Kindly refer the enclosed attachement

IDFCFIRSTBANK/SD/118/2026-27 August 18, 2026 National Stock Exchange of India Limited BSE Limited Mumbai 400 051 Mumbai 400 001 NSE Symbol: IDFCFIRSTB BSE Scrip Code: 539437 Sub: IDFC FIRST Bank Accesses International Debt Capital Markets with Maiden US$ 500 Million Notes Issuance Ref.: Disclosure under Regulation 30 of the SEBI (LODR) Regulations, 2015 Dear Sir / Madam, We are pleased to inform that IDFC FIRST Bank Limited (the “Bank”), acting through its IFSC Banking Unit, has successfully priced its US$ 500 Million Senior Notes (the “Notes”) on August 18, 2026. The transaction marks the Bank's maiden entry into the international debt capital markets and supports its strategy of diversifying its funding profile and expanding access to global sources of capital. The transaction witnessed strong participation from a diversified base of global institutional investors, reflecting investor interest in the issuance and confidence in the Bank's business model and growth strategy. Details of the Notes are provided in Annexure 1. Thanking You, Yours faithfully, For IDFC FIRST Bank Limited. Satish Gaikwad General Counsel and Company Secretary Encl.: As Above 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 Annexure 1 Particulars Details Issuer IDFC FIRST Bank Limited, acting through its IFSC Banking Unit Type of securities USD denominated Senior notes Type of issuance Reg S issuance on a private placement basis Size of the issue US$ 500 Million Whether proposed to be listed? If yes, name of the Vienna MTF and Global Securities Market of the India stock exchange(s) INX and/or Debt Securities Market of the NSE IX Tenure of the instrument - date of allotment and date Tenor: 3 years of maturity Date of allotment: 25 August 2026 Date of maturity: 25 August 2029 Coupon/interest offered, schedule of payment of Coupon: 5.625% coupon/interest and principal Interest payment dates: 25 August and 25 February of each year, commencing on 25 February 2027 Charge/security, if any, created over the assets Unsecured Special right/interest/privileges attached to the Not applicable instrument and changes thereof Delay in payment of interest / principal amount for a NIL period of more than three months from the due date or default in payment of interest / principal; Details of any letter or comments regarding No payment/non-payment of interest, principal on due dates, or any other matter concerning the security and /or the assets along with its comments thereon, if any; Details of redemption of preference shares indicating Unless previously redeemed, or purchased and the manner of redemption (whether out of profits or cancelled, the Notes will be redeemed on the maturity out of fresh issue) and debentures; date. Any cancellation or termination of proposal for NIL issuance of securities including reasons thereof 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