NOTICE OF ADJUSTMENT TO CONVERSION PRICE OF3.08% CONVERTIBLE BONDS DUE 2026(Debt Stock Code: 40946)

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.This announcement is for information purposes only and does not constitute an invitation or offer to acquire purchase or subscribe for securities.This announcement does not constitute or form a part of any offer to sell or the solicitation of any offer to acquire purchase or subscribe for any securities in the United States or any other jurisdiction in which such offer solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. Neither this announcement nor anything herein forms the basis for any contract or commitment whatsoever. The securities have not been and will not be registered under the U.S. Securities Act of 1933 as amended (the ‘‘Securities Act’’) or the securities laws of any state of the United States or other jurisdiction. Unless they are registered the securities may be offered only in transactions that are exempt from registration under the Securities Act or the securities laws of any other jurisdiction. The securities are being offered and sold outside the United States in reliance on Regulation S under the Securities Act. No public offering of the securities will be made in the United States or in any other jurisdiction where such an offering is restricted or prohibited.CHINA MENGNIU DAIRY COMPANY LIMITED 中国蒙牛乳业有限公司* (Incorporated in the Cayman Islands with limited liability) (Stock Code: 2319) NOTICE OF ADJUSTMENT TO CONVERSION PRICE OF 3.08% CONVERTIBLE BONDS DUE 2026 (Debt Stock Code: 40946) Reference is made to (1) the announcement of China Mengniu Dairy Company Limited (the ‘‘Company’’) dated November 26 2021 in relation to completion of issue of HK$4862600000.00 3.08% convertible bonds due 2026 (the ‘‘Bonds’’) (2) the announcement of the Company dated June 8 2022 in relation to adjustment to conversion price of the Bonds from HK$34.73 per Share to HK$34.33 per Share (3) the announcement of the Company dated June 6 2023 in relation to adjustment to – 1 –conversion price of the Bonds from HK$34.33 per Share to HK$33.84 per Share and (4) the poll results announcement of the Company dated June 12 2024 in relation to among others the approval by the shareholders of the Company of a final dividend of RMB0.489 per Share (the ‘‘Final Dividend’’) at the annual general meeting of the Company held on June 12 2024. The Bonds are listed on the Stock Exchange (stock code: 40946). Notice is hereby given that the conversion price of the Bonds will be adjusted in accordance with Condition 6(c) (Adjustments to Conversion Price) of the terms and conditions of the Bonds as a result of the Final Dividend. The Conversion Price currently HK$33.84 per Share will be adjusted to HK$32.68 per Share with effect from June 19 2024 being the date immediately after the record date for the purpose of ascertaining the shareholders’ entitlement to the Final Dividend. All other terms and conditions of the Bonds remain unchanged.By order of the board of directors China Mengniu Dairy Company Limited Kwok Wai Cheong Chris Company Secretary Hong Kong June 12 2024 As at the date of this announcement the board of directors of the Company comprises: Mr.Jeffrey Minfang Lu Mr. Gao Fei and Ms. Wang Yan as executive directors; Mr. Qing Lijun Mr. Wang Xi and Mr. Simon Dominic Stevens as non-executive directors; and Mr.Yih Dieter (alias Yih Lai Tak Dieter) Mr. Li Michael Hankin and Mr. Ge Jun as independent non-executive directors.* For identification purposes only –2–