144 0001441075 XXXXXXXX LIVE 0001361538 Primoris Services Corp 001-34145 2300 N. FIELD STREET, SUITE 1900 DALLAS TX 75201 214-740-5600 Cook Stephen C. Director Common Northern Trust Securities, Inc.

1801 Post Oak Blvd. Ste 500 Houston TX 77056

3500 101150.00 53135487 06/07/2023 NASDAQ Common 02/24/2022 Payment for Services Rendered Primoris N 3500 02/24/2022 Compensation N Stephen C Cook Allyson P Cook

522 Shadywood Rd Houston TX 77057

Primoris Services, Corp. 03/29/2023 7000 167675.45 06/06/2023 /s/ Christian Nasser, as a duly authorized representative of National Financial Services LLC, as attorney-in-fact for Stephen C Cook