Alfred Sandrock serves as Executive at BIOGEN IDEC INC., where they oversee executive responsibilities. Since joining the company, Alfred Sandrock has executed 122 insider transactions totaling $17.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 24, 2026 involved selling 14,197 shares valued at $53.8K.
Alfred Sandrock currently holds 484,060 shares of BIOGEN IDEC INC. (BIIB), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Alfred Sandrock has been a net seller of BIIB stock. They have purchased $0 and sold $17.6M worth of shares.
Alfred Sandrock's most recent insider trade was on Feb 24, 2026, when they sold 14,197 shares at $3.79 per share.
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| $9.86 |
| Discretionary |
| Feb 21, 2024 | VYGR | $97.2K | Sale | 13,033 | $7.46 | Discretionary |
| Feb 9, 2024 | VYGR | $0 | Award | 130,000 | $N/A | Discretionary |
| Apr 3, 2023 | VYGR | $58.2K | Sale | 7,437 | $7.83 | Discretionary |
| Feb 17, 2023 | VYGR | $0 | Award | 120,000 | $N/A | Discretionary |
| Mar 22, 2022 | VYGR | $0 | Award | 100,000 | $N/A | Discretionary |
| Jun 7, 2021 | BIIB | $3.4M | Sale | 7,672 | $440.00 | Discretionary |
| Feb 12, 2021 | BIIB | $160.4K | Payment | 577 | $278.03 | Discretionary |
| Feb 12, 2021 | BIIB | $178.5K | Payment | 642 | $278.03 | Discretionary |
| Feb 12, 2021 | BIIB | $210.7K | Payment | 758 | $278.03 | Discretionary |
| Feb 12, 2021 | BIIB | $0 | Option Exercise | 1,708 | $N/A | Discretionary |
| Feb 12, 2021 | BIIB | $426.2K | Payment | 1,533 | $278.03 | Discretionary |
| Feb 12, 2021 | BIIB | $0 | Option Exercise | 1,446 | $N/A | Discretionary |
| Feb 12, 2021 | BIIB | $0 | Option Exercise | 1,300 | $N/A | Discretionary |
| Jan 27, 2021 | BIIB | $0 | Award | 3,728 | $N/A | Discretionary |
| Nov 4, 2020 | BIIB | $525.0K | Sale | 1,500 | $350.00 | Discretionary |
| Feb 15, 2020 | BIIB | $0 | Option Exercise | 1,213 | $N/A | Discretionary |
| Feb 15, 2020 | BIIB | $179.2K | Payment | 538 | $333.00 | Discretionary |
| Feb 12, 2020 | BIIB | $0 | Option Exercise | 2,211 | $N/A | Discretionary |
| Feb 12, 2020 | BIIB | $219.0K | Payment | 660 | $331.76 | Discretionary |
| Feb 12, 2020 | BIIB | $178.5K | Payment | 538 | $331.76 | Discretionary |
| Feb 12, 2020 | BIIB | $0 | Option Exercise | 1,583 | $N/A | Discretionary |
| Feb 12, 2020 | BIIB | $233.2K | Payment | 703 | $331.76 | Discretionary |
| Feb 12, 2020 | BIIB | $0 | Option Exercise | 1,422 | $N/A | Discretionary |
| Feb 22, 2019 | BIIB | $240.4K | Payment | 739 | $325.33 | Discretionary |
| Feb 22, 2019 | BIIB | $0 | Option Exercise | 1,663 | $N/A | Discretionary |
| Feb 15, 2019 | BIIB | $0 | Option Exercise | 1,318 | $N/A | Discretionary |
| Feb 15, 2019 | BIIB | $195.1K | Payment | 586 | $332.87 | Discretionary |
| Feb 12, 2019 | BIIB | $278.9K | Payment | 873 | $319.43 | Discretionary |