BIOGEN INC. (BIIB)
S&P 500NASDAQ-100XNASBIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)Net insider selling (90d)Watch BIIB
$218.19-$3.00 (-1.35%) Today
Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 2 | 1,186 | $240K |
| Grant or award | 9 | 14,045 | |
| Option exercise | 2 | 4,740 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
46 Form 4 filings on record, the earliest from Nov 4, 2024, newest first. Filing history page 2 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Sean Godbout - Officer | Option exercise | Common Stock | 257 | $0.00 | - | |
| Sean Godbout - Officer | Tax withholding / forfeiture | Common Stock | 76 | $201.18 | $15K | |
| Sean Godbout - Officer | Option exercise | Common Stock | 305 | $0.00 | - | |
| Sean Godbout - Officer | Tax withholding / forfeiture | Common Stock | 103 | $201.18 | $21K | |
| Sean Godbout - Officer | Option exercise | Common Stock | 517 | $0.00 | - | |
| Sean Godbout - Officer | Tax withholding / forfeiture | Common Stock | 180 | $201.18 | $36K | |
| Sean Godbout - Officer | Option exercise | Restricted Stock Unit | 257 | $0.00 | - | |
| Sean Godbout - Officer | Option exercise | Restricted Stock Unit | 305 | $0.00 | - | |
| Sean Godbout - Officer | Option exercise | Restricted Stock Unit | 517 | $0.00 | - | |
| Susan H. Alexander - Officer | Option exercise | Common Stock | 2,190 | $0.00 | - | |
| Susan H. Alexander - Officer | Tax withholding / forfeiture | Common Stock | 1,059 | $201.18 | $213K | |
| Susan H. Alexander - Officer | Option exercise | Common Stock | 1,940 | $0.00 | - | |
| Susan H. Alexander - Officer | Tax withholding / forfeiture | Common Stock | 931 | $201.18 | $187K | |
| Susan H. Alexander - Officer | Option exercise | Common Stock | 4,916 | $0.00 | - | |
| Susan H. Alexander - Officer | Tax withholding / forfeiture | Common Stock | 1,514 | $201.18 | $305K | |
| Susan H. Alexander - Officer | Option exercise | Restricted Stock Unit | 2,190 | $0.00 | - | |
| Susan H. Alexander - Officer | Option exercise | Restricted Stock Unit | 1,940 | $0.00 | - | |
| Susan H. Alexander - Officer | Option exercise | Restricted Stock Unit | 4,916 | $0.00 | - | |
| Priya Singhal - Officer | Option exercise | Common Stock | 1,829 | $0.00 | - | |
| Priya Singhal - Officer | Tax withholding / forfeiture | Common Stock | 582 | $179.89 | $105K | |
| Priya Singhal - Officer | Open-market sale | Common Stock | 748 | $179.30 | $134K | |
| Priya Singhal - Officer | Option exercise | Restricted Stock Unit | 1,829 | $0.00 | - | |
| Christopher Viehbacher - Officer | Option exercise | Common Stock | 7,040 | $0.00 | - | |
| Christopher Viehbacher - Officer | Tax withholding / forfeiture | Common Stock | 3,404 | $177.78 | $605K | |
| Christopher Viehbacher - Officer | Option exercise | Restricted Stock Unit | 7,040 | $0.00 | - | |
| Jane Grogan - Officer | Option exercise | Common Stock | 695 | $0.00 | - | |
| Jane Grogan - Officer | Tax withholding / forfeiture | Common Stock | 337 | $154.27 | $52K | |
| Jane Grogan - Officer | Option exercise | Restricted Stock Unit | 695 | $0.00 | - | |
| Sean Godbout - Officer | Option exercise | Common Stock | 26 | $0.00 | - | |
| Sean Godbout - Officer | Tax withholding / forfeiture | Common Stock | 8 | $155.25 | $1K | |
| Sean Godbout - Officer | Option exercise | Restricted Stock Unit | 26 | $0.00 | - | |
| Priya Singhal - Officer | Option exercise | Common Stock | 1,669 | $0.00 | - | |
| Priya Singhal - Officer | Tax withholding / forfeiture | Common Stock | 807 | $132.22 | $107K | |
| Priya Singhal - Officer | Open-market sale | Common Stock | 517 | $133.55 | $69K | |
| Priya Singhal - Officer | Option exercise | Restricted Stock Unit | 1,669 | $0.00 | - | |
| Rachid Izzar - Officer | Open-market sale | Common Stock | 2,223 | $135.00 | $300K | |
| William A. Hawkins - Director | Grant or award | Common Stock | 2,370 | $0.00 | - | |
| Stephen A. Sherwin - Director | Grant or award | Common Stock | 2,370 | $0.00 | - | |
| Caroline Dorsa - Director | Grant or award | Common Stock | 3,160 | $0.00 | - | |
| Caroline Dorsa - Director | Open-market purchase | Common Stock | 1,235 | $122.72 | $152K | |
| Robin Kramer - Officer | Option exercise | Common Stock | 351 | $0.00 | - | |
| Robin Kramer - Officer | Tax withholding / forfeiture | Common Stock | 170 | $157.78 | $27K | |
| Robin Kramer - Officer | Option exercise | Restricted Stock Unit | 351 | $0.00 | - | |
| Priya Singhal - Officer | Option exercise | Common Stock | 426 | $0.00 | - | |
| Priya Singhal - Officer | Tax withholding / forfeiture | Common Stock | 206 | $157.78 | $33K | |
| Priya Singhal - Officer | Open-market sale | Common Stock | 110 | $157.21 | $17K | |
| Priya Singhal - Officer | Option exercise | Restricted Stock Unit | 426 | $0.00 | - | |
| Susan H. Alexander - Officer | Gift | Common Stock | 20,082 | $0.00 | - | |
| Susan H. Alexander - Officer | Gift | Common Stock | 20,082 | $0.00 | - | |
| Jane Grogan - Officer | Option exercise | Common Stock | 695 | $0.00 | - | |
| Jane Grogan - Officer | Tax withholding / forfeiture | Common Stock | 204 | $173.79 | $35K | |
| Jane Grogan - Officer | Option exercise | Restricted Stock Unit | 695 | $0.00 | - |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Minor Lloyd | Director | 593 | $119K | View on EDGAR | |
| Minor Lloyd | Director | 593 | $121K | View on EDGAR |
BIOGEN INC. (BIIB) had 10 insider filings in the last 90 days, with the most recent on 2026-08-05. The full record for BIIB runs to 46 Form 4 filings, the earliest from 2024-11-04. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of BIIB were filed in the last 90 days. 2 purchases are on record for this company.
2 insider sales of BIIB were filed in the last 90 days, totaling $240K.
This page tracks BIIB Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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