Cook raked in the cash after acquiring and selling 5.04 million Apple shares, according to calculations from Bloomberg.
Apple withheld approximately 2.65 million shares, or more than 52% of the total number of shares Cook received, "to satisfy tax withholding requirements on vesting of" retired stock units, according to the filing.
Cook's award was determined "based on Apple's total shareholder return (TSR), relative to the other companies in the S&P 500 over a three-year period from August 25, 2018 through August 24, 2021," the filing reads. TSR is determined based on change in a company's stock price over three years.
Apple's shares have returned more than 1,100% over the past decade since Cook assumed the role of CEO. The company's market cap surpassed $2 trillion in 2020, and Cook's net worth reached $1.5 billion, according to Bloomberg's Billionaire Index.
Cook has previously donated millions of Apple shares and said he plans on giving away most of his wealth.