0001540171 2026-09-15 2026-09-15 false 0001540171 8-K 2026-09-15 Avalyn Pharma Inc. DE 001-43251 45-2463191 105 W First Street Boston MA 02127 (206) 707-0340 Not Applicable false false false false Voting Common Stock, par value $0.001 per share AVLN NASDAQ true false