0001785173 2024-11-07 2024-11-07 0001785173 dei:FormerAddressMember 2024-11-07 2024-11-07 0001785173 false 8-K 2024-11-07 89bio, Inc. DE 001-39122 36-4946844 655 Montgomery Street Suite 1500 San Francisco CA 94111 415 432-9270 142 Sansome Street Second Floor San Francisco CA 94104 false false false false Common Stock, par value $0.001 per share ETNB NASDAQ false