X0306 4 2021-09-15 0 0001643269 Sumo Logic, Inc. SUMO 0001822612 Beedgen Christian 305 MAIN STREET REDWOOD CITY CA 94063 1 0 0 0 Common Stock 2021-09-15 4 M 0 23500 0.98 A 1952812 D Common Stock 2021-09-15 4 S 0 23500 18.001 D 1929312 D Common Stock 2021-09-15 4 S 0 4287 17.924 D 1925025 D Stock Option (right to buy) 0.98 2021-09-15 4 M 0 23500 0.00 D 2024-03-04 Common Stock 23500 247000 D Certain of these shares are represented by previously reported Restricted Stock Units ("RSUs"). Each RSU represents the Reporting Person's right to receive one share of Common Stock of the Issuer subject to the applicable vesting schedule and the Reporting Person continuing to be a Service Provider through each such date. This sale price represents the weighted average sale price of the shares sold ranging from $17.45 to $18.21 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. Shares sold to cover tax obligations in connection with the vesting of RSUs. This sale price represents the weighted average sale price of the shares sold ranging from $17.921 to $18.061 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. The shares underlying this option are fully vested and immediately exercisable. /s/ Katherine Haar, Attorney-in-fact 2021-09-17