X0306 4 2020-01-01 0000075362 PACCAR INC PCAR 0001649477 Davila Marco A. 777 106TH AVENUE NE BELLEVUE WA 98004 0 1 0 0 Vice President COMMON STOCK 2020-01-01 4 M 0 675 A 8454.661 D COMMON STOCK 2020-01-02 4 F 0 201 79.10 D 8253.661 D COMMON STOCK 2020-01-02 4 F 0 146 79.10 D 8107.661 D COMMON STOCK (SIP) 1119.249 D STOCK OPTION 67.63 2020-01-01 2027-02-07 COMMON STOCK 6200 6200 D STOCK OPTION 68.69 2021-01-01 2028-02-07 COMMON STOCK 5466 5466 D STOCK OPTION 65.56 2022-01-01 2029-02-06 COMMON STOCK 7496 7496 D STOCK UNITS (LTIP) 2020-01-01 4 M 0 675 0 D COMMON STOCK 675 1348 D Restricted stock units converted to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions. Shares withheld for payment of tax liability in connection with the vesting of restricted shares and/or restricted stock units. Shares held in PACCAR Savings Investment Plan (SIP). Option to buy awarded under PACCAR Long Term Incentive Plan (LTIP). Restricted stock units awarded under LTIP and convertible to common stock on a one-for-one basis upon satisfaction of all applicable vesting conditions. Each award vests in four equal installments commencing on March 1 following the award and January 1 of the next three years. Marco A. Davila by Irene E. Song POA 2020-01-03