Credit Rating

August 12, 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, Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 In continuation to the disclosure made by ICICI Bank Limited (“Bank”) on August 6, 2026, with respect to the pricing of USD 300 million Senior Unsecured Fixed Rate Notes (“Notes”) under the Bank’s USD 7.5 billion Global Medium Term Note Programme, please note that Moody’s Ratings and S&P Global Ratings have vide letters dated August 12, 2026, assigned ‘Baa3’ and ‘BBB’ rating to the Notes respectively. This is for your information and records. NOT FOR DISTRIBUTION IN THE UNITED STATES This document is not an offer of securities for sale in the United States. Any securities referred to herein have not been and will not be registered under the United States Securities Act of 1933, as amended (the “Securities Act”) or any United States state securities laws, and may not be offered or sold in the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and in accordance with any applicable United States state securities laws. There is no intention to register any securities referred to herein in the United States or to make a public offering of the securities in the United States. This document does not constitute an offer to sell or the solicitation of an offer to buy the Notes described herein. Yours sincerely, For ICICI Bank Limited Prachiti Lalingkar Company Secretary Copy to - (i) New York Stock Exchange (NYSE) (iii) Japan Securities Dealers Association (ii) Singapore Stock Exchange (iv) SIX Swiss Exchange Ltd