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Gossamer Bio Announces Effectiveness of 1-for-80 Reverse Stock Split

$GOSSPress releaseSep 11, 2026, 8:00 AM ETRead the release

Gossamer Bio's 1-for-80 reverse stock split became effective at 11:59 p.m. ET on September 10, 2026, with split-adjusted shares trading on the Nasdaq Global Select Market under GOSS at the September 11 open under a new CUSIP of 38341P 201. The split is intended to help the clinical-stage biopharmaceutical company regain compliance with Nasdaq's minimum bid price requirement, which requires a closing bid of at least $1.00 for 10 consecutive business days before the October 5, 2026 compliance date.

Key figures

New cusip
38341P 201
Effective time
11:59 p.m. ET September 10, 2026
Reverse split ratio
1-for-80
Nasdaq compliance date
October 5, 2026
Compliance days required
10 consecutive business days
Split adjusted trading start
September 11, 2026
Minimum bid price requirement
$1.00
Authorized common shares after
50000000
Authorized common shares before
4000000000
Authorized total capital stock after
120000000
Authorized total capital stock before
4070000000

AI analysis

Red flags4 · Pro

The rest of the AI analysis, red flags and sentiment are part of Signal8 Pro.

AI-generated analysis of a public disclosure. Not investment advice; verify against the original document.

    GOSS: Gossamer Bio Announces Effectiveness of 1-for-80 Reverse Stock Split — AI Analysis | Signal8