Company: FOX
Filing Date: 2025-09-09
Form Type: 424B7
Source: 0001193125-25-199168
Chunk: 0

Company: Fox Corp
Filing Date: 2025-09-09
Form: 424B7
Chunk 0
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Filed Pursuant to Rule 424(b)(7)
Registration No. 333-273947 Prospectus Supplement (To Prospectus dated August 11, 2023) 16,835,016 Shares Fox Corporation Class B Common Stock The selling stockholders (as defined herein) are offering 16,835,016 shares (the “shares”) of Class B common stock, par value $0.01 per share (“Class B common stock”), of Fox Corporation (“FOX”). FOX is not selling any shares under this prospectus supplement and will not receive any of the proceeds from the sale of the shares by the selling stockholders. Our Class B common stock is listed on The Nasdaq Global Select Market (“Nasdaq”) under the symbol “FOX.” The last reported sale price of our Class B common stock on the Nasdaq on September 5, 2025 was $55.97 per share. Investing in our Class B common stock involves risks. See “ Risk Factors” beginning on page S-5of this prospectus supplement and the risk factors described in the documents that we file with the Securities and Exchange Commission (the “SEC”) that are incorporated herein by reference for a discussion of certain risks you should consider before deciding to invest in our Class B common stock. Neither the SEC nor any state securities commission has approved or disapproved of the shares or passed upon the accuracy or adequacy of this prospectus supplement or the accompanying prospectus. Any representation to the contrary is a criminal offense.

|                                                       |     | Per Share |       |     | Total |                |
|:------------------------------------------------------|:----|:----------|------:|:----|:------|---------------:|
| Public offering price                                 |     | $         | 54.25 |     | $     |    913,299,618 |
| Underwriting discounts(1)                             |     | $         |  0.79 |     | $     |  13,299,662.64 |
| Proceeds to the selling stockholders, before expenses |     | $         | 53.46 |     | $     | 899,999,955.36 |

| (1) | See “Underwriting” for a description of compensation payable to the underwriter (as defined 
 herein).                                                                                    |

The underwriter expects to deliver the shares against payment on or about September 10, 2025.

| Morgan Stanley |

The date of this prospectus supplement is September 8, 2025

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