Gossamer Bio launches exchange offer for 5.00% notes; holders of 75.2% support

Gossamer Bio, Inc.

Exchange Offer: up to $72M new 7.50% Convertible Secured Notes due 2030, plus up to 317.6M common shares and 150M Purchase Warrants.
Supporting Noteholders holding 75.2% of existing notes agree to tender and consent to indenture amendments.
Conditions include minimum 98% participation; early settlement expected June 3, final June 18, 2026.
Also filed Q1 2026 financial results (press release not provided in filing text).
Stockholder proposals include increasing authorized shares from 700M to 4B and reverse stock split (1:10 to 1:150).

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