Gossamer Bio announces 1-for-80 reverse stock split

GOSS•2026-09-09

Reverse stock split details

Gossamer Bio set a 1-for-80 reverse stock split to support efforts to regain Nasdaq minimum bid-price compliance. Split takes effect at 11:59 p.m. ET on Sept. 10, 2026; split-adjusted trading starts Sept. 11 under GOSS.

Capital structure adjustments

Authorized common shares cut to 50 million from 4 billion; total authorized capital stock reduced to 120 million from 4.07 billion.

Other securities adjusted proportionately

Convertible notes, warrants, prefunded warrants, and equity awards will be adjusted proportionately to reflect the 1-for-80 consolidation.

Sources

Gossamer Bio announces 1-for-80 reverse stock split

Sec

Gossamer Bio announces 1-for-80 reverse stock split

Reverse stock split details

Capital structure adjustments

Other securities adjusted proportionately

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Gossamer Bio announces 1-for-80 reverse stock split

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