Sec Form 4 Filing - Kimball Jennifer @ WEX Inc. - 2023-03-15

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 Kimball Jennifer 2. Issuer Name and Ticker or Trading Symbol WEX Inc. [ WEX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Accounting Officer (Last) (First) (Middle) 1 HANCOCK STREET 3. Date of Earliest Transaction (MM/DD/YY) 03/15/2023 (Street) PORTLAND, ME04101 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 03/15/2023 M 81 A $ 0 81 D Common Stock 03/15/2023 F( 1 ) 24 D $ 176.84 57 D Common Stock 03/15/2023 M 163 A $ 0 220 D Common Stock 03/15/2023 F( 1 ) 48 D $ 176.84 172 D Common Stock 03/15/2023 M 714 A $ 0 886 D Common Stock 03/15/2023 F( 1 ) 210 D $ 176.84 676 D Common Stock 03/16/2023 M 305 A $ 0 981 D Common Stock 03/16/2023 F( 2 ) 90 D $ 173.56 891 D Common Stock 03/16/2023 M 92 A $ 0 983 D Common Stock 03/16/2023 F( 2 ) 28 D $ 173.56 955 D Common Stock 03/16/2023 M 99 A $ 0 1,054 D Common Stock 03/16/2023 F( 2 ) 30 D $ 173.56 1,024 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 Units $ 0 03/15/2023 M 81 ( 3 ) ( 3 ) Common Stock 81 $ 0 82 D Restricted Stock Units $ 0 03/15/2023 M 163 ( 3 ) ( 3 ) Common Stock 163 $ 0 328 D Restricted Stock Units $ 0 03/15/2023 M 714 ( 3 ) ( 3 ) Common Stock 714 $ 0 1,431 D Restricted Stock Units $ 0 03/16/2023 M 305 ( 4 ) ( 4 ) Common Stock 305 $ 0 0 D Restricted Stock Units $ 0 03/16/2023 M 92 ( 4 ) ( 4 ) Common Stock 92 $ 0 0 D Restricted Stock Units $ 0 03/16/2023 M 99 ( 4 ) ( 4 ) Common Stock 99 $ 0 0 D Restricted Stock Units $ 0 03/15/2023 A 461 ( 5 ) ( 5 ) Common Stock 461 $ 0 461 D Restricted Stock Units $ 0 03/15/2023 A 289 ( 6 ) ( 6 ) Common Stock 289 $ 0 289 D Stock Option (right to buy) $ 173.56 03/15/2023 A 980 ( 7 ) 03/15/2033 Common Stock 980 $ 0 980 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Kimball Jennifer 1 HANCOCK STREET PORTLAND, ME04101 Chief Accounting Officer Signatures /s/ Hilary Rapkin, as attorney-in-fact for Jennifer Kimball 03/17/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents tax withholding in connection with the vesting of the Restricted Stock Units ("RSUs") on March 15, 2023. ( 2 )Represents tax withholding in connection with the vesting of the Restricted Stock Units ("RSUs") on March 16, 2023. ( 3 )Restricted Stock Units vested on March 15, 2023 and each RSU converted into one share of common stock. ( 4 )Restricted Stock Units vested on March 16, 2023 and each RSU converted into one share of common stock. ( 5 )Restricted Stock Units ("RSUs") vest with respect to one-third of these shares on each one year anniversary of this grant. ( 6 )RSUs vest with respect to all of these shares on the one year anniversary of this grant. ( 7 )This stock option will vest with respect to one-third of these shares on each one year anniversary of this grant.

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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