ONEX Onex Corporation

Onex Corporation (TSX: ONEX) will release its results for the first quarter ended March 31, 2023 on May 12, 2023. A live broadcast of Onex’ webcast to discuss the results will begin at 11:00 a.m. ET on May 12, 2023.

Onex’ Annual Meeting of Shareholders will be held virtually on May 11, 2023 at 10:00 a.m. ET.

A link to these webcasts and the online replays will be available at www.onex.com/events-and-presentations.

About Onex

Onex is an investor and asset manager that invests capital on behalf of Onex shareholders and clients across the globe. Formed in 1984, we have a long track record of creating value for our clients and shareholders. Onex’ two primary businesses are Private Equity and Credit. In Private Equity, we raise funds from third-party investors, or limited partners, and invest them, along with Onex’ own investing capital, through the funds of our private equity platforms, Onex Partners and ONCAP. Similarly, in Credit, we raise and invest capital across several private credit, public credit and public equity strategies. Our investors include a broad range of global clients, including public and private pension plans, sovereign wealth funds, insurance companies and family offices. In total, Onex has US$50.8 billion in assets under management, of which US$7.9 billion is Onex’ own investing capital. With offices in Toronto, New York, New Jersey, Boston and London, Onex and its experienced management teams are collectively the largest investors across Onex’ platforms.

Onex is listed on the Toronto Stock Exchange under the symbol ONEX. For more information on Onex, visit its website at www.onex.com. Onex’ security filings can also be accessed at www.sedar.com.

For further information:

Jill HomenukManaging Director – Shareholder Relations and Communications+1 416.362.7711

Zev KormanVice President, Shareholder Relations and Communications+1 416.362.7711