Closure of Trading Window from 1st October,2026 till the end of 48 hours after declaration of unaudited standalone financial results for the half year ending September 30,2026

Austere Systems Limited (Formerly known as Austere Systems Private Limited) Date: 30th September 2026 BSE Limited, SME Platform Department of Corporate Affairs 20th Floor, P. J. Towers, Dalal Street, Mumbai – 400 001 Scrip Code: 544505 Sub.: Intimation of Closure of Trading Window under Regulation 9 of Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015. Dear Sir/ Madam, In accordance with the provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015 read with the Company’s Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons and their immediate relatives, the Trading Window in respect of dealings in the securities of the Company shall remain closed from 1st October, 2026 till the end of 48 hours after the declaration of unaudited Standalone Financial Results of the Company for the half year ending on 30 September, 2026. The date of Board Meeting for declaration of the unaudited Financial Results of the Company for the half year ended 30th September, 2026, will be intimated in due course. You are requested to take the above on record. Thanking you, Yours faithfully, For Austere Systems Limited (Formerly known as ‘Austere Systems Private Limited’) Sneha Goenka Company Secretary & Compliance Officer M. No. A48476 Registered Office Address: Unit No 301-303, 3rd Floor, Plot No 34, A Square, Sector- 26, Pradhikaran, Nigdi, Pune, Maharashtra-411044 Corporate Office Address: Unit No:112-114,1st Floor, Vipul Plaza, Golf Course Road, Suncity Sector-54, Gurugram, Haryana-122002 Panchkula Office Address: Third Floor, SCO 3, Swastik Vihar, Sector-5, MDC, Panchkula-134109, Haryana GST NO. 06AANCA5362K1ZD, CIN: L74900PN2015PLC155381 Email Id: Hr@austere.co.in, Accounts@austere.co.in Contact no: Pune- 020-27656299, Gurgaon- 0124-4152526 www.austeresystems.com