Washington, DC 20549 FORM 11-K (Mark One)ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For fiscal year ended December 31, 2025 OR TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF1934 For the transition period from _____ to _____Commission file number: 001-31400 A.Full title of the plan and the address of the plan, if different from that of the issuer named below: CACI $MART PLAN B.Name of issuer of the securities held pursuant to the plan and the address of its principal executive office: CACI International Inc, 12021 Sunset Hills Road, Reston, VA 20190 CACI $MART Plan Financial Statements and Supplemental ScheduleYears Ended December31, 2025 and 2024 Contents Report of Independent Registered Public Accounting Firm Audited Financial Statements Statements of Net Assets Available for BenefitsStatements of Changes in Net Assets Available for BenefitsNotes to Financial Statements Supplemental Schedules Signature Exhibit Exhibit 23.1 - Consent of Independent Registered Public Accounting Firm Report of Independent Registered Public Accounting Firm Plan Administrator and Plan ParticipantsCACI $MART Plan Opinion on the financial statements We have audited the accompanying statements of net assets available for benefits of CACI $MART Plan (the “Plan”) as of December31, 2025 and 2024, the related statements of changes in net assets available for benefits for the years ended December 31, 2025 and2024, and the related notes(collectively referred to as the “financial statements”). In our opinion, the financial statements presentfairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2025 and 2024, and the changes innet assets available for benefits for the years ended December 31, 2025 and 2024 in conformity with accounting principles generallyaccepted in the United States of America. Basis for opinion These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’sfinancial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting OversightBoard (United States) (“PCAOB”) and are required to be independent with respect to the Plan in accordance with the U.S. federalsecurities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the auditto obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part ofour audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressingan opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due toerror or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidenceregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles usedand significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believethat our audits provide a reasonable basis for our opinion. Supplemental information The schedule of assets (held at end of year) as of December 31, 2025 (“supplemental information”) has been subjected to auditprocedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental information is theresponsibility of the Plan’s management. Our audit procedures included determining whether the supplemental information reconcilesto the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test thecompleteness and accuracy of the information presented in the supplemental information. In forming our opinion on the supplementalinformation, we evaluated whether the supplemental information, including its form and content, is presented in conformity with theDepartment of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as awhole. /s/ GRANT THORNTON LLP We have served as the Plan’s auditor since 2023. Philadelphia, PennsylvaniaJune 4, 2026 CACI $MART Plan Statements of Net Assets Available for Benefits(in thousands) CACI $MART Plan Statement