Chad Richison, who founded the payroll processor in 1998, was awarded 1.61 million restricted shares in November
Richison, 50, has become the highest paid CEO in the S&P 500 after filings revealed he was awarded a 2020 compensation package worth $211 million
His award of restricted shares could eventually add more than $2 billion to his fortune in the next 10 years
An independent calculation estimated that the award is worth closer to $702 million
The compensation package is one of the five largest awards to a CEO since at least 2010, MyLogIQ data shows