The highest-paid executive in Hollywood last year isn’t a studio chief or a venture capitalist. It is Ari Emanuel, the chief executive of Endeavor Group Holdings Inc., the agency which he co-founded nearly three decades ago.

Mr. Emanuel’s 2021 pay package, revealed this month in Endeavor’s first-ever annual report as a public company, is valued at $308 million, including equity awards. That compensation is higher than that of any CEO in the S&P 500 reported so far this year, or last, and more closely resembles pay among executives at big tech firms in recent years than other industries.

…So far among publicly traded companies in the Russell 3000 index, only the co-CEOs of New York-based private-equity giant KKR & Co. were paid more in 2021, according to data from MyLogIQ LLC. Joseph Bae and Scott Nuttall received compensation valued at $559.6 million and $523.1 million, respectively, after taking over last fall from co-founders Henry Kravis and George Roberts, who made about $67 million apiece last year, the company said in a Feb. 28 securities filing.