The Company will conduct earnings call at 04:00 p.m. IST on July 30, 2026.

July 27, 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 / Madam, Re.: Scrip Code: 532947; Symbol: IRB Sub.: Intimation of Earnings Call for investors / analysts This is to inform you that the Company will conduct earnings call at 04:00 pm IST on July 30, 2026. The details of earnings call are enclosed herewith. Kindly take the same on record. Thanking You. For IRB Infrastructure Developers Limited Mehul Patel Company Secretary Encl.: As above IRB Infrastructure Developers to announce Q1FY27 results on Thursday 30thJuly, 2026. July 27, 2026, Mumbai: IRB Infrastructure Developers Ltd. (Reuters: IRBI.BO, Bloomberg: IRB:IN, NSE: IRB, BSE: 532947) will announce results for the quarter ended June 30th, 2026, on Thursday, July 30th 2026. The results will also be available on the Company website: www.irb.co.in. Earnings call (4.00 p.m. IST on July 30th, 2026) The Company will conduct an earnings call at 4.00 p.m. IST on Thursday, July 30th, 2026. To participate in this conference call, please dial the numbers provided below, ten minutes ahead of the scheduled start time. The operator will provide instructions for participation and process for asking questions. A transcript of this conference call will be available on the website subsequently. Summary of events Event Date & Time Telephone number/Website Earnings Release and July 30th, 2026 www.irb.co.in Earnings Presentation Universal Number: July 30th, 2026 at 4.00 Earnings Conference Call +91 22 6280 1341/+91 22 7115 p.m.; Duration – 45 minutes 8242 Pre‐registration details Can register in advance Click here for Diamond Pass Registration (To bypass wait time) Available by Transcript of Earnings Call www.irb.co.in August 6th , 2026 Copy-Paste below URL into a browser address bar for pre-registration. https://services.choruscall.in/DiamondPassRegistration/register?confirmationNumber=8441546&linkSe curityString=4862348b98 For more information, please visit www.irb.co.in or contact: Mayank Vaswani / Suraj Digawalekar CDR, India Tel: +91 98209 40953 / +91 98211 94418 Email: mayank@cdr-india.com / suraj@cdr-india.com Disclaimer: Certain statements made on the call/presentation may be forward-looking statements. Such forward-looking statements are subject to certain risks and uncertainties like government actions, local, political, or economic developments, technological risks, and many other factors that could cause the actual results to differ materially from those contemplated by the relevant forward- looking statements. The Company will not be in any way responsible for any action taken based on such statements and undertakes no obligation to publicly update these forward-looking statements to reflect subsequent events or circumstances.