General Updates

September 9, 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 ICICI Bank Limited (the Bank) has received approvals from the Reserve Bank of India (RBI), through different letters dated September 8, 2026 (received at 7:25 p.m.) permitting ICICI Prudential Asset Management Company Limited (Applicant) to acquire an “aggregate holding” of up to 9.95% of the paid-up share capital or voting rights in the following banks: Sr. no. Banking company 1 CSB Bank Limited 2 DCB Bank Limited 3 Kotak Mahindra Bank Limited 4 AU Small Finance Bank Limited The approvals require the Applicant to acquire major shareholding within a period of one year from the date of RBI letters failing which, the approvals would stand cancelled. The approvals are pursuant to the applications made in accordance with Reserve Bank of India (Commercial Banks - Acquisition and Holding of Shares or Voting Rights) Directions, 2025 dated November 28, 2025 (Master Direction). Accordingly, the term “aggregate holding” shall be construed as per the said Master Direction. You are requested to kindly take note of the above. Yours sincerely, For ICICI Bank Limited Prachiti Lalingkar Company Secretary C opy to- (i) New York Stock Exchange (iii) Japan Securities Dealers Association (ii) Singapore Stock Exchange (iv) SIX Swiss Exchange Limited