0001620463 2025-12-18 2025-12-18 true 0001620463 8-K/A 2025-12-18 Athira Pharma, Inc. DE 001-39503 45-3368487 18706 North Creek Parkway Suite 104 Bothell WA 98011 425 620-8501 false false false false Common Stock, $0.0001 par value per share ATHA NASDAQ true false This Amendment No. 1 on Form 8‑K/A (this “Amendment”) amends the Current Report on Form 8‑K of Athira Pharma, Inc. filed on December 18, 2025 (the “Original Report”). This Amendment is being filed for the sole purpose of including hyperlinks to the exhibits filed with the Original Report. The full text of the Original Report is repeated in this Amendment for convenience, but has not been modified from the text of the Original Report except solely to include the hyperlinks described above.