Closure of Trading Window Intimation.

Date: September 25, 2026 To, To, BSE Limited National Stock Exchange India Limited 1st Floor, P. J Towers, Exchange Plaza, C-1, Block G, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai – 400001 Mumbai – 400051 Scrip Code: 506642 Symbol: SADHNANIQ Subject: Closure of Trading Window for the quarter ending on September 30, 2026. Dear Sir/ Madam, Pursuant to Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended from time to time and pursuant to Company’s Code of Conduct for prevention of Insider Trading, the ‘Trading Restriction Period’ shall be made applicable from the end of every quarter till 48 hours after declaration of Financial Results In view of the aforesaid, it is hereby intimated that the Trading Window for dealing in the securities of the Company for Designated Persons and their immediate relative as defined in the Code shall be closed from Thursday, 1st October, 2026 till the expiry of 48 hours after the declaration of Unaudited Financial Results of the Company to the Stock Exchanges for the quarter and half year ended on September 30, 2026. Further to inform you that the National Securities Depository Limited is the Designated Depository of the Company for restricting trading by Designated Persons (DPs) by freezing PAN at security level for Company's ISIN-INE888C01040 in accordance with SEBI Circular No. SEBI/HO/ISD/ISD-POD-2/P/CIR/2023/124 dated July 19, 2023. The same is being informed to Designated Persons in accordance with the Code of Conduct. You are requested to kindly take the afore mentioned on record and oblige. Yours faithfully, FOR SADHANA NITRO CHEM LIMITED Nitin Rameshchandra Jani Company Secretary Membership No.: A4757