盎塞 2025年度报告

☒ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 (the "Act") For the fiscal year endedDecember31, 2025 Commission File Number 001-35636 ASGN Incorporated(Exact name of registrant as specified in its charter) 95-4023433 (I.R.S. Employer Identification No.) 4400 Cox Road, Suite 110Glen Allen, Virginia23060(Address, including zip code, of Principal Executive Offices) (888) 482-8068(Registrant’s telephone number, including area code):Securities registered pursuant to Section12(b)of the Act: Securities registered pursuant to Section12(g)of the Act:None(Title of Class) Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the Securities Act of 1933.☒Yes☐NoIndicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d)of the Act.☐Yes☒NoIndicate 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 preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2)has been subject to suchfiling requirements of the past 90 days.☒Yes☐NoIndicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submitsuch files).☒Yes☐No Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or anemerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growthcompany" in Rule 12b-2 of the Exchange Act. Large accelerated filer☒Non-accelerated filer☐ Accelerated filerSmaller reporting companyEmerging growth company 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 Section 13(a) of the Exchange Act.☐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 financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm thatprepared 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 the correction of an error to previously issued 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 the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).☐Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Exchange Act).☐Yes☒NoAs of June30, 2025, the aggregate market value of our common stock (based upon the closing price of the stock on the New York Stock Exchange)held by non-affiliates of the registrant was $2.1 billion.As of February12, 2026, the registrant had 41.3million outstanding shares of Common Stock, $0.01 par value. DOCUMENTS INCORPORATED BY REFERENCE We are incorporating by reference into Parts II and III of this Annual Report on Form 10-K portions of the registrant’s definitive proxy statement forthe 2026 Annual Meeting of Stockholders, to be filed within 120 days of the close of the registrant’s fiscal year 2025. ASGN INCORPORATEDANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2025TABLE OF CONTENTS PART I BusinessRisk FactorsUnresolved Staff CommentsCybersecurityPropertiesLegal ProceedingsMine Safety Disclosures Item1.Item1A.Item1B.Item1C.Item2.Item3.Item4. PART II Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of EquitySecuritiesSelected Financial DataManagement’s Discussion and Analysis of Financial Condition and Results of OperationsQuantitative and Qualitative Disclosures About Market RiskFinancial Statements and Supplementary DataChanges in and Disagreements with Accountants on Accounting and Financial DisclosureControls and ProceduresOther InformationDisclosure Regarding Foreign Jurisdictions that Prevent Inspections Item5. Item6.Item7.Item7A.Item8.Item9.Item9A.Item9B.Item 9C. PARTIII Directors, Executive Officers and Corporate GovernanceExecutive CompensationSecurity Ownership of Certain Beneficial Owners and Management and Related Stockholder MattersCertain Relationships and Related Transactions and Director IndependencePrincipal Accounting Fees and Services Item10.Item11.Item12.Item13.Item14. PAR