Interarch Building Solutions Ltdhas informed BSE that the meeting of the Board of Directors of the Company is scheduled on 04/11/2026 ,inter alia, to consider and approve the Un-Audited Financial Results of the Company for the quarter & half year ended September 30, 2026, along with the Limited Review Report for the quarter ended September 30, 2026.

27th October’ 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: Intimation of Board Meeting as per Regulation 29 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Ma’am, Pursuant to Regulations 29 and 33 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, notice is hereby given that a meeting of the Board of Directors of the Company will be held on Wednesday, November 04, 2026, inter alia, to consider the following: 1. To consider and approve the Un-Audited Financial Results of the Company for the quarter & half year ended September 30, 2026, along with the Limited Review Report for the quarter ended September 30, 2026. Further, in accordance with the Company’s Code for Prevention of Insider Trading, the Trading Window for dealing in the Company’s securities has been closed from Thursday, October 1, 2026, and shall remain closed until 48 hours after the declaration of the Un-Audited Financial Results of the Company for the quarter & half year ended September 30, 2026. We request you to kindly take the above information on record and treat the same as compliance under the applicable provisions of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. For INTERARCH BUILDING SOLUTIONS LIMITED (Formerly known as Interarch Building Products Limited) ARVIND NANDA MANAGING DIRECTOR DIN: 00149426 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.