Closure of Trading Window for Designated Persons (September 2026 Quarter)

STANDARD SURFACTANTS LTD 8/15, ARYA NAGAR, KANPUR-208 002 (INDIA Tel. : 0512-2531762 Fax :0512-2548585 E-mail : headoffice@standardsurfactants.com Website: www.standardsurfactants.com CIN No. :L24243UP1989PLCO10950 Date: 01.10.2026 The BSE Limited Department of Corporate Services Phiroze Jeejeebhoy Towers Dalal Street, Mumbai-400001 (Scrip Code: 526231) Subject: Intimation of Closure of Trading Window under SEBI (Prohibition of Insider Trading) Requlations,2015. Dera Sir/Mam, In terms of provisions of Securities Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended from time tot ime and in terms of Company's Code of Conduct for Prohibition of Insider Trading, the Trading Window for dealing in the Equity Shares of the Company is closed for all Designated Persons and their immediate relatives,f rom 01st Oct, 2026 till the end of 48 hours after the declaration of the Un-audited Financial Results of the Company for the Quarter and Half Year ended September 30th, 2026. The Closure of trading window is intimated to the Designated Persons in accordance with the Code of the Company and via Depository portal of PAN level ISIN freeze. The date of Board Meeting for declaration of the Un-audited Financial Results of the Company for the quarter and Half year ended September 30th, 2026 will be intimated in due course. Kindly take the above information on your record and the same information is also available on Company's website. STANDARD SURFACTANTS LIMITED REAO AND &/15 ARYA NAGAR KANPUR Pawan Kumar Garg DIN: 00250836 Works: . 24 A & B New Sector, Industrial Area, Mandideep, Bhopal-462 046 (M.P.)