Agreements

Date: September 29, 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: Execution of Project Implementation / Management Agreements with IRB InvIT Fund to act as the Project Manager. We refer to our earlier disclosures dated July 2, 2026, regarding the approval to enter into Project Implementation / Management Agreements (“PIA”) with IRB InvIT Fund (“Public InvIT”) to act as the Project Manager, in pursuance to the Securities and Exchange Board of India (Infrastructure Investment Trusts) Regulations, 2014, as amended, in connection with the projects operated by Solapur Yedeshi Tollway Limited (“SYTL”) and CG Tollway Limited (“CGTL”) (collectively referred as “Project SPVs”), as the Project SPVs of the Public InvIT, post transfer of the Project SPVs from the IRB Infrastructure Trust to the Public InvIT for the balance concession period. Please note that the Company has now executed the Project Implementation / Management Agreements to act as the Project Manager in respect of the projects operated by each of the Project SPVs, post completion of the transfer of 100% of the equity share capital of each of the Project SPVs from the IRB Infrastructure Trust to the Public InvIT. The details of the aforesaid approval for execution of project implementation agreements to act as Project Manager, as required in pursuance of SEBI Master circular no. HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated January 30, 2026, are annexed herewith as Annexure I. You are requested to kindly take note of the same. For IRB Infrastructure Developers Limited Mehul Patel Company Secretary Encl. as above Annexure I Details of Project Implementation Agreement a) name(s) of parties with whom the Project SPVs namely - agreement is entered; 1. Solapur Yedeshi Tollway Limited (“SYTL”), 2. CG Tollway Limited (“CGTL”) b) purpose of entering into the agreement; The Company entering into the project implementation agreements for each of: 1. SYTL - Four Laning of Solapur to Yedeshi section of NH-211 from km 0.000 to km 100.000 (Design Length 98.717 km) in the State of Maharashtra under NHDP Phase IV on Design, Build, Finance, Operate and Transfer (DBFOT) Toll basis. 2. CGTL – Six Laning of Kishangarh Udaipur Ahmedabad Section from km 90.000 (near Gulabpura) to km 214.870 (end of Chittorgarh Bypass) of NH-79 in the State of Rajasthan Package-2 under NHDP Phase – V on BOT (Toll) mode. c) shareholding, if any, in the entity with None whom the agreement is executed; d) significant terms of the agreement (in Approximately, Rs.2,663 crore on fixed price basis brief) special rights like right to appoint (inclusive of applicable taxes) over the balance directors, first right to share subscription concession period, which is approximately 18 years in case of issuance of shares, right to on weighted average life. restrict any change in capital structure etc.; e) Whether the said parties are related to No, the said parties are not related to promoter / promoter/promoter group/ group promoter group / group companies in any manner. companies in any manner. If yes, nature of relationship; f) whether the transaction would fall It is not a related party transaction under the SEBI within related party transactions? If yes, (Listing Obligations and Disclosure Requirements) whether the same is done at “arm’s Regulations, 2015. length” g) in case of issuance of shares to the None parties, details of issue price, class of shares issued; h) any other disclosures related to such Not Applicable agreements, viz., details of nominee on the board of directors of the listed entity, potential conflict of interest arising out of such agreements, etc.; i) in case of termination or amendment of Not Applicable agreement, listed entity shall disclose additional details to the stock exchange(s): i. name of parties to the agreement; ii. nature of the agreement; iii. date of execution of the agreement; iv. details of amendment and impact thereof or reasons of termination and impact thereof.