Trading Window

IDFCFIRSTBANK/SD/138/2026-27 September 29,2026 National Stock Exchange of India Limited BSE Limited Mumbai 400 051 Mumbai 400 001 NSE Symbol: IDFCFIRSTB BSE Scrip Code: 539437 Sub.: Intimation of Board Meeting of IDFC FIRST Bank Limited (“Bank”) under Regulation 29 and Regulation 50 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended (“SEBI Listing Regulations”) and Closure of Trading Window. Dear Sir/ Madam, We would like to inform you that the meeting of the Board of Directors of the Bank will be held on Saturday, October 24, 2026, inter-alia, to consider and approve the Unaudited Standalone and Consolidated Financial Results of the Bank for the quarter and half year ended September 30, 2026, which shall be subject to Limited Review by the Joint Statutory Auditors. In terms of the Code of Conduct for Prohibition of Insider Trading of the Bank, formulated and adopted under the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended, the Trading Window for dealing in securities of the Bank would remain closed for Designated Persons and their immediate relatives etc. from October 01, 2026, till October 26, 2026 (both days inclusive) and shall re-open thereafter. Please take the above on record. Yours faithfully, For IDFC FIRST Bank Limited Satish Gaikwad General Counsel and Company Secretary IDFC FIRST Bank Limited Corporate Office: IDFC FIRST Bank Tower, (The Square), C-61, G Block, Bandra-Kurla Complex, Bandra (East), Mumbai - 400 051. Tel: +91 22 7132 5500 Registered Office: KRM Towers, 7th Floor, No.1, Harrington Road, Chetpet, Chennai - 600 031. Tel: +91 44 4571 6477 CIN: L65110TN2014PLC097792| E-mail: bank.info@idfcfirstbank.com | Website: www.idfcfirst.bank.in