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Alta Mesa Resources Securities Litigation Settlement

Last verified September 18, 2026Source: jndHow ClaimWatch verifies cases

Closed to new claims. Browse open settlements →

Where this case stands

Final approval hearing held May 6, 2025

Claims closed. The court docket does not yet show a final approval order. Once one is entered, payments usually follow within three to twelve months.

Pending in the U.S. District Court (No. 4:19-cv-00957).

  1. March 14, 2019
    Case filed
  2. May 17, 2024
    Opt-out deadline

    Last day to exclude yourself and keep the right to sue separately.

  3. January 17, 2025
    Case closed by the court
  4. May 6, 2025
    Final approval hearing

    The court hears any objections and decides whether to approve the settlement.

What happened

Class plaintiffs alleged securities law violations against Alta Mesa Resources and related defendants concerning the company's merger and business combination. The defendants have agreed to settle all claims for $126.3 million in cash, with the Court entering final judgment approving the settlement on May 6, 2025.

Do you qualify?

The class includes persons and entities that held Silver Run II common stock or units on the January 22, 2018 record date; those who purchased Silver Run II or Alta Mesa common stock, warrants, or units between August 16, 2017 and the February 9, 2018 business combination closing; and those who purchased Alta Mesa common stock or warrants between February 9, 2018 and May 17, 2019. Excluded are defendants, their immediate families, corporate officers and directors, and those who previously validly excluded themselves by the May 17, 2024 deadline.

Who is in the class

all persons and entities who: (1) 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"); or (2) 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; or (3) 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)

Quoted from the settlement notice.

How to file

Settlement funds have already been distributed to authorized claimants in two distributions (December 19, 2025 and July 2, 2026). For questions about eligibility or claim status, contact the Claims Administrator at 1-855-208-4124, info@AltaMesaSecuritiesLitigation.com, or by mail to Alta Mesa Securities Litigation, c/o JND Legal Administration, PO Box 91218, Seattle, WA 98111. Claims are now closed.

Common questions

How much does the Alta Mesa Resources Securities Litigation Settlement pay?
The settlement fund is $126.3M.Why settlement checks are smaller than the headline number →
What is the status of the Alta Mesa Resources Securities Litigation Settlement?
Final approval hearing held May 6, 2025. Claims closed. The court docket does not yet show a final approval order. Once one is entered, payments usually follow within three to twelve months.
Is the Alta Mesa Resources Securities Litigation Settlement notice real, or a scam?
JND Legal Administration is the court-appointed administrator. Claims are filed only at altamesasecuritieslitigation.com. Filing is always free, and no administrator asks for payment or a full Social Security number by email or text.How to tell a real settlement notice from a scam →
Who are the attorneys in the Alta Mesa Resources Securities Litigation Settlement?
For the plaintiffs: Sheila A. Sadighi (Ronick Kramer Sadighi LLP); Joseph Riede Sparacio (Rolnick Kramer Sadighi LLP); Richard Alexander Bodnar (Rolnick Kramer Sadighi LLP); Michael J Hampson (Rolnick Kramer Sadighi LLP). For 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: Emily Frances Couture (Quinn Emanuel et al); Anna Elizabeth Swanson (Kirkland & Ellis LLP); Ian Nathaniel Jones (Eversheds Sutherland (US) LLP); Samantha Darnell (Eversheds Sutherland (US) LLP). From the public court docket.

Who's involved

Plaintiffs

  • Orbis Institutional US Equity LP(Consol Plaintiff)
  • Orbis OEIC(Consol Plaintiff)
  • Allan Gray Australia Balanced Fund(Consol Plaintiff)
  • Orbis Institutional Funds Limited(Consol Plaintiff)
  • Orbis Global Equity Fund Limited(Consol Plaintiff)
  • Orbis Institutional Global Equity LP(Consol Plaintiff)
  • Orbis SICAV(Consol Plaintiff)
  • Orbis Global Balanced Fund(Consol Plaintiff)

+ 9 more

Defendants

  • Bayou City Energy, LLC
  • High Mesa Holdings, LP
  • High Mesa Holdings GP, LLC
  • Ronald Smith
  • Donald Sinclair
  • William W. McMullen
  • David M. Leuschen
  • Pierre F. Lapeyre

+ 15 more

Counsel for plaintiffs

Counsel for defendants

Other cases these firms appear in

From the public court docket, contact details as filed; not an endorsement.

In the news

Headlines via NewsAPI.

Guides:Why is my settlement check so small?How long a settlement takes to pay outIs this settlement notice real, or a scam?

Summarised from public settlement documents; confirm terms on the official settlement website. ClaimWatch is not a law firm, and filing a claim is free.

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