Intimation of closure of trading window from 1 October 2026

Reagd. Office B-217. 2nd Floor. Pranik Chambers Saki Vihar Road Sakinaka. Andher(iE) Mumbai-400 072 T- +918169376816 E kaisercorpltd@gmal E compliancekai W www kais CIN: L2210MH1893PLI To, KCL/74/2026-27 The Secretary, Date: September 30, 2026 BSE Limited, The Corporate Relations Department, Phiroze Jeejeebhoy, Dalal Street- Fort, Mumbai — 400001 Scrip Code: 531780 Sub: Closure of trading window. Dear Sir/Madam, Pursuant to the provisions of the SEBI (Prohibition of Insider Trading) Regulations, 2015, as amended, and the Company's Code of Conduct for Prevention of Insider Trading, we hereby inform that the Trading Window for dealing in the securities of the Company shall remain closed for all Designated Persons and their immediate relatives with effect from October 1, 2026 and shall remain closed until 48 hours after the declaration of the Unaudited Financial Results of the Company for the quarter and half year ended September 30, 2026. The date of the Board Meeting for consideration and approval of the aforesaid Unaudited Financial Results shall be intimated to the Stock Exchange separately in due course. Kindly take the above information on record. Thanking you, Yours faithfully, For Kaiser Corporation Limited Bhushanlal Arora Managing Director DIN: 00416032 Place: Mumbai