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

INDIGRID INVESTMENT MANAGERS LIMITED Date: August 20, 2026 B S E Limited National Stock Exchange of India Limited Department of Corporate Services Listing Department Phiroze Jeejeebhoy Towers, Exchange Plaza, C/1, Block G, Dalal Street, Bandra-Kurla Complex, Bandra (East), Mumbai — 400 001 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 - Allotment of Non-Convertible Debt Securities (“Series AI and Series AJ”) Ref: Intimation dated August 19, 2026 - Proposed Issue of Non-Convertible Debt Securities (“Series AI and Series AJ”) Dear Sir/ Madam, Pursuant to the Regulation 51 of Securities and Exchange Board of India (“SEBI”) (Listing Obligations and Disclosure Requirements) Regulations, 2015, Regulation 23 of 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, the Allotment Committee of IndiGrid Investment Managers Limited, the Investment Manager of IndiGrid Infrastructure Trust on August 20, 2026, has approved the allotment of following series of Non-Convertible Debt Securities: • Series AI Debt Securities: 35,000 (Thirty Five Thousand) Partly Paid-Up, Senior, Secured, Listed, Rated, Redeemable, Non-Convertible Debt Securities or Debentures having a face value of INR 1,00,000 (Indian Rupees One Lakh Only) each aggregating upto INR 350,00,00,000 (Indian Rupees Three Hundred and Fifty Crores Only) and having paid up value of INR 20,000 (Indian Rupees Twenty Thousand Only) each, aggregating up to INR 70,00,00,000 (Indian Rupees Seventy Crores Only); and • Series AJ Debt Securities: 75,000 (Seventy Five Thousand) Partly Paid-Up, Senior, Secured, Listed, Rated, Redeemable, Non-Convertible Debt Securities or Debentures having a face value of INR 1,00,000 (Indian Rupees One Lakh Only) each aggregating upto INR 750,00,00,000 (Indian Rupees Seven Hundred and Fifty Crores Only) and having paid up value of INR 20,000 (Indian Rupees Twenty Thousand Only) each, aggregating up to INR 150,00,00,000 (Indian Rupees One Hundred and Fifty Crores Only) Brief details of the Series AI and Series AJ Debt Securities are captured below: Issuer IndiGrid Infrastructure Trust Series AI AJ Number of NCDs allotted 35,000 75,000 Tenure of the instrument 5 years 10 years Allotment Date August 20, 2026 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 INDIGRID INVESTMENT MANAGERS LIMITED Bullet repayment on August Bullet repayment on August Redemption 20, 2031 20, 2036 Coupon Rate 7.44% per annum, payable quarterly ‘CRSISL AAA/Stable’ by Crisil Ratings Limited & ‘ICRA Credit Rating AAA/Stable’ by ICRA Ratings Limited Partly paid-up, senior, secured, listed, rated, redeemable, non- Type of securities convertible debt securities or debentures Type of issuance Private Placement Basis Face Value INR 1,00,000 Whether proposed to be listed? If yes, Yes, the Debt Securities are proposed to be listed on BSE name of the stock exchange(s) 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- Axis Trustee Services Limited The Ruby, 2nd Floor, SW, 29, Senapati Bapat Marg, Dadar West, Mumbai- 400 028 Maharashtra, India IDBI Trusteeship Services Limited Universal Insurance Building, Ground Floor, Sir P.M. Road, Fort, Mumbai – 400001 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