Mark Zuckerberg, CEO and co-founder of Facebook, had a compensation package of US$8.9 million in 2017, up 54 percent from the year prior - which was almost entirely for personal security and use of a private jet, the company says.
His salary for 2017 was just a token $1, as it has been since 2013. As of March 31, Mr Zuckerberg owned 401.5 million shares of Facebook stock, currently worth US$6.6 billion (AU$8.5 billion).
During 2017, the US$8.9 million in reported compensation "consisted almost entirely of costs related to personal security for Mr Zuckerberg at his residences and during personal travel pursuant to his overall security program and costs related to personal usage of private aircraft", Facebook said in a regulatory filing.
Mr Zuckerberg earlier this week testified before Congress, to discuss the company's mishandling of data that improperly ended up on the servers of Cambridge Analytica. That's the British political data-analytics firm that conducted work for Donald Trump's 2016 presidential campaign.
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Earlier this year, Mr Zuckerberg sold US$357 million worth of Facebook shares to fund his philanthropic organisation, the Chan Zuckerberg Initiative, after selling nearly US$1 billion in stock last year.