GOSS - Gossamer Bio COO/CFO purchases 200K common shares November, 15 2023 11:28 AM Gossamer Bio Inc. 2023-11-15 11:28:35 ET Gossamer Bio ( NASDAQ: GOSS ) disclosed on Tuesday its COO/CFO Bryan Giraudo bought 200K common shares at $0.5644/share for ~$112.9K. Shares of GOSS rose 26.9% on Wednesday. SEC Filing For further details see: Gossamer Bio COO/CFO purchases 200K common shares