Article 43
The Exchange shall have the authority to take the necessary proceedings for the suspension of trading in securities of any listed or unlisted company whose securities are admitted for trading on the Exchange, and notify the company of such a decision on the following events:
1— If the trading volume in the company's shares falls below the limit prescribed by the Exchange.
2— If the market value of the shares changes, upwards or downwards with regard to the period and percentage prescribed by the Exchange.
3— Prior to or during the merger process.
4— If the Exchange realized that misleading information had been directed to it or to the investors.