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NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

0

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

0

Accession Number:: 0001193125-18-106276
Form Type:: 13D Filing
Publication Date:: 2018-04-03 16:31:55

Filed By:: Harvest Fund Holdco L.p.
Company:: Archrock Partners L.p. (NASDAQ:APLP)
Filing Date:: 2018-04-03
SEC Url:: 13D Filing

Ownership Summary

Please notice the below summary table is generated without human intervention and may contain errors. Please refer to the complete filing displayed below for exact figures.

Name	Sole Voting Power	Shared Voting Power	Sole Dispositive Power	Shared Dispositive Power	Aggregate Amount Owned Power	Percent of Class
Harvest Fund Holdco	0	0	0	0	0	0.0%
Blackstone Harvest Holdco	0	0	0	0	0	0.0%
Blackstone Intermediary Holdco	0	0	0	0	0	0.0%
Blackstone Advisory Partners	0	0	0	0	0	0.0%
Blackstone Advisory Services	0	0	0	0	0	0.0%
Blackstone Holdings I	0	0	0	0	0	0.0%
Blackstone Holdings I II GP Inc	0	0	0	0	0	0.0%
The Blackstone Group	0	0	0	0	0	0.0%
Blackstone Group Management	0	0	0	0	0	0.0%
Stephen A. Schwarzman	0	0	0	0	0	0.0%

Filing

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934*

(Amendment No. 1)

ARCHROCK PARTNERS, L.P.

(Name of Issuer)

Common Units Representing Limited Partner Interests

(Title of Class of Securities)

03957U100

(CUSIP Number)

John G. Finley

c/o The Blackstone Group L.P.

345 Park Avenue

New York, New York 10154

Tel: (212) 583-5000

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 30, 2018

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box: ☐

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 240.13d-7 for other parties to whom copies are to be sent.

*	The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be filed for the purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D


CUSIP No. 03957U100		2


1		NAMES OF REPORTING PERSONS Harvest Fund Holdco L.P.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		3


1		NAMES OF REPORTING PERSONS Blackstone Harvest Holdco L.L.C.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		4


1		NAMES OF REPORTING PERSONS Blackstone Intermediary Holdco L.L.C.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		5


1		NAMES OF REPORTING PERSONS Blackstone Advisory Partners L.P.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		6


1		NAMES OF REPORTING PERSONS Blackstone Advisory Services L.L.C.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		7


1		NAMES OF REPORTING PERSONS Blackstone Holdings I L.P.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		8


1		NAMES OF REPORTING PERSONS Blackstone Holdings I/II GP Inc.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		9


1		NAMES OF REPORTING PERSONS The Blackstone Group L.P.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		10


1		NAMES OF REPORTING PERSONS Blackstone Group Management L.L.C.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION Delaware

SCHEDULE 13D


CUSIP No. 03957U100		11


1		NAMES OF REPORTING PERSONS Stephen A. Schwarzman
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☒
3		SEC USE ONLY
4		SOURCE OF FUNDS (See Instructions) OO
5		CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ☐
6		CITIZENSHIP OR PLACE OF ORGANIZATION United States of America

Explanatory Note

This Amendment No. 1 (Amendment No. 1) to Schedule 13D relates to common units representing limited partner interests (the Common Units) of Archrock Partners, L.P., a Delaware limited partnership (the Issuer), and amends the initial statement on Schedule 13D filed on October 26, 2017 (as amended, the Schedule 13D). Capitalized terms used but not defined in this Amendment No. 1 shall have the same meanings ascribed to them in the Schedule 13D.

Harvest Fund Advisors LLC (HFA), an investment management firm with over $10 billion in assets under management, initially filed a Schedule 13G with respect to the Common Units of the Issuer pursuant to Rule 13d-1(b) under the Securities Exchange Act of 1934, as amended, on February 5, 2016. On October 16, 2017, a subsidiary of The Blackstone Group L.P. acquired HFA. In connection with that acquisition, The Blackstone Group L.P. and certain of its affiliates (the Blackstone Reporting Persons) may have been deemed to have become the beneficial owner of the securities beneficially owned by HFA at such time, including the securities of the Issuer, and HFA and the Blackstone Reporting Persons together reported beneficial ownership of such securities on a Schedule 13D.

As of March 30, 2018, the business comprising HFA (the HFA Business) will calculate and report beneficial ownership over securities separately from the rest of The Blackstone Group L.P. and its affiliates other than those comprising the HFA Business (Blackstone), in accordance with Securities and Exchange Commission Release No. 34-39538 (the Release). As a result of the foregoing, and as reflected in this Amendment, the Blackstone Reporting Persons ceased to be beneficial owners of more than 5% of the securities of the Issuer on March 30, 2018. The securities of the Issuer beneficially owned by the HFA Business are being separately reported on a Schedule 13G, which filing will not reflect securities, if any, beneficially owned by Blackstone, whose ownership has been disaggregated from that of the HFA Business in accordance with the Release.

Item 2. Identity and Background

Item 2 of the Schedule 13D is hereby amended to reflect the removal of HFA as a Reporting Person on this Schedule 13D as described in the Explanatory Note above.

Item 5. Interest in Securities of the Issuer.

Item 5 of the Schedule 13D is hereby amended and restated as follows:

(a) and (b). None of the Reporting Persons beneficially owns any Common Units as of March 30, 2018.

(c) Except as set forth in Schedule 1 of this Schedule 13D (which reflects transactions prior to the disaggregation of the HFA Business from the rest of Blackstone as of March 30, 2018), as of March 30, 2018, none of the Reporting Persons has effected any transaction in the past 60 days in Common Units.

(d) Not applicable.

(e) Upon the disaggregation of the HFA Business from the rest of Blackstone as of March 30, 2018, the Reporting Persons ceased to beneficially own more than five percent of the outstanding Common Units.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is hereby supplemented by the following:

As of the date hereof, the Reporting Persons no longer beneficially own any debt securities of the Issuer.

SIGNATURES

After reasonable inquiry and to the best of its or his knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: April 3, 2018


HARVEST FUND HOLDCO L.P.
By: Blackstone Harvest Holdco L.L.C., its General Partner

By:		/s/ Marisa Beeney
Name:		Marisa Beeney
Title:		Authorized Person

BLACKSTONE HARVEST HOLDCO L.L.C.
By: Blackstone Intermediary Holdco L.L.C., its Sole Member
By: Blackstone Advisory Partners L.P., its Sole Member
By: Blackstone Advisory Services L.L.C., its General Partner
By: Blackstone Holdings I L.P., its Sole Member
By: Blackstone Holdings I/II GP Inc., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

BLACKSTONE INTERMEDIARY HOLDCO L.L.C.
By: Blackstone Advisory Partners L.P., its Sole Member
By: Blackstone Advisory Services L.L.C., its General Partner
By: Blackstone Holdings I L.P., its Sole Member
By: Blackstone Holdings I/II GP Inc., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

BLACKSTONE ADVISORY PARTNERS L.P.
By: Blackstone Advisory Services L.L.C., its General Partner
By: Blackstone Holdings I L.P., its Sole Member
By: Blackstone Holdings I/II GP Inc., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

[Archrock Partners, L.P. Schedule 13D/A]


BLACKSTONE ADVISORY SERVICES L.L.C.
By: Blackstone Holdings I L.P., its Sole Member
By: Blackstone Holdings I/II GP Inc., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

BLACKSTONE HOLDINGS I L.P.
By: Blackstone Holdings I/II GP Inc., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

BLACKSTONE HOLDINGS I/II GP INC.

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

THE BLACKSTONE GROUP L.P.
By: Blackstone Group Management L.L.C., its General Partner

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

BLACKSTONE GROUP MANAGEMENT L.L.C.

By:		/s/ John G. Finley
Name:		John G. Finley
Title:		Chief Legal Officer

/s/ Stephen A. Schwarzman
Stephen A. Schwarzman

[Archrock Partners, L.P. Schedule 13D/A]

SCHEDULE 1

As of March 30, 2018, the below reflects the transactions in Common Units effected by the Reporting Persons during the past 60 days. All transactions occurred in the open market.


Date	Common Units Purchase/(Sold)			Weighted Average Trading Price per Common Unit		Seller/Purchaser
2/7/2018		2,270		$	13.2289	Harvest Fund Advisors LLC*
2/9/2018		(50,000	)	$	12.2590	Harvest Fund Advisors LLC*
2/26/2018		4,479		$	13.8150	Harvest Fund Advisors LLC*
2/26/2018		(4,479	)	$	13.8150	Harvest Fund Advisors LLC*
2/27/2018		11,569		$	14.0100	Harvest Fund Advisors LLC*
2/27/2018		(11,569	)	$	14.0100	Harvest Fund Advisors LLC*
3/1/2018		2,938		$	13.4301	Harvest Fund Advisors LLC*
3/8/2018		(3,938	)	$	12.6403	Harvest Fund Advisors LLC*
3/15/2018		(500	)	$	13.0053	Harvest Fund Advisors LLC*
3/16/2018		370		$	12.7500	Harvest Fund Advisors LLC*
3/16/2018		(370	)	$	12.7500	Harvest Fund Advisors LLC*
3/21/2018		192,000		$	12.5000	Harvest Fund Advisors LLC*
3/26/2018		10,940		$	12.3900	Harvest Fund Advisors LLC*
3/26/2018		(10,940	)	$	12.3900	Harvest Fund Advisors LLC*
3/28/2018		7,600		$	12.1608	Harvest Fund Advisors LLC*
3/29/2018		2,879		$	12.2261	Harvest Fund Advisors LLC*

*	Reflects transactions in the Common Units effected by Harvest Fund Advisors LLC on behalf of the funds and accounts it manages on or prior to the disaggregation of the HFA Business from the rest of Blackstone as of March 30, 2018.