Notice convening the 66th Annual General Meeting ("AGM") of the Company

HINDUSTHAN INSULATORS & INDUSTRIES LIMITED ® (Formerly known as HINDUSTHAN URBAN INFRASTRUCTURE LIMITED) THE HINDUSTHAN GROUP Date: August 13, 2026 The Listing Department, BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai- 400001 Scrip Code: 539984 Sub: Integrated Annual Report for Financial Year (FY) 2025-26 along with Notice convening the 66th Annual General Meeting (“AGM”) of the Company This is in furtherance to our intimation dated July 21, 2026 wherein it was informed that the 66th Annual General Meeting (“AGM”) of the Company is scheduled to be held on Tuesday, September 08, 2026 through Video Conferencing/Other Audio Visual Means, in compliance with the applicable provisions. Pursuant to Regulation 34(1) of the SEBI (Listing Obligations and Disclosure Requirements), please find enclosed herewith the Integrated Annual Report of the Company for the financial year 2025-26 along with the Notice of 66th AGM, which are being sent through electronic mode to those Members whose e-mail addresses are registered with the Company/Registrar and Transfer Agent (RTA)/Depository Participants (DPs) as on Friday, August 07, 2026. The Integrated Annual Report including the Notice of 66th AGM is also available on the Company’s website at: https://hindusthaninsulators.com/investorrelation.aspx?mpgid=151&pgidtrail=151&catid=8 The same is for your intimation and records. Thanking you, Yours Faithfully, For Hindusthan Insulators & Industries Limited (Neha Kejriwal) Company Secretary & Compliance Officer M. No: F12381 Encl. as above Regd. Office: Kanchenjunga (7th Floor) 18, Barakhamba Road, New Delhi -110 001 CIN : L31300DL1959PLC003141 Contact: +91-11-23310001, 02, 04 & 05 I Email: hiil@hindusthan.co.in, investors@hindusthan.co.in I Website: www.hindusthaninsulators.com Insulators & Electricals Company: Faridabad Warehouse: Guwahati Warehouse: Gwalior: Bangalore: 1-8, New Industrial Area, 12/1 Milestone, Plot No. lC, Brahamaputra Industrial Area, Sy. No. 194, 195/1 & 196/1, P.B. No. 1, Mandideep - 462 045 Delhi Mathura Road, Industrial Park, P.O. Birla Nagar, Kannamangala Village, Bidarahalli (M.P.) Faridabad -121 003 Viii.: Silla, P.O. College Nagar, Gwalior -474 004 Hobli,Bangalore East Taluk, hiil.iec@hindusthan.co.in (Haryana) North Guwahati, (M.P.) Bangalore - 560 115 (Karnataka) hiil.fbdwh@hindusthan.co.in Distt. Kamrup -781 031 (Assam) hiil.gwl@hindusthan.co.in hiil.blr@hindusthan.co.in hiil.gwtwh@hindusthan.co.in HINDUSTHAN INSULATORS & INDUSTRIES LIMITED (Formerly known as Hindusthan Urban Infrastructure Limited) (An Enterprise of The Hindusthan Group) DECISIVE TURNAROUND TAKING THE COMPANY INTO A NEW ORBIT ... ..= Annual Report for Financial Year 2025-26 Disclaimer This document contains statements about expected future events and financials of Hindusthan Insulators & Industries Limited, which are forward-looking. By their nature, forward-looking statements require the Company to make assumptions and are subject to inherent risks and uncertainties. There is significant risk that the assumptions, predictions and other forward-looking statements may not prove to be accurate. Readers are cautioned not to place undue reliance on forward-looking statements as several factors could cause assumptions, actual future results and events to differ materially from those expressed in the forward-looking statements. Accordingly, this document is subject to the disclaimer and qualified in its entirety by the assumptions, qualifications and risk factors referred to in the Management Discussion and Analysis of this Annual Report. 33,854.37 6,568.85 H in Lakhs, Revenues from H in Lakhs, EBITDA in FY 2025-26 operations in FY 2025-26 Contents Introduction 2 Human resource management 34 Corporate snapshot 4 Environment social and governance 39 How we have grown across the years 8 Notice 43 The big picture 10 Board’s Report 69 Chairman’s message 16 Corporate Governance Report 87 Managing Director’s message 18 Management Discussion and Analysis Report 110 Chief Financial Officer’s review 23 Standalone Financial Statements 121 Business overview: High tension insulators division 26 Business overview: Real estate business division 32 To know more visit: www.hindusthaninsulators.com Corporate Information Board of Directors Mr. Raghavendra Anant Mody Chairman & Whole-time Director Mr. Deepak Kejriwal Managing Director Mr. Shyam Sunder Bhuwania Non-Executive, Non Independent Director Mr. Ratan Lal Nangalia Independent Director Mr. Shiv Shanker Aggarwal Independent Director Ms. Deepika Agrawal Independent Director Key Managerial Personnel (KMP) Mr. Shailendra Jhalani Chief Financial Officer Ms. Neha Kejriwal* Company Secretary & Compliance Officer Statutory Auditors M/s. K.N. Gutgutia & Co. Chartered Accountants Bankers Canara Bank HDFC Bank Yes Bank State Bank of India Registered Office Kanchenjunga (7th Floor) 18, Barakhamba Road, New Delhi - 110001 Works Insulators & Electricals Company (Mandideep, Madhya Pradesh) Faridabad Warehouse (Haryana) Guwahati Warehouse (Assam) Bangalore (Karnataka) Gwalior (Madhya Pradesh) Listing of Equity Shares BSE Limited Registrar & Share Transfer Agent Skyline Financial Services Private Limited D-153/A, 1st Floor, Okhla Industrial Area, Phase - 1, New Delhi - 110020 *Appointed with effect from April 24, 2026 INTRODUCTION India’s power transmission sector is entering a multi- year investment cycle. This cycle is being driven by renewable energy integration, grid modernisation, industrialisation and rising electricity demand. How HIIL is attractively placed to capitalise tT .B.tt c:::::C1::::::i Industry opportunity Market leadership Export growth India’s transmission infrastructure Established player in porcelain 175% export growth in FY 2025-26 expansion insulators 2 | Hindusthan Insulators & Industries Limited COMPANY OVERVIEW STATUTORY REPORTS FINANCIAL STATEMENTS These positive developments are creating a growing demand for critical power transmission components, including high-tension insulators. Hindusthan Insulators & Industries Limited (HIIL) is attractively placed to capitalise on this unprecedented sectorial opportunity. The Company has established itself as one of India’s leading manufacturers of electro-porcelain high-tension insulators (used in power transmission networks). Capacity expansion Strong Balance Sheet Financial position 21,780 MT, Kiln loading capacity Debt-free Returned to operating profitability. expansion Annual Report 2025-26 | 3 CORPORATE SNAPSHOT Hindusthan Insulators & Industries Limited. Possesses a rich experience of more than six decades. Reflected in consistently reliable products. The result is that the Company has established itself as a trusted partner to power utilities, EPC contractors and industrial customers. HIIL is entering a new phase in its existence. The Company is enhancing its manufacturing capacity and capabilities to address the evolving needs of modern high-voltage transmission networks. A new era begins now. 4 | Hindusthan Insulators & Industries Limited COMPANY OVERVIEW STATUTORY REPORTS FINANCIAL STATEMENTS Respect for Integrity and people ethics Customer Sustainability focus Core values Quality Accountability excellence Innovation Vision To be a leading company in the insulator industry by providing quality products and creating long-term value for customers, shareholders, employees, and society. The Company aims to grow its business through continuous improvement, customer satisfaction, and efficient operations. Going forward, the Company also plans to diversify into related businesses and undertake backward integration to strengthen its supply chain, reduce costs, and support sustainable growth. Mission ƒ To provide high-quality products and solutions to the power transmission and distribution sector. ƒ To achieve operational excellence through continuous improvement and innovation. ƒ To create long-term value for stakeholders through sustainable growth and responsible bus [Showing first 8,000 characters — download PDF for full document]