Upon the occurrence of a change in control of the Company, all grants of Restricted Stock under the Plan shall vest in full and become unrestricted and nonforfeitable. In addition, all vesting restrictions on the credits made to the Stock Unit Account in lieu of the grant of Restricted Stock described in Section 4(a) or 4(d) shall lapse but the payout provisions of such credits shall not affected by such change in control. For purposes of this Section 11, a “change in control” shall have the meaning given to such term under [Section 16.4] of the PACCAR Inc Long Term Incentive Plan, as approved by the shareholders of the Company on April 20, 2011. In addition, the Board or the Committee may in its sole discretion terminate the deferral feature of the Plan within the 30 days preceding or the 12 months following a “change in control event” (as such term is defined in the Treasury regulations promulgated pursuant to section 409A of the Code) and pay out deferred amounts, in accordance with [Section 1.409A-3(j)(ix)(B)])] of the Treasury regulations promulgated pursuant to section 409A of the Code .

Upon the occurrence of a change in control of the Company, all grants of Restricted Stock under the Plan shall vest in full and become unrestricted and nonforfeitable. In addition, all vesting restrictions on the credits made to the Stock Unit Account in lieu of the grant of Restricted Stock described in [Section 4(a) or 4(d)])] shall lapse but the payout provisions of such credits shall not affected by such change in control. For purposes of this [Section 11], a “change in control” shall have the meaning given to such term under [Section 17.4] of the PACCAR Inc Long Term Incentive Plan, as approved by the shareholders of the Company on April 26, 2016. In addition, the Board or the Committee may in its sole discretion terminate the deferral feature of the Plan within the 30 days preceding or the 12 months following a “change in control event” (as such term is defined in the Treasury regulations promulgated pursuant to section 409A of the Code) and pay out deferred amounts, in accordance with [Section 1.409A-3(j)(ix)(B)])] of the Treasury regulations promulgated pursuant to section 409A of the Code.