Executive Vice President — William E. Jensen: The executive provided advance notice of retirement, indicating an orderly transition rather than a sudden departure.

Results of Operations and Financial Condition On August 5, 2026 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended June 30, 2026. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for pur…

Entry into a Material Definitive Agreement. 6.625% Senior Notes due 2033 On July 2, 2026 (the “Closing Date”), Tutor Perini Corporation (the “Company”) completed the previously announced offering and sale of $400 million in aggregate principal amount of 6.625% Senior Notes due 2033 (the “Notes”) at an offering price of 100.000% (the “Notes Offering”). The Company is using the net proceeds from this offering, together with cash on hand, to redeem $400 million aggregate principal amount of the…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant . The information set forth under

herein is not deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), is not subject to the liabilities of that section and, unless otherwise expressly specified therein, is not deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act. Note Regarding Forward-Looking Statements The statements contained in this Current Report on Form 8-K that are not purely historical are forward-l…

The filing describes a new deferred compensation plan for certain employees, not a management change.

Results of Operations and Financial Condition On May 6, 2026 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for purpo…

Results of Operations and Financial Condition On February 26, 2026 Tutor Perini Corporation issued a press release announcing its financial results for the quarter and year ended December 31, 2025. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, i…

Regulation FD Disclosure. On November 18, 2025, Tutor Perini Corporation (the “Company”) issued a press release announcing that the Company’s Board of Directors has declared a quarterly cash dividend of $0.06 per share payable on December 23, 2025, to all shareholders of record at the close of business on December 9, 2025, and authorized a $200 million share repurchase program. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The informa…

Results of Operations and Financial Condition On November 5, 2025 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended September 30, 2025. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including…

Results of Operations and Financial Condition On August 6, 2025 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended June 30, 2025. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for pur…

Executive Vice President, Building and Specialty Contractors Groups — Ghassan M. Ariqat: The agreement provides additional long-term equity incentive awards.

The filing describes an amendment and restatement of the company's incentive plan, not a management change.

Results of Operations and Financial Condition On May 7, 2025 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended March 31, 2025. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for purpo…

The company entered into separation benefits agreements with certain executives.

Results of Operations and Financial Condition On February 27, 2025 Tutor Perini Corporation issued a press release announcing its financial results for the quarter and year ended December 31, 2024. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, i…

Other Events. On January 21, 2025, Tutor Perini Corporation (the “Company”) issued a press release announcing that it has pre-paid an additional $75 million of its Term Loan B debt. The debt repayment represents a voluntary, early paydown of the Company’s Term Loan B debt. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Chief Executive Officer (CEO) — Gary G. Smalley: Gary G. Smalley was promoted from President to Chief Executive Officer.

Other Events. On November 20, 2024, Tutor Perini Corporation (the “Company”) issued a press release announcing that it has pre-paid an additional $100 million of its Term Loan B debt. The debt repayment represents a voluntary, early paydown of the Company’s Term Loan B debt. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Results of Operations and Financial Condition On November 6, 2024 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended September 30, 2024. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including…

Results of Operations and Financial Condition. On October 21, 2024, Tutor Perini Corporation (the “Company”) issued a press release providing an update on various Company matters, including the settlement of various project-related disputes, an update on cash collections, expected operating cash flow for the fourth quarter and full year of 2024, its plan to prepay a portion of its Term Loan B debt in the fourth quarter of 2024 and first quarter of 2025, as well as significant new award activi…

Results of Operations and Financial Condition On August 1, 2024 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended June 30, 2024. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for pur…

Executive Vice President, Civil Group — Michael F. Smithson: Mr. Smithson departed from the Company and entered into a Separation Agreement.

Executive Vice President, Civil Group — Michael F. Smithson: Mr. Smithson left the Company effective June 21, 2024.

Results of Operations and Financial Condition On April 25, 2024 Tutor Perini Corporation issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of that press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, is being furnished to the Securities and Exchange Commission and shall not be deemed “filed” for any purpose, including for pu…