The window for trading in the shares will be closed from October 01, 2026 till 48 hours post submission of unaudited financial results for the quarter and half year ending September 30, 2026.

RIGA SUGAR CO LTD (Wholly owned subsidiary of Nirani Sugars Limited) CIN: L15421WB1980PLC032970 Website: www.rigasugar.com September 25, 2026 Listing Department BSE Limited Scrip Code: 507508 Sub: Trading Window Closure Dear Sir/Madam, We wish to inform that pursuant to the provisions of the SEBI (Prohibition of Insider Trading) Regulations, 2015 (“SEBI PIT Regulations”) and the Company’s Code of Conduct framed under SEBI PIT Regulations, the window for trading in the equity shares of the Company by the Designated Persons and their Immediate relatives will be closed from October 1, 2026 till forty-eight (48) hours after submission of unaudited financial results for the quarter and half year ending September 30, 2026 with the Stock Exchange. This disclosure will also be hosted on the Company's website www.rigasugar.com Kindly take the above information on record. Thanking you, Yours faithfully, For Riga Sugar Co. Limited Saurav Singh Company Secretary & Compliance Officer Membership No.: A63910 Registered Office Corporate Office 14 Netaji Subhas Road, 2nd Floor, P S Hare Street, #S-904, 9th Floor, World Trade Centre, Brigade Gateway Kolkata, West Bengal, India, 700001 Tel: 9766057999 Campus, Rajajinagar, Karnataka, India-560055 Email: riga.cgm@niranigroups.com Tel: 080-232 56500|23256500 | Email: ho@niranigroups.com