
ANNUAL REPORT PURSUANT TO SECTION13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 For fiscal year ended December31, 2025OR☐TRANSITION REPORT PURSUANT TO SECTION13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 For the transition period fromtoCommission file numbers: 001-42188 CONCENTRA GROUP HOLDINGS PARENT, INC. 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 Section12(g) of the Act:None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the Securities Act.Yes☒No☐ Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of the Act.Yes☐No☒ 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 of 1934 during the precedingtwelve months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T(§232.405 of this chapter) during the preceding twelve 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, or an emerging growthcompany. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of the Exchange Act.(Check one): Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐Emerging growth company Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financialreporting under Section 404(b) of the Sarbanes-Oxley Act by the registered public accounting firm that prepared or issued its audit report.☒ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect thecorrection of an error to previously held financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of theregistrant’s executive officers during the relevant recovery period pursuant to Section 240.10D-1(b).☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Act).Yes☐No☒ The aggregate market value of the voting and non-voting common stock held by non-affiliates of the registrant on June 30, 2025, the last business day of the registrant’s mostrecently completed second quarter, was $2,365,492,630, based on the closing price for the common stock on the New York Stock Exchange. As of January 31, 2026, the number of shares outstanding of the registrant’s common stock was 128,634,749. Unless the context indicates otherwise, any reference in this report to “Concentra” refers to Concentra Group Holdings Parent, Inc. and its subsidiaries. References to the“Company,” “we,” “us,” and “our” refer collectively to Concentra and its subsidiaries. Documents Incorporated by Reference Portions of the registrant’s definitive proxy statement relating to the annual meeting of shareholders to be held on or about April 30, 2026 will be filed with the Securities andExchange Commission within 120days after the registrant’s fiscal year ended December31, 2025, and is incorporated by reference in Part III of this Form 10-K. CONCENTRA GROUP HOLDINGS PARENT, INC.ANNUAL REPORT ON FORM 10-KFOR THE YEAR ENDED DECEMBER31, 2025 Item PART I Forward-Looking StatementsItem1.Business.Item1A.Risk Factors.Item1B.Unresolved Staff Comments.Item 1C.Cybersecurity.Item2.Properties.Item3.Legal Proceedings.Item4.Mine Safety Disclosures. PART IIMarket for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Item5.Securities.Item6.[Reserved]Item7.Management's Discussion and Analysis of Financial Condition and Results of Operations.Item7A.Quantitative and Qualitative Disclosures About Market Risk.Item8.Financial Statements and Supplementary Data.Item9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure.Item9A.Controls and Procedures.Item9B.Other Information.Item9C.Disclosure Regarding Foreign Jurisdictions that Prevent Inspections. PART III Item10.Directors, Executive Officers and Corporate Governance.Item11.Executive Compensation.Item12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.