X0306 4 2019-09-01 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 2019-09-01 4 M 0 811 A 4473 D Common Stock 2019-09-30 4 M 0 388 A 4987 D Common Stock 2019-11-21 4 S 0 49 86.50 D 4938 D Common Stock 2019-11-25 4 S 0 762 86.50 D 4176 D Restricted Stock Unit 0.00 2019-09-01 4 M 0 1237 0.00 D Common Stock 1237 1275 D Restricted Stock Unit 0.00 2019-09-30 4 M 0 594 0.00 D Common Stock 594 1206 D Restricted stock units convert into common stock on a one-for-one basis. Represents the net issuance of shares of Common Stock delivered to the Reporting Person on September 1, 2019, after 426 shares were withheld by the Company to satisfy tax withholding obligations in connection with 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 September 1, 2019. Restricted stock units convert into common stock on a one-for-one basis. Represents the net issuance of shares of Common Stock delivered to the Reporting Person on September 30, 2019, after 206 shares were withheld by the Company to satisfy tax withholding obligations in connection with 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 September 30, 2019. Includes an addition 126 shares purchased through ESPP on September 13, 2019. On November 16, 2017, the reporting person was granted restricted stock units (RSUs). The RSUs vested as to 33% of the total shares on September 1, 2019. Not applicable. On October 1, 2018, the reporting person was granted restricted stock units (RSUs). The RSUs vested as to 33% of the total shares on September 30, 2019. /s/ Elliot J. Mark, Attorney-in-Fact 2019-11-25