COMMONWEALTH BANK OF AUSTRALIA. DISCLOSUREInsider Transactions (Form 3/4/5)

Appendix 3Y - Matthew Comyn

Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. Matthew Peter Comyn Date of Notice: 3 September 2026 01/01/2011 Appendix 3Y Page 1 Rule 3.19A.2 Appendix 3Y Change of Director’s Interest Notice Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public. Introduced 30/09/01 Amended 01/01/11 Name of entity Commonwealth Bank of Australia ABN 48 123 123 124 We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act. Name of Director Matthew Peter Comyn Date of last notice 14 August 2026 Part 1 - Change of director’s relevant interests in securities In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part. Direct or indirect interest Direct Nature of indirect interest (including registered holder) Note: Provide details of the circumstances giving rise to the relevant interest. Not applicable Date of change 1 September 2026 No. of securities held prior to change Direct – 30,783 fully paid ordinary shares. Indirect – 25,386 fully paid ordinary shares. Beneficial interest in ordinary shares jointly by Matthew Peter Comyn and Lucy Comyn as beneficiaries of Lakaso Pty Ltd ATF Powell Trust held by HSBC Custody Nominees (Australia) Limited. 11,697 rights to acquire a maximum of 11,697 shares awarded under the Employee Equity Plan (EEP) which remain subject to a holding period and due to vest on or around 30 June 2027. 17,586 rights to acquire a maximum of 17,586 shares awarded under the EEP of which: • 8,793 rights remain subject to a holding period and due to vest on or around 30 June 2027, and For personal use only Appendix 3Y Change of Director’s Interest Notice + See chapter 19 for defined terms. Matthew Peter Comyn Date of Notice: 3 September 2026 01/01/2011 Appendix 3Y Page 2 • 8,793 rights remain subject to a holding period and due to vest on or around 30 June 2028. 19,032 rights