All entities that paid and/or reimbursed for (a) opioid prescription drugs manufactured, marketed, sold, or distributed by the Opioid Marketing Enterprise Members (Purdue, Johnson & Johnson, Janssen, Cephalon, Endo, and Mallinckrodt), for purposes other than resale, and/or (b) paid or incurred costs for treatment related to the misuse, addiction, and/or overdose of opioid drugs, on behalf of individual beneficiaries, insureds, and/or members, during the period June 1, 2009 to October 31, 2023 (?Class Period?). For clarity, included in the class are: (a) private contractors of Federal Health Employee Benefits plans, (b) plans for self-insured local governmental entities that have not settled claims in MDL 2804, (c) managed Medicaid plans, (d) plans operating under Medicare Part C and/or D, and (e) Taft Hartley plans. Excluded from the class are (a) all federal and state governmental entities, (b) all tribal entities, (c) local governmental entities and school districts, (d) Pharmacy Benefit Managers (PBMs), (e) consumers, and (f) fully-insured plans. For the avoidance of doubt, entities that are otherwise members of the class are not excluded on the basis that they own an interest, including a controlling interest, in a PBM.