X0407 4 2023-05-12 1 0001643269 Sumo Logic, Inc. SUMO 0001828646 McDonald Lynne Doherty 305 MAIN STREET REDWOOD CITY CA 94063 0 1 0 0 President WWD Field Operations 0 Common Stock 2023-05-12 4 D 0 456701 D 0 D Certain of these shares are represented by previously reported restricted stock units ("RSUs"). At the effective time of the merger (the "Effective Time") each issued and outstanding RSU was cancelled and converted into the right to receive an amount equal to $12.05 in cash (the "Per Share Price"), subject to the terms set forth in the Merger Agreement. Following the Effective Time, the cash payments relating to the unvested RSUs are subject to the Reporting Person's continued service with the Company through the applicable vesting dates that would have otherwise applied to the corresponding RSU. Pursuant to an Agreement and Plan of Merger (the "Merger Agreement") between Serrano Parent, Serrano Merger Sub, Inc., and Sumo Logic (the "Company"), each issued and outstanding share of the Company's common stock was cancelled and converted into the right to receive an amount in cash equal to the Per Share Price. /s/ Katherine Haar, Attorney-in-fact 2023-05-12