| Filing Date | Insider | Type | 10b5-1 | Net Shares | Ownership changeShares owned | Avg. Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-04-23 | Davis Gregory D Head of Research & Technology | Sale | -69,827 | -37.72%115,284 | $0.25 | $17,694 | View SEC filing | |
| 2026-04-23 | Dubois-Stringfellow Nathalie SVP-CHIEF DEVELOPMENT OFFICER | Sale | -345,942 | -36.80%594,110 | $0.26 | $89,184 | View SEC filing | |
| 2023-09-28 | BIOGEN INC. 10% Owner | Sale | -6,000,000 | -25.37%17,652,466 | $0.50 | $3,000,000 | View SEC filing | |
| 2022-08-31 | BIOGEN INC. 10% Owner | Sale | -500,000 | -2.07%23,652,466 | $5.31 | $2,657,240 | View SEC filing | |
| 2022-06-06 | Markels John Director | Purchase | +6,784 | +26.40%32,484 | $3.69 | $25,029 | View SEC filing | |
| 2022-06-03 | PARKER H STEWART Director | Purchase | +5,000 | +11.44%48,700 | $3.60 | $17,996 | View SEC filing | |
| 2021-12-30 | BIOGEN INC. 10% Owner | Sale | -2,764 | -0.01%24,152,466 | $8.51 | $23,522 | View SEC filing | |
| 2021-12-28 | BIOGEN INC. 10% Owner | Sale | -81,787 | -0.34%24,155,230 | $8.55 | $699,666 | View SEC filing | |
| 2021-12-10 | BIOGEN INC. 10% Owner | Sale | -23,660 | -0.10%24,237,017 | $8.56 | $202,541 | View SEC filing | |
| 2021-12-09 | BIOGEN INC. 10% Owner | Sale | -127,992 | -0.52%24,260,677 | $8.59 | $1,099,265 | View SEC filing | |
| 2021-12-03 | BIOGEN INC. 10% Owner | Sale | -2,604 | -0.01%24,388,669 | $8.51 | $22,166 | View SEC filing | |
| 2021-11-30 | BIOGEN INC. 10% Owner | Sale | -28,884 | -0.12%24,391,273 | $8.60 | $248,434 | View SEC filing | |
| 2021-03-25 | LOEB GARY EVP, General Counsel & Sec. | Sale | -17,524 | -17.39%83,238 | $13.13 | $230,042 | View SEC filing | |
| 2021-01-06 | Ramelmeier Rolf Andrew EVP, Technical Operations | Sale | -2,464 | -3.60%65,978 | $16.74 | $41,247 | View SEC filing | |
| 2020-12-30 | Ramelmeier Rolf Andrew EVP, Technical Operations | Sale | -3,331 | -4.64%68,442 | $18.13 | $60,391 | View SEC filing | |
| 2020-12-18 | Ramasastry Saira Director | Sale | -10,000 | -40.00%15,000 | $13.27 | $132,747 | View SEC filing | |
| 2020-03-20 | DILLY STEPHEN GEORGE Director | Sale | -35,000 | -87.50%5,000 | $6.00 | $210,000 | View SEC filing | |
| 2020-03-19 | PARKER H STEWART Director | Purchase | +3,000 | +30.00%13,000 | $5.20 | $15,585 | View SEC filing | |
| 2020-03-19 | Zakrzewski Joseph S Director | Purchase | +5,000 | +20.00%30,000 | $4.99 | $24,950 | View SEC filing | |
| 2020-03-18 | DILLY STEPHEN GEORGE Director | Sale | -15,000 | -75.00%5,000 | $6.02 | $90,261 | View SEC filing | |
| 2020-03-13 | Zakrzewski Joseph S Director | Purchase | +20,000 | +400.00%25,000 | $6.15 | $123,000 | View SEC filing | |
| 2019-05-17 | Yi Kathy EVP & Chief Financial Officer | Sale | -5,000 | -16.39%25,512 | $10.00 | $50,000 | View SEC filing | |
| 2019-04-16 | Yi Kathy EVP & Chief Financial Officer | Sale | -5,000 | -16.39%25,512 | $12.11 | $60,550 | View SEC filing | |
| 2019-03-18 | Yi Kathy EVP & Chief Financial Officer | Sale | -5,000 | -16.39%25,512 | $10.00 | $50,000 | View SEC filing | |
| 2019-03-05 | Yi Kathy EVP & Chief Financial Officer | Sale | -5,000 | -16.39%25,512 | $10.00 | $50,000 | View SEC filing |
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