Certificate under SEBI (Depositories and Participants) Regulations, 2018

IDFCFIRSTBANK/SD/148/2026-27 October 12, 2026 National Stock Exchange of India Limited BSE Limited Mumbai 400 051 Mumbai 400 001 NSE Symbol: IDFCFIRSTB BSE Scrip Code: 539437 Sub.: Certificate in terms of Regulation 74(5) of the Securities and Exchange Board of India (“SEBI”) (Depositories and Participants) Regulations, 2018, as amended. Dear Sir/ Madam, We would like to inform that the details of securities dematerialized / rematerialized during the quarter ended September 30, 2026, as required under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018, as amended, have been furnished by M/s. KFin Technologies Limited, Registrar & Transfer Agent (‘RTA’) of the Bank, to the Stock Exchanges where the shares of the Bank are listed. Letter confirming the same from the RTA dated October 09, 2026, are enclosed for your reference. Please take the above on record and acknowledge receipt of the same. 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, Maharashtra. Tel: +91 22 7132 5500 Registered Office: KRM Tower, 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 Qtr2/26-27/KTPL/IDK/74(5) Oct 09, 2026 The Company Secretary, IDFC FIRST BANK LIMITED IDFC FIRST Bank Tower (The Square) C 61, G Block, Bandra Kurla Complex Bandra (East) Mumbai -400051 Dear Sir, Sub: Certificate pursuant to Regulation 74 (5) of SEBI (Depositories and Participants) Regulations, 2018, as amended, for the quarter ended 30th September, 2026. With reference to the Regulation 74(5) of SEBI (Depositories and Participants) Regulations 2018, as amended, we hereby confirm that we have complied with the following actions within 15 days of receipt of share certificate(s) from the Depository Participants for the purpose of dematerialization. • Confirmed (approved/rejected) dematerialisation request. • The shares comprised in the certificate(s) dematerialized are listed on the Stock exchange(s) where the earlier issued shares are listed. • Mutilated and cancelled the share certificate(s) forwarded by the Depository Participants. • Substituted the name of depository as the registered owner in our records. Further, we have been certifying the same to the Depositories and Stock Exchanges in accordance with Regulations. Thanking you, For KFin Technologies Limited C Shobha Anand Vice President