| BIIB | | BIOGEN INC. | Brian S. Posner | Director | Dec 02, 2019 | Sale | $292.35 | 1,055 | 308,429 | 6,995 | Dec 03, 2019, 05:58 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Aug 01, 2019 | Tax Payment (Shares) | $243.06 | 208 | 50,556 | 2,215 | Aug 05, 2019, 04:20 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Aug 01, 2019 | Option/RSU Exercise | - | 179 | - | 2,295 | Aug 05, 2019, 04:20 PM |
| BIIB | | BIOGEN INC. | Daniel Karp | EVP, Corporate Development | Jul 02, 2019 | Option/RSU Exercise | - | 196 | - | 322 | Jul 05, 2019, 04:51 PM |
| BIIB | | BIOGEN INC. | Daniel Karp | EVP, Corporate Development | Jul 02, 2019 | Tax Payment (Shares) | $236.37 | 58 | 13,709 | 264 | Jul 05, 2019, 04:51 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2019 | Tax Payment (Shares) | $219.29 | 960 | 210,518 | 8,025 | Jun 04, 2019, 04:56 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2019 | Option/RSU Exercise | - | 1,126 | - | 8,525 | Jun 04, 2019, 04:56 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2019 | Tax Payment (Shares) | $230.52 | 658 | 151,682 | 21,829 | May 06, 2019, 04:20 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2019 | Option/RSU Exercise | - | 1,480 | - | 22,487 | May 06, 2019, 04:20 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | May 02, 2019 | Buy | $231.24 | 38,000 | 8,787,120 | 643,000 | May 02, 2019, 05:06 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Apr 30, 2019 | Buy | $229.25 | 50,342 | 11,540,904 | 575,000 | May 02, 2019, 05:06 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | May 01, 2019 | Buy | $229.46 | 30,000 | 6,883,800 | 605,000 | May 02, 2019, 05:06 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 01, 2019 | Buy | $231.48 | 4,351 | 1,007,169 | 21,007 | May 02, 2019, 04:30 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Mar 18, 2019 | Option/RSU Exercise | $52.22 | 6,114 | 319,273 | 24,701 | Mar 19, 2019, 04:08 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Mar 18, 2019 | Sale | $328.55 | 6,114 | 2,008,755 | 18,587 | Mar 19, 2019, 04:08 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2019 | Tax Payment (Shares) | $334.10 | 658 | 219,838 | 7,235 | Mar 05, 2019, 12:00 AM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2019 | Option/RSU Exercise | - | 568 | - | 7,488 | Mar 05, 2019, 12:00 AM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 22, 2019 | Tax Payment (Shares) | $325.33 | 4,109 | 1,336,781 | 32,715 | Feb 26, 2019, 05:09 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 22, 2019 | Option/RSU Exercise | $38.51 | 8,058 | 310,285 | 36,085 | Feb 26, 2019, 05:09 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 22, 2019 | Option/RSU Exercise | - | 1,663 | - | 11,148 | Feb 26, 2019, 05:07 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 22, 2019 | Tax Payment (Shares) | $325.33 | 739 | 240,419 | 10,409 | Feb 26, 2019, 05:07 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 15, 2019 | Tax Payment (Shares) | $332.87 | 2,340 | 778,916 | 16,574 | Feb 20, 2019, 06:10 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 15, 2019 | Option/RSU Exercise | - | 5,269 | - | 18,914 | Feb 20, 2019, 06:10 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 15, 2019 | Tax Payment (Shares) | $332.87 | 586 | 195,062 | 9,485 | Feb 20, 2019, 06:08 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 15, 2019 | Option/RSU Exercise | - | 1,318 | - | 10,071 | Feb 20, 2019, 06:08 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 15, 2019 | Option/RSU Exercise | - | 1,448 | - | 7,968 | Feb 20, 2019, 06:07 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 15, 2019 | Tax Payment (Shares) | $332.87 | 643 | 214,035 | 7,325 | Feb 20, 2019, 06:07 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 15, 2019 | Tax Payment (Shares) | $332.87 | 749 | 249,320 | 7,777 | Feb 20, 2019, 05:54 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 15, 2019 | Option/RSU Exercise | - | 1,685 | - | 8,526 | Feb 20, 2019, 05:54 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 15, 2019 | Tax Payment (Shares) | $332.87 | 749 | 249,320 | 28,027 | Feb 20, 2019, 05:53 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 15, 2019 | Option/RSU Exercise | - | 1,685 | - | 28,776 | Feb 20, 2019, 05:53 PM |
| BIIB | | BIOGEN INC. | Brian S. Posner | Director | Feb 14, 2019 | Gift | - | 315 | - | 6,895 | Feb 15, 2019, 04:21 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 2,622 | 837,545 | 13,645 | Feb 14, 2019, 06:33 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 12, 2019 | Option/RSU Exercise | - | 6,899 | - | 16,267 | Feb 14, 2019, 06:33 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 2,518 | 804,325 | 8,753 | Feb 14, 2019, 06:29 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 12, 2019 | Option/RSU Exercise | - | 4,643 | - | 9,452 | Feb 14, 2019, 06:29 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 919 | 293,556 | 6,520 | Feb 14, 2019, 06:17 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 12, 2019 | Option/RSU Exercise | - | 3,062 | - | 7,059 | Feb 14, 2019, 06:17 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 551 | 176,006 | 2,244 | Feb 14, 2019, 06:10 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Feb 12, 2019 | Option/RSU Exercise | - | 1,836 | - | 2,561 | Feb 14, 2019, 06:10 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 1,267 | 404,718 | 6,841 | Feb 14, 2019, 06:07 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 12, 2019 | Option/RSU Exercise | - | 3,827 | - | 7,639 | Feb 14, 2019, 06:07 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 12, 2019 | Tax Payment (Shares) | $319.43 | 1,021 | 326,138 | 27,091 | Feb 14, 2019, 06:04 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Officer & Sec. | Feb 12, 2019 | Option/RSU Exercise | - | 3,268 | - | 27,710 | Feb 14, 2019, 06:04 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Jan 30, 2019 | Buy | $324.86 | 30,000 | 9,745,860 | 491,858 | Feb 01, 2019, 04:19 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Jan 31, 2019 | Buy | $330.52 | 25,800 | 8,527,391 | 517,658 | Feb 01, 2019, 04:19 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Feb 01, 2019 | Buy | $328.45 | 7,000 | 2,299,164 | 524,658 | Feb 01, 2019, 04:19 PM |
| BIIB | | BIOGEN INC. | Jeffrey D. Capello | EVP & Chief Financial Officer | Jan 02, 2019 | Tax Payment (Shares) | $304.69 | 414 | 126,142 | 917 | Jan 04, 2019, 04:17 PM |
| BIIB | | BIOGEN INC. | Jeffrey D. Capello | EVP & Chief Financial Officer | Jan 02, 2019 | Option/RSU Exercise | - | 1,331 | - | 1,331 | Jan 04, 2019, 04:17 PM |
| BIIB | | BIOGEN INC. | Chirfi Guindo | EVP Glob. Mkt Acc & Cust Innov | Dec 01, 2018 | Tax Payment (Shares) | $333.72 | 409 | 136,491 | 2,543 | Dec 04, 2018, 08:21 PM |
| BIIB | | BIOGEN INC. | Chirfi Guindo | EVP Glob. Mkt Acc & Cust Innov | Dec 01, 2018 | Option/RSU Exercise | - | 602 | - | 2,721 | Dec 04, 2018, 08:21 PM |
| BIIB | | BIOGEN INC. | Lynn Schenk | Director | Nov 28, 2018 | Gift | - | 32 | - | 7,877 | Dec 03, 2018, 05:21 PM |
| BIIB | | BIOGEN INC. | Stephen A. Sherwin | Director | Oct 31, 2018 | Gift | - | 850 | - | 5,739 | Nov 05, 2018, 04:15 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Sep 26, 2018 | Sale | $350.00 | 1,000 | 350,000 | 4,281 | Sep 27, 2018, 04:16 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Aug 01, 2018 | Tax Payment (Shares) | $344.06 | 163 | 56,082 | 1,044 | Aug 03, 2018, 04:14 PM |
| BIIB | | BIOGEN INC. | Ginger Gregory | EVP, Human Resources | Aug 01, 2018 | Option/RSU Exercise | - | 262 | - | 1,122 | Aug 03, 2018, 04:14 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2018 | Option/RSU Exercise | - | 1,384 | - | 5,897 | Jun 05, 2018, 04:31 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Jun 01, 2018 | Tax Payment (Shares) | $297.09 | 1,076 | 319,669 | 5,281 | Jun 05, 2018, 04:31 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2018 | Tax Payment (Shares) | $274.13 | 750 | 205,598 | 9,368 | May 04, 2018, 06:09 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | May 02, 2018 | Option/RSU Exercise | - | 1,687 | - | 10,118 | May 04, 2018, 06:09 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Apr 25, 2018 | Buy | $269.91 | 48,000 | 12,955,680 | 461,858 | Apr 27, 2018, 07:48 AM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2018 | Option/RSU Exercise | - | 532 | - | 4,539 | Mar 05, 2018, 04:41 PM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Mar 01, 2018 | Tax Payment (Shares) | $282.35 | 642 | 181,269 | 4,302 | Mar 05, 2018, 04:41 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 27, 2018 | Sale | $290.83 | 259 | 75,325 | 6,553 | Feb 28, 2018, 05:39 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 23, 2018 | Tax Payment (Shares) | $292.78 | 208 | 60,898 | 6,812 | Feb 27, 2018, 06:25 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 23, 2018 | Option/RSU Exercise | - | 467 | - | 7,020 | Feb 27, 2018, 06:25 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 23, 2018 | Sale | $293.44 | 908 | 266,444 | 6,553 | Feb 27, 2018, 06:25 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 23, 2018 | Option/RSU Exercise | - | 92 | - | 4,772 | Feb 27, 2018, 06:24 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 23, 2018 | Tax Payment (Shares) | $292.78 | 28 | 8,198 | 4,744 | Feb 27, 2018, 06:24 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 23, 2018 | Tax Payment (Shares) | $292.78 | 381 | 111,549 | 24,844 | Feb 27, 2018, 06:22 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 23, 2018 | Option/RSU Exercise | - | 857 | - | 25,225 | Feb 27, 2018, 06:22 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 22, 2018 | Tax Payment (Shares) | $284.81 | 727 | 207,057 | 7,461 | Feb 26, 2018, 04:12 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 22, 2018 | Option/RSU Exercise | - | 1,635 | - | 8,188 | Feb 26, 2018, 04:12 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 22, 2018 | Tax Payment (Shares) | $284.81 | 58 | 16,519 | 4,680 | Feb 26, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 22, 2018 | Option/RSU Exercise | - | 194 | - | 4,738 | Feb 26, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 22, 2018 | Tax Payment (Shares) | $284.81 | 727 | 207,057 | 24,368 | Feb 26, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 22, 2018 | Option/RSU Exercise | - | 1,635 | - | 25,095 | Feb 26, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 20, 2018 | Sale | $292.00 | 743 | 216,956 | 6,553 | Feb 21, 2018, 04:10 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 15, 2018 | Sale | $298.85 | 1,294 | 386,712 | 7,296 | Feb 20, 2018, 08:09 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 15, 2018 | Option/RSU Exercise | - | 5,354 | - | 10,233 | Feb 20, 2018, 04:27 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 1,877 | 561,936 | 8,356 | Feb 20, 2018, 04:27 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 596 | 178,430 | 8,590 | Feb 20, 2018, 04:25 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 15, 2018 | Option/RSU Exercise | - | 1,339 | - | 9,186 | Feb 20, 2018, 04:25 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 509 | 152,384 | 4,898 | Feb 20, 2018, 04:20 PM |
| BIIB | | BIOGEN INC. | Michael D. Ehlers | EVP, Research and Development | Feb 15, 2018 | Option/RSU Exercise | - | 1,712 | - | 5,407 | Feb 20, 2018, 04:20 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 510 | 152,684 | 23,460 | Feb 20, 2018, 04:17 PM |
| BIIB | | BIOGEN INC. | Susan H. Alexander | EVP Chief Legal Corp Svc & Sec | Feb 15, 2018 | Option/RSU Exercise | - | 1,712 | - | 23,970 | Feb 20, 2018, 04:17 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 56 | 16,765 | 4,544 | Feb 20, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Feb 15, 2018 | Option/RSU Exercise | - | 161 | - | 4,600 | Feb 20, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 15, 2018 | Tax Payment (Shares) | $299.38 | 442 | 132,326 | 4,412 | Feb 20, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Paul Mckenzie | EVP Pharmaceutical Oper & Tech | Feb 15, 2018 | Option/RSU Exercise | - | 1,472 | - | 4,854 | Feb 20, 2018, 12:00 AM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 12, 2018 | Tax Payment (Shares) | $316.63 | 1,316 | 416,685 | 7,847 | Feb 14, 2018, 06:37 PM |
| BIIB | | BIOGEN INC. | Alfred Sandrock | EVP, Chief Medical Officer | Feb 12, 2018 | Option/RSU Exercise | - | 2,012 | - | 8,565 | Feb 14, 2018, 06:37 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Jan 09, 2018 | Sale | $329.65 | 5,832 | 1,922,519 | 17,707 | Jan 10, 2018, 05:28 PM |
| BIIB | | BIOGEN INC. | Robert W. Pangia | Director | Jan 09, 2018 | Option/RSU Exercise | $57.83 | 5,832 | 337,265 | 23,539 | Jan 10, 2018, 05:28 PM |
| BIIB | | BIOGEN INC. | Michel Vounatsos | Chief Executive Officer | Dec 29, 2017 | Buy | $320.55 | 780 | 250,029 | 4,879 | Jan 02, 2018, 04:21 PM |
| BIIB | | BIOGEN INC. | Gregory F. Covino | VP, Chief Accounting Officer | Dec 01, 2017 | Tax Payment (Shares) | $319.35 | 157 | 50,138 | 4,542 | Dec 05, 2017, 04:36 PM |
| BIIB | | BIOGEN INC. | Stephen A. Sherwin | Director | Nov 29, 2017 | Gift | - | 850 | - | 5,734 | Dec 05, 2017, 04:29 PM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Nov 28, 2017 | Buy | $316.12 | 20,000 | 6,322,400 | 403,858 | Nov 30, 2017, 07:30 AM |
| BIIB | | BIOGEN INC. | Alexander J. Denner | Director | Nov 29, 2017 | Buy | $319.84 | 10,000 | 3,198,400 | 413,858 | Nov 30, 2017, 07:30 AM |
