Additional Proxy Soliciting Materials - Form DEFA14A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

(Rule 14a-101)

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES

EXCHANGE ACT OF 1934 (AMENDMENT NO.  )

Filed by the Registrant ☑ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐  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

Your Vote Counts! AMC NETWORKS INC. 2024 Annual Meeting Vote by June 11, 2024 11:59 PM ET. For shares held in the AMC Networks 401(k) Savings Plan, vote by June 7, 2024 11:59 PM ET. AMC NETWORKS INC. 11 PENN PLAZA NEW YORK, NY 10001 V48376-P11955 You invested in AMC NETWORKS INC. 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 stockholder meeting to be held on June 12, 2024. Get informed before you vote View the Notice, Proxy Statement and Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 29, 2024. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. 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 Vote Virtually at the Meeting* Point your camera here and June 12, 2024 10:00 a.m., EDT vote without entering a control number Virtually at: www.virtualshareholdermeeting.com/AMCX2024 *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 stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items for our Class A Stockholders Recommends 1. Election of the following nominees as Directors: Nominees: 01) Matthew C. Blank For 02) Joseph M. Cohen 03) Debra G. Perelman 04) Leonard Tow 05) Carl E. Vogel 2. Ratification of the appointment of KPMG LLP as our independent registered public accounting firm for 2024 For 3. Advisory vote on Named Executive Officer compensation For 4. Advisory Vote on Frequency of the Stockholder Vote on Executive Compensation 1 Year 5. Vote on Proposal to Approve the Company's Amended and Restated 2011 Stock Plan for Non-Employee Directors For 6. Vote on Stockholder Proposal Regarding Voting Standards for Director Elections Against Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". V48377-P11955

Your Vote Counts! AMC NETWORKS INC. 2024 Annual Meeting Vote by June 11, 2024 11:59 PM ET. AMC NETWORKS INC. 11 PENN PLAZA NEW YORK, NY 10001 V48378-P11955 You invested in AMC NETWORKS INC. 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 stockholder meeting to be held on June 12, 2024. Get informed before you vote View the Notice, Proxy Statement and Annual Report on Form 10-K online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 29, 2024. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. 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 Vote Virtually at the Meeting* Point your camera here and June 12, 2024 10:00 a.m., EDT vote without entering a control number Virtually at: www.virtualshareholdermeeting.com/AMCX2024 *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 stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items for our Class B Stockholders Recommends 1. Election of the following nominees as Directors: Nominees: 01) Aidan J. Dolan 05) Stephen C. Mills For 02) James L. Dolan 06) Brian G. Sweeney 03) Patrick F. Dolan 07) Vincent Tese 04) Thomas C. Dolan 08) Marianne Dolan Weber 2. Ratification of the appointment of KPMG LLP as our independent registered public accounting firm for 2024 For 3. Advisory vote on Named Executive Officer compensation For 4. Advisory Vote on Frequency of the Stockholder Vote on Executive Compensation 1 Year 5. Vote on Proposal to Approve the Company's Amended and Restated 2011 Stock Plan for Non-Employee Directors For 6. Vote on Stockholder Proposal Regarding Voting Standards for Director Elections Against Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". V48379-P11955