Burt A. Adelman serves as Executive at BIOGEN IDEC INC, where they oversee executive responsibilities. Since joining the company, Burt A. Adelman has executed 70 insider transactions totaling $31.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jul 25, 2025 involved transacting 428,326 shares valued at $0.
Burt A. Adelman currently holds 428,326 shares of BIOGEN IDEC INC (BIIB), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Burt A. Adelman has been a net seller of BIIB stock. They have purchased $354.3K and sold $30.6M worth of shares.
Burt A. Adelman's most recent insider trade was on Jul 25, 2025, when they sold 428,326 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Sep 18, 2023 | VERV | $0 | Gift | 37,168 | $N/A | Discretionary |
| Aug 11, 2023 | VERV | $0 | Gift | 266,258 | $N/A | Discretionary |
| Aug 11, 2023 | VERV | $0 | Gift | 266,258 | $N/A | Discretionary |
| Nov 7, 2022 | VERV | $0 | Gift | 106,200 | $N/A | Discretionary |
| Nov 7, 2022 | VERV | $0 | Gift | 106,200 | $N/A | Discretionary |
| May 12, 2022 | VERV | $121.5K | Purchase | 10,000 | $12.15 | Discretionary |
| Mar 15, 2022 | VERV | $85.5K | Purchase | 4,000 | $21.38 | Discretionary |
| Dec 2, 2021 | VERV | $147.3K | Purchase | 4,700 | $31.34 | Discretionary |
| Jan 22, 2016 | DYAX | $0 | Disposition | 208,602 | $N/A | Discretionary |
| Jan 13, 2016 | DYAX | $3.8K | Option Exercise | 1,251 | $3.00 | Discretionary |
| Jan 13, 2016 | DYAX | $3.3K | Option Exercise | 1,458 | $2.29 | Discretionary |
| Jan 13, 2016 | DYAX | $207.6K | Option Exercise | 140,268 | $1.48 | Discretionary |
| Dec 22, 2015 | DYAX | $14.8K | Option Exercise | 10,000 | $1.48 | Discretionary |
| Dec 17, 2015 | DYAX | $40.7K | Option Exercise | 27,500 | $1.48 | Discretionary |
| Mar 5, 2015 | DYAX | $146.8K | Sale | 9,375 | $15.66 | Discretionary |
| Jan 2, 2015 | DYAX | $111.0K | Option Exercise | 75,000 | $1.48 | Discretionary |
| Jan 2, 2015 | DYAX | $1.1M | Sale | 75,000 | $14.05 | Discretionary |
| Mar 3, 2014 | DYAX | $532.4K | Sale | 55,000 | $9.68 | Discretionary |
| Mar 3, 2014 | DYAX | $81.4K | Option Exercise | 55,000 | $1.48 | Discretionary |
| Feb 27, 2014 | DYAX | $382.5K | Award | 37,500 | $10.20 | Discretionary |
| Oct 15, 2007 | BIIB | $5.0M | Sale | 60,500 | $82.00 | Discretionary |
| Oct 15, 2007 | BIIB | $1.4M | Option Exercise | 23,000 | $62.28 | Discretionary |
| Oct 15, 2007 | BIIB | $2.5M | Option Exercise | 37,500 | $67.57 | Discretionary |
| Aug 30, 2007 | BIIB | $2.9M | Sale | 46,000 | $64.03 | Discretionary |
| Aug 30, 2007 | BIIB | $2.3M | Option Exercise | 46,000 | $49.03 | Discretionary |
| Aug 27, 2007 | BIIB | $380.6K | Option Exercise | 8,750 | $43.50 | Discretionary |
| Aug 27, 2007 | BIIB | $555.6K | Sale | 8,750 | $63.50 | Discretionary |
| Aug 17, 2007 | BIIB | $1.4M | Sale | 23,000 | $60.46 | Discretionary |