Sec Form 4 Filing - Brickley Patrick @ EVERBRIDGE, INC. - 2023-05-31

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Brickley Patrick 2. Issuer Name and Ticker or Trading Symbol EVERBRIDGE, INC. [ EVBG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP and CFO (Last) (First) (Middle) C/O EVERBRIDGE, INC., 25 CORPORATE DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 05/31/2023 (Street) BURLINGTON, MA01803 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/31/2023 M 2,253 A 98,194 ( 2 ) D Common Stock 06/01/2023 S 1,008 ( 3 ) D $ 23.8737 97,186 ( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Unit ( 1 ) 05/31/2023 M 2,253 ( 4 ) ( 5 ) Common Stock 2,253 $ 0 24,782 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Brickley Patrick C/O EVERBRIDGE, INC. 25 CORPORATE DRIVE BURLINGTON, MA01803 EVP and CFO Signatures Noah F. Webster, Attorney-in-Fact 06/02/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Restricted stock units convert into common stock on a one-for-one basis. ( 2 )The Reporting Person previously reported the February 15, 2023 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 27,035 unvested RSUs subject to the Award. ( 3 )Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of RSUs. ( 4 )On February 15, 2023, the reporting person was granted restricted stock units (RSUs). The first installment of the RSUs vested on May 31, 2023. The remaining RSUs will vest in equal installments over twelve calendar quarters, provided, however, as long as the reporting person remains in the service of Everbridge through the respective vesting date. ( 5 )Not applicable.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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