The information contained on this website is only a summary of the information presented in more detail in the Notice of Proposed Settlement of Class Action. Because this website is just a summary, you should review the Notice for additional details.

Summary of the Litigation and Settlement

This website relates to a proposed Settlement reached in a class action lawsuit pending against the following defendants: Riverstone Holdings LLC, Harlan H. Chappelle, Stephen S. Coats, Michael E. Ellis, William D. Gutermuth, James T. Hackett, Pierre F. Lapeyre, Jr., David M. Leuschen, Donald R. Sinclair, Ronald J. Smith, Jeffrey H. Tepper, Thomas J. Walker, Diana J. Walters, Alta Mesa Resources, Inc., ARM Energy Holdings, LLC, Bayou City Energy Management LLC, William McMullen, HPS Investment Partners, LLC, and Donald Dimitrievich.

Subject to Court approval, Class Plaintiffs, on behalf of the Class, have agreed to settle all Released Plaintiffs’ Claims against Defendants and other Settling Defendants’ Releasees in exchange for a settlement payment of $126.3 million in cash. The Net Settlement Fund will be distributed in accordance with a plan of allocation that will be approved by the Court and will determine how the Net Settlement Fund shall be distributed to members of the Class.

This website does not express any opinion by the Court concerning the merits of any claim in the Action, and the Court still has to decide whether to approve the Settlement. On April 30, 2025, the court will hold a Settlement Hearing to consider final approval of the Settlement and related matters.

The proposed global Settlement, if approved by the Court, will apply to the following Class (the “Class”):

1. All persons and entities that held shares of Alta Mesa Resources, Inc. (“Alta Mesa”) f/k/a Silver Run Acquisition Corporation II (“Silver Run II”) common stock (CUSIP 02133L109; ticker “SRUN”), and/or Silver Run II Units (“Silver Run Units”) (CUSIP 82812A202; ticker “SRUNU”) on the January 22, 2018 record date that were entitled to vote on Alta Mesa’s proposed transaction with Alta Mesa Holdings and Kingfisher Midstream (the “Business Combination”);
2. All persons and entities that purchased or otherwise acquired Alta Mesa (Silver Run II) common stock (CUSIP 02133L109; ticker “SRUN”), Alta Mesa (Silver Run II) warrants (CUSIP 02133L117; ticker “SRUNW”), and/or Silver Run II Units (“Silver Run Units”) (CUSIP 82812A202; ticker “SRUNU”) on or after August 16, 2017 and prior to the closing of the Business Combination on February 9, 2018;
   
   and
    
3. All persons and entities that purchased or otherwise acquired Alta Mesa common stock (CUSIP 02133L109; ticker “AMR”) or Alta Mesa warrants (CUSIP 02133L117; ticker “AMRWW”) (other than those automatically converted from Silver Run Units by operation of the Business Combination) between the February 9, 2018 closing of the Business Combination and May 17, 2019 (inclusive).

Excluded from the Class are: (i) Defendants; (ii) the officers and directors of Alta Mesa, Silver Run II, Alta Mesa Holdings, LP (“AMH”), Kingfisher Midstream, LLC (“KFM”) and the Control Entity Defendants during the Class Period (the “Excluded Officers and Directors”); (iii) members of the immediate families of the Individual Defendants and of the Excluded Officers and Directors; (iv) any entity in which any Defendant, any of the Excluded Officers and Directors or any of their respective immediate family members has and/or had during the Class Period a controlling interest; (v) Defendants’ liability insurance carriers; (vi) any affiliates, parents or subsidiaries of Alta Mesa, Silver Run II, AMH, KFM or the Control Entity Defendants; (vii) all Alta Mesa, Silver Run II, AMH, KFM and Control Entity Defendants’ plans that are covered by ERISA; and (viii) the legal representatives, heirs, agents, affiliates, successors-in-interest or assigns of any excluded person or entity, in their respective capacity as such. Anyone who previously validly excluded themselves from the class certified by the Court is not a member of the Class. To have excluded yourself from the Class, you must have mailed a written request for exclusion so that it was postmarked by May 17, 2024, in accordance with the instructions set forth in the notice of class certification disseminated pursuant to Court order. No further exclusion opportunity is being provided under the Settlement. Also excluded from the Class are plaintiffs in Alyeska Master Fund, L.P., et al. v. Alta Mesa Resources, Inc., et al., Case No. 4:22-cv-01189 and in Orbis Global Equity LE Fund (Australia Registered), et al. v. Alta Mesa Resources, Inc., et al., Case No. 4:22-cv-02590. Anyone with questions as to whether or not they are excluded from the Class may call the Claims Administrator toll-free at 1-855-208-4124.

Please read the Notice to fully understand your rights and options. Copies of the Notice and Claim Form can be found in the Important Documents and File a Claim tabs at the top of this page.

Payments to eligible claimants will be made only if the Court approves the Settlement and a Plan of Allocation, after any appeals are resolved, and after the completion of all claims processing. Please be patient, as this process will take some time to complete.

How do I obtain more information?

Detailed information about the Settlement is contained in the Notice and the documents on the Important Documents tab at the top of this page. Additional information can also be obtained by contacting the Claims Administrator by calling toll-free 855-208-4124 or emailing info@AltaMesaSecuritiesLitigation.com or mailing a letter to:

Alta Mesa Securities Litigation
c/o JND Legal Administration
PO Box 91218
Seattle, WA 98111

Inquiries should NOT be directed to the Court or the Clerk of the Court.