X0306 4 2021-06-17 0 0001643269 Sumo Logic, Inc. SUMO 0001822612 Beedgen Christian 305 MAIN STREET REDWOOD CITY CA 94063 1 0 0 0 Common Stock 2021-06-17 4 S 0 5564 19.098 D 1934167 D Common Stock 2021-06-18 4 S 0 4855 21.31 D 1929312 D 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 $19.09 to $19.3564 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. Certain of these shares are represented by previously reported 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. Includes 1,637 shares acquired under the Issuer's Employee Stock Purchase Plan on June 15, 2021. These sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on April 8, 2021. This sale price represents the weighted average sale price of the shares sold ranging from $21.24 to $21.45 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. /s/ Katherine Haar, Attorney-in-fact 2021-06-22