Sec Form 4 Filing - Ingersoll Jason @ Archrock Partners, L.P. - 2018-04-26

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 Ingersoll Jason 2. Issuer Name and Ticker or Trading Symbol Archrock Partners, L.P. [ APLP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Senior Vice President (Last) (First) (Middle) 9807 KATY FREEWAY, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 04/26/2018 (Street) HOUSTON, TX77024 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 Units 04/26/2018 D 5,258 D 0 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 Phantom Units with tandem DERs (Common Units) $ 0 ( 2 ) 04/26/2018 D 3,189 ( 2 ) ( 2 ) Common Units 3,189 $ 0 0 D Phantom Units with tandem DERs $ 0 ( 2 ) 04/26/2018 D 4,299 ( 2 ) ( 2 ) Common Units 4,299 $ 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ingersoll Jason 9807 KATY FREEWAY, SUITE 100 HOUSTON, TX77024 Senior Vice President Signatures Susan G. Thompson, Attorney-in-fact 04/27/2018 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the merger of the Issuer into a wholly-owned subsidiary of Archrock, Inc. (the "Merger"), effective April 26, 2018, each common unit of the Issuer held by the reporting person was converted into 1.40 shares of Archrock, Inc. common stock. ( 2 )Pursuant to the Merger, each phantom unit has been cancelled and converted into 1.4 restricted stock units of Archrock, Inc. with substantially similar terms and conditions as the original award; however, the terms of the awards, as well as certain employment-related agreements, have been amended to exclude the Merger from the relevant change of control provisions.

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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