Planned sales, announced before they happen
1 trading plan running, 4 Form 144 notices for $905K
Plans running now
1
Priya Singhal, M.D.
What BIIB's directors and officers said they would sell, before they sold: trading plans the company reports each quarter, and the Form 144 notices sellers file on the day of a planned sale. Most of these sales are routine, such as selling shares from vesting stock awards.
Trading plans
Plans adopted or ended
| Insider | What | Date | Shares | Runs to | Reported in |
|---|---|---|---|---|---|
| Lloyd Minor Director |
Adopted 10b5-1 plan | May 4, 2026 | see filing | Aug 7, 2026 | 10-Q Jul 29, 2026 |
| Priya Singhal, M.D. EVP, Head of Development |
Adopted 10b5-1 plan | Apr 30, 2026 | see filing | Oct 29, 2027 | 10-Q Jul 29, 2026 |
| Stephen Sherwin Director |
Ended 10b5-1 plan | Apr 2, 2025 | see filing | – | 10-Q Jul 31, 2025 |
| Rachid Izzar EVP, Global Product Strategy and Commercialization |
Adopted 10b5-1 plan | Mar 12, 2025 | see filing | Aug 18, 2025 | 10-Q May 1, 2025 |
| Stephen Sherwin Director |
Adopted 10b5-1 plan | Feb 24, 2025 | see filing | Aug 24, 2025 | 10-Q May 1, 2025 |
| Priya Singhal, M.D. EVP, Head of Development |
Adopted 10b5-1 plan | Feb 18, 2025 | see filing | Feb 27, 2026 | 10-Q May 1, 2025 |
| Stephen A. Sherwin Director |
Adopted 10b5-1 plan | Nov 7, 2024 | see filing | May 8, 2025 | 10-K Feb 12, 2025 |
What the company wroteFrom time to time, our officers (as defined in Rule 16a-1(f)) and directors may enter into Rule 10b5-1 or non-Rule 10b5-1 trading arrangements (as each such term is defined in Item 408 of Regulation S-K). During the fourth quarter of 2024 our officers and directors took the following actions with respect to 10b5-1 trading arrangements: Trading Arrangement Name and Position Action Date Rule 10b5-1 Non-Rule 10b5-1 Total Shares to be Sold Expiration Date Stephen A. Sherwin, Director Adopt 11/7/2024 X — 8,760 05/08/2025 | |||||
| Robin Kramer Senior Vice President, Chief Accounting Officer |
Adopted 10b5-1 plan | Nov 13, 2023 | see filing | 728 days | 10-K Feb 14, 2024 |
What the company wroteFrom time to time, our officers (as defined in Rule 16a-1(f)) and directors may enter into Rule 10b5-1 or non-Rule 10b5-1 trading arrangements (as each such term is defined in Item 408 of Regulation S-K). During the fourth quarter of 2023 our officers and directors took the following actions with respect to 10b5-1 trading arrangements: Trading Arrangement Name and Position Action Date Rule 10b5-1 Non-Rule 10b5-1 Total Shares to be Sold Expiration Date Robin Kramer (Senior Vice President, Chief Accounting Officer) Adopt 11/13/2023 X — 1,500 11/10/2025 | |||||
From the XBRL of the company's 10-Qs and 10-Ks (Regulation S-K Item 408, reported since 2023): 15 filings checked since Apr 25, 2023.
Form 144
Notices of planned sales
| Filed | Seller | Shares | Value | Shares came from | 10b5-1 plan | Form 4 sales after |
|---|---|---|---|---|---|---|
| Aug 4, 2026 | Minor Lloyd Director |
593 | $119K | Restricted Stock Vesting | adopted May 4, 2026 | 593 shares from Aug 4, 2026 |
| Aug 3, 2026 | Minor Lloyd Director |
593 | $121K | Restricted Stock Vesting | adopted May 4, 2026 | 1,186 shares from Aug 3, 2026 |
| Feb 9, 2026 | Singhal Priya Officer |
2,660 | $532K | Restricted Stock Vesting | adopted Feb 18, 2025 | none found |
| Feb 2, 2026 | Singhal Priya Officer |
748 | $134K | Restricted Stock Vesting | adopted Feb 18, 2025 | none found |
From the Form 144 XML filed with the SEC, since Feb 2, 2026. The value is the seller's estimate on the notice. "Form 4 sales after" matches the seller's Form 4 sales in the 30 days after the notice, by name; Form 4s go back 180 days.