Company: WBD
Filing Date: 2025-04-23
Form Type: DEFA14A
Source: 0001437107-25-000087
Chunk: 0

Company: Warner Bros. Discovery, Inc.
Filing Date: 2025-04-23
Form: DEFA14A
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### SCHEDULE 14A

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934
<div align='center'>(Amendment No. )</div>

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 under §240.14a-12                                           |

#### Warner Bros. Discovery, Inc.
<div align='center'>(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

| ☒ |     | 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 |

Your Vote Counts! WARNER BROS. DISCOVERY, INC. 230 PARK AVENUE SOUTH NEW YORK, NY 10003 WARNER BROS. DISCOVERY, INC. 2025 Annual Meeting June 2, 2025 10:00 a.m., Eastern Time Virtual Meeting Site: http://www.virtualshareholdermeeting.com/WBD2025 You invested in WARNER BROS. DISCOVERY, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. *Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control 

# V66142-P30059-Z89726 Get informed before you vote View the Notice and Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 19, 2025. If you would like to request a copy of the