X0306 4/A 2020-09-21 2020-09-21 0 0001643269 Sumo Logic, Inc. SUMO 0001822614 Sayar Ramin 305 MAIN STREET REDWOOD CITY CA 94063 1 1 0 0 President and CEO Common Stock 2020-09-21 4 C 0 14856 A 44856 I See footnote On September 21, 2020, the Reporting Person filed a Form 4, reporting in Table I that 54,883 shares of Common Stock were held by The 2011 Sayar Family Trust (the "2011 Trust"), and reporting in Table II the disposition by the 2011 Trust of 18,570 shares of Series F Preferred Stock and 36,313 shares of Series G Preferred Stock. The Reporting Person did not and does not have beneficial ownership of shares held by the 2011 Trust and such shares should not have been reported in the Form 4 as beneficially owned. The Series F Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and had no expiration date. These shares are held of record by The Sayar Family Trust, for which the Reporting Person serves as co-trustee. /s/ Katherine Haar, by power of attorney 2021-03-05