Bank of Queensland Ltd.

Regulatory Filings • Dec 18, 2025

SUPPLEMENT DATED 16 DECEMBER 2025

Bank of Queensland Limited (ABN 32 009 656 740)

(incorporated with limited liability in the Commonwealth of Australia) U.S.\$4,000,000,000 Euro Medium Term Note Programme

This Supplement (the Supplement) to the Information Memorandum (the Information Memorandum) dated 22 April 2025 which comprises a base prospectus for the purposes of the UK Prospectus Regulation constitutes a supplement to the prospectus for the purposes of Article 23 of the UK Prospectus Regulation and is prepared in connection with the BOQ Euro Medium Term Note Programme (the Programme) established by the Bank of Queensland (the Issuer). Terms defined in the Information Memorandum have the same meaning when used in this Supplement. When used in this Supplement, UK Prospectus Regulation means Regulation (EU) 2017/1129 as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (EUWA).

This Supplement is supplemental to, and should be read in conjunction with, the Information Memorandum and any other supplements to the Information Memorandum issued by the Issuer. A copy of this Supplement and the information which is incorporated by reference in the Information Memorandum will be made available for inspection at the offices of the Issuer and at the offices of the Principal Paying Agent for so long as the Programme remains in existence. This Supplement and the information which is incorporated by reference in the Information Memorandum will be published on the website of the Regulatory News Service operated by the London Stock Exchange at http://www.londonstockexchange.com/exchange/news/market-news/marketnews-home.html and is available, without charge, on the internet site www.boq.com.au. Other than in relation to the documents which are deemed to be incorporated by reference in the Information Memorandum by virtue of this Supplement, the information on the websites to which this Supplement refers does not form part of this Supplement and has not been scrutinised or approved by the FCA.

The Issuer accepts responsibility for the information contained in this Supplement. To the best of the knowledge of the Issuer the information contained in this Supplement is in accordance with the facts and this Supplement makes no omission likely to affect the import of such information.

The purpose of this Supplement is to: (i) incorporate by reference the Issuer's annual financial statements as at and for the 12 month period ended 31 August 2025; and (ii) confirm that since 31 August 2025, being the end date for the financial period for which audited annual consolidated and non-consolidated financial statements of the Issuer have been published, there has been no significant change in the financial performance or financial position of the Group and no material adverse change in the prospects of the Issuer.

To the extent that there is any inconsistency between (a) any statement in this Supplement or any statement incorporated by reference into the Information Memorandum by this Supplement and (b) any other statement in or incorporated by reference in the Information Memorandum, the statements in (a) above will prevail.

Save as disclosed in this Supplement, there has been no other significant new factor, material mistake or material inaccuracy relating to information included in the Information Memorandum since the publication of the Information Memorandum.

Updates to the Information Memorandum

Additional Financial Information

Bank of Queensland Annual Report 2025

On 15 October 2025, the Issuer published its Annual Report (the 2025 Annual Report) which includes the Issuer's audited annual consolidated and non-consolidated financial statements (including the directors' report, auditor's report thereon and notes thereto) in respect of the year ended 31 August 2025 (as set out from page 97 to page 212 of the 2025 Annual Report). By virtue of this Supplement, those audited annual consolidated and non-consolidated financial statements (including the directors' report, auditor's report thereon and notes thereto) as set out on the pages specified above shall be deemed to be incorporated in, and form part of, the Information Memorandum. A copy of the 2025 Annual Report has been filed with the FCA and is available for viewing at https://www.boq.com.au/content/dam/boq/files/shareholder-centre/2025/25-annual-report.pdf.

If any information set out on the pages of the 2025 Annual Report specified above itself incorporates any information or other documents therein, either expressly or implicitly, such information or other documents will not form part of the Information Memorandum, except where such information or other documents are specifically incorporated by reference in, or attached to, the Information Memorandum by virtue of this Supplement. The non-incorporated parts of the 2025 Annual Report do not form part of the Information Memorandum and is given for information only. The non-incorporated parts of the 2025 Annual Report are either not relevant or are covered elsewhere in the Information Memorandum to which this Supplement relates.

Significant or Material Change

There has been no significant change in the financial performance or financial position of the Group since 31 August 2025 and no material adverse change in the prospects of the Issuer since 31 August 2025. In addition, there have been no recent events particular to the Issuer which are to a material extent relevant to the evaluation of the Issuer's solvency.