Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Class B Convertible Units^F1,F2,F3	—	Nov 5, 2014	J	256,078	A	—	—	Common Units (Limited Partnership Interests)	—	14,889,078	I
Class B Convertible Units^F1,F2,F3	—	Feb 9, 2015	J	260,558	A	—	—	Common Units (Limited Partnership Interests)	—	15,149,636	I
Class B Convertible Units^F1,F2,F3	—	May 8, 2015	J	265,118	A	—	—	Common Units (Limited Partnership Interests)	—	15,414,754	I
Class B Convertible Units^F1,F2,F3	—	Aug 10, 2015	J	269,758	A	—	—	Common Units (Limited Partnership Interests)	—	15,684,512	I

Explanation of responses

F1The 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).
F2The Reporting Persons may be deemed to indirectly beneficially own the Class B Convertible Units owned by Southcross Holdings Borrower LP ("Borrower"), but each Reporting Person disclaims beneficial ownership except to the extent of its pecuniary interest therein.
F3Borrower is owned 100% by Southcross Holdings Guarantor LP ("Guarantor"), and its non-economic general partner interest is held by Southcross Holdings Borrower GP LLC, which is owned 100% by Guarantor. Guarantor is owned 100% by Southcross Holdings LP ("Holdings"), and its non-economic general partner interest is held by Southcross Holdings Guarantor GP LLC, which is owned 100% by Holdings. Southcross Energy LLC ("SELLC") owns 29.2% of Holdings and 29.6% of Southcross Holdings GP LLC, the non-economic general partner of Holdings. Further, Charlesbank Capital Partners, LLC is the investment adviser to and the general partner of the general partner of Charlesbank Equity Fund VI, Limited Partnership and its affiliated investment funds, which hold an approximate 85.2% membership interest in SELLC.

Remarks

This Form 4 is filed jointly by Southcross Energy LLC ("SELLC"), Southcross Energy Partners GP, LLC (the "General Partner"), Charlesbank Capital Partners, LLC ("Charlesbank"), Charlesbank Equity Fund VI GP, Limited Partnership ("Equity VI GP"), Charlesbank Coinvestment Partners, Limited Partnership ("Coinvest") and each of Charlesbank Equity Fund VI, Limited Partnership ("Fund VI"), CB Offshore Equity Fund VI, L.P. ("Offshore VI"), Charlesbank Equity Coinvestment Fund VI, Limited Partnership ("Coinvest VI" and together with Fund VI and Offshore VI, the "Charlesbank Funds") and CB-Southcross Holdings, Inc., of which Offshore VI is the sole shareholder. Equity VI GP is the general partner of each of the Charlesbank Funds and may be deemed to indirectly beneficially own the securities of the Issuer held by the Charlesbank Funds, but disclaims beneficial ownership except to the extent of its pecuniary interest therein. Charlesbank is the general partner of each of Coinvest and Equity VI GP and therefore may be deemed to indirectly beneficially own the securities of the Issuer held thereby, but disclaims beneficial ownership except to the extent of its pecuniary interest therein. Pursuant to an investment and advisory agreement with each of the Charlesbank Funds, Charlesbank has authority to vote securities held by the Charlesbank Funds and to decide which securities to purchase and sell for the Charlesbank Funds. Jon M. Biotti is a Managing Director of Charlesbank, the investment adviser to the Charlesbank Funds and general partner of Coinvest. The Issuer is managed by the board of directors (the "Board") and executive officers of the General Partner, which is indirectly owned by Southcross Holdings LP ("Holdings"). Through Holdings and its general partner, SELLC has the right to elect 2 directors (1 of whom must be independent) to the Board.