Yahoo president and CEO Marissa Mayer speaks during the Fortune Global Forum in San Francisco on Nov. 3, 2015.
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May 23, 2016 7:26 PM EDT

Yahoo spent just $26,891 on Marissa Mayer’s security costs in 2014. But in 2015, that number jumped to $544,061.

That’s because the CEO “faced specific security threats” that the company “believed were credible,” according to its SEC filing.

“SEC rules require us to report as compensation to the CEO in the Summary Compensation Table,” the filing says. “However the Compensation Committee does not consider this item to be a compensatory perk and authorized these arrangements for business purposes regardless of any value they may have to Ms. Mayer personally.”

The filing notes that these security services also protected Mayer’s immediate family.

Yahoo did not immediately respond to a request for comment from Business Insider.

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