McMullen William Wallace bought MNR

Footnotes

These common units were purchased by BCE-Mach Aggregator LLC ("BCE Aggregator").; The price reported in Column 4 is a weighted average price. These common units were purchased by BCE Aggregator in multiple transactions at prices ranging from $12.44 to $12.67, inclusive. The Reporting Persons undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote (2) to this Form 4.; After the reported transactions, the reported common units are directly held 74,835,939 by BCE Aggregator and 14,693 by Bayou City Energy Management LLC ("BCEM"). BCE Aggregator is indirectly managed by BCEM. William W. McMullen is the Managing Partner of BCEM. Accordingly, each of the Reporting Persons may be deemed to beneficially own the securities directly held by BCE Aggregator and BCEM, as applicable, but disclaim beneficial ownership of such common units except to the extent of their respective pecuniary interest therein.