Indigrid Infrastructure Trust has informed the Exchange regarding Disclosure of material issue

INDIGRID INVESTMENT MANAGERS LIMITED Date: August 19, 2026 BSE Limited National Stock Exchange of India Ltd Department of Corporate Services Listing Department Phiroze Jeejeebhoy Towers Exchange Plaza, C/1, Block G, Dalal Street, Mumbai — 400 001 Bandra-Kurla Complex, Bandra (East), Mumbai — 400 051 BSE Scrip Code – 540565, 937527, 937529, 937531, 937533, 937535, 937537, 937539, 937541 976647, 976558, 976557, 976556, 975765, 975400, 975399, 975044, 975036, 974781, 974630, 974631, 973450, 973269, 958219, 976972, 976811, 976810, 976689 and 976809 NSE SYMBOL – INDIGRID, INDIGRID/NE, INDIGRID/NF, INDIGRID/NG, INDIGRID/NH, INDIGRID/NI, INDIGRID/NJ, INDIGRID/NK and INDIGRID/NL Subject: Intimation - Proposed Issue of Non-Convertible Debt Securities (“Series AI and Series AJ”) Ref: Intimation dated February 12, 2026 - Outcome of the Board Meeting Dear Sir/ Madam, Pursuant to Regulation 51 of the Securities and Exchange Board of India (“SEBI”) (Listing Obligations and Disclosure Requirements) Regulations, 2015, and Regulation 23 of the SEBI (Infrastructure Investment Trusts) Regulations, 2014, as amended from time to time read with circulars and guidelines issued thereunder by the SEBI and such other law as may be applicable, we wish to inform you that the Board of Directors of IndiGrid Investment Managers Limited, the Investment Manager of IndiGrid Infrastructure Trust (“IndiGrid”) in its meeting held on February 12, 2026 approved borrowings upto INR 6,400 Crores (Indian Rupees Six Thousand Four Hundred Crores). In accordance with the above-mentioned approvals, IndiGrid proposes to issue the following series of Non- Convertible Debt Securities: • Series AI Debt Securities: INR 350,00,00,000 (Indian Rupees Three Hundred and Fifty Crores Only) • Series AJ Debt Securities: INR 750,00,00,000 (Indian Rupees Seven Hundred and Fifty Crores Only) You are requested to take the same on record. Thanking you, For and on behalf of the IndiGrid Investment Managers Limited (Representing IndiGrid Infrastructure Trust as its Investment Manager) Urmil Shah Company Secretary & Compliance Officer ACS-23423 CC to- 1. Axis Trustee Services Limited 2. IDBI Trusteeship Services Limited The Ruby, 2nd Floor, SW, 29, Senapati Bapat Universal Insurance Building, Ground Floor, Marg, Dadar West, Mumbai- 400 028 Sir P.M. Road, Fort, Mumbai – 400001 Maharashtra, India IndiGrid Investment Managers Limited Registered & Corporate Office: Unit No. 101, First Floor, Windsor, Village KoleKalyan, off CST Road, Vidyanagari Marg, Kalina, Santacruz (East), Mumbai – 400 098, Maharashtra, India CIN: U28113MH2010PLC308857 Ph: +91 72084 93885 | Email: complianceofficer@indigrid.com | www.indigrid.co.in