X0508 4 2023-08-08 0 0001437352 EVERBRIDGE, INC. EVBG 0001764375 HUFF PHILLIP E C/O EVERBRIDGE, INC. 25 CORPORATE DRIVE BURLINGTON MA 01803 0 1 0 0 VP, Chief Accounting Officer 0 Common Stock 2023-08-08 4 M 0 114 A 9063 D Common Stock 2023-08-08 4 F 0 40 22.79 D 9023 D Performance-based Restricted Stock Unit 2023-08-08 4 M 0 114 0.00 A Common Stock 114 519 D Performance-based restricted stock units (PSUs) convert into common stock on a one-for-one basis. Shares withheld by the Company to satisfy tax withholding obligations (and the net issuance) are based on the closing price of the Company's Common Stock on August 8, 2023. On May 5, 2021, the reporting person was granted performance-based restricted stock units (PSUs). The PSUs vested as to 22% on August 8, 2023. Not applicable. /s/ Noah F. Webster, Attorney-in-Fact 2023-08-10