| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Aug 31, 2017 | Award/Grant | $316.56 | 933 | 295,350 | 383,858 | Aug 31, 2017, 09:45 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Jul 25, 2017 | Sale | $290.01 | 4,974 | 1,442,510 | 22,258 | Jul 26, 2017, 04:22 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Jul 19, 2017 | Sale | $285.00 | 7,758 | 2,211,030 | 27,232 | Jul 20, 2017, 05:00 PM |
| BIIB | | BIOGEN INC. | Brian S. Posner | Director | Jun 09, 2017 | Sale | $256.31 | 1,084 | 277,840 | 6,330 | Jun 12, 2017, 04:29 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2017 | Tax Payment (Shares) | $252.38 | 747 | 188,528 | 3,616 | Jun 05, 2017, 04:38 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2017 | Option/RSU Exercise | - | 1,259 | - | 4,027 | Jun 05, 2017, 04:38 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2017 | Option/RSU Exercise | - | 1,736 | - | 4,663 | May 04, 2017, 04:16 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2017 | Tax Payment (Shares) | $271.34 | 564 | 153,036 | 4,099 | May 04, 2017, 04:16 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 01, 2017 | Buy | $271.35 | 1,402 | 380,433 | 2,927 | May 02, 2017, 04:18 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Apr 27, 2017 | Buy | $278.50 | 73,858 | 20,569,476 | 383,858 | May 01, 2017, 05:47 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Apr 25, 2017 | Sale | $290.00 | 9,892 | 2,868,680 | 10,813 | Apr 27, 2017, 04:23 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Mar 13, 2017 | Sale | $291.55 | 9,891 | 2,883,721 | 20,705 | Mar 14, 2017, 07:32 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2017 | Option/RSU Exercise | - | 481 | - | 718 | Mar 03, 2017, 06:07 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2017 | Tax Payment (Shares) | $293.26 | 157 | 46,042 | 561 | Mar 03, 2017, 06:07 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Mar 01, 2017 | Sale | $290.07 | 973 | 282,238 | 9,041 | Mar 03, 2017, 06:02 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Feb 28, 2017 | Option/RSU Exercise | - | 6,780 | - | 31,948 | Mar 02, 2017, 05:24 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Feb 28, 2017 | Tax Payment (Shares) | $279.35 | 3,054 | 853,135 | 30,596 | Mar 02, 2017, 05:24 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 28, 2017 | Tax Payment (Shares) | $278.17 | 2,981 | 829,217 | 10,014 | Mar 02, 2017, 05:22 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 28, 2017 | Option/RSU Exercise | - | 4,785 | - | 10,398 | Mar 02, 2017, 05:22 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 28, 2017 | Tax Payment (Shares) | $278.54 | 2,409 | 670,996 | 34,990 | Mar 02, 2017, 05:20 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 28, 2017 | Option/RSU Exercise | - | 5,559 | - | 36,024 | Mar 02, 2017, 05:20 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 28, 2017 | Tax Payment (Shares) | $285.23 | 89 | 25,386 | 4,505 | Mar 02, 2017, 05:18 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 28, 2017 | Option/RSU Exercise | - | 681 | - | 4,508 | Mar 02, 2017, 05:18 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Feb 28, 2017 | Tax Payment (Shares) | $286.64 | 738 | 211,542 | 8,752 | Mar 02, 2017, 05:16 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Feb 28, 2017 | Option/RSU Exercise | - | 2,064 | - | 9,237 | Mar 02, 2017, 05:16 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 28, 2017 | Tax Payment (Shares) | $278.66 | 2,456 | 684,399 | 7,177 | Mar 02, 2017, 05:12 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 28, 2017 | Option/RSU Exercise | - | 5,696 | - | 8,260 | Mar 02, 2017, 05:12 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Jan 09, 2017 | Option/RSU Exercise | $52.22 | 5,450 | 284,599 | 22,078 | Jan 10, 2017, 04:15 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Jan 09, 2017 | Sale | $295.39 | 5,450 | 1,609,876 | 16,628 | Jan 10, 2017, 04:15 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Dec 01, 2016 | Tax Payment (Shares) | $295.78 | 171 | 50,578 | 7,408 | Dec 05, 2016, 04:34 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Dec 01, 2016 | Sale | $296.53 | 48 | 14,233 | 7,360 | Dec 05, 2016, 04:34 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Dec 01, 2016 | Tax Payment (Shares) | $295.78 | 53 | 15,676 | 3,884 | Dec 05, 2016, 04:32 PM |
| BIIB | | BIOGEN INC. | Stephen A. Sherwin | Director | Nov 08, 2016 | Gift | - | 1,000 | - | 4,905 | Nov 14, 2016, 04:32 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Oct 04, 2016 | Sale | $311.94 | 262 | 81,728 | 7,579 | Oct 05, 2016, 04:24 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Oct 01, 2016 | Tax Payment (Shares) | $313.03 | 1,888 | 591,001 | 8,221 | Oct 04, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Oct 01, 2016 | Option/RSU Exercise | - | 1,982 | - | 9,154 | Oct 04, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Oct 03, 2016 | Sale | $313.00 | 380 | 118,940 | 7,841 | Oct 04, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | Caroline Dorsa | Director | Sep 22, 2016 | Option/RSU Exercise | $53.64 | 27,570 | 1,478,855 | 44,663 | Sep 26, 2016, 04:24 PM |
| BIIB | | BIOGEN INC. | Caroline Dorsa | Director | Sep 22, 2016 | Sale | $314.00 | 27,570 | 8,656,980 | 17,093 | Sep 26, 2016, 04:24 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Jul 21, 2016 | Sale | $280.00 | 157 | 43,960 | 54,779 | Jul 22, 2016, 05:03 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Jun 06, 2016 | Sale | $290.00 | 555 | 160,950 | 2,402 | Jun 07, 2016, 04:09 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Jun 02, 2016 | Tax Payment (Shares) | $289.73 | 534 | 154,716 | 2,957 | Jun 06, 2016, 08:48 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Jun 02, 2016 | Option/RSU Exercise | - | 1,643 | - | 3,491 | Jun 06, 2016, 08:48 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Jun 03, 2016 | Sale | $290.00 | 842 | 244,180 | 54,936 | Jun 06, 2016, 08:14 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Jun 01, 2016 | Sale | $287.97 | 487 | 140,241 | 55,778 | Jun 02, 2016, 04:39 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | May 31, 2016 | Sale | $290.00 | 3,368 | 976,720 | 56,265 | Jun 02, 2016, 04:39 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | May 25, 2016 | Sale | $280.00 | 157 | 43,960 | 59,633 | May 27, 2016, 08:59 AM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | May 02, 2016 | Sale | $274.74 | 487 | 133,798 | 59,790 | May 04, 2016, 05:03 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | May 01, 2016 | Tax Payment (Shares) | $274.99 | 113 | 31,074 | 3,007 | May 02, 2016, 04:36 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | May 01, 2016 | Option/RSU Exercise | - | 348 | - | 3,120 | May 02, 2016, 04:36 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Apr 06, 2016 | Sale | $275.00 | 102 | 28,050 | 1,848 | Apr 07, 2016, 05:03 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Apr 06, 2016 | Sale | $280.00 | 157 | 43,960 | 60,277 | Apr 07, 2016, 05:01 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | EVP, Chief Scientific Officer | Apr 02, 2016 | Tax Payment (Shares) | $260.54 | 459 | 119,588 | 3,150 | Apr 05, 2016, 05:06 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | EVP, Chief Scientific Officer | Apr 02, 2016 | Option/RSU Exercise | - | 975 | - | 3,609 | Apr 05, 2016, 05:06 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Apr 01, 2016 | Sale | $258.83 | 487 | 126,050 | 60,434 | Apr 05, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Mar 01, 2016 | Sale | $261.37 | 487 | 127,287 | 60,921 | Mar 03, 2016, 04:36 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 12, 2015 | Option/RSU Exercise | - | 9,189 | - | 43,466 | Mar 03, 2016, 04:27 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 25, 2016 | Sale | $261.90 | 183 | 47,928 | 7,990 | Feb 26, 2016, 04:08 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Feb 25, 2016 | Sale | $261.90 | 84 | 22,000 | 8,127 | Feb 26, 2016, 04:06 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 273 | 70,704 | 26,870 | Feb 25, 2016, 05:13 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Feb 23, 2016 | Option/RSU Exercise | - | 579 | - | 27,143 | Feb 25, 2016, 05:13 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 22 | 5,698 | 2,687 | Feb 25, 2016, 05:09 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 23, 2016 | Option/RSU Exercise | - | 66 | - | 2,709 | Feb 25, 2016, 05:09 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | SVP, Chief Scientific Officer | Feb 23, 2016 | Option/RSU Exercise | - | 145 | - | 2,597 | Feb 25, 2016, 05:07 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | SVP, Chief Scientific Officer | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 48 | 12,432 | 2,549 | Feb 25, 2016, 05:07 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 300 | 77,697 | 31,840 | Feb 25, 2016, 05:05 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 23, 2016 | Option/RSU Exercise | - | 636 | - | 32,140 | Feb 25, 2016, 05:05 PM |
| BIIB | | BIOGEN INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 382 | 98,934 | 30,516 | Feb 25, 2016, 05:04 PM |
| BIIB | | BIOGEN INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 23, 2016 | Option/RSU Exercise | - | 810 | - | 30,898 | Feb 25, 2016, 05:04 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 98 | 25,381 | 1,865 | Feb 25, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | Adam Koppel | EVP, Strategy and Bus. Dev. | Feb 23, 2016 | Option/RSU Exercise | - | 301 | - | 1,963 | Feb 25, 2016, 05:02 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 300 | 77,697 | 3,937 | Feb 25, 2016, 05:01 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 23, 2016 | Option/RSU Exercise | - | 636 | - | 4,237 | Feb 25, 2016, 05:01 PM |
| BIIB | | BIOGEN INC. | Steven H. Holtzman | EVP Corporate Development | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 273 | 70,704 | 8,326 | Feb 25, 2016, 04:59 PM |
| BIIB | | BIOGEN INC. | Steven H. Holtzman | EVP Corporate Development | Feb 23, 2016 | Option/RSU Exercise | - | 579 | - | 8,599 | Feb 25, 2016, 04:59 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 162 | 41,956 | 8,211 | Feb 25, 2016, 04:57 PM |
| BIIB | | BIOGEN INC. | Adriana Karaboutis | EVP, Tech, Bus. Sol & Corp Aff | Feb 23, 2016 | Option/RSU Exercise | - | 498 | - | 8,373 | Feb 25, 2016, 04:57 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 164 | 42,474 | 8,173 | Feb 25, 2016, 04:52 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 23, 2016 | Option/RSU Exercise | - | 347 | - | 8,337 | Feb 25, 2016, 04:52 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 23, 2016 | Option/RSU Exercise | - | 2,964 | - | 62,812 | Feb 25, 2016, 04:51 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 23, 2016 | Tax Payment (Shares) | $258.99 | 1,395 | 361,291 | 61,417 | Feb 25, 2016, 04:51 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 17, 2016 | Sale | $256.16 | 487 | 124,750 | 59,848 | Feb 19, 2016, 04:20 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 17, 2016 | Sale | $256.16 | 722 | 184,948 | 7,990 | Feb 19, 2016, 04:18 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 11,815 | 2,920,904 | 60,335 | Feb 17, 2016, 06:03 PM |
| BIIB | | BIOGEN INC. | George A. Scangos | Chief Executive Officer | Feb 12, 2016 | Option/RSU Exercise | - | 13,701 | - | 58,628 | Feb 17, 2016, 06:03 PM |
| BIIB | | BIOGEN INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,552 | 383,685 | 30,088 | Feb 17, 2016, 06:01 PM |
| BIIB | | BIOGEN INC. | John Cox | EVP Pharmaceutical Oper & Tech | Feb 12, 2016 | Option/RSU Exercise | - | 3,298 | - | 31,145 | Feb 17, 2016, 06:01 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,369 | 338,444 | 3,601 | Feb 17, 2016, 06:00 PM |
| BIIB | | BIOGEN INC. | Kenneth Dipietro | EVP Human Resources | Feb 12, 2016 | Option/RSU Exercise | - | 3,316 | - | 4,466 | Feb 17, 2016, 06:00 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 12, 2016 | Option/RSU Exercise | - | 425 | - | 2,645 | Feb 17, 2016, 05:59 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 26 | 6,428 | 2,643 | Feb 17, 2016, 05:59 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,827 | 451,671 | 8,712 | Feb 17, 2016, 05:57 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP CMO Neuro & Neurodegenerat | Feb 12, 2016 | Option/RSU Exercise | - | 2,799 | - | 9,085 | Feb 17, 2016, 05:57 PM |
| BIIB | | BIOGEN INC. | Steven H. Holtzman | EVP Corporate Development | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,314 | 324,847 | 8,020 | Feb 17, 2016, 05:56 PM |
| BIIB | | BIOGEN INC. | Steven H. Holtzman | EVP Corporate Development | Feb 12, 2016 | Option/RSU Exercise | - | 3,194 | - | 8,839 | Feb 17, 2016, 05:56 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,328 | 328,308 | 31,504 | Feb 17, 2016, 05:55 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP, Chief Legal Officer | Feb 12, 2016 | Option/RSU Exercise | - | 3,289 | - | 32,292 | Feb 17, 2016, 05:55 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | SVP, Chief Scientific Officer | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 352 | 87,021 | 2,452 | Feb 17, 2016, 05:54 PM |
| BIIB | | BIOGEN INC. | Spyridon Artavanis-Tsakonas | SVP, Chief Scientific Officer | Feb 12, 2016 | Option/RSU Exercise | - | 1,057 | - | 2,692 | Feb 17, 2016, 05:54 PM |
| BIIB | | BIOGEN INC. | Paul J. Clancy | Executive VP and CFO | Feb 12, 2016 | Tax Payment (Shares) | $247.22 | 1,699 | 420,027 | 26,564 | Feb 17, 2016, 05:53 PM |
