Sec Form 4 Filing - Neary James @ WEX Inc. - 2017-11-15

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 Neary James 2. Issuer Name and Ticker or Trading Symbol WEX Inc. [ WEX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O WARBURG PINCUS LLC, 450 LEXINGTON AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 11/15/2017 (Street) NEW YORK, NY10017 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, $0.01 par value per share ("Common Stock") 11/15/2017 S( 1 ) 177,207 D ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) $ 120 0 I ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) See explanation of responses.

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 ("RSUs") $ 0 05/12/2017 A 1,598 ( 7 ) ( 7 ) Common Stock 1,598 $ 0 1,598 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Neary James C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK, NY10017 X Signatures /s/ James Neary 11/16/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 is being filed in connection with the sale of shares (the "Sale") of Common Stock of WEX Inc. (the "Issuer") by Mustang HoldCo II LLC ("Mustang Holdco II"). ( 2 )The unitholders of Mustang Holdco II are Warburg Pincus Private Equity (Lexington) XI - A, L.P. ("WP XI Lexington-A"), WP (Lexington) Holdings II, L.P. ("WP Lexington II"), Warburg Pincus XI (Lexington) Partners - A, L.P. ("WP XI Lexington Partners-A"), Warburg Pincus XI (E&P) Partners - B, L.P. ("WP XI E&P Partners-B"), WP Mustang Co-Invest LLC ("WP Co-Invest LLC"), WP Mustang Co-Invest-B L.P. ("WP Co-Invest-B"), and WP Mustang Co-Invest-C L.P. ("WP Co-Invest-C"). ( 3 )WP Lexington II is the managing member of Mustang Holdco II. Warburg Pincus (E&P) XI, L.P. ("WP E&P XI GP") is (i) the general partner of WP XI Lexington-A, WP Lexington II, WP XI Lexington Partners-A, and WP XI E&P Partners-B, and (ii) the managing member of WP Co-Invest LLC. Warburg Pincus (E&P) XI LLC ("WP E&P XI LLC") is the general partner of WP E&P XI GP. Warburg Pincus Partners (E&P) XI LLC ("WPP E&P XI") is the sole member of WP E&P XI LLC. Warburg Pincus Partners II (US), L.P. ("WP Partners II US") is the managing member of WPP E&P XI. Warburg Pincus & Company US, LLC ("WP & Company US") is the general partner of WP Partners II US. Warburg Pincus LLC ("WP LLC") is the manager of WP XI Lexington-A, WP Lexington II, WP XI Lexington Partners-A, and WP XI E&P Partners-B. ( 4 )Warburg Pincus (Bermuda) XI, Ltd. ("WP Bermuda XI") is the general partner of WP Co-Invest-B and WP Co-Invest-C. Warburg Pincus Partners II (Cayman), L.P. ("WPP II Cayman") is the sole shareholder of WP Bermuda XI. Warburg Pincus (Bermuda) Private Equity GP Ltd. is the general partner of WPP II Cayman ( 5 )James C. Neary, the reporting person, became a director of the Issuer on July 5, 2016 and is a Member of WP & Company US and a Managing Director and Member of WP LLC. As such, prior to the date of the Sale, Mr. Neary may have been deemed to have an indirect pecuniary interest (within the meaning of Rule 16a-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act") in an indeterminate portion of the securities reported as beneficially owned by Mustang Holdco II. Mr. Neary disclaimed beneficial ownership of such securities, except to the extent of any direct pecuniary interest therein. Following the Sale, Mustang Holdco II does not beneficially own any securities of the Issuer. Mr. Neary does not directly own any shares of Common Stock in the Issuer as of the date of this filing. ( 6 )As of the date of this filing, except with respect to the RSUs reported as directly owned by Mr. Neary as described above in Table II, this Form 4 shall not be deemed an admission that any reporting person or any other person referred to herein is a beneficial owner of any securities of the Issuer for purposes of Section 16 of the Exchange Act, or for any other purpose, or that any reporting person, or other person has an obligation to file this Form 4. ( 7 )As previously reported, on May 12, 2017, Mr. James C. Neary was granted 1,598 restricted stock units ("RSUs"), which will vest in total on May 12, 2018.

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).

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