Generation Bio to implement 1-for-10 reverse stock split to regain Nasdaq compliance

Generation Bio Co.

Effective 5:00 pm ET July 21, 2025; every 10 shares combine into 1.
Outstanding shares reduce from ~67.3M to ~6.7M.
No fractional shares issued; cash payments for fractional shares.
Split-adjusted trading begins July 22 under ticker GBIO, new CUSIP 37148K 209.
Purpose: meet Nasdaq minimum bid price requirement for continued listing.

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