Allotment of 4,89,934 equity shares pursuant to exercise of ESOP.

IDFCFIRSTBANK/SD/120/2026-27 August 21, 2026 National Stock Exchange of India Limited BSE Limited Mumbai 400 051 Mumbai 400 001 NSE Symbol: IDFCFIRSTB BSE Scrip Code: 539437 Sub: Allotment of Equity Shares pursuant to Exercise of Stock Options under ‘IDFC FIRST Bank Limited - Employee Stock Option Scheme’ (“IDFC FIRST Bank - ESOS”) Ref: Disclosure under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended (“SEBI Listing Regulations”) Dear Sir/ Madam, We wish to inform that the duly authorized Committee of the Board of Directors of IDFC FIRST Bank Limited (‘Bank’) has on today i.e. August 21, 2026, approved the allotment of 4,89,934 equity shares of face value ₹10/- each, fully paid-up, to eligible employees upon exercise of their previously granted and vested stock options under the ‘IDFC FIRST Bank - ESOS’. These equity shares shall rank pari‑passu with the existing equity shares of the Bank in all respects. Post allotment of aforesaid equity shares, the issued and paid-up equity share capital of the Bank stands increased from ₹ 86,21,21,95,890/- comprising of 8,62,12,19,589 equity shares of ₹ 10/- each fully paid-up to ₹ 86,21,70,95,230/- comprising of 8,62,17,09,523 equity shares of ₹ 10/- each fully paid-up. You are requested to kindly take the above on record. Thanking You, 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, Tamil Nadu. Tel: +91 44 4571 6477 CIN: L65110TN2014PLC097792 | E-mail: bank.info@idfcfirstbank.com | Website: www.idfcfirst.bank.in