Moody''s Investor Service has issued an update on the long term corporate family rating and the instrument rating assigned to USD senior secured notes.

October 01, 2026 Corporate Relationship Department, Listing Department, BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1 Block G, Dalal Street, Mumbai 400 001. Bandra Kurla Complex, Bandra (E), Mumbai 400 051 Dear Sir / Ma’am, Ref: Scrip Code: 532947, Symbol: IRB Sub.: Intimation of Credit Rating by Moody’s Investor Services Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, it is hereby informed that Moody’s Investor Service (Moody's) has issued an update on the long-term Corporate Family Rating (CFR) of IRB Infrastructure Developers Limited (“Company”) and the instrument rating assigned to its USD senior secured notes due 2032 as below. The outlook is stable. Type of Rating Earlier Rating Revised Rating Long-Term Corporate Ba1 Ba1 Family Rating Instrument Rating Ba2 Ba2 For ratings rationale and other details, please refer to the communication from Moody’s at https://www.moodys.com/ You are requested to kindly take the above information on record. Thanking you, Yours Faithfully, For IRB Infrastructure Developers Limited Mehul Patel Company Secretary