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Filing Details

Accession Number:: 0001193125-18-094188
Form Type:: 13D Filing
Publication Date:: 2018-03-23 16:31:03

Filed By:: Harvest Fund Advisors Llc
Company:: Westlake Chemical Partners Lp (NYSE:WLKP)
Filing Date:: 2018-03-23
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	Sole Dispositive Power	Aggregate Amount Owned Power	Percent of Class
Harvest Fund Advisors	2,899,223	2,899,223	2,899,223	9.0%
Harvest Fund Holdco	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Harvest Holdco	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Intermediary Holdco	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Advisory Partners	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Advisory Services	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Holdings I	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Holdings I II GP Inc	2,899,223	2,899,223	2,899,223	9.0%
The Blackstone Group	2,899,223	2,899,223	2,899,223	9.0%
Blackstone Group Management	2,899,223	2,899,223	2,899,223	9.0%
Stephen A. Schwarzman	2,899,223	2,899,223	2,899,223	9.0%

Filing

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934*

(Amendment No. 1)

WESTLAKE CHEMICAL PARTNERS LP

(Name of Issuer)

Common Units Representing Limited Partner Interests

(Title of Class of Securities)

960417103

(CUSIP Number)

Anthony Merhige

Harvest Fund Advisors LLC

100 West Lancaster Avenue, Suite 200

Wayne, Pennsylvania 19087

Tel: (610) 341-9700

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

March 19, 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. 960417103		2


1	NAMES OF REPORTING PERSONS Harvest Fund Advisors LLC
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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) IA

SCHEDULE 13D


CUSIP No. 960417103		3


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) PN

SCHEDULE 13D


CUSIP No. 960417103		4


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) OO

SCHEDULE 13D


CUSIP No. 960417103		5


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) OO

SCHEDULE 13D


CUSIP No. 960417103		6


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) PN

SCHEDULE 13D


CUSIP No. 960417103		7


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) OO

SCHEDULE 13D


CUSIP No. 960417103		8


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) PN

SCHEDULE 13D


CUSIP No. 960417103		9


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) CO

SCHEDULE 13D


CUSIP No. 960417103		10


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) PN

SCHEDULE 13D


CUSIP No. 960417103		11


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) OO

SCHEDULE 13D


CUSIP No. 960417103		12


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
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER 2,899,223
		8	SHARED VOTING POWER 0
		9	SOLE DISPOSITIVE POWER 2,899,223
		10	SHARED DISPOSITIVE POWER 0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,899,223
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) ☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 9.0%
14	TYPE OF REPORTING PERSON (See Instructions) IN

Explanatory Note

This Amendment No. 1 (Amendment No. 1) to Schedule 13D relates to common units representing limited partner interests (the Common Units) of Westlake Chemical Partners LP, a Delaware limited partnership (the Issuer), and amends the initial statement on Schedule 13D filed on October 26, 2017 (the Original Schedule 13D, and 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.

Item 3. Source and Amount of Funds or Other Consideration

Item 3 of the Schedule 13D is hereby supplemented by adding the following:

As of March 20, 2018, the funds and accounts managed by Harvest Fund Advisors LLC (HFA) acquired the securities reported herein for aggregate consideration of approximately $66.4 million, using cash available in such funds and accounts.

Item 5. Interest in Securities of the Issuer.

Items 5(a)-(b) of the Schedule 13D are hereby amended and restated as follows:

(a) and (b). Calculations of the percentage of Common Units beneficially owned assumes that there are a total of 32,237,266 Common Units outstanding as of February 22, 2018, as reported in the Issuers Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 1, 2018.

The aggregate number and percentage of Common Units beneficially owned by each Reporting Person and, for each Reporting Person, the number of Common Units as to which there is sole power to vote or to direct the vote, shared power to vote or to direct the vote, sole power to dispose or to direct the disposition, or shared power to dispose or to direct the disposition are set forth on rows 7 through 11 and row 13 of the cover pages of this Schedule 13D and are incorporated herein by reference.

The amounts reported herein reflect the number of Common Units held by funds and accounts managed by HFA as of March 20, 2018. None of the Blackstone Persons directly owns any Common Units.

Harvest Fund Holdco L.P. is the sole member of HFA. Blackstone Harvest Holdco L.L.C. is the general partner of Harvest Fund Holdco L.P. Blackstone Intermediary Holdco L.L.C. is the sole member of Blackstone Harvest Holdco L.L.C. Blackstone Advisory Partners L.P. is the sole member of Blackstone Intermediary Holdco L.L.C. Blackstone Advisory Services L.L.C. is the general partner of Blackstone Advisory Partners L.P. Blackstone Holdings I L.P. is the sole member of Blackstone Advisory Services L.L.C. Blackstone Holdings I/II GP Inc. is the general partner of Blackstone Holdings I L.P. The Blackstone Group L.P. is the controlling shareholder of Blackstone Holdings I/II GP Inc. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is wholly-owned by Blackstones senior managing directors and controlled by its founder, Stephen A. Schwarzman.

HFA, an investment adviser registered under the Investment Advisers Act of 1940, as amended, advises funds and accounts. In such capacity, HFA has voting authority and dispositive discretion over the securities of the Issuer described in this Schedule 13D that are owned by the funds and accounts advised by it. Except for the purpose of determining beneficial ownership under Section 13(d) of the Securities Exchange Act of 1934, as amended (the Exchange Act), HFA and the other Reporting Persons each disclaims beneficial ownership of all securities reported as beneficially owned by HFA in this Schedule 13D. None of the Reporting Persons has any pecuniary interest in the securities reported as beneficially owned by HFA in this Schedule 13D, as such term is used for purposes of Section 16 of the Exchange Act. Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission that any of the Reporting Persons is the beneficial owner of the securities referred to herein for purposes of Section 13(d) or Section 16 of the Exchange Act or for any other purpose.

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

(c) Except as set forth in Schedule 1 of this Amendment No. 1, none of the Reporting Persons has effected any transaction in Common Units in the 60 days prior to this filing.

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

Item 6 of the Schedule 13D is hereby amended and restated as follows:

As of March 20, 2018, an account managed by HFA has entered into notional principal amount derivative agreements (the Derivative Agreements) in the form of cash settled swaps with respect to 409,995 Common Units (representing economic exposure to approximately 1.3% of the Common Units). The Derivative Agreements provide such holder with economic results that are comparable to the economic results of ownership but do not provide it with the power to vote or direct the voting or dispose of or direct the disposition of the Common Units that are the subject of the Derivative Agreements (such units, the Subject Units). The Reporting Persons disclaim beneficial ownership in the Subject Units. The counterparties to the Derivative Agreements are unaffiliated third party financial institutions.

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: March 23, 2018


				HARVEST FUND ADVISORS LLC

				By: /s/ Anthony Merhige
				Name: Anthony Merhige
				Title: Senior Managing Director

				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

[Westlake Chemical Partners LP 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

[Westlake Chemical Partners LP Schedule 13D/A]

SCHEDULE 1

As of March 20, 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 Purchased/(Sold)			Weighted Average Trading Price per Common Unit		Seller/Purchaser
1/19/2018		(2,500.00	)	$	24.4250	Harvest Fund Advisors LLC*
1/22/2018		(8,700.00	)	$	24.6506	Harvest Fund Advisors LLC*
1/23/2018		2,545.00		$	24.6250	Harvest Fund Advisors LLC*
1/23/2018		5,833.00		$	24.6500	Harvest Fund Advisors LLC*
1/23/2018		(2,545.00	)	$	24.6250	Harvest Fund Advisors LLC*
1/23/2018		(5,833.00	)	$	24.6500	Harvest Fund Advisors LLC*
1/24/2018		(200.00	)	$	24.6500	Harvest Fund Advisors LLC*
1/25/2018		(6,600.00	)	$	24.6061	Harvest Fund Advisors LLC*
1/30/2018		(15,459.00	)	$	24.0023	Harvest Fund Advisors LLC*
2/1/2018		(10,700.00	)	$	24.3000	Harvest Fund Advisors LLC*
2/15/2018		(827.00	)	$	23.5060	Harvest Fund Advisors LLC*
2/26/2018		2,814.00		$	23.5500	Harvest Fund Advisors LLC*
2/26/2018		(2,814.00	)	$	23.5500	Harvest Fund Advisors LLC*
2/27/2018		8,210.00		$	23.9000	Harvest Fund Advisors LLC*
2/27/2018		(8,210.00	)	$	23.9000	Harvest Fund Advisors LLC*
3/2/2018		(3,025.00	)	$	22.9215	Harvest Fund Advisors LLC*
3/5/2018		(28,815.00	)	$	23.0643	Harvest Fund Advisors LLC*
3/6/2018		(29,180.00	)	$	23.2077	Harvest Fund Advisors LLC*
3/7/2018		(900.00	)	$	23.2556	Harvest Fund Advisors LLC*
3/12/2018		(1,200.00	)	$	23.1354	Harvest Fund Advisors LLC*
3/13/2018		(13,500.00	)	$	22.9500	Harvest Fund Advisors LLC*
3/14/2018		(2,665.00	)	$	23.1137	Harvest Fund Advisors LLC*
3/16/2018		128.00		$	22.8750	Harvest Fund Advisors LLC*
3/16/2018		(128.00	)	$	22.8750	Harvest Fund Advisors LLC*
3/19/2018		(13,000.00	)	$	23.2000	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.