Submission of Security Cover as per Regulation 54 of the SEBI (LODR) Regulations, 2015 for the quarter ended on June 30, 2026

INDIGRID INVESTMENT MANAGERS LIMITED Date- August 12, 2026 BSE Limited National Stock Exchange of India Ltd Phiroze Jeejeebhoy Towers Exchange Plaza, C/1, Block G, Dalal Street, Mumbai- 400 001, Bandra-Kurla Complex, Bandra (East), Mumbai- 400 051, Maharashtra, India Maharashtra, India 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: - Submission of Security Cover as per Regulation 54 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 for the quarter ended on June 30, 2026 Dear Sir/ Madam, According to the Regulation 54 of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“LODR”) read with SEBI Circular No. SEBI/HO/MIRSD/MIRSD_CRADT/CIR/P/2022/67 dated May 19, 2022 and other circulars or guidelines as may be applicable, we hereby inform that IndiGrid Infrastructure Trust has maintained the ‘Security Cover’ for the quarter ended on June 30, 2026 as per the terms and conditions specified in the Debenture Trust Deed(s) and the security cover certificate provided by the Auditors in this regard is enclosed herewith. You are requested to kindly take note of the same. Thanking you, For & on behalf of the IndiGrid Investment Managers Limited (Representing IndiGrid Infrastructure Trust as its Investment Manager) Urmil Shah Company Secretary and Compliance Officer ACS- 23423 Copy 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 Chartered Accountants One International Centre Tower 3, 31stFloor Senapati Bapat Marg Elphinstone Road (West) Mumbai 400 013 Maharashtra, India Tele: + 91 22 6185 4000 Fax: + 91 22 6185 4101 Independent Auditor's Report on Security cover, Book Value of Assets and Compliance with Respect to Financial Covenants as at June 30, 2026 for submission to IDBI Trusteeship Services Limited (the 'Debenture Trustee') The Board of Directors, IndiGrid Investment Managers Limited (As the Investment Manager of IndiGrid Infrastructure Trust) Unit No 101, First Floor, Windsor Village, Kole Kalyan Off CST Road, Vidyanagari Marg, Santacruz (East), Mumbai, Maharashtra - 400 098 1. This certificate is issued in accordance with the terms of our engagement letter dated July 22, 2026. 2. We, Deloitte Haskins & Sells Chartered Accountants Registration Number 117364W/W-100739), the Statutory Auditors of IndiGrid Infrastructure IndiGrid Investment Managers Limited the accompanying Statement showing 'Annexure A - Security Cover as per the terms of Debenture Trust Deeds/Debenture Security Trust Deed, Compliance with financial covenants and book value of assets for secured redeemable listed non-convertible debenture securities as at June 30, 2026' (hereinafter referred to as the "Statement" or "Annexure A") in respect of Listed Debt Securities of the Trust as at June 30, 2026 and has been initialed by us for identification purpose only. The Statement is prepared by the Investment Manager from the unaudited books of accounts and other relevant records and documents maintained by the Trust as at June30, 2026pursuant to requirements of Circular no. SEBI/HO/DDHS-PoD-1/P/CIR/2025/117 dated August 13, 2025 issued by Securities and Exchange Board of India in terms of regulation 54 read with regulation 56(1)(d) of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 and Regulation 15(1)(t) of Securities and Exchange Board of ission to IDBI Trusteeship Services Limited, Debenture Trustee of the above mentioned Listed Debt Securities (hereinafter referred to as with whom the Trust has entered into agreements ("Debenture Trust Deeds"). The responsibility for compiling the information contained in the Statement is of the Management of the Investment Manager. 3. The preparation of the Statement is the responsibility of the management of the Investment Manager, including the preparation and maintenance of all accounting and other relevant supporting records and documents. This responsibility includes the design, implementation and maintenance of internal control relevant to the preparation and presentation of the Statement and applying an appropriate basis of preparation; and making estimates that are reasonable in the circumstances. 4. The management of the Investment Manager is also responsible for ensuring that the Trust complies with all the relevant requirements of the SEBI Regulations and for providing all relevant information to the Debenture Trustees and for complying with all the covenants as prescribed in the terms of Debenture Trust Deed. Regd. Office: 19thfloor, Shapath -V, Opp. Karnavati Club, S. G. Highway, Ahmedabad 380 015, Gujarat, India. Deloitte Haskins & Sells Chartered Accountants LLP is registered with Limited Liability having LLP Identification No. AAX-2454 5. Pursuant to the requirements of Circular no. SEBI/HO/DDHS-PoD-1/P/CIR/2025/117 dated August 13, 2025 issued by Securities and Exchange Board of India, our responsibility for the purpose of this certificate is to provide a limited assurance and to conclude as to whether: a. the Trust has maintained hundred percent security cover as on June 30, 2026 as per the terms of Debenture Trust deeds. b. the Trust is in compliance with the list of financial covenants as on June 30, 2026, as mentioned in respective Debenture Trust Deeds. c. Book values of assets as included in the Statement are in agreement with the books of account underlying the unaudited separate financial statements of the Trust as at June 30, 2026. 6. The standalone and consolidated financial results of the Trust for the quarter ended June 30, 2026, have been reviewed by us on which we have issued an unmodified review report vide our report dated August 12, 2026. Our review of above-mentioned financial results was conducted in accordance with the Standard on Review Engagement (SRE) 2410 "Review Interim Financial Information Performed by the Independent Auditor of the Entity" issued by the Institute of Chartered Accountants of India. This Standard requires that we plan and perform the review to obtain moderate assurance as to whether the results are free from material misstatement. 7. The engagement involves performing procedures to obtain sufficient appropriate evidence to provide limited assurance on the Statement as mentioned in paragraph 5 above. The procedures performed vary in nature and timing from, and are less in extent than for, a reasonable assurance engagement. Consequently, the level of assurance obtained in a limited assurance engagement is substantially lower than the assurance that would have been obtained had a reasonable assurance engagement been performed. Accordingly, we have performed the following procedures in relation to the statement: a. Obtained the Statement from the management. b. Verified that the information contained in the statement have been accurately extracted from the unaudited books of accounts of the Trust as at June30, 2026 and other relevant records and documents maintained by the Trust deeds, in the normal course of its business. c. Verified the arithmetical accuracy of the informa [Showing first 8,000 characters — download PDF for full document]