Kronox Lab Sciences Ltdhas informed BSE that the meeting of the Board of Directors of the Company is scheduled on 05/11/2026 ,inter alia, to consider and approve Unaudited Standalone Financial Results for the Quarter and half year ended September 30, 2026

Date: October 30, 2026 To, To, National Stock Exchange of India Limited BSE Limited Exchange Plaza, C-1 Block G, 25th Floor, Bandra Kurla Complex Phiroze Jeejeebhoy Towers, Bandra [E], Dalal Street, Fort, Mumbai – 400051 Mumbai - 400 001 NSE Scrip Symbol: KRONOX BSE Scrip Code: 544187 Subject: Intimation of Meeting of Board of Directors Dear Sir/Madam, In continuation to our previous announcement pursuant to Regulation 29 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, and other applicable regulations, if any, it is hereby intimated that the Meeting of the Board of Directors of the Company is scheduled to be held on Thursday, November 05, 2026, inter alia, to consider and approve; 1. The Unaudited Standalone Financial Results for the quarter and half year ended September 30, 2026. Kindly also be informed that the Trading Window for trading in the securities of the Company is closed for Directors, O(cid:431)icers, and designated employees of the Company with e(cid:431)ect from October 01, 2026, and will continue to remain closed up to 48 hours after declaration of Unaudited Standalone Financial Results of the Company for the quarter and half year ended September 30, 2026. This is for your information and further dissemination. Thanking you For KRONOX Lab Sciences Limited Nikhil Goswami Company Secretary & Compliance O(cid:431)icer Membership No. A68272