X0407 4 2023-03-29 0 0001620463 Athira Pharma, Inc. ATHA 0001258693 PICKERING GRANT C/O ATHIRA PHARMA, INC. 18706 NORTH CREEK PARKWAY, SUITE 104 BOTHELL WA 98011 1 0 0 0 0 Common Stock 2023-03-29 4 P 0 10000 2.33 A 10783 D Common Stock 2023-03-30 4 P 0 15000 2.47 A 25783 D The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares purchased. These shares were purchased in multiple transactions at prices ranging from $2.26 to $2.34, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth herein. The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares purchased. These shares were purchased in multiple transactions at prices ranging from $2.42 to $2.50, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth herein. Glenna Mileson, Attorney-in-fact for Grant Pickering 2023-03-31