Disclosure under Regulation 30 of SEBI(LODR) Regulations, 2015 regarding bagging of an order.

Date: 08/10/2026 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: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) Dear Sir/ Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, we wish to inform you that the Company has secured an order from a customer. The name of the customer cannot be disclosed at this stage due to confidentiality obligations and commercial considerations. The details as required under SEBI Listing Regulations read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 as amended read with Regulation 30 of the (Listing Obligations and Disclosure Requirements) Regulations, 2015 is enclosed as Annexure A. This is for your information and records please. Thanking You, For INTERARCH BUILDING SOLUTIONS LIMITED (Formerly 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. Annexure A Disclosure in terms of Regulations 30 of SEBI Listing Regulations read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 as amended read with Regulation 30 of the (Listing Obligations and Disclosure Requirements) Regulations, 2015 Bagging/Receiving of Orders/Contracts S. No. Particulars Remarks 1 Name of the entity awarding the order(s)/contract(s); Due to commercial issue, the Company cannot disclose the name of the Customer. 2 significant terms and conditions of order(s)/contract(s) Approx. 10 months completion awarded in brief period. Complete Design, Engineering, Manufacturing, Supply, and Erection are in scope. 25% advance. 3 whether order(s) / contract(s) have been awarded Domestic by domestic/ international entity 4 Nature of order(s) / contract(s); Design, Engineering, Manufacturing, Supply & erection of Pre-Engineered Steel Building System for an Electronic Products manufacturing unit in South India. 5 Whether domestic or international; Domestic 6 time period by which the order(s)/contract(s) is to be Approx. 10 months executed; 7 broad commercial consideration or size of the Approximately Rs.59 Cr. including order(s)/contract(s); Taxes 8 Whether the promoter/ promoter group/group NO companies have any interest in that entity to whom the order(s)/contract(s) is awarded? If Yes, nature of interest and details thereof; 9 Whether the order(s)/contract(s) would fall within NA related party transactions? If yes, whether the same is done at “arm ’ s length” 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.