(Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION13 or 15(d)OF THE SECURITIES EXCHANGE ACT OF1934 For the Quarterly Period Ended March31, 2026 OR TRANSITION REPORT PURSUANT TO SECTION13 or 15(d)OF THE SECURITIES EXCHANGE ACT OF1934 For the transition period fromtoCommission file numbers: 001-42188 5080 Spectrum Drive, Suite 1200WAddison, TX 75001(Address of Principal Executive Offices and Zip code)(972)364-8000(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the Registrant (1)has filed all reports required to be filed by Section13 or 15(d)of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter periods as such Registrant was required to file such reports), and (2)has been subject tosuch filing requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the Registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405of Regulation S-T during the preceding 12 months (or for such shorter period that the Registrant was required to submit such files).Yes☒No☐ Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, oran emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growthcompany” in Rule12b-2 of the Exchange Act. (Check one): If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with anynew or revised financial accounting standards provided pursuant to Section13(a)of the Exchange Act.☐ Indicate by check mark whether the Registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).Yes☐No☒ Unless the context indicates otherwise, any reference in this report to “Concentra” refers to Concentra Group Holdings Parent,Inc. and itssubsidiaries. References to the “Company,” “we,” “us,” and “our” refer collectively to Concentra. TABLE OF CONTENTS ITEM 1.CONDENSED CONSOLIDATED FINANCIAL STATEMENTSCondensed Consolidated Balance SheetsCondensed Consolidated Statements of OperationsCondensed Consolidated Statements of Comprehensive IncomeCondensed Consolidated Statements of Changes in EquityCondensed consolidated Statements of Cash FlowsNotes to Condensed Consolidated Financial StatementsITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION ANDRESULTS OF OPERATIONSITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKITEM 4.CONTROLS AND PROCEDURES PARTIIOTHER INFORMATION ITEM 1.LEGAL PROCEEDINGS36ITEM 1A.RISK FACTORS36ITEM 2.UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS36ITEM 3.DEFAULTS UPON SENIOR SECURITIES36ITEM 4.MINE SAFETY DISCLOSURES36ITEM 5.OTHER INFORMATION36ITEM 6.EXHIBITS37SIGNATURES38 PART I - FINANCIAL INFORMATION CONCENTRA GROUP HOLDINGS PARENT, INC.CONDENSED CONSOLIDATED BALANCE SHEETS(Unaudited)(in thousands, except par value and share data) CONCENTRA GROUP HOLDINGS PARENT, INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(Unaudited)(in thousands, except per share amounts) The accompanying notes are an integral part of these condensed consolidated financial statements. CONCENTRA GROUP HOLDINGS PARENT, INC.CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME(Unaudited)(in thousands) The accompanying notes are an integral part of these condensed consolidated financial statements. CONCENTRA GROUP HOLDINGS PARENT, INC.CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY(Unaudited)(in thousands, except per share amounts) CONCENTRA GROUP HOLDINGS PARENT, INC.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(Unaudited)(in thousands) CONCENTRA GROUP HOLDINGS PARENT, INC.NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Unaudited) 1.Organization Concentra Group Holdings Parent, Inc., a Delaware corporation, conducts substantially all of its business through ConcentraHealth Services, Inc., a wholly owned subsidiary of Concentra (“CHSI”), and CHSI’s subsidiaries. As the context may require, the“Company,” “we,”, “us”, “our” or similar words in this report refer collectively to Concentra. The Company is the largest provider of occupational health services in the United States by number of locations. As of March31,2026, we operated 632 stand-alone occupational health centers in 41 states and 411 onsite health clinics at employer worksites in 45states. The Company provides a diverse and comprehensive array of occupational health services, including workers’ compensationand employer services, and consumer health services. 2.Accounting Policies Basis of Presentation and Consolidation The unaudited condensed consolidated financial statements of the Company as of March31, 2026, and for the three monthsended March31, 2026 and 2025, have been prepared pursuant to the rules and regul