Gossamer Bio is trading 10.52% down now at $0.14 after its board selected a 1-for-80 reverse stock split to regain compliance with Nasdaq’s minimum bid-price requirement.
- The company announced the split on September 9, 2026, and Nasdaq confirmed the corporate action.
- The split becomes effective at 11:59 p.m. Eastern Time on September 10, 2026; split-adjusted trading is expected to begin September 11, 2026.
- Broader market weakness may add pressure, but the reverse split is the clear company-specific catalyst.