X0508 4 2023-09-01 0 0001437352 EVERBRIDGE, INC. EVBG 0001961022 Barney Bryan Reed 25 CORPORATE DRIVE BURLINGTON MA 01803 0 1 0 0 Chief Product Officer 0 Common Stock 2023-09-01 4 P 0 730 20.893 A 730 D The Reporting Person previously reported the December 30, 2022 restricted stock unit ("RSU") award (the "Award") in Table I. The Reporting Person decided to change how the Award is reported by listing it in it Table II instead of Table I. This total excludes the 100,000 unvested RSUs subject to the Award. /s/ Noah F. Webster, Attorney-in-Fact 2023-09-05