Pursuant to the provisions of the SEBI (Prohibition of Insider Trading) Regulations, 2015 read with ICICI Bank Code on Prohibition of Insider Trading, the Trading Window for dealing in the securities of the Bank will remain closed for all Designated Persons of the Bank (including Directors) and their immediate relatives from October 1, 2026 to October 19, 2026 (both days inclusive).

September 22, 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: Board Meeting for approval of Financial Results Pursuant to the applicable provisions of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that the meeting of the Board of Directors of ICICI Bank Limited (“the Bank”) is scheduled to be held on Saturday, October 17, 2026, to, inter alia, consider and approve the unaudited financial results (standalone and consolidated) for the quarter and six months ending September 30, 2026. In view of the above and pursuant to the provisions of the SEBI (Prohibition of Insider Trading) Regulations, 2015 read with ICICI Bank Code on Prohibition of Insider Trading, the Trading Window for dealing in the securities of the Bank will remain closed for all Designated Persons of the Bank (including Directors) and their immediate relatives from October 1, 2026 to October 19, 2026 (both days inclusive). Yours sincerely, For ICICI Bank Limited Prachiti D. Lalingkar Company Secretary Copy to- (i) New York Stock Exchange (ii) Singapore Stock Exchange (iii) Japan Securities Dealers Association (iv) SIX Swiss Exchange Limited