Cheetah Mobile, a Chinese internet and mobile security software maker spun out of Kingsoft, filed on Wednesday with the SEC to raise up to $300 million in an initial public offering. The Beijing, China-based company, which was founded in 2009 and booked $124 million in sales for the fiscal year ended December 31, 2013, plans to list on the NYSE. Cheetah Mobile initially filed confidentially on January 27, 2014. Morgan Stanley, J.P. Morgan and Credit Suisse are the joint bookrunners on the deal. No pricing terms were disclosed and a proposed ticker has not been announced.