Update on Credit Ratings.

Ref. No.: BBL/SEC/167/2026-27 September 25, 2026 BSE Limited National Stock Exchange of India Limited Dept. of Corporate Services The Listing Department Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, Block G, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai - 400 001 Mumbai - 400 051 BSE Scrip Code: 541153 NSE Symbol: BANDHANBNK Dear Sir/Madam, Sub.: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Update on Credit Ratings Please be informed about the rating updates received from ICRA Limited (‘ICRA’), vide its communication dated September 25, 2026, on instruments of Bandhan Bank Limited (the ‘Bank’), as mentioned hereunder: Summary of rating action by ICRA: Instrument Rated Amount Rating Rating Action (Rs. in Crore) & Outlook Non-Convertible Debentures 75 [ICRA] AA- (Stable) Reaffirmed Certificates of Deposit 3,000 [ICRA] A1+ Reaffirmed Rating Rationale as published by ICRA is available at the following link: https://www.icra.in/Rationale/ShowRationaleReport?Id=145844. You are requested to take note of the above. This disclosure is being simultaneously uploaded at the Bank’s website, www.bandhan.bank.in. Thank you. Yours faithfully, for Bandhan Bank Limited Indranil Banerjee Company Secretary