X0508 4 2023-12-31 0 0001437352 EVERBRIDGE, INC. EVBG 0001961022 Barney Bryan Reed 25 CORPORATE DRIVE BURLINGTON MA 01803 0 1 0 0 Chief Product Officer 0 Common Stock 2023-12-31 4 M 0 25000 A 25730 D Common Stock 2024-01-02 4 S 0 7509 23.5246 D 18221 D Restricted Stock Unit 2023-12-31 4 M 0 25000 0.00 D Common Stock 25000 75000 D Each restricted stock unit represents the contingent right to receive one share of Everbridge common stock. Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. On December 30, 2023, the reporting person was granted restricted stock units (RSUs). 25% of the RSUs vested on December 31, 2023. The remaining RSUs will vest in equal installments over twelve calendar quarters, provided, however, as long as the reporting person remains in the service of Everbridge through the respective vesting date. Not applicable. /s/ Noah F. Webster, Attorney-in-Fact 2024-01-02