X0306 4 2022-08-31 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 Common Stock 2022-08-31 4 M 0 126 A 5215 D Common Stock 2022-08-31 4 F 0 44 39.78 D 5516 D Restricted Stock Unit 0.00 2022-08-31 4 M 0 126 0.00 D Common Stock 126 0 D Restricted stock units convert into common stock on a one-for-one basis. Represents shares of Common Stock withheld by the Company to satisfy tax withholding obligations in connection with the net issuance of shares of Common Stock delivered to the Reporting Person on August 31, 2022, from the vesting of restricted stock units. 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 31, 2022. Includes an additional 345 shares purchased through the 2016 Everbridge Employee Stock Purchase Plan on September 1, 2022. On August 30, 2019, the reporting person was granted restricted stock units (RSUs). The RSUs vested as to 34% of the total shares on August 31, 2022. Not applicable. Elliot J. Mark, Attorney-in-Fact 2022-09-06