Trend Micro (TMIC) announced that its CEO Eva Chen has advised the company of possible SEC violations against herself for trades with Sina.com (SINA).

The company's announcement says that the SEC may commence a civil enforcement action against Chen for alleged violations of Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 thereunder involving her spouse, Daniel Chiang, and trading in the securities of Sina.com (SINA). Chiang is former co-chairman of Sina.com.

The SEC staff has also inquired into whether Chen under-reported her holdings in Trend Micro shares.

Trend Micro says it is not aware of any allegations against Chen that would be attributable to the company.