Trading Window

Kothari Petrochemicals Limited Regd. Off: “Kothari Buildings”, No. 115 Mahatma Gandhi Salai, Nungambakkam, Chennai - 600 034. Phone: 044 - 35225527 / 5528. www.kotharipetrochemicals.com Sep 24, 2026 Listing Department National Stock Exchange of India Ltd. Exchange Plaza Bandra - Kurla Complex Bandra [E], Mumbai - 400 051 Dear Sirs, Stock Code - KOTHARIPET Sub: Closure of Trading Window for Designated Persons of the Company and their immediate relatives as per SEBI (Prohibition of Insider Trading) Regulations, 2015 and Company’s Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons. As per the SEBI (Prohibition of Insider Trading) Regulations, 2015 and Company’s Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons, the Trading Window for dealing in the securities of the Company will be closed for all Designated Persons of the Company and their immediate relatives from October 01, 2026 till the expiry of 48 hours after the declaration of Unaudited Financial Results for the quarter and half year ended September 30, 2026. Kindly acknowledge and take the above in your records. Thanking You, Yours faithfully for Kothari Petrochemicals Limited K. Priya Company Secretary & Compliance Officer Plant : CIN : L11101TN1989PLC017347 TIN No. : 33523881406 1/2-B 33/5, Sathangadu Vilage, Manali, Chennai – 600 068, India, Phone +91 44 25941308 / 309, Fax +91 44 25941524 CST No. 217771 dt. 20·12·1999 GSTIN : 33AAACK1347H1ZX