Mayer's net worth is estimated to be USD 310 million, based on the most recent publicly available disclosure of her shares and options as well as her residential and other investments.
"Mayer's net worth is calculated after accounting for shares in public and private companies, residential and passion investments such as art, planes and real estate, and is based on the most recent publicly available disclosure of her shares and options in Yahoo," a Wealth-X release said.
According to Yahoo's latest quarterly report, the Internet giant has earned USD 348 million, or 33 cents per share, a 28 per cent increase from USD 272 million, or 23 cent per share, a year earlier.
The fourth quarter results announced on Tuesday show that revenue of the company fell 6 per cent to USD 1.27 billion.
Shares fell nearly 5 per cent after results came out.
Mayer had joined Yahoo in 2012 after a 13-year stint in Google.