||represents a grant of 87,977 restricted stock units ("rsus"). the rsus vest in three equal annual installments on the first, second and third anniversaries of the grant date contingent on the reporting person's continued service on each applicable vesting date.
||the amount of securities shown as beneficial owned following the reported transaction includes 944 shares of class c common stock acquired in multiple small transactions, substantially all of which were in 2021, by the reporting person's financial advisor for the reporting person's account. the reporting person only recently became aware of the purchases.
||represents a grant of 319,914 rsus. the rsus vest 20% on the first anniversary, 30% on the second anniversary and 50% on the third anniversary of the grant date contingent on the reporting person's continued service on each applicable vesting date.
||represents shares withheld by the issuer for payment of the tax liability incurred upon the partial vesting of rsus granted on march 15, 2020, march 15, 2021 and march 15, 2022.
||represents 566,723 shares certified as earned with respect to an award of performance-based rsus granted on march 15, 2020, net of 219,072 shares withheld by the issuer for payment of the tax liability incurred on vesting of such shares. vesting of the performance-based rsus occurred simultaneously with their certification.
||held by two family trusts of which the reporting person and his spouse serve as co-managing trustees.