Pursuant to Securities and Exchange Board of India (Prohibition of Insider Trading ) Regulations, 2015, as amended from time to time, and Company''s Code of conduct for prevention of Insider Trading, the trading window for dealing in securities of the company will be closed for all designated persons and their immediate relatives as prescribed in the Regulations, from 1st October, 2026 till 48 hours after the declarationof Un-audited Financial Results for the quarter ended 30th September, 2026.

Date: 22.09.2026 The Secretary, BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street Mumbai- 400 001 Ref: Scrip Code – 533608 Sub: Intimation of Closure of Trading Window Dear Sir/Madam, We write to inform you that pursuant to the "Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended from time to time, and the Company’s code of conduct for prevention of insider trading, the trading window for dealing in securities of the Company will be closed for all designated persons and their immediate relatives as prescribed in the Regulations, from 1st October, 2026 till 48 hours after the declaration of the Un-audited Financial Results for the quarter ended 30th September, 2026. Thanking You, Yours Faithfully, For RDB Rasayans Limited Shradha Dalmia Company Secretary & Compliance Officer Works: 126, Basudevpur, HPL Link Road, P.0.-Khanjanchak, Haldia-721602, Purba Medinipur, West Bengal, India Phone: +91-3224 277088/278108 Fax: +91-3224 277340 • E-mail: rdbhaldia@sancharnet.in Website: www.rdbgroup.in ClN- L36999WB1995PLC074860