Facebook COO Sheryl Sandberg has just sold nearly a million shares of Facebook stock, netting her just over $26 million.

According to an SEC filing, Sandberg sold 946,588 shares, which came out to be $26.2 million. The shares were sold at prices ranging from $27.30 to $27.90 a share. On Friday, that day that Sandberg sold off her shares, Facebook closed at $27.49 a share. Facebook stock has been on the rebound after going through a rough patch back a couple of months ago. At one point, the stock plunged into the high teens. At the IPO, the stock began at $38 a share.

Sandberg, who has served as Facebook COO since 2008, just recently became the first female member of the company’s Board of Directors.

This is Sandberg’s biggest Facebook stock sale ever. In her previous two sales, the Facebook COO sold $4.2 million worth of shares and $7.4 million.

You can see the official SEC filing here.