WEXFORD CAPITAL LP sold TUSK

Footnotes

Represents a pro rata, in-kind distribution by MEH SUB LLC ("MEH") to a member of MEH that does not involve (i) a purchase or a sale of securities or (ii) any additional consideration.; Represents the common stock of the Issuer held in the aggregate by Wexford Spectrum Trading Limited ("WST"), Wexford Catalyst Trading Limited ("WCT"), Wexford Focused Trading Limited ("WFT") and MEH (together with WST, WCT and WFT, the "Wexford Entities").; Wexford Capital LP ("Wexford Capital") may, by reason of its status as (i) sub-advisor of each of WST and WCT, (ii) investment manager of WFT and (iii) manager of MEH, be deemed to own beneficially the securities held by the Wexford Entities. Wexford GP LLC ("Wexford GP") may, as the General Partner of Wexford Capital, be deemed to own beneficially the securities held by the Wexford Entities. Each of Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs", and together with the Wexford Entities, Wexford Capital, Wexford GP and Davidson, the "Reporting Persons") may, by reason of his status as a controlling person of Wexford GP, be deemed to own beneficially the securities held by the Wexford Entities.; Each of Wexford Capital, Wexford GP, Davidson and Jacobs share the power to vote and to dispose of the securities held by the Wexford Entities. Each of Wexford Capital, Wexford GP, Davidson and Jacobs disclaim beneficial ownership of the securities held by the Wexford Entities and this report shall not be deemed as an admission that they are the beneficial owners of such securities, except to the extent of any pecuniary interests therein. The Reporting Persons may be deemed to be directors by deputization by virtue of Paul Jacobi, an employee of Wexford Capital, serving as a director of the Issuer.