PRIM / Primoris Services Corporation - SEC-arkivering, Årsberetning, Fuldmagtserklæring

Primoris Services Corporation
US ˙ NYSE ˙ US74164F1030

Grundlæggende statistik
LEI 549300UF3OLBJ8D5K349
CIK 1361538
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Primoris Services Corporation
SEC Filings (Chronological Order)
Denne side giver en komplet, kronologisk liste over SEC-arkiveringer, eksklusive ejerskabsregistreringer, som vi leverer andre steder.
May 6, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2026 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file numbe

May 6, 2026 EX-10.1

FOURTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 1, 2026 PRIMORIS SERVICES CORPORATION as Borrower THE VARIOUS FINANCIAL INSTITUTIONS PARTY HERETO as Lenders CIBC BANK USA as Agent, Collateral Agent and Joint Lead Arranger BMO bank N.A.,

Exhibit 10.1 FOURTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 1, 2026 Among PRIMORIS SERVICES CORPORATION as Borrower THE VARIOUS FINANCIAL INSTITUTIONS PARTY HERETO as Lenders and CIBC BANK USA as Agent, Collateral Agent and Joint Lead Arranger and BMO bank N.A., successor in interest to Bank of the West as Joint Lead Arranger and TRUIST SECURITIES, INC. as Joint Lead Arranger and REG

May 5, 2026 EX-99

Primoris Services Corporation Reports First Quarter 2026 Results

Exhibit 99.1 Primoris Services Corporation Reports First Quarter 2026 Results Dallas, TX – May 5, 2026 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its first quarter ended March 31, 2026 and provided comments on the Company’s operational performance and outlook for 2026. For the first quarter of 2026, Primoris reported the followi

May 5, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 30, 2026 Date of Report (Date of earliest event reported) Primoris Services C

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 30, 2026 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

March 20, 2026 ARS

ARS

2025 ANNUAL REPORT AT WORKRevenue $ millions $8,000 $7,000 $6,000 $5,000 $4,000 $3,000 $2,000 $1,000 $0 24 25 +19.

March 20, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted

March 17, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 12, 2026 Date of Report (Date of earliest event reported) Primoris Services C

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 12, 2026 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

February 24, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 24, 2026 EX-21.1

Subsidiaries and Equity Investments of the Registrant

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Chile, Ltda. Chile B Comm Constructors, LLC Texas Cardinal Contractors, Inc. Florida Edison Power Constructors, Inc. Arizona Future Infrastructure, LLC Texas James Construction Group, LLC Texas OnQuest, Inc. California OnQuest Canada ULC (formerly Born Heaters Canada)

February 24, 2026 EX-19.1

Insider Trading Policy

Exhibit 19.1 Insider Trading Policy I. Background A. Purpose. The federal securities laws prohibit any member of the Board of Directors (a “Director”), officer (as defined in Rule 16a-1(f) under the Securities Exchange Act of 1934 (the “Exchange Act”), an “executive officer”) or employee of Primoris Services Corporation (together with its subsidiaries, the “Company”) from purchasing or selling Com

February 23, 2026 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2025 Results

Exhibit 99.1 Primoris Services Corporation Reports Fourth Quarter and Full Year 2025 Results Dallas, TX – Feb. 23, 2026 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its fourth quarter and full year ended December 31, 2025, and provided the Company’s initial outlook for 2026. For the full year 2025, Primoris reported the following

February 23, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 17, 2026 Date of Report (Date of earliest event reported) Primoris Service

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 17, 2026 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Nu

November 4, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

November 3, 2025 EX-99

Primoris Services Corporation Reports Third Quarter 2025 Results

Exhibit 99.1 Primoris Services Corporation Reports Third Quarter 2025 Results Dallas, TX – November 3, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its third quarter ended September 30, 2025 and provided comments on the Company’s operational performance and outlook for the remainder of 2025. For the third quarter of 2025, Pri

November 3, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 29, 2025 Date of Report (Date of earliest event reported) Primoris Services

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 29, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Num

October 7, 2025 EX-99

Primoris Services Corporation Announces Appointment of Koti Vadlamudi as President and Chief Executive Officer

Exhibit 99.1 Primoris Services Corporation Announces Appointment of Koti Vadlamudi as President and Chief Executive Officer Dallas, TX – October 7, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or “the Company”), a premier specialty contractor of critical infrastructure services, today announced its Board of Directors has appointed Koti Vadlamudi President and Chief Executive Offic

October 7, 2025 EX-10

EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Koti Vadlamudi November 10, 2025

Exhibit 10.1 EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Koti Vadlamudi November 10, 2025 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into effective as of November 10, 2025 (the “Effective Date”), by and between Primoris Services Corporation, a Delaware corporation (the “Employer”), and Koti Vadlamudi (the “Employee”). WHEREAS, the Emplo

October 7, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 6, 2025 Date of Report (Date of earliest event reported) Primoris Services

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 6, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numb

September 15, 2025 144

144

144 0001703828 XXXXXXXX LIVE 0001361538 Primoris Services Corp 001-34145 2300 N. FIELD STREET, SUITE 1900 DALLAS TX 75201 214-740-5600 Kinch Jeremy Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 3006 372744.30 54012786 09/15/2025 NYSE Common 03/01/2024 Restricted Stock Vesting Issuer N 3006 03/01/2024 Compensation Y This sale occurred in the The Kinch Family Tr

September 15, 2025 144

144

144 0002057729 XXXXXXXX LIVE 0001361538 Primoris Services Corp 001-34145 2300 N. FIELD STREET, SUITE 1900 DALLAS TX 75201 214-740-5600 Moncrief Jeremy Heath Officer Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 2417 297943.83 54012786 09/15/2025 NYSE Common 03/01/2025 Restricted Stock Vesting Issuer N 2417 03/01/2025 Compensation Y 09/15/2025 /s/ Jennifer Ruchti, as a

September 11, 2025 144

144

144 0001924790 XXXXXXXX LIVE 0001361538 Primoris Services Corp 001-34145 2300 N. FIELD STREET, SUITE 1900 DALLAS TX 75201 214-740-5600 Ching Michael E. Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 2935 351877.44 54012786 09/11/2025 NYSE Common 08/03/2022 Restricted Stock Vesting Issuer N 1211 08/03/2022 Compensation Common 11/03/2022 Restricted Stock Vesting

August 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

August 4, 2025 EX-99

Primoris Services Corporation Reports Second Quarter 2025 Results

Exhibit 99.1 Primoris Services Corporation Reports Second Quarter 2025 Results Dallas, TX – August 4, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its second quarter ended June 30, 2025 and provided comments on the Company’s operational performance and outlook for the remainder of 2025. For the second quarter of 2025, Primori

August 4, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 30, 2025 Date of Report (Date of earliest event reported) Primoris Services Co

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 30, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

June 4, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 June 3, 2025 Date of Report (Date of earliest event reported) Primoris Services Cor

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 June 3, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

June 4, 2025 EX-16

Moss Adams’ Commission Letter dated June 3, 2025

Exhibit 16.1 June 3, 2025 U.S. Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Ladies and Gentlemen: We have read the statements made by Primoris Services Corporation included under Item 4.01 of its Current Report on Form 8-K dated June 3, 2025, to be filed with the Securities and Exchange Commission. We agree with the statements concerning our Firm contained therein. Sinc

May 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file numbe

May 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 30, 2025 Date of Report (Date of earliest event reported) Primoris Services C

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 30, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

May 5, 2025 EX-99

Primoris Services Corporation Reports First Quarter 2025 Results

Exhibit 99.1 Primoris Services Corporation Reports First Quarter 2025 Results Dallas, TX – May 5, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its first quarter ended March 31, 2025 and provided comments on the Company’s operational performance and outlook for 2025. For the first quarter of 2025, Primoris reported the followi

March 26, 2025 EX-10.2

Offer Letter dated March 21, 2025, by and between Primoris Services Corporation and Jeremy Kinch

Exhibit 10.2 March 21, 2025 Jeremy Kinch Dear Jeremy: We are pleased to provide the following terms for your promotion to Executive Vice President and Chief Operating Officer with Primoris Services Corporation, (the “Company” and “Employer”). The intention of this letter is to complement your Employment Agreement which will outline additional terms and details. 1. Position: Executive Vice Presiden

March 26, 2025 EX-10.1

Offer Letter dated March 21, 2025, by and between Primoris Services Corporation and David King

Exhibit 10.1 March 21, 2025 David King (via email) Dear David: On behalf of Primoris Services Corporation, referred to as the "Company”, I am pleased to offer you the position of Interim President & Chief Executive Officer, effective as of March 21, 2025 (the “Start Date”), while we search for a permanent President & CEO. The intention of this letter is to outline the terms and conditions of the r

March 26, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 21, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

March 21, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted

March 21, 2025 ARS

ARS

2 0 2 4 A N N U A L R E P O R T PRIMORIS ENERGIZED Primoris Services Corporation 2300 N.

March 20, 2025 EX-99

Primoris Services Corporation Announces Leadership Changes

Exhibit 99.1 Primoris Services Corporation Announces Leadership Changes Dallas, TX – March 14, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced that David King, Chairman and our prior Chief Executive Officer, has been named Interim President and Chief Executive Officer. David will succeed Tom McCormick, who will be separating from the Company effectiv

March 20, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 14, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

March 20, 2025 EX-10

Tom McCormick Separation and Release of Claims Agreement dated March 19, 2025

Exhibit 10.1 SEPARATION AND RELEASE OF CLAIMS AGREEMENT This Separation and Release of Claims Agreement (this “Agreement”) is made as of the Agreement Effective Date (as defined as defined in Section 11 below) by and between Primoris Services Corporation (the “Company”) and Thomas McCormick (“Executive”) (together, the “Parties”). WHEREAS, the Company and Executive are parties to an Amended and Re

February 25, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 25, 2025 EX-19.1

Insider Trading Policy (*)

Exhibit 19.1 Insider Trading Policy 1. Purpose Since Primoris Services Corporation (the “Company”) is a publicly traded company, restrictions under both state and federal law apply to the purchase and sale of the Company’s common stock by any director, officer, or employee of the Company (collectively referred to as “Insiders”). 2. Policy The Chief Financial Officer and General Counsel, with the a

February 25, 2025 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Chile, Ltda. Chile B Comm Constructors, LLC Texas Cardinal Contractors, Inc. Florida Edison Power Constructors, Inc. Arizona Future Infrastructure, LLC Texas James Construction Group, LLC Texas OnQuest, Inc. California OnQuest Canada, ULC (formerly Born Heaters Canada

February 24, 2025 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2024 Results

Exhibit 99.1 Primoris Services Corporation Reports Fourth Quarter and Full Year 2024 Results Dallas, TX – Feb. 24, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its fourth quarter and full year ended December 31, 2024, and provided the Company’s initial outlook for 2025. For the full year 2024, Primoris reported the following

February 24, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 19, 2025 Date of Report (Date of earliest event reported) Primoris Service

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 19, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Nu

January 8, 2025 EX-10

Amended and Restated Employment Agreement dated January 7, 2025, by and among Primoris Services Corporation and Jeremy Kinch

Exhibit 10.1 AMENDED AND RESTATED EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Jeremy Kinch AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into as of January 7, 2025, (the “Effective Date”), by and between Primoris Services Corporation, a Delaware corporation (the “Employer”), and Jeremy Kinch (the “

January 8, 2025 EX-99

Primoris Services Corporation Promotes Jeremy Kinch to Chief Operations Support Officer

Exhibit 99.1 Primoris Services Corporation Promotes Jeremy Kinch to Chief Operations Support Officer Dallas, TX – January 7, 2025 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or “the Company”), a premier specialty contractor providing critical infrastructure services, announced today that Jeremy Kinch, previously President of Energy, has been promoted to Chief Operations Support Office

January 8, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 January 7, 2025 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numb

November 12, 2024 SC 13G/A

PRIM / Primoris Services Corporation / VANGUARD GROUP INC Passive Investment

SC 13G/A 1 UnitedStates13GPrimorisSe.txt 240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 13)* (Name of Issuer) Primoris Services Corp (Title of Class of S

November 5, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

November 4, 2024 SC 13G/A

PRIM / Primoris Services Corporation / VANGUARD GROUP INC Passive Investment

240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 12)* (Name of Issuer) Primoris Services Corp (Title of Class of Securities) Common Stock (CUSIP Number) 74

November 4, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 30, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Num

November 4, 2024 EX-99

Primoris Services Corporation Reports Third Quarter 2024 Results

Exhibit 99.1 Primoris Services Corporation Reports Third Quarter 2024 Results Dallas, TX – November 4, 2024– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its third quarter ended September 30, 2024 and provided comments on the Company’s operational performance and outlook for 2024. For the third quarter of 2024, Primoris reported the

August 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

August 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 31, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

August 5, 2024 EX-99

Primoris Services Corporation Reports Second Quarter 2024 Results

Exhibit 99.1 Primoris Services Corporation Reports Second Quarter 2024 Results Dallas, TX – August 5, 2024– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its second quarter ended June 30, 2024 and provided comments on the Company’s operational performance and outlook for 2024. For the second quarter of 2024, Primoris reported the fol

July 10, 2024 SC 13G/A

PRIM / Primoris Services Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Primoris Services Corp Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: June 28, 2024 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒

May 21, 2024 LETTER

LETTER

United States securities and exchange commission logo May 21, 2024 Kenneth Dodgen Chief Financial Officer Primoris Services Corp 2300 N.

May 9, 2024 S-3ASR

As filed with the Securities and Exchange Commission on May 9, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 9, 2024 Registration No.

May 9, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file numbe

May 9, 2024 EX-FILING FEES

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Primoris Services Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Filing Fee Previously Paid in Connection Fee with Proposed Carry Unsold Calculation Maximum Maximum Carry Carry Forward Securities Security or Carry Offering Aggregate Amount of Forward Forward

May 9, 2024 8-K/A

Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 8, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

May 9, 2024 EX-99

Primoris Services Corporation Reports First Quarter 2024 Results

Exhibit 99.1 Primoris Services Corporation Reports First Quarter 2024 Results Dallas, TX – May 8, 2024– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its first quarter ended March 31, 2024 and provided comments on the Company’s operational performance and outlook for 2024. For the first quarter of 2024, Primoris reported the followin

May 9, 2024 CORRESP

1

May 9, 2024 Office of Real Estate and Construction Division of Corporation Finance United States Securities and Exchange Commission 100 F Street, NE Washington, D.

May 9, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 8, 2024 Date of Report (Date of earliest event reported) Primoris Services Corp

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 8, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

May 9, 2024 EX-99

Primoris Services Corporation Reports First Quarter 2024 Results

Exhibit 99.1 Primoris Services Corporation Reports First Quarter 2024 Results Dallas, TX – May 8, 2024– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its first quarter ended March 31, 2024 and provided comments on the Company’s operational performance and outlook for 2024. For the first quarter of 2024, Primoris reported the followin

May 3, 2024 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 1, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

April 26, 2024 LETTER

LETTER

United States securities and exchange commission logo April 26, 2024 Kenneth Dodgen Chief Financial Officer Primoris Services Corp 2300 N.

March 22, 2024 ARS

ARS

Primoris Services Corporation 2300 N. Field Street, Suite 1900 Dallas, Texas 75201 prim.com P RI M O RI S 2 0 2 3 AN NU AL R E P O R T PO W E R . A L W AY S. POWER. ALWAYS. 2023 ANNUAL REPORTUTILITIES REVENUE $ IN MILLIONS $6,000 $5,000 $4,000 $3,000 $2,000 $1,000 $0 BACKLOG $ IN MILLIONS $12,000 $10,000 $8,000 $6,000 $4,000 $2,000 $0 $300 $250 $200 $150 $100 $50 $0 OPERATING INCOME $ IN MILLIONS

March 22, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted

February 27, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 27, 2024 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Chile, Ltda. Chile B Comm Constructors, LLC Texas Cardinal Contractors, Inc. Florida Comtrac Services, LLC Delaware Edison Power Constructors, Inc. Arizona Future Infrastructure Holdings, LLC Delaware Future Infrastructure, LLC Texas Future Telecom Purchaser, LLC Dela

February 27, 2024 EX-97

Dodd-Frank Compensation Recovery Policy (*)

Exhibit 97 Primoris Services Corporation Dodd-Frank Compensation Recovery Policy This Compensation Recovery Policy (this “Policy”) is adopted by Primoris Services Corporation (the “Company”) in accordance with Section 303A.

February 26, 2024 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2023 Results

Exhibit 99.1 Primoris Services Corporation Reports Fourth Quarter and Full Year 2023 Results Dallas, TX – Feb. 26, 2024 – Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its fourth quarter and full year ended December 31, 2023 and provided the Company’s initial outlook for 2024. For the full year 2023, Primoris reported the following h

February 26, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 21, 2024 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Nu

February 13, 2024 SC 13G/A

PRIM / Primoris Services Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01735-primorisservicescorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Primoris Services Corp Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to

February 9, 2024 SC 13G/A

PRIM / Primoris Services Corporation / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Primoris Services Corp (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

February 8, 2024 SC 13G/A

PRIM / Primoris Services Corporation / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* Primoris Services Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 29, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropri

January 8, 2024 SC 13G/A

PRIM / Primoris Services Corporation / BlackRock Inc. Passive Investment

us74164f1030010824.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuan

November 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

November 7, 2023 EX-99

Primoris Services Corporation Reports Third Quarter 2023 Results

Exhibit 99.1 Primoris Services Corporation Reports Third Quarter 2023 Results Dallas, TX – November 7, 2023– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its third quarter ended September 30, 2023 and provided comments on the Company’s operational performance and outlook for 2023. For the third quarter of 2023, Primoris reported the

November 7, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 2, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Num

August 8, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

August 7, 2023 EX-99

Primoris Services Corporation Reports Second Quarter 2023 Results

Exhibit 99.1 Primoris Services Corporation Reports Second Quarter 2023 Results Dallas, TX – August 7, 2023– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its second quarter ended June 30, 2023 and provided comments on the Company’s operational performance and outlook for 2023. For the second quarter of 2023, Primoris reported the fol

August 7, 2023 EX-99

Primoris Services Corporation Reports Second Quarter 2023 Results

Exhibit 99.1 Primoris Services Corporation Reports Second Quarter 2023 Results Dallas, TX – August 7, 2023– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its second quarter ended June 30, 2023 and provided comments on the Company’s operational performance and outlook for 2023. For the second quarter of 2023, Primoris reported the fol

August 7, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 2, 2023 Date of Report (Date of earliest event reported) Primoris Services C

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 2, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

August 7, 2023 8-K/A

Financial Statements and Exhibits, Results of Operations and Financial Condition, Completion of Acquisition or Disposition of Assets, Other Events

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 2, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Num

May 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 22, 2023 Date of Report (Date of earliest event reported) Primoris Services Cor

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 22, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

May 26, 2023 EX-10

John F. Moreno, Jr. Separation Agreement (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K, as filed with the SEC on May 26, 2023).

Exhibit 10.1 MUTUAL AGREEMENT OF SEPARATION AND GENERAL RELEASE This Mutual Agreement of Separation and General Release (the “Agreement”) is entered into by and between Primoris Services Corporation (referred to throughout this Agreement as “Employer”) and John F. Moreno, Jr. (“Employee”). The term “Party” or “Parties” as used herein shall refer to Employer, Employee, or both, as may be appropriat

May 10, 2023 S-8

As filed with the Securities and Exchange Commission on May 10, 2023

As filed with the Securities and Exchange Commission on May 10, 2023 Registration No.

May 10, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Primoris Services Corporation (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

May 10, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file numbe

May 9, 2023 EX-10

2023 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K, as filed with the SEC on May 9, 2023).

Exhibit 10.1 Primoris Services Corporation 2023 Equity Incentive Plan 1.ESTABLISHMENT, PURPOSE AND TERM OF PLAN. 1.1Establishment. The Primoris Services Corporation 2023 Equity Incentive Plan (the “Plan”) is effective as of May 3rd, 2023, the date of its approval by the stockholders of the Company (the “Effective Date”). Following the Effective Date: (i) no additional awards may be granted under t

May 9, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 3, 2023 Date of Report (Date of earliest event reported) Primoris Services Corp

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 3, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

May 9, 2023 EX-99

Primoris Services Corporation Reports First Quarter 2023 Results

Exhibit 99.1 Primoris Services Corporation Reports First Quarter 2023 Results Dallas, TX – May 9, 2023– Primoris Services Corporation (NYSE: PRIM) (“Primoris” or the “Company”) today announced financial results for its first quarter ended March 31, 2023 and provided comments on the Company’s operational performance and outlook for 2023. For the first quarter of 2023, Primoris reported the followin

April 3, 2023 25

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number 001-34145 Primoris Services Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 25 NOTIFICATION OF REMOVAL FROM LISTING AND/OR REGISTRATION UNDER SECTION 12(b) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number 001-34145 Primoris Services Corporation The Nasdaq Stock Market LLC (Exact name of Issuer as specified in its charter, and name of Exchange where security is listed and/or register

March 27, 2023 ARS

ARS

2022 ANNUAL REPORT TH E TH E TH E POWE R POWE R POWE R POWE R OF OF “ We continue to take significant steps to reposition Primoris for long-term success in higher-growth, higher-margin end markets.

March 24, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted

March 24, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 24, 2023 Date of Report (Date of earliest event reported) Primoris Services C

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 24, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

March 24, 2023 EX-99

Primoris Services Corporation Announces Transfer of Listing of Common Stock to the New York Stock Exchange

PRESS RELEASE Primoris Services Corporation Announces Transfer of Listing of Common Stock to the New York Stock Exchange Dallas, TX – March 24, 2023 – Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or the “Company”) announced today that it will transfer the listing of its common stock from The Nasdaq Stock Market LLC (“Nasdaq”) to the New York Stock Exchange (“NYSE”).

March 24, 2023 8-A12B

Form 8-A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 Primoris Services Corporation (Exact name of registrant as specified in its charter) Delaware 20-4743916 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identificati

March 24, 2023 CERT

NYSE CERTIFICATION

New York Stock Exchange 11 Wall Street New York, NY 10005 Tel: +1 212.656.3000 nyse.com March 24, 2023 Chief, Information Technology Securities and Exchange Commission Division of Corporate Finance 100 F Street, NE MS 3040 Washington, DC 20549 To whom it may concern: The New York Stock Exchange certifies its approval for listing and registration of the Common Stock, $0.0001 par value, of Primoris

February 28, 2023 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Structures, Inc. California ARB Chile, Ltda. Chile Auger Services, Inc. Louisiana B Comm Constructors, LLC Texas Cardinal Contractors, Inc. Florida Comtrac Services, LLC Delaware Edison Power Constructors, Inc. Arizona Future Infrastructure Holdings, LLC Delaware Futu

February 28, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 28, 2023 EX-4.2

Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

Exhibit 4.2 Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Primoris Services Corporation (“the Company”, “we”, “our”, or “us”) currently has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, (“the Exchange Act”) our common stock, par value $0.0001 per share. The following desc

February 27, 2023 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2022 Results

Exhibit 99.1 Primoris Services Corporation Reports Fourth Quarter and Full Year 2022 Results Dallas, TX – Feb. 27, 2023– Primoris Services Corporation (NASDAQ GS: PRIM) (“Primoris” or the “Company”) today announced financial results for its fourth quarter and full year ended December 31, 2022 and provided the Company’s initial outlook for 2023. For the full year 2022, Primoris reported the followi

February 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 22, 2023 Date of Report (Date of earliest event reported) Primoris Service

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 22, 2023 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Nu

February 10, 2023 SC 13G

PRIM / Primoris Services Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

SC 13G 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Primoris Services Corp (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

February 9, 2023 SC 13G/A

PRIM / Primoris Services Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01708-primorisservicescorp.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Primoris Services Corp. Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to

February 6, 2023 SC 13G/A

PRIM / Primoris Services Corp / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* Primoris Services Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

January 25, 2023 SC 13G

PRIM / Primoris Services Corp / BlackRock Inc. Passive Investment

SC 13G 1 us74164f1030012523.txt us74164f1030012523.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate bo

November 10, 2022 SC 13G/A

PRIM / Primoris Services Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 8)* Name of issuer: Primoris Services Corp. Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: October 31, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

November 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

November 7, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 3, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (C

November 7, 2022 EX-99

Primoris Services Corporation Reports Third Quarter 2022 Results

? ? Exhibit 99.1 ? Primoris Services Corporation Reports Third Quarter 2022 Results ? Dallas, TX ? November 7, 2022? Primoris Services Corporation (NASDAQ GS: PRIM) (?Primoris? or the ?Company?) today announced financial results for its third quarter ended September 30, 2022 and confirmed the Company?s outlook. ? For the third quarter 2022, Primoris reported the following highlights(1): ? Revenue

October 12, 2022 EX-99.1

Page No.

Exhibit 99.1 ? ? PLH Group, Inc. and Subsidiaries Consolidated Financial Statements as of and for the Year Ended December 31, 2021 and Independent Auditor?s Report ? PLH Group, Inc. and Subsidiaries Table of Contents December 31, 2021 ? Page No. ? ? ? INDEPENDENT AUDITOR?S REPORT ? 1 ? ? ? CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR THE YEAR ENDED DECEMBER 31, 2021: ? ? ? ? ? Consolidated Bala

October 12, 2022 EX-99.2

Page No.

Exhibit 99.2 ? ? PLH Group, Inc. and Subsidiaries Condensed Consolidated Financial Statements as of and for the Three Months Ended March 31, 2022 ? ? PLH Group, Inc. and Subsidiaries Table of Contents March 31, 2022 ? Page No. ? ? ? CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AS OF AND FOR THE THREE MONTHS ENDED MARCH 31, 2022 (UNAUDITED): ? ? ? ? ? Condensed Consolidated Balance Sheet ? 2 ? ? ? C

October 12, 2022 8-K/A

Financial Statements and Exhibits

19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 1, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Num

October 12, 2022 EX-99.3

UNAUDITED PRO FORMA CONSOLIDATED COMBINED FINANCIAL STATEMENTS

? ? Exhibit 99.3 ? UNAUDITED PRO FORMA CONSOLIDATED COMBINED FINANCIAL STATEMENTS ? Introduction ? On August 1, 2022, Primoris Services Corporation, a Delaware corporation (?Primoris?, ?we?, ?us?, ?our?), completed its previously announced acquisition of PLH Group, Inc. (?PLH?). Pursuant to the terms of that Agreement and Plan of Merger (the ?Merger Agreement?) dated as of June 27, 2022, Primoris

August 9, 2022 8-K

Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 3, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Com

August 9, 2022 EX-99

Primoris Services Corporation Reports Second Quarter 2022 Results

? ? Exhibit 99.1 ? Primoris Services Corporation Reports Second Quarter 2022 Results ? Dallas, TX ? August 8, 2022? Primoris Services Corporation (NASDAQ GS: PRIM) (?Primoris? or the ?Company?) today announced financial results for its second quarter ended June 30, 2022 and provided the Company?s outlook for 2022. ? For the second quarter 2022, Primoris reported the following(1): ? Record revenue

August 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 1, 2022 EX-99

Primoris Services Corporation Completes PLH Group Acquisition

Exhibit 99.1 PRESS RELEASE Primoris Services Corporation Completes PLH Group Acquisition ? DALLAS, TX ? August 1, 2022 ? Primoris Services Corporation (NASDAQ Global Select: PRIM) (?Primoris? or ?Company?), a leading provider of specialty contracting services in North America, announced today that it has closed its acquisition of PLH Group, Inc. (?PLH Group? or ?PLH?) in an all-cash transaction va

August 1, 2022 EX-10

Third Amended and Restated Credit Agreement by and among Primoris Services Corporation, CIBC Bank USA and the several other financial institutions party thereto. (incorporated by reference to Exhibit 10.1 to Primoris’ Current Report on Form 8-K filed on August 1, 2022)

Exhibit 10.1 ? ? THIRD AMENDED AND RESTATED CREDIT AGREEMENT dated as of August 1, 2022 Among PRIMORIS SERVICES CORPORATION as Borrower THE VARIOUS FINANCIAL INSTITUTIONS PARTY HERETO as Lenders and ? CIBC BANK USA as Agent, Joint Bookrunner, Joint Lead Arranger Collateral Agent and Issuing Lender ? Bank of the West as Joint Bookrunner, Joint Lead Arranger Co-Documentation Agent and Issuing Lender

August 1, 2022 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 1, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Com

June 27, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 June 24, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Comm

June 27, 2022 EX-99.1

Primoris Services Corporation to Expand Utility Business through Acquisition of PLH Group, Inc.

Exhibit 99.1 PRESS RELEASE Primoris Services Corporation to Expand Utility Business through Acquisition of PLH Group, Inc. Dallas, Texas ? June 27, 2022 ? Primoris Services Corporation (NASDAQ Global Select: PRIM) (?Primoris? or the ?Company?) announced today that it has entered into a definitive merger agreement to acquire PLH Group, Inc. (?PLH Group? or ?PLH?) in an all-cash transaction valued a

June 27, 2022 EX-99.2

Forward Looking Statements 1 This presentation contains forward - looking statements within the meaning of the federal securities laws. These statements give t he current expectations of the Company’s management. Words such as “could,” “will,” “may,”

Exhibit 99.2 Primoris to Acquire PLH Group Establishing a Leading Utilities Services Provider June 2022 Forward Looking Statements 1 This presentation contains forward - looking statements within the meaning of the federal securities laws. These statements give t he current expectations of the Company?s management. Words such as ?could,? ?will,? ?may,? ?assume,? ?forecast,? ?strategy,? ?guidance,?

June 27, 2022 EX-2.1

Agreement and Plan of Merger, dated June 24, 2022, among Primoris Services Corporation, PLH Group, Inc., Amp Merger Sub, Inc. and Shareholder Representative Services LLC, as Stockholder Representative. (incorporated by reference to Exhibit 2.1 to Primoris’ Current Report on Form 8-K filed on June 27, 2022)

AGREEMENT AND PLAN OF MERGER BY AND AMONG PLH GROUP, INC. AMP MERGER SUB, INC. PRIMORIS SERVICES CORPORATION AND SHAREHOLDER REPRESENTATIVE SERVICES LLC, as Stockholder Representative Dated as of June 24, 2022 ? ? 1 ? TABLE OF CONTENTS ? Article I Definitions 1 1.1 Certain Definitions 1 1.2 Terms Defined Elsewhere in this Agreement 16 1.3 Other Definitional and Interpretive Matters 19 Article II T

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 10, 2022 S-8

As filed with the Securities and Exchange Commission on May 10, 2022

As filed with the Securities and Exchange Commission on May 10, 2022 Registration No.

May 10, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Primoris Services Corporation (Exact Name of Registrant as Specified in its Charter) Table 1?Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

May 9, 2022 EX-10

2022 Primoris Services Corporation Employee Stock Purchase Plan (incorporated herein by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K, as filed with the SEC on May 9, 2022)

2022 PRIMORIS SERVICES CORPORATION EMPLOYEE STOCK PURCHASE PLAN 1. Purpose The purpose of this 2022 Primoris Services Corporation Employee Stock Purchase Plan (the ?Plan?) is to provide employees of the Company and its Designated Subsidiaries with an opportunity to purchase Common Stock through one-time or accumulated Contributions. The Plan is not intended to qualify as an ?employee stock purchas

May 9, 2022 EX-99

Primoris Services Corporation Reports First Quarter 2022 Results

? ? Exhibit 99.1 ? Primoris Services Corporation Reports First Quarter 2022 Results ? Dallas, TX ? May 9, 2022? Primoris Services Corporation (NASDAQ GS: PRIM) (?Primoris? or the ?Company?) today announced financial results for its first quarter ended March 31, 2022 and provided the Company?s outlook for 2022. ? For the first quarter 2022, Primoris reported the following(1): ? Revenue of $784.4 mi

May 9, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events, Submission of Matters to a Vote of Security Holders

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 4, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Commis

April 7, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 1, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Comm

April 7, 2022 EX-10.4

Employment Agreement dated April 1, 2022, by and between Primoris Services Corporation and John M. Perisich (incorporated by reference to Exhibit 10.4 to Primoris’ Current Report on Form 8-K filed on April 7, 2022)

Exhibit 10.4 AMENDED AND RESTATED EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND John M. Perisich April 1, 2022 ? ? AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this ?Agreement?) is made and entered into as of April 1, 2022 (the ?Effective Date?) by and between Primoris Services Corporation, a Delaware corporation (the ?Employer?), and J

April 7, 2022 EX-10.1

Employment Agreement dated April 1, 2022, by and between Primoris Services Corporation and

Exhibit 10.1 AMENDED AND RESTATED EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Thomas McCormick April 1, 2022 ? AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this ?Agreement?) is made and entered into as of April 1, 2022 (the ?Effective Date?), by and between Primoris Services Corporation, a Delaware corporation (the ?Employer?), and Th

April 7, 2022 EX-10.3

Employment Agreement dated April 1, 2022, by and between Primoris Services Corporation and Ken M. Dodgen (incorporated by reference to Exhibit 10.3 to Primoris’ Current Report on Form 8-K filed on April 7, 2022)

Exhibit 10.3 AMENDED AND RESTATED EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Ken M. Dodgen April 1, 2022 ? AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this ?Agreement?) is made and entered into as of April 1, 2022 (the ?Effective Date?), by and between Primoris Services Corporation, a Delaware corporation (the ?Employer?), and Ken M

April 7, 2022 EX-10.2

Employment Agreement dated April 1, 2022, by and between Primoris Services Corporation and John F. Moreno, Jr. (incorporated by reference to Exhibit 10.2 to Primoris’ Current Report on Form 8-K filed on April 7, 2022)

Exhibit 10.2 ? AMENDED AND RESTATED EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND John F. Moreno, Jr. April 1, 2022 ? ? AMENDED AND RESTATED EMPLOYMENT AGREEMENT THIS AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this ?Agreement?) is made and entered into as of April 1, 2022 (the ?Effective Date?), by and between Primoris Services Corporation, a Delaware corporation (the ?Employer?),

March 25, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           )

DEF 14A 1 tm2130832-2def14a.htm DEF 14A TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.           ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for U

March 2, 2022 8-K/A

Results of Operations and Financial Condition

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 24, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction

March 1, 2022 EX-4.2

Description of Registrant’s Securities (incorporated by reference to Exhibit 4.2 to our Annual Report on Form 10-K, as filed with the SEC on March 1, 2022)

Exhibit 4.2 Description of the Registrant?s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Primoris Services Corporation (?the Company?, ?we?, ?our?, or ?us?) currently has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, (?the Exchange Act?) our common stock, par value $0.0001 per share. The following desc

March 1, 2022 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 ? Subsidiaries and Equity Investments of the Registrant ? ? ? ? Subsidiary Jurisdiction of Organization ? ? ? ARB, Inc. ? California ARB Structures, Inc. ? California ARB Chile, Ltda. ? Chile Cardinal Contractors, Inc. ? Florida Comtrac Services, LLC ? Delaware Future Infrastructure Holdings, LLC ? Delaware Future Infrastructure, LLC ? Texas Future Telecom Purchaser, LLC ? Delaware Ga

March 1, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 28, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 24, 2022 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (

February 28, 2022 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2021 Results

? ? Exhibit 99 ? Primoris Services Corporation Reports Fourth Quarter and Full Year 2021 Results ? Dallas, TX ? Feb.

February 10, 2022 SC 13G/A

PRIM / Primoris Services Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 7)* Name of issuer: Primoris Services Corp. Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is file

February 8, 2022 SC 13G/A

PRIM / Primoris Services Corp / DIMENSIONAL FUND ADVISORS LP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Primoris Services Corp (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this

February 4, 2022 SC 13G/A

PRIM / Primoris Services Corp / WELLINGTON MANAGEMENT GROUP LLP - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Primoris Services Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whi

February 3, 2022 SC 13G/A

PRIM / Primoris Services Corp / BlackRock Inc. Passive Investment

us74164f1030020222.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuan

December 21, 2021 EX-3

Amended and Restated Bylaws of Primoris Services Corporation, as amended December 15, 2021 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K, as filed with the SEC on December 21, 2021)

? ? Exhibit 3.1 ? AMENDED AND RESTATED BYLAWS OF PRIMORIS SERVICES CORPORATION a Delaware corporation ? PREAMBLE These bylaws are subject to, and governed by, the General Corporation Law of the State of Delaware (the ?Delaware General Corporation Law?) and the certificate of incorporation, as it may be amended from time to time, of PRIMORIS SERVICES CORPORATION, a Delaware corporation (the ?Corpor

December 21, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 December 15, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (

November 9, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

November 8, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 3, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (C

November 8, 2021 EX-99

Primoris Services Corporation Reports Third Quarter 2021 Results

? ? Exhibit 99 ? Primoris Services Corporation Reports Third Quarter 2021 Results ? Dallas, TX ? Nov.

August 4, 2021 EX-99

Primoris Services Corporation Reports Second Quarter 2021 Results

? ? Exhibit 99.1 ? Primoris Services Corporation Reports Second Quarter 2021 Results ? Dallas, TX ? Aug. 3, 2021? Primoris Services Corporation (NASDAQ GS: PRIM) (?Primoris? or ?Company?) today announced financial results for its second quarter ended June 30, 2021 and updated the Company?s outlook. ? For the second quarter 2021, Primoris reported the following highlights: ? Revenue of $881.6 milli

August 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 3, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Com

July 12, 2021 SC 13G/A

PRIM / Primoris Services Corp / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: Primoris Services Corp. Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: June 30, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ?

May 6, 2021 EX-99

Primoris Services Corporation Reports First Quarter 2021 Results

? ? Exhibit 99.1 ? Primoris Services Corporation Reports First Quarter 2021 Results ? Dallas, TX ? May 5, 2021? Primoris Services Corporation (NASDAQ GS: PRIM) (?Primoris? or ?Company?) today announced financial results for its first quarter ended March 31, 2021 and updated the Company?s outlook. ? For the first quarter 2021, Primoris reported the following highlights: ? Revenue of $818.3 million,

May 6, 2021 10-Q

Quarterly Report - 10-Q

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 6, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events, Submission of Matters to a Vote of Security Holders

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 4, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (Commis

March 25, 2021 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.???????? ??) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitte

March 19, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 17, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as Specified in Its Charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

March 19, 2021 EX-1.1

Underwriting Agreement, dated March 17, 2021, among Primoris Services Corporation, Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC and UBS Securities LLC

Exhibit 1.1 EXECUTION VERSION Primoris Services Corporation 4,500,000 Shares of Common Stock Underwriting Agreement March 17, 2021 Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC, UBS Securities LLC As representatives (the ?Representatives?) of the several Underwriters named in Schedule I hereto, c/o Goldman Sachs & Co. LLC 200 West Street, New York, New York 10282 c/o Morgan Stanley & Co. LLC 1

March 19, 2021 424B5

CALCULATION OF REGISTRATION FEE CHART Title of Securities to be Registered Amount to be Registered(1) Proposed Maximum Offering Price Per Share Proposed Maximume Aggregatee Offering Price Amount of Registration Fee(2) Common stock, par value $0.0001

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS 2 TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

March 16, 2021 424B5

Subject to completion, dated March 16, 2021

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS 2 TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No.

March 9, 2021 EX-99

Future Infrastructure Holdings, LLC and Subsidiaries NOTES TO CONSOLIDATED FINANCIAL STATEMENTS December 31, 2020 and 2019

Exhibit 99.1 Consolidated Financial Statements and Report of Independent Certified Public Accountants Future Infrastructure Holdings, LLC and Subsidiaries December 31, 2020 and 2019 Contents Page Report of Independent Certified Public Accountants 3 Consolidated Financial Statements Consolidated balance sheets 5 Consolidated statements of income 6 Consolidated statements of changes in members? equi

March 9, 2021 EX-99.2

UNAUDITED PRO FORMA CONSOLIDATED COMBINED FINANCIAL STATEMENTS

Exhibit 99.2 UNAUDITED PRO FORMA CONSOLIDATED COMBINED FINANCIAL STATEMENTS Introduction On January 15, 2021, Primoris Services Corporation, a Delaware corporation (?Primoris?, ?we?, ?us?, ?our?), completed its previously announced acquisition of Future Infrastructure Holdings, LLC, a Delaware limited liability company (?FIH?). Pursuant to the terms of that Agreement and Plan of Merger (the ?Merge

March 9, 2021 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 January 11, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numb

February 23, 2021 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 ? Subsidiaries and Equity Investments of the Registrant ? ? ? ? Subsidiary Jurisdiction of Organization ? ? ? ARB, Inc. ? California ARB Structures, Inc. ? California ARB Chile, Ltda. ? Chile Cardinal Contractors, Inc. ? Florida James Construction Group, LLC ? Florida Juniper Rock Corporation ? California OnQuest, Inc. ? California OnQuest Canada, ULC (formerly Born Heaters Canada) ?

February 23, 2021 10-K

Annual Report - 10-K

Table of Contents ? ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 22, 2021 EX-99

Primoris Services Corporation Reports Fourth Quarter and Full Year 2020 Results

Exhibit 99.1 Primoris Services Corporation Reports Fourth Quarter and Full Year 2020 Results Dallas, TX – Feb. 22, 2021– Primoris Services Corporation (NASDAQ GS: PRIM) (“Primoris” or “Company”) today reported financial results for the fourth quarter and full year of 2020 and provided the Company’s financial outlook. For the full year 2020, Primoris reported the following highlights: ● Record reve

February 22, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

? ? 19 ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 19, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) ? ? ? ? ? ? Delaware 001-34145 20-4743916 (State or other jurisdiction (

February 12, 2021 SC 13G

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Primoris Services Corp (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)* Name of issuer: Primoris Services Corp. Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is file

February 4, 2021 SC 13G

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Primoris Services Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 74164F103 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

January 29, 2021 SC 13G/A

SC 13G/A

us74164f1030012921.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuan

January 15, 2021 S-8

- FORM S-8

As filed with the Securities and Exchange Commission on January 15, 2021 Registration No.

January 15, 2021 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Completion of Acquisition or Disposition of Assets, Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 11, 2021 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

January 15, 2021 EX-99.1

Primoris Services Corporation Completes Future Infrastructure Acquisition

Exhibit 99.1 PRESS RELEASE Primoris Services Corporation Completes Future Infrastructure Acquisition DALLAS, TX – Jan. 15, 2021 – Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”), a leading provider of specialty contracting services in North America, announced today that it has closed its acquisition of Future Infrastructure Holdings, LLC (“Future Infrastructure

January 15, 2021 EX-99.2

Primoris Services Corporation Form of Inducement Award Restricted Stock Unit Agreement.

Exhibit 99.2 PRIMORIS SERVICES CORPORATION INDUCEMENT AWARD RESTRICTED STOCK UNIT AGREEMENT This Restricted Stock Unit Agreement (this “Agreement”) is made and entered into as of (the “Grant Date”) by and between Primoris Services Corporation, a Delaware corporation (the “Company”), and , an employee of the Company or its subsidiary (“Executive”). RECITALS A. The Company desires to recognize the c

January 15, 2021 EX-99.1

Primoris Services Corporation Form of Inducement Award Stock Purchase Right Agreement.

Exhibit 99.1 PRIMORIS SERVICES CORPORATION INDUCEMENT AWARD STOCK PURCHASE RIGHT AGREEMENT This Stock Purchase Right Agreement (this “Agreement”) is made and entered into as of by and between Primoris Services Corporation, a Delaware corporation (the “Company”), and , an employee of the Company or its subsidiary (“Executive”). RECITALS A. The Company desires to recognize the contribution Executive

January 15, 2021 EX-10.1

Second Amended and Restated Credit Agreement with CIBC Bank USA, as administrative agent, collateral agent and co-lead arranger, The Bank of the West, as co-lead arranger, and the financial institutions party thereto

Exhibit 10.1 SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of January 15, 2021 among PRIMORIS SERVICES CORPORATION, as Borrower, THE VARIOUS FINANCIAL INSTITUTIONS PARTY HERETO, as Lenders, and CIBC BANK USA, as Administrative Agent, Joint Bookrunner, Joint Lead Arranger, Co-Documentation Agent and Collateral Agent Bank of the West as Joint Bookrunner, Joint Lead Arranger and Co-Documentat

January 15, 2021 EX-2.2

Amendment No 1. to Agreement and Plans of Merger, dated as of January 11, 2021 (incorporated by reference to Exhibit 2.2 to our Current Report on Form 8-K, as filed with the SEC on January 15, 2021)

Exhibit 2.2 AMENDMENT NO. 1 TO AGREEMENT AND PLAN OF MERGER This Amendment No. 1 (this "Amendment") to the Agreement and Plan of Merger (the "Merger Agreement"), dated December 14, 2020, by and among Future Infrastructure Holdings, LLC, Primoris Services Corporation, Primoris Merger Sub, LLC and Tower Arch Capital, L.P., solely in its capacity as representative as set forth in the Merger Agreement

December 15, 2020 EX-99.1

Primoris Services Corporation to Acquire Future Infrastructure Holdings, LLC To Establish Leading Platform in Telecommunication Services

Exhibit 99.1 PRESS RELEASE Primoris Services Corporation to Acquire Future Infrastructure Holdings, LLC To Establish Leading Platform in Telecommunication Services DALLAS, TEXAS, December 14, 2020—Primoris Services Corporation (NASDAQ Global Select: PRIM), (“Primoris” or the “Company”), a leading provider of specialty contracting services in North America, today announced that it has entered into

December 15, 2020 EX-99.3

Investor Call Transcript

Exhibit 99.3 Corrected Transcript 15-Dec-2020 Primoris Services Corp.(PRIM) Acquisition of Future Infrastructure Holdings, LLC by Primoris Services Corporation Call CORPORATE PARTICIPANTS Brook Wootton Vice President-Investor Relations, Primoris Services Corp. Thomas E. McCormick Chief Executive Officer, President & Director, Primoris Services Corp. Ken M. Dodgen Chief Financial Officer & Executiv

December 15, 2020 EX-2.1

Agreement and Plan of Merger, dated December 14, 2020, among Primoris Services Corporation, Future Infrastructure Holdings, LLC, Primoris Merger Sub, LLC and Tower Arch Capital, L.P. (incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K, as filed with the SEC on December 15, 2020)

Exhibit 2.1 Execution Version Agreement and Plan of Merger by and among FUTURE INFRASTRUCTURE HOLDINGS, LLC, Primoris Services Corporation, Primoris Merger Sub, LLC, and the Representative named herein December 14, 2020 TABLE OF CONTENTS Page Article I THE MERGER 5 1.01 The Merger 5 1.02 Filing of Merger Certificate; Effective Time 5 1.03 Effect of the Merger; Further Assurances 6 1.04 Conversion

December 15, 2020 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 December 14, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

December 15, 2020 EX-99.2

Primoris to Acquire Future Infrastructure Holdings, LLC Establishing a Leading Telecom Services Platform December 14, 2020

Exhibit 99.2 Primoris to Acquire Future Infrastructure Holdings, LLC Establishing a Leading Telecom Services Platform December 14, 2020 Forward Looking Statements 1 Transaction Overview This presentation contains forward - looking statements within the meaning of the federal securities laws. These statements give the current expectations of the Company’s management. Words such as “could,” “will,”

November 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 5, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

November 5, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

September 24, 2020 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 1, 2020 Date of Report (Date of earliest event reported) Primoris Services C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 1, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

September 1, 2020 S-3ASR

- S-3ASR

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on September 1, 2020 Registration No.

September 1, 2020 EX-4.5

Form of Subordinated Indenture

Exhibit 4.5 PRIMORIS SERVICES CORPORATION and Trustee INDENTURE Dated as of , 20 SUBORDINATED DEBT SECURITIES CROSS-REFERENCE TABLE (1) Section of Trust Indenture Act of 1939, as amended Section of Indenture 310(a) 6.09 310(b) 6.08 6.10 310(c) Inapplicable 311(a) 6.13 311(b) 6.13 311(c) Inapplicable 312(a) 4.01 4.04 312(b) 4.04(c) 312(c) 4.04(c) 313(a) 4.03 313(b) 4.03 313(c) 4.03 313(d) 4.03 314(

September 1, 2020 EX-4.3

Form of Senior Indenture

Exhibit 4.3 PRIMORIS SERVICES CORPORATION and , Trustee INDENTURE Dated as of , 20 SENIOR DEBT SECURITIES CROSS-REFERENCE TABLE(1) Section of Trust Indenture Act of 1939, as amended Section of Indenture 310(a) 6.09 310(b) 6.08 6.10 310(c) Inapplicable 311(a) 6.13 311(b) 6.13 311(c) Inapplicable 312(a) 4.01 4.04 312(b) 4.04(c) 312(c) 4.04(c) 313(a) 4.03 313(b) 4.03 313(c) 4.03 313(d) 4.03 314(a) 4.

August 4, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

August 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 31, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number) (

August 4, 2020 EX-3.1

Amended and Restated Bylaws of Primoris Services Corporation, as amended August 2, 2019 (*)

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF RHAPSODY ACQUISITION CORP. a Delaware corporation PREAMBLE These bylaws are subject to, and governed by, the General Corporation Law of the State of Delaware (the “Delaware General Corporation Law”) and the certificate of incorporation, as it may be amended from time to time, of RHAPSODY ACQUISITION CORPORATION, a Delaware corporation (the “Corporation”).

August 4, 2020 EX-99

PRIMORIS SERVICES CORPORATION ANNOUNCES 2020 SECOND QUARTER FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2020 SECOND QUARTER FINANCIAL RESULTS Ø Board of Directors Declares $0.06 Per Share Cash Dividend Financial Highlights ● 2020 Q2 revenue of $908.2 million, compared to $789.9 million in 2019 Q2 ● 2020 Q2 net income attributable to Primoris of $33.0 million, or $0.68 per fully diluted share, compared to $17.8 million, or $0.35 per fully diluted s

July 24, 2020 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 EXHIBIT 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the shares of Common Stock, $0.0001 par value per share, of Primoris Services Corporation, a Delaware corporation,

July 24, 2020 SC 13D/A

PRIM / Primoris Services Corp. / Pratt Brian - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 5)* PRIMORIS SERVICES CORPORATION (Name of Issuer) Common Stock, $0.0001 par value (Title of Class of Securities) 74164F103 (CUSIP Number) Brian Pratt 5950 Berkshire Ln, Ste. 800 Dallas, Texas 75225 Tel: (214) 220-3423 With a Copy to: Andrew Rosel

July 7, 2020 EX-99

PRIMORIS SERVICES CORPORATION APPOINTS TWO NEW MEMBERS TO ITS BOARD OF DIRECTORS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION APPOINTS TWO NEW MEMBERS TO ITS BOARD OF DIRECTORS Dallas, TX – July 7, 2020 – Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that its Board of Directors has appointed Patti Wagner and Terry McCallister as new directors, effective July 1, 2020. Ms. Wagner’s and Mr. McCallister’s appointed terms will ex

July 7, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 July 1, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number) (I

May 5, 2020 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2020 FIRST QUARTER FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2020 FIRST QUARTER FINANCIAL RESULTS Ø Board of Directors Declares $0.06 Per Share Cash Dividend Financial Highlights · 2020 Q1 revenue of $743.2 million, compared to $661.6 million in 2019 Q1 · 2020 Q1 net loss attributable to Primoris of ($3.7 million), or ($0.08) per fully diluted share, compared to net income of $1.9 million, or $0.04 per fu

May 5, 2020 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file numbe

May 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 1, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number) (I.

April 21, 2020 DEFA14A

PRIM / Primoris Services Corp. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

March 26, 2020 DEF 14A

definitive proxy statement for the 2020 Annual Meeting of Stockholders;

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 25, 2020 EX-4.2

the description of the Registrant's securities contained on Exhibit 4.2 to the Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 2019, filed on February 25, 2020, including any amendments or reports filed for the purpose of updating such description.

Exhibit 4.2 Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 Primoris Services Corporation (“the Company”, “we”, “our”, or “us”) currently has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, (“the Exchange Act”) our common stock, par value $0.0001 per share. The following desc

February 25, 2020 EX-10.16

Agreement for Services, dated January 1, 2020, by and among Primoris Services Corporation and David King. (incorporated by reference to Exhibit 10.16 to our Annual Report on Form 10-K, as filed with the SEC on February 25, 2020) (#)

Exhibit 10.16 AGREEMENT FOR SERVICES This Agreement for Services (“Agreement”) is made and entered into as of January 1, 2020 between Primoris Services Corporation, a Delaware corporation (“PRIM”), and David King, an individual (hereinafter referred to as “COB/Advisor”). PRIM and COB/Advisor may be individually referred to as “Party” or collectively referred to herein as the “Parties.” A. INTRODUC

February 25, 2020 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Structures, Inc. California ARB Chile, Ltda. Chile Cardinal Contractors, Inc. Florida James Construction Group, LLC Florida Juniper Rock Corporation California OnQuest, Inc. California OnQuest Canada, ULC (formerly Born Heaters Canada) Alberta OnQuest Heaters, Inc. De

February 25, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 21, 2020 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

February 25, 2020 10-K

Annual Report - 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 25, 2020 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS · Board of Directors Declares $0.06 Per Share Cash Dividend · Authorizes $25 Million Share Repurchase Program 2019 Full Year Financial Highlights · Record 2019 revenue of $3.1 billion, compared to $2.9 billion in 2018 · Record 2019 net income attributable to Primoris of $82.3 million, or $1.61

February 12, 2020 SC 13G/A

PRIM / Primoris Services Corp. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 4)* Name of issuer: Primoris Services Corp Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 31, 2019 Check the appropriate box to designate the rule pursuant to which this Schedule is filed

February 5, 2020 SC 13G/A

PRIM / Primoris Services Corp. / BlackRock Inc. Passive Investment

us74164f1030020520.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2019 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuan

December 16, 2019 EX-99.1

Joint Filing Agreement, dated as of December 16, 2019 by and between the Reporting Persons.

EX-99.1 EXHIBIT 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the shares of Common Stock, $0.0001 par value per share, of Primoris Services Corporation, a Delaware corporation,

December 16, 2019 SC 13D/A

PRIM / Primoris Services Corp. / Pratt Brian - SC 13D/A Activist Investment

SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* PRIMORIS SERVICES CORPORATION (Name of Issuer) Common Stock, $0.0001 par value (Title of Class of Securities) 74164F103 (CUSIP Number) Brian Pratt 5950 Berkshire Ln Dallas, Texas 75225 Tel: (214) 220-3423 With a Copy to: Andrew Rosell Winstead

December 12, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 December 9, 2019 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

December 12, 2019 EX-99.2

PRIMORIS SERVICES CORPORATION ANNOUNCES PENDING BOARD CHANGE

Exhibit 99.2 PRIMORIS SERVICES CORPORATION ANNOUNCES PENDING BOARD CHANGE Dallas, TX – December 9, 2019– Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that Brian Pratt has informed the Board of Directors of his plan to step down as a Director of the Company at the adjournment of the next regularly scheduled Board meeting in February 2020. Mr.

December 12, 2019 EX-10.1

Share Repurchase Agreement dated December 10, 2019

Exhibit 10.1 SHARE REPURCHASE AGREEMENT This Share Repurchase Agreement (this “Agreement”) is made as of December 10, 2019, by and among Primoris Services Corporation, a Delaware corporation (“Buyer”), and the shareholders of Buyer listed on Schedule A hereto (collectively, the “Sellers”). WITNESSETH: WHEREAS, the Sellers own shares of common stock, par value $0.0001 per share, of Buyer (“Common S

December 12, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES REPURCHASE OF COMMON STOCK

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES REPURCHASE OF COMMON STOCK Dallas, TX – December 11, 2019– Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that the Company has purchased 2,316,960 shares of common stock for an aggregate consideration of $50 million from Brian Pratt, a member of the Company’s Board of Directors (the “Board”).

November 5, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES EXECUTIVE TRANSITION

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES EXECUTIVE TRANSITION Dallas, TX – November 1, 2019– Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced its Board of Directors has approved an executive transition effective November 4, 2019. David King will transition out of his positon as Chief Executive Officer, while remaining as Chairman of t

November 5, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 1, 2019 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

November 5, 2019 EX-10

Employment Agreement, dated November 4, 2019, by and among Primoris Services Corporation and Thomas McCormick. (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K, as filed with the SEC on November 5, 2019) (#)

Exhibit 10.1 EMPLOYMENT AGREEMENT BETWEEN Primoris Services Corporation AND Thomas McCormick November 4, 2019 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into and becomes effective as of November 4, 2019, by and between Primoris Services Corporation, a Delaware corporation (the “Employer”), and Thomas McCormick (the “Employee”). WHEREAS, the Employer desires to

November 4, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 October 31, 2019 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number

November 4, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 THIRD QUARTER FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 THIRD QUARTER FINANCIAL RESULTS Ø Board of Directors Declares $0.06 Per Share Cash Dividend Ø Authorizes $50 Million Share Repurchase Plan Financial Highlights · 2019 Q3 revenue of $865.1 million, compared to $908.9 million in 2018 Q3 · Record 2019 Q3 net income attributable to Primoris of $35.6 million, or $0.70 per fully diluted share o C

November 4, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended September 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n

August 6, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 August 2, 2019 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Number)

August 6, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 SECOND QUARTER FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 SECOND QUARTER FINANCIAL RESULTS Ø Board of Directors Declares $0.06 Per Share Cash Dividend Ø Tom McCormick appointed to Board of Directors Financial Highlights · 2019 Q2 revenue of $789.9 million, compared to $648.8 million in 2018 Q2, a 21.7% increase o 2019 Q2 MSA revenue of $348.3 million, a 46% increase over 2018 Q2 MSA revenue · 2019

August 6, 2019 EX-10.1

Agreement for Services, dated July 1, 2019, by and among Primoris Services Corporation and Brian Pratt. (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q, as filed with the SEC on August 6, 2019) (#)

Exhibit 10.1 AGREEMENT FOR SERVICES This Agreement for Services (“Agreement”) is made and entered into as of July 1, 2019 between Primoris Services Corporation, a Delaware corporation (“PRIM”), and Brian Pratt, an individual (hereinafter referred to as “Director/Advisor”) and supersedes, in its entirety, the agreement entered into between PRIM and Director/Advisor dated August 1, 2015. PRIM and Di

August 6, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended June 30, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

May 7, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 May 7, 2019 (May 3, 2019) Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission Fi

May 7, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 FIRST QUARTER FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2019 FIRST QUARTER FINANCIAL RESULTS Ø Board of Directors Declares $0.06 Per Share Cash Dividend Ø Chairman of the Board Transition Financial Highlights · 2019 Q1 revenue of $661.6 million, compared to $504.1 million in 2018 Q1 o 2019 Q1 MSA revenue of $292.9 million, a 100% increase over 2018 Q1 MSA revenue · 2019 Q1 net income attributable to

May 7, 2019 10-Q

Quarterly Report - 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the quarterly period ended March 31, 2019 OR ☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file number

May 7, 2019 EX-10.1

Employment Agreement, dated April 1, 2019, by and among Primoris Services Corporation and John F. Moreno, Jr. (incorporated by reference to Exhibit 10.1 to our Quarterly Report on Form 10-Q, as filed with the SEC on May 7, 2019) (#)

Exhibit 10.1 EMPLOYMENT AGREEMENT BETWEEN John F. Moreno, Jr. AND Primoris Services Corporation April 1, 2019 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT is made and entered into as of April 1, 2019, (“effective Date”) (as hereafter defined), by and among Primoris Services Corporation, a Delaware corporation (the “Employer”), and John F. Moreno, Jr. (the “Employee”). WHEREAS, the Employer desir

April 4, 2019 DEF 14A

PRIM / Primoris Services Corp. DEF 14A

Use these links to rapidly review the document PROXY STATEMENT TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

April 3, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 April 3, 2019 (April 1, 2019) Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commissio

April 3, 2019 EX-99.(B)

EMPLOYMENT AGREEMENT BETWEEN John F. Moreno, Jr. AND Primoris Services Corporation April 1, 2019

Exhibit 99.2 EMPLOYMENT AGREEMENT BETWEEN John F. Moreno, Jr. AND Primoris Services Corporation April 1, 2019 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT is made and entered into as of April 1, 2019, (“effective Date”) (as hereafter defined), by and among Primoris Services Corporation, a Delaware corporation (the “Employer”), and John F. Moreno, Jr. (the “Employee”). WHEREAS, the Employer desir

April 3, 2019 EX-99

PRIMORIS SERVICES CORPORATION ANNOUNCES HIRING OF JOHN MORENO, JR AS CHIEF OPERATING OFFICER

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES HIRING OF JOHN MORENO, JR AS CHIEF OPERATING OFFICER Dallas, TX – April 1, 2019 – Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that John F. Moreno, Jr. has been hired as its Chief Operating Officer. Mr. Moreno will take over the role from Tom McCormick, who has been promoted to President of

March 27, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 March 27, 2019 (March 25, 2019) Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commiss

March 27, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION APPOINTS CARLA S. MASHINSKI AS A MEMBER OF ITS BOARD OF DIRECTORS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION APPOINTS CARLA S. MASHINSKI AS A MEMBER OF ITS BOARD OF DIRECTORS Dallas, TX – March 27, 2019 – Primoris Services Corporation (NASDAQ Global Select: PRIM) (“Primoris” or “Company”) today announced that its Board of Directors has appointed Carla S. Mashinski as a new director, effective March 25, 2019, filling a Board vacancy. Ms. Mashinski’s appointed ter

February 28, 2019 EX-99.1

PRIMORIS SERVICES CORPORATION ANNOUNCES 2018 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2018 FOURTH QUARTER AND FULL YEAR FINANCIAL RESULTS Board of Directors Declares $0.06 Per Share Cash Dividend Financial Highlights · Record 2018 revenue of $2.9 billion, compared to $2.4 billion in 2017 · 2018 Q4 revenue of $877.7 million, compared to $579.0 million in 2017 Q4 · Record 2018 net income attributable to Primoris of $77.5 million, o

February 28, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 February 28, 2019 Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Commission File Numbe

February 28, 2019 10-K

PRIM / Primoris Services Corp. 10-K (Annual Report)

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-34

February 28, 2019 EX-21.1

Subsidiaries and equity investments of Primoris Services Corporation (*)

Exhibit 21.1 Subsidiaries and Equity Investments of the Registrant Subsidiary Jurisdiction of Organization ARB, Inc. California ARB Structures, Inc. California ARB Chile, Ltda. Chile Cardinal Contractors, Inc. Florida GML Coatings, LLC Florida James Construction Group, LLC Florida Juniper Rock Corporation California OnQuest, Inc. California OnQuest Canada, ULC (formerly Born Heaters Canada) Albert

February 12, 2019 SC 13G/A

PRIM / Primoris Services Corp. / VANGUARD GROUP INC Passive Investment

primorisservicescorp.htm - Generated by SEC Publisher for SEC Filing SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3 )* Name of issuer: Primoris Services Corp Title of Class of Securities: Common Stock CUSIP Number: 74164F103 Date of Event Which Requires Filing of this Statement: December 31, 2018 Check the appropri

February 11, 2019 SC 13G

PRIM / Primoris Services Corp. / Van Berkom & Associates Inc. - 13G AS OF DECEMBER 31, 2018 Passive Investment

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) Primoris Services Corp (PRIM) - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2018 - (Date of Event Which Requires Fil

February 8, 2019 SC 13G

PRIM / Primoris Services Corp. / BlackRock Inc. Passive Investment

us74164f1030020719.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: ) Primoris Services Corp - (Name of Issuer) Common Stock - (Title of Class of Securities) 74164F103 - (CUSIP Number) December 31, 2018 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant

November 6, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 November 6, 2018 (November 2, 2018) Date of Report (Date of earliest event reported) Primoris Services Corporation (Exact name of Registrant as specified in its charter) Delaware 001-34145 20-4743916 (State or other jurisdiction (Com

November 6, 2018 EX-99.1

For the three months ended September 30,

Exhibit 99.1 PRIMORIS SERVICES CORPORATION ANNOUNCES 2018 THIRD QUARTER FINANCIAL RESULTS Board of Directors Declares $0.06 Per Share Cash Dividend Financial Highlights · 2018 Q3 revenues of $908.9 million, record level and a 49% increase over 2017 Q3 revenues · 2018 Q3 operating income of $51.1 million, a 83% increase over 2017 Q3 operating income · 2018 Q3 net income attributable to Primoris of

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