Facebook Boss Sheryl Sandberg's £59m Share Sale
Facebook executive Sheryl Sandberg has sold £59m ($91m) of her shares in the company, according to filings in the US.
US securities filings show the social networking giant's chief operating officer sold 2.37m shares at an average price of £25 ($38) a share.
The shares were sold at the level of Facebook's May 2012 initial public offering (IPO) using a pre-arranged trading plan.
Facebook shares initially plunged after the IPO went ahead in a blaze of publicity, dropping to £11.48 ($17.55) in September 2012.
The price recovered and surpassed its initial value at the end of July, following the announcement of impressive £217m ($336m) profits for the second quarter of 2013.
The performance of Facebook's mobile advertising business was credited with driving the boost in profits and subsequent market optimism.
Ms Sandberg, 43, has sold Facebook shares several times since the company went public, cashing in some £32m ($50m) in 2012 alone.
She still holds more than 25 million shares - worth around £646m ($1bn) - according to the latest filing.
Facebook boss Mark Zuckerburg poached Ms Sandberg from her job as Google's vice president of global online sales and operations in 2008.
The Harvard Business School graduate's book of advice for women in the workplace - Lean In - has spent 21 weeks on the New York Times Best Sellers List.