JUMBO INTERACTIVE LIMITED DISCLOSUREBeneficial Ownership (13D/G / major holdings)

Becoming a substantial holder

Notice of initial substantial shareholder Form 603 Corporations Act Section 671B To: Jumbo Interactive Ltd (“JIN”, Ordinary Fully Paid) 1. Details of substantial shareholder Citigroup Global Markets Australia Pty Limited (ACN 003 114 832) and each of the related bodies corporate in the Citigroup group of companies worldwide (for more details please visit www.citigroup.com). The holder became a substantial holder on 7 September 2026. 2. Details of voting power The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate had a relevant interest in on the date the substantial holder became a substantial holder are as follows: Class of securities Number of securities Person’s vote Voting Power Ordinary Fully Paid 3,846,619 3,846,619 6.0718% 3. Details of relevant interests Holder of relevant interest Nature of relevant interest Class and number of securities Citibank, N.A. Sydney Branch Citibank, N.A. Sydney Branch holds a relevant interest in these shares acting as Agent Lender and as the holder of securities subject to an obligation to return under a securities lending agreement. Refer to Annexure A. 1,552,763 Ordinary Fully Paid Citigroup Global Markets Australia Pty Limited Citigroup Global Markets Australia Pty Limited holds a relevant interest in these shares pursuant to contracts entered into subject to an obligation to return under a securities lending agreement and pursuant to contracts entered into in the ordinary course of business on a stock market of a stock exchange, containing no terms and conditions other than standard terms and conditions. Refer to Annexure A. 336,212 Ordinary Fully Paid Citigroup Global Markets Inc Citigroup Global Markets Inc holds a relevant interest in these shares pursuant to contracts entered into subject to an obligation to return under a securities lending agreement. Refer to Annexure A. 21,357 Ordinary Fully Paid For personal use only Citigroup Global Markets Limited Citigroup Global Markets Limited holds a relevant interest in these shares pursuant to contracts entered into subject to an obligation to return under a securities lending agreement. Refer to Annexure A. 1,936,287 Ordinary Fully Paid