A new regulatory filing has revealed Facebook founder Mark Zuckerberg earned $3.3 billion (£1.9 billion) from the sale of share options during 2013.
The entrepreneur saw his base salary for 2013 fall to $1, following in the footsteps of former Apple boss Steve Jobs and Larry Page of Google in doing so.
Mr Zuckerberg's total compensation for the year was revealed in the filing to be $653,165, which is down from almost $2 million in 2012, a reduction of around 67 per cent.
The company founder now owns 426.3 million Facebook shares, which are worth about $25.7 billion at their latest valuation.
During trading on the Nasdaq yesterday (March 31st), the share price of Facebook rose by 0.38 per cent, though stocks remained some distance away from the firm's 52-week high.
Facebook has more than a billion users around the world and the company has bought photo-sharing app Instagram, instant messaging firm WhatsApp and virtual reality company Oculus VR in the last few months.
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