Closure of Trading window for the purpose of declaration of un-audited financial results for the quarter ended on 30.09.2026.

30th September, 2026 To To BSE Ltd. National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra Kurla Complex. Dalal Street, Mumbai-400001 Bandra(E), Mumbai-400051 Scrip Code: 532914 Symbol: ARCOTECH Dear Sir/Madam, Sub: Intimation Regarding Closure of Trading Window Pursuant to the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 and amendments made thereunder and Company‘s Code of Conduct for Prevention of Insider Trading, the Trading Window of the Company shall remain closed for trading in Securities of the Company for the Designated Persons and their relatives from Thursday, 1st October, 2026 till 48 hours after the declaration of the un-audited financial results for the quarter ending on 30th September, 2026. Accordingly, all the Designated Persons of the Company and their relatives have been advised not to trade in the Securities of the Company during the aforesaid period of closure of Trading Window. Kindly take the same on your records, Thanking you. Yours faithfully, For ARCOTECH LIMITED NIDHI JAIN Company Secretary and Compliance Officer