Biogen (BIIB) insider buying
7 open-market purchases of BIIB by Biogen's executives and directors since August 2025, worth $585 in total, from SEC Form 4 filings.
The most recent: Nicole Murphy bought $585 on February 12, 2026.
The biggest buyer over the period is Nicole Murphy: 1 purchase, $585.
By year
| Year | Purchases | Value |
|---|---|---|
| 2026 | 5 | $585 |
| 2025 | 2 | $0 |
Biggest buyers
| Insider | Buys | Value |
|---|---|---|
| Nicole Murphy | 1 | $585 |
| Gilbert Ray Cisneros, Jr. | 2 | $0 |
| Ro Khanna | 4 | $0 |
Every purchase
Newest first. From SEC Form 4 filings. Insider buying across the market.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Feb 12, 2026 | Nicole Murphy |
3 | $195.03 | $585 | Form 4 |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $179.89 | — | — |
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. |
0 | $179.89 | — | — |
| Jan 29, 2026 | Ro Khanna |
0 | $176.18 | — | — |
| Jan 29, 2026 | Ro Khanna |
0 | $176.18 | — | — |
| Aug 26, 2025 | Ro Khanna |
0 | $136.72 | — | — |
| Aug 26, 2025 | Ro Khanna |
0 | $136.72 | — | — |
Questions
Are Biogen insiders buying the stock?
7 open-market purchases of BIIB by Biogen's executives and directors since August 2025, worth $585 in total, from SEC Form 4 filings. The most recent: Nicole Murphy bought $585 on February 12, 2026.
What counts as insider buying here?
Open-market purchases (Form 4 code P) by officers and directors. Option exercises, grants and purchases by 10% owners are left out.
From Biogen's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.