Updates

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 Subject: Update - Company sponsored IRB InvIT Fund completes Fund-Raise through Institutional Placement and Preferential Allotment of Units We refer to the earlier disclosure dated July 2, 2026, regarding IRB InvIT Fund (“Public InvIT”), Sponsored by the Company. Please find enclosed a copy of an update provided by Public InvIT regarding the successful completion of fund raising of Rs. 2,351 Crs through Institutional Placement and Preferential Allotment of Units. Please find enclosed a press release issued by the Company in this regard. You are requested to kindly take note of the same. Thank you, For IRB Infrastructure Developers Limited Mehul Patel Company Secretary Encl. as above Press Release IRB Infra sponsored IRB InvIT Fund successfully completes Fund- Raise of Rs.2,351Crs through Institutional Placement and Preferential Allotment of Units Mumbai, September 29, 2026: IRB Infrastructure Developers Limited, India’s premier and largest highway infrastructure assets development and management platform, has announced that its sponsored Public InvIT, IRB InvIT Fund, has successfully raised Rs.2,351Crs through an Institutional Placement (“IP”) and Preferential Allotment of Units. The total fund-raise of Rs.2,351Crs comprises the following: Particulars Amount (In Crs Rs) Qualified Institutional Placement (QIP) 2,000 Preferential Allotment 351 Total Fund-Raise 2,351 Commenting on the development, Mr. Virendra D. Mhaiskar, Chairman & Managing Director of the Company said, “It is another testament to the robust trust and credibility that IRB Group has established over the past three decade, alongside the enduring goodwill earned among global and domestic investors. It highlights strong investor confidence in India’s infrastructure growth story and validates the InvIT platform as a credible, scalable and transparent vehicle for long-term infrastructure investment.” He further said, “This transfer is an integral part of our B.E.S.T. strategy focussing on portfolio growth through strategic asset monetization. The capital unlocked through this transaction will empower IRB Infrastructure Trust (Private InvIT) to pursue new growth opportunities efficiently to fund projects in the next phase of expansion.” This is the second fund-raise activity by the Company Sponsored IRB InvIT Fund since its launch and listing way back in year 2017; the first one was last year, when IRB InvIT raised Rs.4,253Crs for acquiring three highway assets of Rs.8,643Crs enterprise value from IRB Infrastructure Trust. Further, to maintain its (approx.) 16% stake in IRB InvIT Fund, the Company has invested Rs.351Crs through preferential allotment of units of IRB InvIT Fund. The fund-raise witnessed strong and broad-based participation from both domestic and international investors, reflecting the confidence of a diverse set of marquee long-term institutional investors, including pension funds, insurance companies, mutual funds, and several family offices. Press Release Highlights of the IP: • Total Funds Raised through IP: Rs.2,351Crs • Use of proceeds: Partly fund the acquisition of two BOT highway assets, Viz., Solapur Yedeshi NH211 and Chittorgarh Gulabpura NH79 from the IRB Infrastructure Trust In addition, the Company sponsored IRB Infrastructure Trust (Private InvIT) is expected to receive approximately Rs.2,744Crs as equity consideration as the Seller of the highway assets, upon completion of the transaction. This infusion will enable the Private InvIT to pursue new highway projects , further strengthening the Group’s development pipeline and growth prospects. To reiterate, the Company is a Sponsor and Project Manager of the IRB InvIT Fund. About IRB Group: IRB Group is India’s leading and largest integrated infrastructure assets platform in the roads and highways sector, with a current portfolio of 27 revenue-generating highway assets aggregating to approx. ₹940 billion across 13 Indian states. With approximately 1.5 million vehicle crossings daily across its assets, the Group accounts for nearly one-tenth of India’s total toll revenue. Having successfully completed its asset creation phase, the Group has entered a cash-harvesting phase, supported by its InvIT monetization strategy and sponsor-led operating leverage. With a weighted average residual concession life of approximately 21 years, the portfolio provides strong visibility of long-term cashflows through predictable toll revenues, recurring O&M income and growing InvIT distributions. The Group has a clear roadmap to expand its asset base to approximately Rs.1,400 billion by FY2029 with asset churn strategy and reinvesting proceeds into new opportunities to drive sustainable growth and long-term value creation. For further details, please contact: • Tejal Divte, Concept PR, 99305 51440, tejal@conceptpr.com • Vivek Devasthali, Head, Corporate Communications, 99300 80099, vivek.devasthali@irb.co.in Disclaimer: Except for the historical information contained herein, statements in this communication and any subsequent discussions, which include words or phrases such as ‘will’, ‘aim’, ‘will likely result’, ‘would’, ‘believe’, ‘may’, ‘expect’, ‘will continue’, ‘anticipate’, estimate’, ‘intend’, ‘plan’, ‘contemplate’, ‘seek to’, ‘future’, ‘objective’, ‘goal’, ‘likely’, ‘project’, ‘on-course’, ‘should’, ‘potential’, ‘pipeline’, ‘guidance’, ‘will pursue’ ‘trend line’ and similar expressions or variations of such expressions may constitute ‘forward-looking statements’. The forward-looking statements involve a number of risks, uncertainties and other factors that could cause actual results to differ materially from those suggested by the forward-looking statements. These risks and uncertainties include but are not limited to the IRB Infrastructure Developers Limited and/ or its Associates’ ability to successfully implement its strategy, its growth and expansion plans, obtain regulatory approvals, provisioning policies, technological changes, investment and business income, cash flow projections, exposure to market risks as well as other risks. In addition, the consummation of the transactions described herein is subject to various conditions precedent. IRB Infrastructure Developers Limited does not undertake any obligation to update forward-looking statements to reflect events or circumstances after the date thereof. Press Release These materials are not a prospectus, a statement in lieu of a prospectus, an offering circular, an invitation or an advertisement or an offer document under the Indian Companies Act, 2013 together with the rules and regulations made thereunder, the Securities and Exchange Board of India (Issue of Capital and Disclosure Requirements) Regulations, 2009, as amended, or any other applicable law in India. 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 Ref.: Scrip Code: 540526, Symbol: IRBINVIT Sub: Institutional placement of units (the “Units” and such institutional placement, “ Issue”) of IRB InvIT Fund (“Trust”) under the Securities and Exchange Board of India (Infrastructure Investment Trusts) Regulations, 2014, as amended (“SEBI InvIT Regulations”) and the master circular issued by the Securities and Exchange Board of India bearing number SEBI/HO/DDHS-PoD-2/P/CIR/2025/102 dated July 11, 2025, as amended (“Master Circular”) In continuation of our earlier letter dated September 24, 2026 read with the letter dated September 28, 2026 in relation to the Issue, we wish to inf [Showing first 8,000 characters — download PDF for full document]