Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series A-1 Convertible Preferred Units^F2,F1	—	Aug 14, 2017	J	95,701	A	—	—	Common Units (limited partner interests)	106,745	7,376,568	I
Series A-2 Convertible Preferred Units^F4,F3	—	Aug 14, 2017	J	41,001	A	—	—	Common Units (limited partner interests)	45,733	3,160,347	I

Explanation of responses

F1Represents Series A-1 Convertible Preferred Units (the "Series A-1 Units") held directly by High Point Infrastructure Partners, LLC ("HPIP") received on a quarterly basis as payment-in-kind in lieu of cash distributions on the Series A-1 Units owned on the distribution record date. The Series A-1 Units have no expiration date and are convertible in whole or in part into common units of American Midstream Partners, LP (the "Issuer") ("Common Units") at a conversion ratio of 1:1.1154 at any time.
F2Represents the aggregate number of Series A-1 Units held after the acquisition of Series A-1 Units reported in Column 5 of this line item.
F3Represents Series A-2 Convertible Preferred Units (the "Series A-2 Units") held by Magnolia Infrastructure Partners, LLC ("Magnolia") received on a quarterly basis as payment-in-kind in lieu of cash distributions on the Series A-2 Units owned on the distribution record date. The Series A-2 Units have no expiration date and are convertible into Common Units at a conversion ratio of 1:1.1154 at any time.
F4Represents the aggregate number of Series A-2 Units held after the acquisition of Series A-2 Units reported in Column 5 of this line item.

Remarks

(A) This Form 4 is amended to include AMID GP Holdings, LLC ("AMID GP Holdings") a wholly owned subsidiary of Magnolia Infrastructure Partners, LLC ("Magnolia Holdings"), as a reporting person following receipt of its filing codes and to correct inadvertent errors in the signature blocks. (B) ArcLight Capital Holdings, LLC ("ArcLight Holdings") is the sole manager and member of ArcLight Capital Parnters, LLC ("ArcLight Partners" and, together with ArcLight Holdings and ArcLight Energy Partners Fund V, L.P. ("Fund V"), the "ArcLight Entities"). ArcLight Partners is the investment adviser to Fund V. ArcLight Holdings is the manager of the general partner of Fund V. Mr. Revers is a manager of ArcLight Holdings, and a managing partner of ArcLight Partners and has certain voting and dispositive rights as a member of ArcLight Partners' investment committee. Fund V directly owns Busbar II, LLC ("Busbar") and Magnolia Holdings, which owns Magnolia. Fund V, through Magnolia, also owns approximately 90% of the ownership interest in HPIP. HPIP and AMID GP Holdings, own respectively, approximately 77% and approximately 23% of American Midstream GP, LLC, (the "General Partner"), the general partner of the Issuer. As a result, the ArcLight Entities and Mr. Revers may be deemed to indirectly beneficially own the securities of the Issuer held by Magnolia Holdings, Busbar, Magnolia, HPIP and the General Partner, but disclaim beneficial ownership except to the extent of their respective pecuniary interests therein. (C) Some of the entity names in the signature blocks have been abbreviated due to the limitations of the electronic filing system. Please refer to the text above for the complete legal names of such entities.