Intimation of Closure of Trading Window

September 24, 2026 To, To, BSE Limited National Stock Exchange of India Limited Listing Compliance & Legal Regulatory Listing & Compliance Phiroze Jeejeebhoy Towers, Exchange Plaza, Bandra-Kurla Complex, Dalal Street, Mumbai - 400 001 Bandra East, Mumbai 400 051 Stock Code: 543233 Stock Symbol: CHEMCON Dear Sir/Madam, Sub: Intimation of closure of Trading Window With regard to the captioned matter, this is to inform you that pursuant to the provisions of Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended and the Company's Code of Conduct for Prohibition of Insider Trading (the Code), the "Trading Window" for dealing in securities of the Company shall remain closed for all the "Designated Persons and their immediate relatives" covered under the Code, from 1st October, 2026 till 48 hours after the announcement of Unaudited Financial Results of the Company for the quarter and half year ended September 30, 2026. The details of the date of the Board Meeting for consideration and approval of Unaudited Financial Results of the Company for the quarter and half year ended September 30, 2026 shall be intimated in due course. This is for your information and records. Thanking you, Yours Sincerely, For Chemcon Speciality Chemicals Limited Shahilkumar Kapatel Company Secretary & Compliance Officer Membership No.: A52211