Biogen $18.9 Million Securities Class Action Settlement
By the Class Action Buddy Editorial Team · Last reviewed July 22, 2026
Looking for a settlement you can still file?
This one is closed, but our 60-second eligibility quiz finds the ones that are still open.
Who Was Eligible?
Who the settlement covered:
- You purchased or acquired Biogen securities (such as common stock) during the class period defined in the settlement
- You suffered a financial loss as a result of holding or selling those securities
- You are a U.S.-based or international investor who held a qualifying position in Biogen stock during the relevant timeframe
- Institutional investors, individual retail investors, and retirement accounts may all qualify — check your brokerage records
- You did not opt out of the class action prior to the settlement
How Much Did It Pay?
The total settlement fund is $18.9 million. Your individual payout will depend on how many valid claims are submitted and the size of your recognized loss — meaning how many shares you bought, at what price, and what losses you incurred during the class period. Investors with larger positions who suffered greater losses will generally receive a higher proportion of the settlement fund. Specific per-share payment amounts are not yet publicly confirmed, so the final payout per claimant remains to be determined once all claims are reviewed. Historically, securities settlements of this size can result in payouts ranging from a few dollars to hundreds of dollars per claimant, depending on claim volume and individual loss calculations. Filing a claim is worth doing even if your expected recovery seems modest.How this claim was filed
This settlement is closed, so the steps below are kept for reference only — they no longer lead anywhere you can file.
- Confirm you purchased Biogen securities during the applicable class period by reviewing your brokerage or investment account statements
- Gather documentation of your trades, including purchase dates, number of shares, purchase price, and any sale transactions — this proof is required
- Visit the official settlement claims administrator website to obtain the claim form (check ClassActionBuddy or the settlement URL for the latest link)
- Complete the claim form accurately, including all required trade information and your contact details
- Submit your claim form along with supporting documentation before the deadline of September 24, 2026
Looking for something you can still claim?
This one has closed, but the open settlements list is kept current, and Class Action Buddy will tell you when a new one matches your profile.
Frequently Asked Questions
What is the deadline to file a claim for the Biogen $18.9 Million Securities Class Action Settlement?
The deadline to file a claim was Sep 24, 2026, and it has passed. Claims are no longer accepted for this settlement.
Did I need documentation for the Biogen $18.9 Million Securities Class Action Settlement?
Yes — this settlement required supporting documentation, and the official claim form set out what counted.
Who qualifies for the Biogen securities class action settlement?
Investors who purchased Biogen securities during the defined class period and suffered financial losses may qualify. You'll need brokerage records showing your trades to file a valid claim.
How much money will I get from the Biogen settlement?
Your payout depends on the size of your recognized loss and the total number of valid claims filed. The total fund is $18.9 million, and individual payouts vary. Larger losses generally result in a higher payment.
What is the deadline to file a Biogen securities settlement claim?
The claim filing deadline is September 24, 2026. Make sure to submit your completed claim form with all required documentation before this date to be eligible for a payment.
Do I need proof to file a Biogen securities settlement claim?
Yes, proof is required. You'll need to provide documentation of your Biogen stock transactions, such as brokerage statements or trade confirmations showing purchase and sale dates, share quantities, and prices.
Is the Biogen securities settlement legitimate?
Yes, this is a legitimate $18.9 million class action settlement. Securities class actions are filed on behalf of investors and overseen by a federal court. Biogen has agreed to this settlement without admitting wrongdoing.
Primary source: the official settlement administrator’s website named in the court-approved class notice. We track this settlement from public settlement-notice sources; a single official administrator claim URL was not on file, so confirm the details on the official settlement website before you file.
Class Action Buddy is an independent directory and is not affiliated with, endorsed by, or sponsored by the settlement administrator or the court. This page is general information, not legal advice. See how we verify settlements.
This settlement has closed
The filing deadline for this one has passed, so no new claims are being accepted. Class Action Buddy tracks the settlements that are still open and tells you when a new one matches your profile.
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