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Prohibiting Insider Trading
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Home > Investment Guide > Investor Protection > Prohibiting Insider Trading > Monitoring Insider Trading

Prohibition of Insider Trading

Insider Trading Regulation

Monitoring Insider Trading

 Obligation to Report Changes in Stock Ownership
The board of directors or majority shareholders must, by the tenth day of the following month, report to FSC and the relevant SRO (i.e., KRX) of any changes in their stock ownership.


 Disclosure of Majority Shares Ownership ("Five-Percent Rule")
Shareholders, when acquiring more than 5 percent of the outstanding shares of a company, must disclose such fact within five days (institutional investors disclose by the tenth day of the following month) of the purchase.
In addition, any changes in the share ownership ratio of more than 1 percent of the total outstanding shares must be disclosed by the shareholders owning 5 percent or more of the company's outstanding shares.