13D Filing: Metalmark Capital II LLC and Jones Energy Inc. (JONE)

In addition to the beneficial ownership of the Reporting Persons described herein, by virtue of
the Stockholders Agreement filed with the Initial Schedule 13D, as amended on May 2, 2017, and incorporated herein by reference, each of the Reporting Persons, together with the Jones Family Entities, may be deemed to be a member of a
group under Section 13(d) of the Act, which may be deemed to beneficially own, have shared power to vote or direct the vote over and have shared dispositive power over 11,668,210 shares of Class A Common Stock beneficially
owned by the Jones Family Entities, as reported in the Jones Family Entities Statement on Schedule 13D filed on May 9, 2014, as amended. The Reporting Persons disclaim beneficial ownership of the Class A Common Stock beneficially
owned by the Jones Family Entities.

The information set forth in Items 7 through 11 of the cover pages hereto are incorporated herein by
reference. Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission by any of the Reporting Persons that it is the beneficial owner of any of the Class A Common Stock referred to herein for the
purposes of Section 13(d) of the Act or for any other purpose, and such beneficial ownership is expressly disclaimed by each Reporting Person except to the extent of such Reporting Persons pecuniary interest, if any, in the Class A
Common Stock.

(c) Except as set forth in this Schedule 13D, none of the Reporting Persons has effected any transactions in Common Units in
the past 60 days.

(d) No other person is known by the Reporting Persons to have the right to receive or the power to direct the receipt of
dividends from, or the proceeds from the sale of, the Class A Common Stock that may be deemed to be beneficially owned by the Reporting Persons as provided for herein.

(e) Not applicable.

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