Results of Operations

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): April 21, 2026   EQUIFAX INC. (Exact name of registrant as specified in Charter) GA   001-06605   58-0401110 (State or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer Identification No.)   1550 Peachtree Street N.W. Atlanta GA 30309 (Address of principal executive offices) (Zip Code)   Registrant’s telephone number, including area code: ( 404 ) 885-8000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol Name of each exchange on which registered Common stock, $1.25 par value per share EFX New York Stock Exchange   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 obligations of the registrant under any of the following provisions:   ☐ Written communication 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)) ☐ 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). ☐ 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 April 21, 2026 , Equifax Inc. issued a press release disclosing financial results for the three month period ended March 31, 2026. A copy of the text of the press release is attached as Exhibit 99.1 hereto. The information in Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference in such filing.   Item 9.01.    Financial Statements and Exhibits.   (d) Exhibits 99.1    Press release of Equifax Inc. Press release of Equifax Inc. dated April 21, 202 6 . SIGNATURE   Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.     EQUIFAX INC.             By:   /s/ John W. Gamble, Jr.     Name:   John W. Gamble, Jr.     Title: Executive Vice President, Chief Financial Officer       and Chief Operations Officer Date: April 21, 2026