BIIB Investors Have Opportunity to Join Biogen Inc. Fraud Investigation with the Schall Law Firm

LOS ANGELES, June 11, 2026 /PRNewswire/ -- The Schall Law Firm, a national shareholder rights litigation firm, announces that it is investigating claims on behalf of investors of Biogen Inc. ("Biogen" or "the Company") (NASDAQ: BIIB) for violations of the securities laws.

The investigation focuses on whether the Company issued false and/or misleading statements and/or failed to disclose information pertinent to investors. Biogen revealed on May 14, 2026, that the topline data from its Phase 2 CELIA study for diranersen  failed to meet its primary endpoints. Based on these facts, the Company's shares fell about 6.4% on the same day.

If you are a shareholder who suffered a loss, click here to participate.

We also encourage you to contact Brian Schall of the Schall Law Firm, 2049 Century Park East, Suite 2460, Los Angeles, CA 90067, at 310-301-3335, to discuss your rights free of charge. You can also reach us through the firm's website at www.schallfirm.com, or by email at bschall@schallfirm.com.

The Schall Law Firm represents investors around the world and specializes in securities class action lawsuits and shareholder rights litigation.

This press release may be considered Attorney Advertising in some jurisdictions under the applicable law and rules of ethics.

CONTACT:
The Schall Law Firm 
Brian Schall, Esq.
310-301-3335
info@schallfirm.com
www.schallfirm.com

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SOURCE The Schall Law Firm