Amendments to Bylaws (Form 8-K)

On June 16, 2026, the Board of Directors of Equifax Inc. (the "Company") approved amendments to the Company's Amended and Restated Bylaws (the "Bylaws"), effective immediately. The amendments to the Bylaws revise the requirements for shareholders to request a special meeting by providing that a special meeting of the shareholders may be called by the Secretary of the Company upon the proper request of one or more shareholders owning at least 25% of the voting power of all shares of stock of the Company issued and outstanding for at least one year as of the date of the request, subject to compliance with the procedural requirements set forth in the amendments. The amendments also include certain other ministerial clarifications and updates.

A copy of the Bylaws, including the amendments referenced above, is included as Exhibit 3.1 to this Current Report on Form 8-K and incorporated by reference herein.