Company: WBD
Filing Date: 2025-07-23
Form Type: 8-A12B
Source: 0001437107-25-000173
Chunk: 1

Company: Warner Bros. Discovery, Inc.
Filing Date: 2025-07-23
Form: 8-A12B
Chunk 1
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 York 10003
<div align='center'>(212) 548-5555

(Address of Principal Executive Offices)

Securities to be registered pursuant to Section 12(b) of the Act:</div>

| Title of each class to be so registered |     | Name of each exchange on which Each class is to be registered |
| 4.302% Senior Notes due 2030            
 4.693% Senior Notes due 2033            |     | The Nasdaq Stock Market LLC                                   
 The Nasdaq Stock Market LLC                                   |

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ☐

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐

<div align='center'>Securities Act registration statement file number to which this form relates:</div>

#### 333-264453
<div align='center'>(If applicable)

Securities to be registered pursuant to Section 12(g) of the Act:</div>

#### None
<div align='center'>(Title of Class)</div>

### INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Warner Bros. Discovery, Inc. (the “ Company ”) has filed with the U.S. Securities and Exchange Commission (the “ Commission ”) pursuant to Rule 424(b) under the Securities Act of 1933, as amended, a prospectus supplement dated May 14, 2024 (the “ Prospectus Supplement ”) to a prospectus dated April 22, 2022 (the “ Prospectus ”) contained in the Company’s effective Registration Statement on Form S-3 (Registration No 333-264453) (the “ Registration Statement ”), which Registration Statement was filed with the Commission on April 22, 2022, relating to the securities to be registered hereunder and the guarantees thereof. The Company incorporates by reference the Prospectus and the Prospectus Supplement to the extent set forth below.

## Item 1. Description of Registrant’s Securities to be Registered.
The information required by this item is incorporated by reference to the information contained in the sections caption