Closure of trading window for approval of unaudited financial results for the quarter and half year ending 30th September, 2026.

1st September, 2026 BSE Limited The National Stock Exchange of India Limited Corporate Relationship Department Listing Department Scrip Code: 532538 Scrip Code: ULTRACEMCO Sub: Intimation of Board Meeting under Regulations 29 and 50 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sirs, We write to inform you that a meeting of the Board of Directors of the Company will be held on Monday, 19th October, 2026, inter alia, to consider and approve the Standalone and Consolidated Unaudited Financial Results of the Company for the quarter and half year ending 30th September, 2026 (“financial results”). In terms of the Company’s Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons in Listed or Proposed to be Listed Securities, the trading window for dealing in the securities of the Company will be closed for all Connected / Designated Persons and their immediate relatives from 1st October, 2026 and shall remain closed till 48 hours after the announcement of financial results i.e. up to 21st October, 2026 (both days inclusive). The above is for your information, please. Thanking You, Yours faithfully, For UltraTech Cement Limited Dhiraj Kapoor Company Secretary and Compliance Officer Luxembourg Stock Exchange Singapore Exchange Citibank N. A. Custody Citibank N.A. BP 165 / L – 2011 2 Shenton Way, Services FIFC, 9th Floor, Depositary Receipt Luxembourg #02-02, SGX Centre 1, C-54 & 55, G Block, Services 388, Scrip Code: Singapore 068804 Bandra-Kurla Complex, Greenwich Street, US90403E1038 and ISIN Code: Bandra (East), Mumbai - 6th Floor, New US90403E2028 US90403YAA73 and 400 098 York, NY 10013 USY9048BAA18 UltraTech Cement Limited Registered Office : Ahura Centre, B – Wing, 2nd Floor, Mahakali Caves Road, Andheri (East), Mumbai 400 093, India T: +91 22 6691 7800 / 2926 7800 I F: +91 22 6692 8109 I W: www.ultratechcement.com/www.adityabirla.com I CIN : L26940MH2000PLC128420