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Are Biogen Insiders Buying or Selling?
Biogen (BIIB) has had 1 insider transaction in the past 90 days, all sells. The most recent was Lloyd Minor, who sold 593 shares at $200.96 on August 4, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the BIIB AI Score. For government officials trading this stock, see BIIB congressional trading.
Who’s Trading Biogen Stock?
| Insider | Activity | Trades | Last Trade |
|---|---|---|---|
| Priya Singhal | Sold $1.3M | 6 | Feb 9, 2026 |
| STEPHEN SHERWIN | Sold $1.3M | 1 | Mar 7, 2025 |
| Rachid Izzar | Sold $300,000 | 1 | Jul 8, 2025 |
| CAROLINE DORSA | Bought $150,000 | 1 | May 2, 2025 |
| Lloyd Minor | Sold $120,000 | 1 | Aug 4, 2026 |
| Nicole Murphy | Bought $590 | 1 | Feb 12, 2026 |
Recent Biogen Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Lloyd Minor | Aug 4, 2026 | Sell | 593 | $200.96 | $120,000 |
| Nicole Murphy | Feb 12, 2026 | Buy | 3 | $195.04 | $590 |
| Priya Singhal | Feb 9, 2026 | Sell | 2,660 | $199.83 | $530,000 |
| Priya Singhal | Feb 2, 2026 | Sell | 748 | $179.3 | $130,000 |
| Priya Singhal | Sep 2, 2025 | Sell | 517 | $133.55 | $69,000 |
| Rachid Izzar | Jul 8, 2025 | Sell | 2,223 | $135 | $300,000 |
| Priya Singhal | May 19, 2025 | Sell | 3,806 | $126.25 | $480,000 |
| CAROLINE DORSA | May 2, 2025 | Buy | 1,235 | $122.72 | $150,000 |
| STEPHEN SHERWIN | Mar 7, 2025 | Sell | 8,760 | $150.02 | $1.3M |
| Priya Singhal | Dec 9, 2024 | Sell | 110 | $157.21 | $17,000 |
| Priya Singhal | Sep 3, 2024 | Sell | 431 | $204.22 | $88,000 |
Frequently Asked Questions: Biogen Insider Trading
In the past 90 days, Biogen insiders have made 0 buys and 1 sell. The net selling may indicate insiders are taking profits or reducing exposure.
The most recent sale was by Lloyd Minor who sold 593 shares on August 4, 2026. View all transactions in the table on this page.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
DORSA CAROLINE has bought the most BIIB stock in the last 2 years, with a total value of $150,000.
Singhal Priya has sold the most BIIB stock in the last 2 years, with a total value of $1.3M.
The total value of insider transactions for Biogen in the last 2 years is negative, amounting to -$2.9M. This suggests that insiders have predominantly sold shares, which could reflect various personal or financial considerations rather than a straightforward outlook on the company's future performance.
