Bylaw Amendment

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 September 17, 2024 Date of Report (Date of earliest event reported)                   Lincoln National Corporation              (Exact name of registrant as specified in its charter) Indiana 1-6028 35-1140070 (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 150 N. Radnor Chester Road , Radnor , PA 19087 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: ( 484 ) 583-1400 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(s) Name of each exchange on which registered Common Stock LNC New York Stock Exchange Depositary Shares, each representing a 1/1000 th interest in a share of 9.000% Non-Cumulative Preferred Stock, Series D LNC PRD New York Stock Exchange __________________________________ 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 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. On September 17, 2024, the Lincoln National Corporation (“Company”) Board of Directors (the “Board”) approved an amendment to the Amended and Restated Bylaws of the Company (the “Bylaws”), effective September 17, 2024, to modify the language in Article II, Section 1 of the Bylaws to decrease the number of authorized Board members from twelve to eleven. The foregoing summary of the Bylaws does not purport to be complete and is qualified in its entirety by reference to the full text of the Bylaws attached hereto as Exhibit 3.1 and incorporated herein by reference. Item 9.01. Financial Statements and Exhibits. (d) Exhibits. Exhibit Number Description 3.1 Amended and Restated Bylaws of the Company, effective September 17, 2024. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURES 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. LINCOLN NATIONAL CORPORATION By /s/ Nancy A. Smith Name: Nancy A. Smith Title: Senior Vice President and Secretary      Date: September 18, 2024