Closure of trading window for quarter and half year ended September 30, 2026.

Date: September 24, 2026. BSE Limited, Corporate Relationship Dept, 1st Floor, New Trading Ring, Rotunda Building, P. J. Towers, Dalal Street, Fort, Mumbai - 400 001 BSE Scrip Code: 531240 Scrip Name: SHAMROIN Subject: Closure of trading window for quarter and half year ended September 30, 2026. Dear Sir / Madam, Pursuant to provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended from time to time and Shamrock Industrial Company Limited’s Code of Conduct for Insiders, the Trading Window for dealing in securities of the Company shall remain closed for Designated Persons (as defined in the Code) from close of trading hours of September 30, 2026 till 48 hours after the announcement of the Unaudited Financial Results of the Company for the quarter and half year ended September 30, 2026. This communication is also available at the website of the Company at https://shamrockindustrial.wordpress.com/ You are requested to take the above information on record Thanking you. Yours faithfully, For Shamrock Industrial Company Limited Bagepalli Vijayakumar Harish Executive Director DIN: 00354759 Place: Tumkur