X0306 4 2022-05-19 0 0001437352 EVERBRIDGE, INC. EVBG 0001394093 Dean Alison C/O EVERBRIDGE, INC. 25 CORPORATE DRIVE, 4TH FLOOR BURLINGTON MA 01803 1 0 0 0 Restricted Stock Unit 0.00 2022-05-19 4 A 0 4176 0.00 A Common Stock 4176 4176 D Represents a grant of restricted stock units under the Everbridge, Inc. 2016 Equity Incentive Plan. Each restricted stock unit represents the contingent right to receive, upon vesting of the unit, one share of Everbridge common stock. Subject to accelerated vesting in certain circumstances, the restricted stock units are scheduled to vest last day of the month after the date of the 2023 annual meeting of stockholders of Everbridge, as long as the reporting person remains in the service of Everbridge through the respective vesting date. Not applicable. Elliot J. Mark, Attorney-in-Fact 2022-05-23