SEC Form 4

FORM 4		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 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* TW Southcross Aggregator LP (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Southcross Energy Partners, L.P. [ SXE ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/13/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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
Class B Convertible Units	(1)	08/13/2018		J(1)		332,220		(1)	(1)	Common Units (Limited Partnership Interests)	(1)	(1)	19,314,797	I	By Southcross Holdings Borrower LP

1. Name and Address of Reporting Person* TW Southcross Aggregator LP (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TW/LM GP Sub, LLC (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TAILWATER ENERGY FUND I, LP (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TW GP EF-1, LP (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TW GP EF-1 GP, LLC (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* TW GP Holdings, LLC (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Tailwater Holdings, LP (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Tailwater Capital LLC (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Downie Jason H (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Herring Edward (Last) (First) (Middle) 2021 MCKINNEY AVE. SUITE 1250 (Street) DALLAS TX 75201 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. The Class B Convertible Units were acquired by Southcross Holdings Borrower LP ("Borrower") as a payment-in-kind distribution on outstanding Class B Convertible Units pursuant to the Issuer's Third Amended and Restated Agreement of Limited Partnership dated August 4, 2014 (the "Partnership Agreement"). The Class B Convertible Units convert into Common Units at the Class B Conversion Rate (as defined in the Partnership Agreement) on the Class B Conversion Date (as defined in the Partnership Agreement).

Remarks:

See Exhibit 99.1

	TW Southcross Aggregator LP, a Delaware limited partnership By: TW/LM GP Sub, LLC, its General Partner By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	TW/LM GP Sub. LLC, a Texas limited liability company By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	Tailwater Energy Fund I, LP, a Delaware limited partnership By: TW GP EF-I, LP, its General Partner By: TW GP EF-I GP, LLC, its General Partner By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	TW GP EF-I, LP, a Delaware limited partnership By: TW GP EF-I GP, LLC, its General Partner By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	TW GP EF-I GP, LLC, a Texas limited liability company By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	TAILWATER HOLDINGS, LP, a Delaware limited partnership By: TW GP Holdings, LLC, its General Partner By: /s/ Brian Blakeman, Vice President	08/14/2018
	TW GP HOLDINGS, LLC, a Texas limited liability company By: /s/ Brian Blakeman, Vice President	08/14/2018
	TAILWATER CAPITAL LLC, a Texas limited liability company By: /s/ Brian Blakeman, Vice President Tax & Finance	08/14/2018
	/s/ Jason H. Downie	08/14/2018
	/s/ Edward Herring	08/14/2018
	** Signature of Reporting Person	Date
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