A man stands outside of the Nasdaq stock market with a sign moments after Facebook stock went public on May 18, 2012 in New York. (Photo by Spencer Platt/Getty Images)
The average worker in San Mateo County saw his or her weekly wage increase 107 percent in the last three months of 2012, likely because of Facebook employees cashing in stock options after the company's initial public offering, a report said.
The weekly wage in San Mateo County -- which houses Facebook's headquarters in Menlo Park -- rose to $3,240 eclipsing the country's most well-paid locale, Manhattan, according to the Wall Street Journal. If you're doing the math, that's $168,000 a year, but the last three months of 2012 were unusual for Facebook employees.
Although Facebook's IPO was in May, most employees had a lockup on their shares, meaning they couldn't sell before November 14, 2012. The end of the lockup freed up 852 million shares of Facebook stock. Lockups aren't unusual after an IPO because they prevent stock volatility -- or basically all shareholders selling at once and tanking the stock.