X0306 4 2018-02-09 0 0001547638 Southcross Energy Partners, L.P. SXE 0001616242 Southcross Holdings LP C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 1 0 1 0 See Remarks 0001616245 Southcross Holdings GP, LLC C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 1 0 1 0 See Remarks 0001681944 Southcross Holdings Intermediary LLC C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 0 0 1 0 See Remarks 0001616243 Southcross Holdings Guarantor LP C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 0 0 1 0 See Remarks 0001616246 Southcross Holdings Guarantor GP LLC C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 0 0 1 0 See Remarks 0001616244 Southcross Holdings Borrower LP C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 0 0 1 0 See Remarks 0001616247 Southcross Holdings Borrower GP LLC C/O SOUTHCROSS ENERGY PARTNERS, L.P. 1717 MAIN STREET, SUITE 5200 DALLAS TX 75201 0 0 1 0 See Remarks Class B Convertible Units 2018-02-09 4 J 0 320890 A Common Units (Limited Partnership Interests) 18656071 I By Southcross Holdings Borrower LP The Class B Convertible Units were acquired 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). The Class B Convertible Units are owned directly by Southcross Holdings Borrower LP, which is owned 100% by Southcross Holdings Guarantor LP ("Guarantor"), and its non-economic general partner interest is held by Southcross Holdings Borrower GP LLC ("Borrower GP"), which is owned 100% by Guarantor. Guarantor is owned 99.8% by Southcross Holdings LP ("Holdings"), and its 0.2% general partner interest is held by Southcross Holdings Guarantor GP LLC ("Guarantor GP"), which is owned 99% by Holdings and 1% by Southcross Holdings Intermediary LLC ("Intermediary"), which is owned 100% by Holdings. The non-economic general partner interest of Holdings is held by Southcross Holdings GP LLC ("Holdings GP"). Borrower GP, Guarantor, Guarantor GP, Intermediary, Holdings, and Holdings GP are indirect beneficial owners of the reported securities. This Form 4 is filed jointly by Southcross Holdings LP, Southcross Holdings GP LLC, Southcross Holdings Intermediary LLC, Southcross Holdings Guarantor LP, Southcross Holdings Guarantor GP LLC, Southcross Holdings Borrower LP, and Southcross Holdings Borrower GP LLC. /s/ Bruce Williamson, Chief Executive Officer of the General Partner of Southcross Holdings LP 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of Southcross Holdings GP LLC 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of Southcross Holdings Intermediary LLC 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of the General Partner of Southcross Holdings Guarantor LP 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of Southcross Holdings Guarantor GP LLC 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of the General Partner of Southcross Holdings Borrower LP 2018-02-09 /s/ Bruce Williamson, Chief Executive Officer of Southcross Holdings Borrower GP LLC 2018-02-09