Total compensation is calculated as the sum of base salary, discretionary and performance-based cash bonuses, the grant-date fair value of stock and option awards during the fiscal year, and other compensation like benefits and perks. Equilar, an executive compensation research firm, looked at top executives of companies with more than $1 billion in revenue that filed a proxy statement as of June 30, 2013. Pay data based on companies' fiscal year 2012. See more on Sergey Brin from Equilar.
By Gabrielle Solomon and Lauren Gensler@CNNMoney - Last updated August 06 2013 06:07 AM ET