A-share code: 688981 A-share abbreviation: SMIC Announcement No.: 2024-020

Hong Kong stock code: 00981 Hong Kong stock abbreviation: SMIC

Semiconductor Manufacturing International Corporation (SMIC).

Announcement on abnormal fluctuations in stock trading

The board of directors and all directors of the company guarantee that the content of this announcement does not contain any false records and misleading statements

or material omissions, and bear legal responsibility for the authenticity, accuracy and completeness of its content in accordance with law.

Important Content Notes:

The shares of Semiconductor Manufacturing International Corporation (hereinafter referred to as the "Company") have been traded for three consecutive years

Close of trading day (September 30, 2024, October 8, 2024 and October 9, 2024).

If the deviation of the price increase exceeds 30% cumulatively, according to the relevant provisions of the "Shanghai Stock Exchange Trading Rules" and the "Rules for Real-time Monitoring of Abnormal Transactions of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange", it is an abnormal fluctuation of stock trading.

After the company's self-inspection, the company's current daily operation is normal and has not undergone major changes. As of this company

On the disclosure date, the company did not have any material matters that should be disclosed but were not disclosed.

1. The specific situation of abnormal fluctuations in stock trading

On September 30, 2024, October 8, 2024 and October 9, 2024, the company's shares deviated from the closing price increase by more than 30% in three consecutive trading days, which is an abnormal fluctuation of stock trading according to the relevant provisions of the "Shanghai Stock Exchange Trading Rules" and the "Rules for Real-time Monitoring of Abnormal Transactions of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange".

2. Relevant information that the listed company pays attention to and verifies

In view of the abnormal fluctuations in the company's stock trading, after the company's self-inspection, the relevant situation is explained as follows:

(1) Daily operations

At present, the company's production and operation activities are normal, the market environment and industry policies have not undergone major adjustments, the company's production and sales and other business conditions have not fluctuated significantly, and the internal production and operation order is normal.

(2) Major matters

As of the disclosure date of this announcement, except for the information that has been publicly disclosed in the designated media, there are no major events affecting the trading price of the company's shares; There are no other material matters that should be disclosed by the company but have not been disclosed.

(3) Media reports and market rumors

The Company is not aware of any media reports or market rumors that could have a material impact on the trading price of the Company's shares.

(4) Other price-sensitive information

After verification by the company, the company has not found other major events that may have a greater impact on the company's stock price. The company's directors and senior managers did not buy or sell the company's shares during the abnormal fluctuation of the company's stock trading.

3. Statement of the Board of Directors

The board of directors of the company confirms that as of the disclosure date of this announcement, except for the matters that have been disclosed in accordance with the regulations, the company does not have any matters that should be disclosed but have not been disclosed in accordance with the relevant provisions of the "Rules for the Listing of Stocks on the Science and Technology Innovation Board of the Shanghai Stock Exchange" (hereinafter referred to as the "Listing Rules of the Science and Technology Innovation Board"). The board of directors has also not been informed of the information that should be disclosed in accordance with the relevant provisions of the Listing Rules of the Science and Technology Innovation Board but has not been disclosed, which may have a greater impact on the trading price of the company's shares and its derivatives.

Fourth, relevant risk warning

The company solemnly reminds investors that "China Securities Journal", "Shanghai Securities News" and "Securities Times"

Securities Daily is the company's designated information disclosure newspaper and website of Shanghai Stock Exchange

(www.sse.com.cn) and the HKEX website (www.hkex.com.hk) are the designated information disclosure websites of the Company. All information of the company is subject to the information published in the above-mentioned designated media.

Investors are advised to invest rationally and pay attention to investment risks.

The announcement is hereby made.

Semiconductor Manufacturing International Corporation (SMIC).

board of directors

October 10, 2024