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September 18, 2026 BSE Limited National Stock Exchange of India Limited Listing Department Listing Department Phiroze Jeejeebhoy Towers Exchange Plaza, 5th floor Dalal Street Plot No. C/1, G Block Mumbai 400 001 Bandra-Kurla Complex Bandra (East) Mumbai 400 051 Dear Sir/Madam, Subject : : Filing of Annual Securities Report with Director of Kanto Regional Finance Bureau ICICI Bank Limited (the Bank) is required to file Annual Securities Report (ASR) with Kanto Regional Finance Bureau in Japan in accordance with Financial Instruments and Exchange Law of Japan. Consequently, today, the Bank has filed ASR for the Fiscal Year from April 1, 2025 through March 31, 2026 with Director of Kanto Regional Finance Bureau. The filing is available at https://disclosure2.edinet-fsa.go.jp/WZEK0040.aspx?S100YZTT, and the English translation is attached as Annexure. Yours sincerely, For ICICI Bank Limited Vivek Ranjan Leadership Team Encl.: as above. Copy to- (i) New York Stock Exchange (ii) Singapore Stock Exchange (iii) Japan Securities Dealers Association (iv) SIX Swiss Exchange Limited [Translation] ANNUAL SECURITIES REPORT (Report under Article 24, Paragraph 1 of the Financial Instruments and Exchange Law) For the Fiscal Year From: April 1, 2025 Through: March 31, 2026 as filed on September 18, 2026 through EDINET System ICICI Bank Limited (E05975) (This translation of the Annual Securities Report has been prepared solely for reference purposes and shall not have any binding force.) [Form No. 8] Cover Page Document Name: Annual Securities Report Complied Article: Article 24, Paragraph 1 of the Financial Instruments and Exchange Law Filed with: Director of Kanto Regional Finance Bureau Date of Filing: September 18, 2026 Fiscal Year: From April 1, 2025 to March 31, 2026 Corporate Name: ICICI Bank Limited Name and Title of Representative: Nilanjan Sinha General Counsel Location of Registered Office: ICICI Bank Tower, Near Chakli Circle, Old Padra Road, Vadodara 390 007, Gujarat, India Personal Name or Corporate Name Hironori Shibata, Attorney-at-Law of Attorney-in-Fact: Address or Location of Anderson Mori & Tomotsune Attorney-in-Fact: Otemachi Park Building 1-1, Otemachi 1-chome Chiyoda-ku, Tokyo Telephone Number: 03-6775-1039 Name of Person to Contact with: Satomi Umezu, Attorney-at-Law Itaru Hasegawa, Attorney-at-Law Shogo Toyooka, Attorney-at-Law Yukako Fukumoto, Attorney-at-Law Place to Contact with: Anderson Mori & Tomotsune Otemachi Park Building 1-1, Otemachi 1-chome Chiyoda-ku, Tokyo Telephone Number: 03-6775-1247 Place(s) for Public Inspection: Not applicable Notes: [“Certain Definitions” has been inserted here from pages 3 ~ 4 of Form 20-F.] 1. In this Annual Securities Report, all references to “we”, “our”, and “us” are to ICICI Bank Limited and its consolidated subsidiaries and other consolidated entities under generally accepted accounting principles in India (“Indian GAAP”). In the financial statements contained in this Annual Securities Report and the notes thereto, all references to “the Company” are to ICICI Bank Limited and its consolidated subsidiaries and other consolidated entities under Indian GAAP. References to specific data applicable to particular subsidiaries or other consolidated entities are made by reference to the name of that particular entity. References to the “amalgamation” are to the amalgamation of ICICI, ICICI Personal Financial Services and ICICI Capital Services with ICICI Bank. References to “Sangli Bank” are to The Sangli Bank Limited prior to its amalgamation with ICICI Bank, effective April 19, 2007. References to “Bank of Rajasthan” are to the Bank of Rajasthan Limited prior to its amalgamation with ICICI Bank, effective from the close of business at August 12, 2010. References to “ICICI Bank” and “the Bank” are to ICICI Bank Limited on an unconsolidated basis. References to a particular “fiscal” year are to the year ended on March 31 of such a year. Unless otherwise indicated, all references to the “Board of Directors” and the “Board” are to the board of directors of ICICI Bank. References to “ICICI Group” are to ICICI Bank and its subsidiaries and other consolidated entities. All references to the “Companies Act”, the “FEMA”, the “Income Tax Act”, the “Banking Regulation Act” and the “Reserve Bank of India Act” are, respectively, to the Companies Act, 2013, the Foreign Exchange Management Act, 1999, the Income Tax Act, 1961, the Banking Regulation Act, 1949 and the Reserve Bank of India Act, 1934 as passed by the Indian Parliament and as amended from time to time. All references to “RBI” and the “Reserve Bank of India” are to the central banking and monetary authority of India. Pursuant to the issuance and listing of our securities in the United States under registration statements filed with the United States Securities and Exchange Commission (“SEC”), we file annual reports on Form 20-F which must include financial statements prepared under generally accepted accounting principles in the United States (“U.S. GAAP”), or financial statements prepared according to a comprehensive body of accounting principles with a reconciliation of net income and stockholders’ equity to U.S. GAAP. When we first listed our securities in the United States, Indian GAAP was not considered a comprehensive body of accounting principles under the United States securities laws and regulations. However, pursuant to a significant expansion of Indian accounting standards, Indian GAAP constitutes a comprehensive body of accounting principles. Accordingly, we have included in this Annual Securities Report, as in the annual reports for fiscal years 2024 through 2026, consolidated financial statements prepared according to Indian GAAP, with a reconciliation of net income and stockholders’ equity to U.S. GAAP and a description of significant differences between Indian GAAP and U.S. GAAP. Our annual report prepared and distributed to our shareholders under Indian law and regulations include unconsolidated Indian GAAP financial statements, management’s discussion and analysis of the Bank’s results of operations and financial condition based on the Bank’s unconsolidated Indian GAAP financial statements and our consolidated Indian GAAP financial statements. The economic and industry data and information presented in this document are sourced from government statistical releases, press releases and notifications by the Government of India, the Reserve Bank of India and other regulators, data available on the websites of the Government of India, Reserve Bank of India, other regulators and industry bodies. Certain terms are used interchangeably throughout this Annual Securities Report and, unless the context or a specific note indicates a distinct measurement basis, should be understood to have the same meaning wherever they appear. These include, without limitation, “term deposit” and “time deposit”; “stockholders’ equity” and “shareholders’ equity”; and “advances” and “loans”. Any variation in the usage of such terms is a matter of terminology only and does not denote any difference in meaning, and such terms should be read accordingly. 2. In this document, references to “U.S. $” are to United States dollars, references to “Rs.” are to Indian rupees, and references to “¥” or “JPY” are to Japanese yen. For convenience in reading this document, certain U.S. dollar amounts have been translated into Japanese yen at the mean of the telegraphic transfer spot selling and buying rates vis-à-vis customers at August 26, 2026 as quoted by MUFG Bank, Ltd. in Tokyo (U.S. $ 1 = ¥ 159.13), and certain rupee amounts have been translated into Japanese yen at the reference rate of Rs. 1 = ¥ 1.83 based on the foreign exchange rate as announced by MUFG Bank, Ltd. in Tokyo at August 26, 2026. 3. The fiscal year of the Company commences on April 1 and ends on March 31 of each year. References to a particular “fiscal” year are to our fiscal year ended March 31 of such year [Showing first 8,000 characters — download PDF for full document]