X0206 3 2019-01-01 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 970 D Stock Option (Right to Buy) 13.6275 2015-07-15 2025-07-14 Common Stock 3446 D Restricted Stock Unit 0.00 Common Stock 2512 D Performance-based Restricted Stock Unit 0.00 Common Stock 1800 D Restricted Stock Unit 0.00 Common Stock 1800 D 25% of the shares subject to the Stock Option vested and became exercisable on July 15, 2016, and the remaining shares will vest in 12 equal quarterly installments thereafter. 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. 33% of the restricted stock units vested on November 30, 2018, and, subject to accelerated vesting in certain circumstances, the remaining restricted stock units are scheduled to vest 33% on November 30, 2019, and 34% on November 30, 2020, as long as the reporting person remains in the service of Everbridge through the respective vesting date. Not Applicable Represents a grant of performance-based restricted stock units ("PSU") under the Everbridge, Inc. 2016 Equity Incentive Plan. Each PSU represents the contingent right to receive, upon vesting of the unit, one share of Everbridge common stock. Up to sixty-two and one-half percent (62.5%) of the PSUs will become eligible to vest at the end of the fiscal quarter after the second anniversary of the grant date based on the compound annual growth rate ("CAGR") achieved during the eight fiscal quarters preceding the then most recent fiscal quarter, and up to an additional sixty-two and one-half percent (62.5%) of the PSUs will become eligible to vest at the end of the fiscal quarter after the third anniversary of the grant date based on the CAGR achieved during the 12 fiscal quarters preceding the then most recent fiscal quarter. 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 33% on September 30, 2019, 33% on September 30, 2020, and 34% on September 30, 2021, as long as the reporting person remains in the service of Everbridge through the respective vesting date. Sana Shah, Attorney-in-Fact 2019-01-11