X0306 4 2019-09-30 0 0001361538 Primoris Services Corp PRIM 0001620715 King David Lee C/O PRIMORIS SERVICES CORPORTATION 2300 NORTH FIELD STREET, SUITE 1900 DALLAS TX 75201 1 1 0 0 Chief Executive Officer Common Stock 15171 D Restricted Stock Units 2019-09-30 4 A 0 153 0 A Common Stock 153 50266 D Each restricted stock unit represents a contingent right to receive one share of PRIM common stock or the cash value thereof on the date of settlement, in the Company's discretion. Represents dividend equivalent units in the form of restricted stock units with respect to vested restricted stock units. Vested restricted stock units will be settled in stock or cash on the earlier of (i) six months following the reporting person's termination of employment; (ii) the date of the reporting person's death or the date the reporting person becomes disabled; (iii) the date of a change in control of the Company; or (iv) March 24, 2022. /s/ Kenneth M. Dodgen, by power of attorney 2019-10-02