X0407 4 2023-03-31 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 0 Common Stock 2023-03-31 4 M 0 398 A 8004 D Common Stock 2023-03-31 4 F 0 163 34.67 D 7841 D Restricted Stock Unit 2023-03-31 4 M 0 398 0.00 D Common Stock 398 3189 D Each restricted stock unit represents the contingent right to receive one share of Everbridge common stock. 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 March 31, 2023, 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 March 31, 2023. On March 16, 2022, the reporting person was granted restricted stock units (RSUs). A portion of the RSUs vested on March 31, 2023. Not applicable. Noah F. Webster, Attorney-in-Fact 2023-04-04