Intimation regarding Closure of Trading Window.

September 28, 2026 National Stock Exchange of India BSE Limited Luxembourg Stock Exchange Limited Scrip Code: AMBUJACEM Scrip Code: 500425 Code: US02336R2004 Sub.: Closure of Trading Window for dealing in Securities of the Company in terms of the SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended (SEBI PIT Regulations’). Dear Sir / Madam, Pursuant to SEBI PIT Regulations, we wish to inform you that the Trading Window for dealing in securities of the Company shall remain closed with effect from October 01, 2026, till 48 hours after the announcement of the Unaudited Financial Results of the Company for the quarter and half year ended on September 30, 2026. The date for the upcoming Board Meeting of the Company for the declaration of the Unaudited Financial Results for the quarter and half year ended on September 30, 2026, will be intimated in due course. This intimation will also be uploaded on the Company’s website at www.ambujacement.com. Kindly take note of the above Thanking you, Yours Sincerely, For, Ambuja Cements Limited Manish Mistry Company Secretary & Compliance Officer Membership No. F8373 Ambuja Cements Limited Registered Office: Adani Corporate House Shantigram, Near Vaishno Devi Circle, S. G. Highway, Khodiyar, Ahmedabad – 382 421, Gujarat, India Ph +91 79-2656 5555 E mail: investors.relation@adani.com www.ambujacement.com CIN: L26942GJ1981PLC004717