Gossamer Bio, Inc. (GOSS) Faces Securities Class Action Amid 80% Drop On Phase 3 PROSERA Trial Failure- Hagens Berman

SAN FRANCISCO, April 27, 2026 /PRNewswire/ -- A securities class action lawsuit has been filed against Gossamer Bio, Inc. (NASDAQ: GOSS) and an executive, seeking to represent investors who purchased or otherwise acquired Gossamer securities between June 16, 2025 and February 20, 2026....