | Option/RSU Exercise | $53.43 | 5,975 | 319,244 | 8,875 | May 03, 2012, 04:46 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | May 02, 2012 | Option/RSU Exercise | $44.73 | 20,000 | 894,600 | 30,185 | May 03, 2012, 04:34 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | May 02, 2012 | Sale | $135.00 | 20,000 | 2,700,000 | 10,185 | May 03, 2012, 04:34 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Apr 25, 2012 | Option/RSU Exercise | $44.73 | 16,764 | 749,854 | 26,949 | Apr 26, 2012, 03:44 PM |
| BIIB | | BIOGEN IDEC INC. | Susan H. Alexander | EVP, General Counsel | Apr 25, 2012 | Sale | $130.00 | 16,764 | 2,179,320 | 10,185 | Apr 26, 2012, 03:44 PM |
