Analysts/Institutional Investor Meet/Con. Call Updates

Date: 06th 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 Subject: Submission of Audio recording of earnings conference call pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Dear Sir / Madam, In compliance with regulation 30 and 46(2)(oa) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that the audio recording of the conference call held today i.e 06th November ’2026 at 12:30 p.m. to discuss the un-audited financial results of the Company for the quarter & half year ended 30th September, 2026 is available on the website of the Company and can be accessed on the following link: https://www.interarchbuildings.com/investors#financial-information We request you to take the same on your record. For INTERARCH BUILDING SOLUTIONS LIMITED (Formerly known as Interarch Building Products Limited) NIDHI KHANDELWAL COMPANY SECRETARY & COMPLIANCE OFFICER M.No.: A19279 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.