GBIO Stock Alert: Halper Sadeh LLC is Investigating Whether the Sale of Generation Bio Co. is Fair to Shareholders

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NEW YORK--(BUSINESS WIRE)--Dec 15, 2025--

Halper Sadeh LLC, an investor rights law firm, is investigating whether the sale of Generation Bio Co. (NASDAQ: GBIO) to XOMA Royalty Corporation for $4.2913 per share and one non-transferable contingent value right per share entitling holders to receive potential payments under certain conditions is fair to Generation Bio shareholders.

Halper Sadeh encourages Generation Bio shareholders to click here to learn more about their legal rights and options or contact Daniel Sadeh or Zachary Halper at (212) 763-0060 or [email protected] or [email protected].

The investigation concerns whether Generation Bio and its board of directors violated the federal securities laws and/or breached their fiduciary duties to shareholders by failing to, among other things: (1) obtain the best possible consideration for Generation Bio shareholders; (2) determine whether XOMA is underpaying for Generation Bio; and (3) disclose all material information necessary for Generation Bio shareholders to adequately assess and value the merger consideration.

On behalf of Generation Bio shareholders, Halper Sadeh LLC may seek increased consideration for shareholders, additional disclosures and information concerning the proposed transaction, or other relief and benefits. We would handle the action on a contingent fee basis, whereby you would not be responsible for out-of-pocket payment of our legal fees or expenses.

Halper Sadeh LLC represents investors all over the world who have fallen victim to securities fraud and corporate misconduct. Our attorneys have been instrumental in implementing corporate reforms and recovering millions of dollars on behalf of defrauded investors.

Attorney Advertising. Prior results do not guarantee a similar outcome.

View source version on businesswire.com:https://www.businesswire.com/news/home/20251215026034/en/

CONTACT: Halper Sadeh LLC

One World Trade Center

85th Floor

New York, NY 10007

Daniel Sadeh, Esq.

Zachary Halper, Esq.

(212) 763-0060

[email protected]

[email protected]

https://www.halpersadeh.com

KEYWORD: NEW YORK UNITED STATES NORTH AMERICA

INDUSTRY KEYWORD: CLASS ACTION LAWSUIT PROFESSIONAL SERVICES LEGAL

SOURCE: Halper Sadeh LLC

Copyright Business Wire 2025.

PUB: 12/15/2025 07:38 PM/DISC: 12/15/2025 07:38 PM

http://www.businesswire.com/news/home/20251215026034/en