Company: KW
Filing Date: 2025-08-08
Form Type: 424B3
Source: 0001408100-25-000150
Chunk: 1

Company: Kennedy-Wilson Holdings, Inc.
Filing Date: 2025-08-08
Form: 424B3
Chunk 1
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 as other filings containing information about the Company, without charge, at the SEC's Internet site (http://www.sec.gov). Copies of the Registration Statement, the Prospectus and this Prospectus Supplement can also be obtained, without charge, from the Company's corporate website at www.kennedywilson.com, or by directing a request to the Company, Attention: Investor Relations, 151 S El Camino Drive, Beverly Hills, California 90212.

In addition to the documents described above, the Company files annual, quarterly and current reports, proxy statements and other information with the SEC, which are available at the SEC's website at www.sec.gov or at the Company's website at www.kennedywilson.com.

The information contained in, or that can be accessed through, the Company's website is deemed not to be a part of this filing.

THIS FILING IS FOR INFORMATION PURPOSES ONLY AND SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY SECURITIES, NOR SHALL THERE BE ANY SALE OF SECURITIES IN ANY JURISDICTION IN WHICH SUCH SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF SUCH JURISDICTION.

#### Appendix A

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### FORM 10-Q
(Mark One)

| ☒ |     | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

#### For the quarterly period ended June 30, 2025

#### Or
| ☐ |     | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |

#### For the transition period from to .

#### Commission file number 001-33824

#### Kennedy-Wilson Holdings, Inc.
<div align='center'>(Exact name of Registrant as specified in its charter)</div>

| Delaware                        |     | 26-0508760         |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -I.R.S. Employer   
 Identification No. |

#### 151 S El Camino Drive

#### Beverly Hills, CA 90212
<div align='center'>(Address of principal executive offices)(Zip Code)

Registrant