Analysts/Institutional Investor Meet/Con. Call Updates

July 20, 2026 The General Manager The Manager Corporate Relations Department National Stock Exchange of India Ltd BSE Limited Exchange Plaza Phiroze Jeejeebhoy Towers Bandra – Kurla Complex Dalal Street Bandra (E) Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 500770 Symbol: TATACHEM Dear Sirs, Sub: Intimation of Analysts’/Investors Call under the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (‘SEBI Listing Regulations’) Pursuant to Regulation 30 of the SEBI Listing Regulations, we would like to inform that an Analysts’/Investors Call on the Unaudited Consolidated and Audited Standalone Financial Results of the Company for the quarter ended June 30, 2026 would be held on Monday, July 27, 2026, dial in details of which are enclosed herewith. This is for your information and records. A copy of this intimation is also being made available on the website at www.tatachemicals.com. Thanking you, Yours faithfully, For Tata Chemicals Limited Jeraz E. Mahernosh Company Secretary (FCS 7008) Encl: as above Tata Chemicals Ltd.’s Q1FY27 Earnings Call Monday, July 27th, 2026 at 7:30 pm IST Mumbai, 20 July 2026: Tata Chemicals Limited, a global company operating in Basic Chemistry and Specialty Products will organize a conference call for investors and analysts on Monday, July 27th, 2026, at 7:30 PM IST to discuss the Company’s Q1FY27 financial performance. R Mukundan, Managing Director & CEO and Nandakumar Tirumalai, Chief Financial Officer will represent Tata Chemicals on the Call. The call will open with key comments from the management of Tata Chemicals Ltd, following which there will be an opportunity for participants to pose queries to the management through an interactive Question & Answer session. Details of the conference call are as follows: Timing : 7:30 PM IST on Monday, July 27th, 2026 Pre- Registration : Diamond Pass Conference dial-in Primary number : +91 22 6280 1543 / +91 22 7115 8885 Hong Kong Local Access Number : 800 964 448 Singapore Local Access Number : 800 101 2045 UK Local Access Number : 0 808 101 1573 USA Local Access Number : 1 866 746 2133 For more information contact: Damini Jhunjhunwala / Chintan Joshi Tata Chemicals Ltd. Tel: +91 22 6232 7400 E-mail: djhunjhunwala@tatachemicals.com chjoshi@tatachemicals.com