ASGN

asgn-202602040000890564false00008905642026-02-042026-02-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): February 4, 2026 (February 4, 2026)

ASGN Incorporated (Exact name of registrant as specified in its charter)

Delaware 001-35636 95-4023433 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)

4400 Cox Road, Suite 110, Glen Allen, Virginia 23060 (Address of Principal Executive Offices)

(Zip Code)

(888) 482-8068 Registrant’s telephone number, including area code

Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of exchange on which registered Common StockASGNNYSE

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging 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 any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On February 4, 2026, ASGN Incorporated (the “Company”) announced its financial results for the fourth quarter and year ended December 31, 2025. A copy of the press release is furnished pursuant to Item 2.02 of this Current Report on Form 8-K as Exhibit 99.1.

The Company’s management will discuss operations and financial results in an earnings conference call beginning at 4:30 p.m. Eastern time on February 4, 2026. A live audio broadcast of the conference call along with a supplemental presentation will be available to the public through links on the Investor Relations section of the Company’s website (www.asgn.com).

The information in this report, including Exhibit 99.1 attached hereto, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that Section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits 99.1 Press release of ASGN Incorporated dated February 4, 2026

104.1Cover page interactive data file (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Exchange Act, the Company has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized

ASGN Incorporated

Date: February 4, 2026/s/ Marie L. Perry Marie L. Perry Executive Vice President and Chief Financial Officer

asgn-202601200000890564false00008905642026-01-202026-01-20

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): January 20, 2026 (January 20, 2026)

ASGN Incorporated (Exact name of registrant as specified in its charter)

Delaware 001-35636 95-4023433 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.)

4400 Cox Road, Suite 110, Glen Allen, Virginia 23060 (Address of Principal Executive Offices)

(Zip Code)

(888) 482-8068 Registrant’s telephone number, including area code

Not Applicable (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading SymbolName of exchange on which registered Common StockASGNNYSE

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging 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 any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On January 20, 2026, ASGN Incorporated (the “Company”) issued a press release announcing updates to its previously announced financial estimates for the fourth quarter of 2025. A copy of the press release is furnished pursuant to Item 2.02 of this Current Report on Form 8-K as Exhibit 99.1.

Item 7.01 Regulation FD Disclosure.

The press release also included an announcement that the Company had entered into a definitive agreement to acquire Quinnox Inc.

The information in this report, including Items 2.02 and 7.01 and Exhibit 99.1 attached hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, and shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits 99.1 Press release of ASGN Incorporated dated January 20, 2026

104.1Cover page interactive data file (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Exchange Act, the Company has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized

ASGN Incorporated

Date: January 20, 2026/s/ Marie L. Perry Marie L. Perry Executive Vice President and Chief Financial Officer