Trading Window

September 25, 2026 DCS-CRD Listing Compliance BSE Limited National Stock Exchange of India Limited First Floor, New Trade Wing Exchange Plaza, 5th Floor Rotunda Building, Phiroze Jeejeebhoy Towers Plot No. C/1, ‘G’ Block, Bandra- Kurla Complex Dalal Street, Fort Mumbai 400001 Bandra East Mumbai 400051 Fax No.2272 3121/2037/2039 Fax No.2659 8237/8238 Stock Code: 543213 Stock Code: ROSSARI Dear Sir/Madam, Sub: 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 Company’s Code of Conduct for Prevention of Insider Trading (“Code of Conduct”), 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 of Conduct, from October 01, 2026 till 48 hours after the announcement of Unaudited Financial Results of the Company for the quarter and half year ending on September 30, 2026. The same is being informed to the Designated Persons and their immediate relatives in accordance with the Code of Conduct. The details of the date of the Board Meeting for consideration and approval for aforesaid financial results shall be intimated in due course. The same may please be taken on record and suitably disseminated to all concerned. Thanking you, Yours Sincerely, For Rossari Biotech Limited Parul Gupta Company Secretary & Head - Legal Membership No.: A38895