Action(s) taken or orders passed

Date: 01/10/2026 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, In compliance with Regulation 30 of the Listing Regulations read with SEBI Circular no. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated 30th January 2026, we are enclosing a disclosure in Annexure-I to this letter. 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 – I Disclosure of Information pursuant to Regulation 30 of the SEBI Listing Regulations read with SEBI circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated 30th January 2026: a) Name of the Authority; Heena Talwar Assistant Commisioner , Jurisdiction: Mohali-1, Ropar : Punjab b) nature and details of the action(s) taken, Notice U/s 73 (1), of the Central goods and initiated or order(s) passed Serice Tax Act 2017 (Punjab GST Act, 2017 ) c) date of receipt of direction or order, including 01.10.2026 ( Online on GST Portal ) any ad-interim or interim orders, or any other communication from the authority; d) details of the violation(s)/contravention(s) DRC-01 for the FY-2022-23 issued towards committed or alleged to be committed; Mismatch of Sales declared in GSTR 1 and eway bill issued and ITC claimed on supplies under section 17(5) blocked credit e) impact on financial, operation or other 82,976,414.10/- ( Basic – 45,591,436.32+ activities of the listed entity, quantifiable in Interest-32,825,834.15+Penalty -45,59,143.63 ) monetary terms to the extent possible. 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.