UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE

SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. )

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☐Preliminary Proxy Statement

☐Confidential, For Use of the Commission Only

(as permitted by Rule 14a-6(e)(2))

☐Definitive Proxy Statement

☒Definitive Additional Materials

☐Soliciting Material Pursuant to §240.14a-12

Lincoln National Corporation

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Your Vote Counts! LINCOLN NATIONAL CORPORATION 2024 Annual Meeting of Shareholders Vote by May 22, 2024 11:59 PM ET. For shares held in a Plan, vote by May 20, 2024 11:59 PM ET.LINCOLN NATIONAL CORPORATION 150 NORTH RADNOR-CHESTER RD RADNOR, PA 19087 You invested in LINCOLN NATIONAL CORPORATION and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on May 23, 2024. Get informed before you vote View the Proxy Statement and Notice of Annual Meeting and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 9, 2024. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Point your camera here and vote without entering a control number Vote Virtually at the Meeting* May 23, 2024 9:00 AM EDT Virtually at: www.virtualshareholdermeeting.com/LNC2024 *Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters.Board Voting Items Recommends 1.The election of twelve directors for a one-year term expiring at the 2025 Annual Meeting. Nominees:1a. Deirdre P. Connelly For 1b. Ellen G. Cooper For 1c. William H. Cunningham For 1d.Reginald E. Davis For 1e. Eric G. Johnson For 1f. Gary C. Kelly For 1g.M. Leanne Lachman For 1h. Dale LeFebvre For 1i. Janet Liang For 1j. Michael F. Mee For 1k. Owen Ryan For 1l. Lynn M. Utter For 2. The ratification of the appointment of Ernst & Young LLP as the independent registered public accounting firm for 2024. For3. The approval of an advisory resolution on the compensation of our named executive officers. For 4. The approval of an amendment to the Lincoln National Corporation 2020 Incentive Compensation Plan. For 5. Shareholder proposal to amend our governing documents to provide for an independent chairman of the board. Against NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”.