X0306 4 2021-07-31 0 0001437352 EVERBRIDGE, INC. EVBG 0001770750 Brickley Patrick C/O EVERBRIDGE, INC. 25 CORPORATE DRIVE BURLINGTON MA 01803 0 1 0 0 SVP, Chief Financial Officer Common Stock 2021-07-31 4 M 0 607 A 10531 D Common Stock 2021-08-02 4 S 0 375 141.4878 D 10156 D Restricted Stock Unit 0.00 2021-07-31 4 M 0 607 0.00 D Common Stock 607 1232 D Restricted stock units (RSUs) convert into common stock on a one-for-one basis. Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. On July 29, 2020, the reporting person was granted restricted stock units (RSUs). The RSUs vested as to 33% on July 31, 2021. Not applicable. /s/ Elliot J. Mark, Attorney-in-Fact 2021-08-03