Gossamer Bio, Inc. has implemented a 1-for-80 reverse stock split of its common stock, which became effective at 11:59 p.m. ET on September 10, 2026. The primary goal of this action is to increase the per-share trading price to regain compliance with the Nasdaq's minimum bid price requirement. The company's stock is expected to begin trading on a split-adjusted basis at market open on September 11, 2026.

Key Details

  • Reverse Split Ratio: Every 80 shares of issued and outstanding common stock were combined into one share.
  • Purpose & Timeline: The split is intended to help the company regain compliance with the Nasdaq's $1.00 minimum bid price rule. The compliance deadline is October 5, 2026.
  • Authorized Share Reduction: The number of authorized shares of common stock was reduced from 4 billion to 50 million.
  • Trading Information: The common stock will continue to trade on the Nasdaq Global Select Market under the symbol "GOSS" but will have a new CUSIP number (38341P 201).