Result of Postal Ballot

August 03, 2026 Corporate Relationship Department, Listing Department, BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, C-1 Block G, Bandra Kurla Dalal Street, Mumbai 400 001 Complex, Bandra (E), Mumbai 400 051 Dear Sir / Madam, Ref.: Scrip Code: 532947, Symbol: IRB Subject: Results of Postal Ballot under Regulation 44 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir / Madam, In furtherance to our letter dated July 03, 2026, regarding notice of Postal Ballot dated July 02, 2026 (“Notice”), issued to the shareholders of the Company and pursuant to Section 110 and other applicable provisions of the Companies Act, 2013 and rules made thereunder and in compliance with the applicable circulars, voting through postal ballot by means of e-voting was conducted as per Notice sent to the Shareholders of the Company. We hereby submit voting results of the postal ballot in compliance with the provisions of Regulation 44 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. The voting results and the scrutinizer’s report are also being uploaded on the Company’s website i.e. www.irb.co.in and the resolution mentioned in the Notice is deemed to have been passed on the last day of e-voting i.e. August 03, 2026. In accordance with format prescribed under Regulation 44 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, the details of voting results on the resolutions mentioned in the Notice of the Company are furnished below: Date of Declaration of Voting Results of Postal Ballot August 03, 2026 Total number of shareholders on cut-off date (i.e. as on June 30, 2026) 15,58,755 No. of shareholders present in the meeting either in person or through proxy: Promoter and Promoter group Not App licable Public No. of shareholders attended the meeting through Video Conferencing: Promoter and Promoter group Not Applicable Public Resolution Item No. 1 – Ordinary Resolution: Material Related Party Transactions in relation to extension of the term of Project Implementation Agreements with 12 Project SPVs of IRB Infrastructure Trust. Resolution required: Ordinary Resolution Whether promoter/ promoter group are interested Yes in the agenda/ resolution? Catego Mode of No. of shares No. of votes % of No. of Votes - No. of % of % of ry Voting held polled Votes i n f a v our Votes - Votes Votes Polled against in again on favour st on outsta on votes nding votes polle shares polled d (1) (2) (3)= (4) (5) (6)= (7)=[( [(2)/(1) [(4)/(2) 5)/(2) Promot Remote - - - - - - er and E-Voting Promot Postal 3721363360 - - - - - - er Ballot Group Total - - - - - - Public - Remote 1972342320 30.23 1961430065 10912255 99.45 0.55 Instituti E-Voting onal Postal 6524297157 - - - - - - holder Ballot Total 1972342320 30.23 1961430065 10912255 99.45 0.55 Public- Remote 5120541 0.28 3600162 1520379 70.31 29.69 Non E-Voting Instituti Postal 1832339483 on - - - - - - Ballot Total 5120541 0.28 3600162 1520379 70.31 29.69 Total 12078000000 1977462861 16.37 1965030227 12432634 99.37 0.63 Please note that: 1. Voting rights on the shares transferred to ‘Unclaimed Suspense Account’ and those shares transferred to the ‘Investor Education and Protection Fund’ are frozen. 2. The votes polled does not include no. of votes abstained & invalid votes. 3. The aforesaid resolution was passed with requisite majority. 4. The percentages are rounded off to the nearest decimals. 5. No. of shareholders are not grouped on the basis of PAN. Request you to take the above on record and acknowledge receipt of the same. Thank you, Yours faithfully, For IRB Infrastructure Developers Limited Mehul Patel Company Secretary