General Updates

September 2, 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 This is further to the disclosures made by ICICI Bank Limited (the Bank) on February 28, 2026 and June 24, 2026 in connection with acquisition of additional shareholding of upto 2% in its subsidiary, ICICI Prudential Life Insurance Company Limited (ICICI Life). The Bank has, through multiple tranches executed between July 22, 2026 and September 2, 2026, completed the purchase of 29,015,693 equity shares of face value of ₹ 10/- each of ICICI Life, representing approximately 2.00% of ICICI Life’s equity share capital at June 30, 2026, for an approximate consideration of ₹ 14.70 billion, through the stock exchange mechanism. Following this, the Bank’s shareholding in ICICI Life stands at approximately 52.8%. Yours sincerely, For ICICI Bank Limited Prachiti Lalingkar Company Secretary Copy to - (i) New York Stock Exchange (iii) Japan Securities Dealers Association (ii) Singapore Stock Exchange (iv) SIX Swiss Exchange Limited