Newspapers advertisement pertaining to Un-Audited Financial Results for the quarter & half year ended September 30, 2026

Date: 5th November, 2026 To, To, National Stock Exchange of India Ltd., BSE Limited Exchange Plaza, C-1, Block G, Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Bandra (E), Dalal Street Mumbai – 400 051 Mumbai- 400001 NSE Scrip Symbol: INTERARCH BSE Scrip Code 544232 Sub: Newspapers advertisement pertaining to Un-Audited Financial Results for Quarter & Half year ended September 30, 2026. Dear Sir/ Madam, Pursuant to Regulations 30 and 47 of the SEBI (LODR) Regulations, 2015 as amended, we enclose copies of the newspapers advertisement pertaining to the Un-Audited financial results of the Company for the Quarter & Half Year ended on September 30, 2026 published in the Financial Express (English) and Jansatta (Hindi) on November 05, 2026. This is for your information and records. For INTERARCH BUILDING SOLUTIONS LIMITED (Formerly known as Interarch Building Products Limited) NIDHI KHANDELWAL COMPANY SECRETARY & COMPLIANCE OFFICER M.No.: A19279 Encl: a/a INTERARCH BUILDING SOLUTIONS LIMITED (Formerly known as Interarch Building Products Limited) Head Office : B-30, Sector 57, Noida - 201301, India. Tel.: +91 120 4170200, CIN: L45201DL1983PLC017029 Registered Office: Farm No-8, Khasra No. 56/23/2, Dera Mandi Road, Mandi Village, Tehsil Mehrauli, New Delhi - 110047, India.