Retirement

Date: 12/10/2026 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 Subject: Intimation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements), Regulations 2015 – Superannuation of Senior Management Personnel (SMP) Dear Sir/Ma’am Pursuant to Regulation 30 read with Para A of Part A of Schedule III to the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), we hereby inform you that Mr Anil Kumar Chandani, President – Corporate Finance & Strategy of the Company, will be relieved of his duties with the Company upon attaining the age of superannuation at the close of business hours on 14th October 2026. Accordingly, he will cease to be a part of the Senior Management of the Company with effect from the close of business hours on 14th October 2026. The requisite details of the aforesaid change, as prescribed under the SEBI Listing Regulations read with the SEBI Master Circular No. HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated 30 January 2026, are enclosed herewith as Annexure A. We request you to take the above information on record as compliance with the applicable provisions of the SEBI Listing Regulations. Thanking You, 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) Corporate 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 Relevant details as required under Regulation 30 of the SEBI Listing Regulations SEBI Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 S.No. Particulars Details 1 Reason For Change viz. Mr. Anil Kumar Chandani, President – appointment, reappointment, Corporate Finance & Strategy, will be resignation, removal, death or relieved of his duties with the Company otherwise upon attaining the age of superannuation at the close of business hours on 14th October 2026. Accordingly, he will cease to be a part of the Senior Management of the Company with effect from the close of business hours on 14th October 2026. 2 Date of appointment / re- Cessation with effect from the close of appointment/cessation(as business hours on 14th October 2026, applicable) & term of upon superannuation. The relieving appointment/re-appointment letter is enclosed herewith. 3 Brief profile (in case of NA appointment) 4 Disclosure of relationships between NA directors (in case of appointment of a director) INTERARCH BUILDING SOLUTIONS LIMITED (Formerly known as Interarch Building Products Limited) Corporate 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.