Results of Operations · Reg FD Disclosure

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 23, 2025 NORTHERN TRUST CORP ORATION (Exact name of registrant as specified in its charter) Delaware 001-36609   36-2723087 (State or other jurisdiction of incorporation) (Commission File Number)   (IRS Employer Identification No.) 50 South LaSalle Street   60603 Chicago, Illinois (Zip Code) (Address of principal executive offices)   Registrant’s telephone number, including area code ( 312 )  630-6000 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 class Trading Symbol Name of each exchange on which registered Common Stock, $1.66 2/3 Par Value NTRS The NASDAQ Stock Market LLC Depositary Shares, each representing 1/1,000th interest in a share of Series E Non-Cumulative Perpetual Preferred Stock NTRSO The NASDAQ Stock Market LLC 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 The information contained in the registrant’s January 23, 2025 press release, reporting on the registrant’s earnings for the three and twelve months ended December 31, 2024, a copy of which is attached as Exhibit 99.1 hereto, is incorporated herein by reference. Item 7.01. Regulation FD Disclosure On January 23, 2025, Northern Trust Corporation (the “Corporation”) will hold a live conference call and webcast to discuss financial results for the three and twelve months ended December 31, 2024 and other matters relating to the Corporation. In connection therewith, the Corporation has also made available on its website presentation materials containing certain information relating to the Corporation (the “Presentation Materials”) and materials that contain additional information about the Corporation’s financial results for the three and twelve months ended December 31, 2024 (the “Financial Trends”), copies of which are attached as Exhibits 99.2 and 99.3 hereto, and are incorporated herein by reference. Item 9.01.    Financial Statements and Exhibits The information provided in this Current Report on Form 8-K, including Exhibits 99.1, 99.2 and 99.3, is being furnished and shall not be deemed “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, nor shall it be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing.     (d) Exhibits: Exhibit Number Description 99.1 Press Release 99.2 Presentation Materials 99.3 Financial Trends 104 The cover page from this Current Report on Form 8-K, formatted in Inline XBRL. 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.   NORTHERN TRUST CORPORATION (Registrant) Dated: January 23, 2025 By: /s/ David W. Fox, Jr. David W. Fox, Jr. Executive Vice President and Chief Financial Officer