BIIB
insider transactionsBIOGEN INC. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
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Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Grant·A
Director
$0
1.5K sh
Own +17%
-
Grant·A
Director
$0
1.5K sh
Own +11%
-
Grant·A
Director
$0
1.5K sh
Own +6%
-
Grant·A
Director
$0
1.5K sh
Own +15%
-
Grant·A
Director
$0
1.5K sh
Own +29%
-
Grant·A
Director
$0
1.5K sh
Own +41%
-
Exercise·M
Director
$0
2.4K sh
Own New
-
Grant·A
Director
$0
1.5K sh
Own +64%
-
Exercise·M
Director
$0
2.4K sh
Own New
-
Grant·A
Director
$0
1.5K sh
Own +64%
-
Grant·A
Director
$0
2.0K sh
Own +29%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 9, 2026 | William A Hawkins | Grant A | 1.5K | $0 |
| Jun 9, 2026 | SHERWIN STEPHEN A | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Eric K Rowinsky | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Jesus B Mantas | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Susan Langer | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Monish D Patolawala | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Menelas N Pangalos | Exercise M | 2.4K | $0 |
| Jun 9, 2026 | Menelas N Pangalos | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Menelas N Pangalos | Exercise M | 2.4K | $0 |
| Jun 9, 2026 | Lloyd Minor | Grant A | 1.5K | $0 |
| Jun 9, 2026 | Maria C Freire | Grant A | 2.0K | $0 |
About BIIB insider trading
This page tracks insider transactions for BIOGEN INC. (BIIB) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.