Change in Auditors

29th September, 2026 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 SUB: COMPLETION OF TENURE OF EXISTING STATUTORY AUDITOR AND APPOINTMENT OF NEW STATUTORY AUDITOR Dear Sir / Madam, Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with Para A of Part A of Schedule III of said Regulations, we wish to inform you that:  The existing Statutory Auditors i.e. M/s. Amit Joshi & Associates (Firm Registration No. 004898N), Chartered Accountants, were appointed as the Statutory Auditors of the Company at the 40th Annual General Meeting held on September 29, 2021, for the second term of five consecutive years, to hold office until the conclusion of the 45th Annual General Meeting of the Company. Accordingly, upon conclusion of the 45th Annual General Meeting held on September 29, 2026, M/s. Amit Joshi & Associates ceased to be the Statutory Auditors of the Company.  The Company at its 45th AGM held on 29th September, 2026, has appointed M/s. Agarwal U R S & CO., (Firm Registration No.: 013910C), Chartered Accountants, as Statutory Auditors of the Company for the first term of 5 years in place of retiring auditors of Company, to hold office from the conclusion of this AGM till the conclusion of 50th Annual General Meeting of the Company to be held in the year 2031. The above agenda item was put to vote as an Ordinary Resolution and was passed with required number of votes. Further, a brief profile of Statutory Auditor is attached. FOR ARCOTECH LIMITED NIDHI JAIN Company Secretary & Compliance Officer M. No.: F11814 BRIEF PROFILE OF STATUTORY AUDITOR Name of Firm M/s. Agarwal U R S & CO., Chartered Accountants Constitution Partnership Firm Registration No. 013910C Name of Proprietor/Partner CA Sachinn K Agarwal Membership No. 514666 Address A – 77, 2nd Floor, Sector 4, Noida, 201301 Contact No. +91 91931 13753 E Mail sachinn@agarwalurs.com Date of Appointment Appointed with the approval of the shareholders at the 45th Annual General Meeting held on 29.09.2026. Brief Profile M/s. Agarwal U R S & CO., Chartered Accountants (FRN: 013910C), established in May 2007, is a multi-disciplinary firm with over 19 years of professional standing. Headquartered in Noida (Delhi NCR) with offices in Gurugram and international presence across 6 countries, the firm comprises 10 Partners and over 50 professionals. The firm is empaneled with the NSE/BSE and the Indian Banks' Association (IBA) for forensic audits. It specializes in statutory audits, Ind AS/IFRS reporting, corporate taxation, and risk assurance across manufacturing, services, and financial sectors, serving prominent clients and major public sector banks. Disclosure of relationship Not Applicable between Directors