13D Filing: Magnolia Infrastructure Holdings, LLC and American Midstream Partners LP (AMID)

Note 1: Represents 7,376,568 Series A-1 Convertible Preferred Units (Series A-1 Units) held by High Point
Infrastructure Partners, LLC (High Point), convertible into 8,227,824 common units of the Issuer (Common Units), which are indirectly owned by Magnolia Infrastructure Partners, LLC (Magnolia),
3,160,347 Series A-2 Convertible Preferred Units (Series A-2 Units) held by Magnolia, convertible into 3,525,051 Common Units, 1,349,609 Common Units held by American Midstream GP, LLC, which is approximately 77% owned by High
Point and approximately 23% owned by AMID GP Holdings, LLC, a wholly owned subsidiary of Magnolia Infrastructure Holdings, LLC (Magnolia Holdings), and 618,921 Common Units held by Magnolia, taking into account the transactions
discussed in Item 3.

Note 2: Based on 63,512,662 Common Units outstanding, on an as-converted basis, which equals the sum of (a) 51,759,787 Common Units
outstanding as of August 3, 2017, (b) 8,227,824 Common Units issuable upon the conversion of Series A-1 Units outstanding and (c) 3,525,051 Common Units issuable upon the conversion of Series A-2 Units outstanding.

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