UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

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
GRAHAM HOLDINGS COMPANY
(Name of registrant as specified in its charter)
(Name of person(s) filing proxy statement, if other than the registrant)
Payment of Filing Fee (Check the appropriate box):
☒	No fee required.
☐	Fee paid previously with preliminary materials.
☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

+ MMMMMM C 1234567890 ENDORSEMENT_LINE______________ SACKPACK_____________ MR A SAMPLE Online DESIGNATION (IF ANY) ADD 1 Go to www.envisionreports.com/GHC or scan 000001 ADD 2 the QR code — login details are located in the ADD 3 shaded bar below. ADD 4 ADD 5 Votes submitted electronically must be ADD 6 received by 5:00 p.m., Eastern Daylight Time, on May, 6, 2024. For participants in the Graham Holdings Company 401(k) savings plans, with Company class B common stock allocated to your account, voting directions must be received by 11:00 p.m. Eastern Daylight Time on May 2, 2024. Shareholder Meeting Notice 1234 5678 9012 345 Important Notice Regarding the Availability of Proxy Materials for the Graham Holdings Company Shareholder Meeting to be Held on May 7, 2024 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and annual report to shareholders are available at: www.envisionreports.com/GHC Easy Online Access — View your proxy materials and vote. Step 1:Go to www.envisionreports.com/GHC. Step 2: Click on Cast Your Vote or Request Materials. Step 3: Follow the instructions on the screen to log in. Step 4: Make your selections as instructed on each screen for your delivery preferences. Step 5: Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before April 26, 2024 to facilitate timely delivery. 2NOT COY + 03YDJC

Shareholder Meeting Notice Graham Holdings Company’s Annual Meeting of Shareholders will be held on May 7, 2024 at The Hamilton, 600 14th Street, N.W., Washington, DC 20005, at 8:30 a.m. Eastern Daylight Time. The proposal to be voted on at the meeting is listed below along with the Board of Directors’ recommendation.  1. Election of Directors:  01—Tony Allen  02—Danielle Conley  03—Christopher C. Davis The Board of Directors recommend a vote FOR all the nominees listed. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please bring this notice with you. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. — Internet – Go to www.envisionreports.com/GHC. Click Cast Your Vote or Request Materials. — Phone – Call us free of charge at 1-866-641-4276. — Email – Send an email to investorvote@computershare.com with “Proxy Materials Graham Holdings Company” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials.  To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by April 26, 2024.

Your Vote Counts! GRAHAM HOLDINGS COMPANY 2024 Annual Meeting Vote by May 06, 2024 11:59 PM ET Hextone, Inc. P.O. Box 91421 Farmingdale, NY 11735 148,294 322,224 OF 2 Ricky Campana P.O. Box 123456 Suite 500 30# 51 Mercedes Way Edgewood, NY 11717 FLASHID-JOB# You invested in GRAHAM HOLDINGS COMPANY 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 material for the shareholder meeting to be held on May 07, 2024. Get informed before you vote View the Annual Report, Notice & Proxy Statement online OR you can receive a free paper or email copy of the material(s) by requesting prior to April 23, 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. XXXX XXXX XXXX XXXX Smartphone users Vote in Person at the Meeting* Point your camera here and May 07, 2024 vote without entering a 8:30 AM EDT control number The Hamilton 600 14th Street N.W. Washington, DC 20005 *If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.ProxyVote.com or request a paper copy of the materials, which will contain the appropriate instructions. Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com Control # XXXX XXXX XXXX XXXX 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. Voting Items Board Recommends 1. Election of Directors Nominees: 1A Tony Allen For 1B Danielle Conley For 1C Christopher C. Davis For NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Under New York Stock Exchange rules, brokers may vote “routine” matters at their discretion if your voting instructions are not communicated to us at least 10 days before the meeting. We will nevertheless follow your instructions, even if the broker’s discretionary vote has already been given, provided your instructions are received prior to the meeting date. 1.00000 322,224 FLASHID-JOB# 148,294