Facebook COO Sandberg Sells $26.2M in Stock Company's been doing much better in market By John Johnson, Newser Staff Posted Dec 8, 2012 4:15 PM CST 6 comments Comments Facebook Chief Operating Officer Sheryl Sandberg in a file photo. (AP Photo/Keystone, Laurent Gillieron, File) (Newser) – Facebook Chief Operating Officer Sheryl Sandberg got a lot richer yesterday: She sold $26.2 million worth of company stock, reports Forbes. Sandberg sold about 950,000 shares, according to her SEC filing, taking advantage of the company's improved performance in the market. Facebook stock rose to $27.49 yesterday, an increase of 40% since early November, reports CNET. The site chalks it up in part to the market's embrace of the company's "we're-all-about-mobile message."