Michael F. Maclean serves as Executive at BIOGEN IDEC INC, where they oversee executive responsibilities. Since joining the company, Michael F. Maclean has executed 64 insider transactions totaling $10.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Aug 6, 2025 involved selling 30,914 shares valued at $1.3M.
Michael F. Maclean currently holds 65,806 shares of BIOGEN IDEC INC (BIIB), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Michael F. Maclean has been a net seller of BIIB stock. They have purchased $0 and sold $10.6M worth of shares.
Michael F. Maclean's most recent insider trade was on Aug 6, 2025, when they sold 30,914 shares at $42.73 per share.
Get notified when new Form 4 filings are submitted
| $44.00 |
| Planned |
| Sep 19, 2024 | RNA | $0 | Award | 25,000 | $N/A | Planned |
| Sep 19, 2024 | RNA | $0 | Award | 25,000 | $N/A | Planned |
| Jun 18, 2024 | RNA | $439.4K | Sale | 11,228 | $39.13 | Planned |
| Jun 17, 2024 | RNA | $0 | Award | 25,000 | $N/A | Planned |
| Jun 17, 2024 | RNA | $0 | Award | 25,000 | $N/A | Planned |
| Jun 12, 2024 | RNA | $3.7M | Sale | 104,245 | $35.72 | Planned |
| Jun 12, 2024 | RNA | $919.4K | Option Exercise | 104,245 | $8.82 | Planned |
| May 14, 2024 | RNA | $2.1M | Sale | 75,000 | $28.28 | Planned |
| May 14, 2024 | RNA | $661.5K | Option Exercise | 75,000 | $8.82 | Planned |
| Mar 13, 2024 | RNA | $980.8K | Sale | 40,000 | $24.52 | Planned |
| Mar 13, 2024 | RNA | $352.8K | Option Exercise | 40,000 | $8.82 | Planned |
| Jan 22, 2024 | RNA | $16.4K | Sale | 1,616 | $10.13 | Planned |
| Jan 20, 2024 | RNA | $0 | Award | 22,500 | $N/A | Planned |
| Jan 20, 2023 | RNA | $0 | Award | 18,500 | $N/A | Discretionary |
| Jan 15, 2020 | AKCA | $0 | Award | 28,000 | $N/A | Discretionary |
| Sep 19, 2019 | AKCA | $0 | Award | 20,000 | $N/A | Discretionary |
| Oct 1, 2010 | BIIB | $53.9K | Payment | 953 | $56.53 | Discretionary |
| Aug 2, 2010 | BIIB | $125.4K | Sale | 2,206 | $56.84 | Discretionary |
| Aug 2, 2010 | BIIB | $33.1K | Sale | 582 | $56.91 | Discretionary |
| Aug 2, 2010 | BIIB | $116.3K | Sale | 2,047 | $56.83 | Discretionary |
| Aug 2, 2010 | BIIB | $51.6K | Sale | 907 | $56.87 | Discretionary |
| Aug 2, 2010 | BIIB | $125.1K | Sale | 2,201 | $56.84 | Discretionary |
| Aug 2, 2010 | BIIB | $52.1K | Sale | 917 | $56.85 | Discretionary |
| Aug 2, 2010 | BIIB | $38.8K | Sale | 682 | $56.87 | Discretionary |
| Mar 19, 2010 | BIIB | $225.4K | Sale | 3,757 | $60.00 | Discretionary |
| Mar 19, 2010 | BIIB | $245.1K | Sale | 4,085 | $60.00 | Discretionary |
| Feb 24, 2010 | BIIB | $23.4K | Payment | 423 | $55.29 | Discretionary |
| Feb 24, 2010 | BIIB | $23.6K | Payment | 427 | $55.29 | Discretionary |