Director — James A. Greer, Oscar K. Brown: The filing discloses the appointment of two new directors to the board, which is a routine governance action and not a departure of a senior executive.

Results of Operations and Financial Condition On August 4, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended June 30, 2026. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability o…

Other Events Declaration of Cash Dividends to Stockholders Events On July 31, 2026, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of September 30, 2026, payable on or about October 15, 2026. ​

Other Events Declaration of Cash Dividends to Stockholders Events On July 31, 2026, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of September 30, 2026, payable on or about October 15, 2026. ​

Results of Operations and Financial Condition On August 4, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended June 30, 2026. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability o…

Other Events Declaration of Cash Dividends to Stockholders Events On July 31, 2026, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of September 30, 2026, payable on or about October 15, 2026. ​

Results of Operations and Financial Condition On August 4, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended June 30, 2026. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability o…

Regulation FD On June 22, 2026, the Company issued a press release announcing a series of business updates including the departure of its COO, an update to its financial outlook for the full year of 2026, the award of several projects during the second quarter of 2026, an update regarding its share repurchase activity, and the Company’s upcoming investor conference participation. A copy of the Company’s press release, dated June 22, 2026, is furnished hereto as Exhibit 99.1. ​ The information…

Results of Operations and Financial Condition On June 22, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris” or the “Company”), issued a press release providing an update to its financial outlook for the full year of 2026, which it last updated in May 2026 as part of its first quarter earnings announcement, as further detailed in the press release furnished hereto as Exhibit 99.1. ​

COO — Jeremy Kinch: Mr. Kinch departed the company as COO, and his responsibilities will be managed by President and CEO Koti Vadlamudi while a permanent successor is sought.

Chair of the Strategy and Risk Committee — Michael E. Ching: Michael E. Ching was appointed as the chair of the Strategy and Risk Committee.

Other Events Declaration of Cash Dividend to Stockholders ​ On April 30, 2026, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of June 30, 2026, payable on or about July 15, 2026. ​

Results of Operations and Financial Condition On May 5, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended March 31, 2026. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of…

Director — John P. Schauerman: Mr. Schauerman is retiring from the Board of Directors and will not be replaced at this time.

Other Events Declaration of Cash Dividend to Stockholders ​ On February 17, 2026, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of March 31, 2026, payable on or about April 15, 2026. ​

Results of Operations and Financial Condition On February 23, 2026, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter and year ended December 31, 2025. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to…

Other Events Declaration of Cash Dividend to Stockholders ​ On October 29, 2025, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of December 31, 2025, payable on or about January 15, 2026. ​

Results of Operations and Financial Condition On November 3, 2025, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended September 30, 2025. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liab…

President and CEO — Koti Vadlamudi: The company appointed a new President and CEO from an external source.

Other Events Declaration of Cash Dividend to Stockholders ​ On July 30, 2025, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of September 30, 2025, payable on or about October 15, 2025. ​

Results of Operations and Financial Condition On August 4, 2025, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended June 30, 2025. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability o…

Changes in Registrant’s Certifying Accountant On June 3, 2025, Primoris Services Corporation, (the "Company") was notified that Moss Adams LLP ("Moss Adams"), the Company's independent registered public accounting firm, merged with Baker Tilly US, LLP effective on June 3, 2025. The combined audit practices operate as Baker Tilly US, LLP (“Baker Tilly”). In connection with the notification of the merger, Moss Adams has resigned as the auditors of the Company and the Audit Committee of the Comp…

Other Events ​ Declaration of Cash Dividend to Stockholders ​ On April 30, 2025, the Company’s Board of Directors declared a cash dividend of $0.08 per share of common stock for stockholders of record as of June 30, 2025, payable on or about July 15, 2025. ​ Share Purchase Program ​ On April 30, 2025, the Company’s Board of Directors authorized a share purchase program under which Primoris may, from time to time and depending on market conditions, share price and other factors, acquire shares…

Results of Operations and Financial Condition On May 5, 2025, Primoris Services Corporation, a Delaware corporation (“Primoris”, the “Company”) issued a press release announcing its financial performance for the quarter ended March 31, 2025. ​ The information contained in the press release attached hereto is being furnished and shall not be deemed filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of…

Director: The filing discloses routine board committee appointments and the selection of a Lead Independent Director, which are standard governance actions rather than executive departures.