Regulation FD Disclosure. On September 1, 2026, Everus Construction Group, Inc. (the "Company") issued a press release announcing it completed the acquisition of Epsilon Industries. A copy of the press release, which the Company is furnishing to the Securities and Exchange Commission, is attached as Exhibit 99.1 and incorporated by reference herein.

Results of Operations and Financial Condition and

Results of Operations and Financial Condition and

Regulation FD Disclosure. On April 2, 2026, Everus Construction Group, Inc. (the "Company") issued a press release announcing the completion of the acquisition of SE&M Constructors, Inc., SE&M of the Triangle, Inc. and SECO Rentals, LLC. A copy of the press release, which the Company is furnishing to the Securities and Exchange Commission, is attached as Exhibit 99.1 and incorporated by reference herein.

Changes in Registrant's Certifying Accountant. Dismissal of Independent Registered Public Accounting Firm On January 14, 2026, upon the completion of a comprehensive selection process, the Audit Committee of the Board of Directors ("the Audit Committee") of the Company approved the dismissal of Deloitte as the Company's independent registered public accounting firm, effective as of immediately following Deloitte's completion of its audit of the Company's consolidated financial statements as o…

Results of Operations and Financial Condition and

Changes in Registrant's Certifying Accountant. Dismissal of Independent Registered Public Accounting Firm On January 14, 2026, upon the completion of a comprehensive selection process, the Audit Committee of the Board of Directors ("the Audit Committee") of Everus Construction Group, Inc. (“the Company”) approved the dismissal of Deloitte & Touche LLP ("Deloitte") as the Company's independent registered public accounting firm, effective as of immediately following Deloitte's completion of its…

Results of Operations and Financial Condition and

Results of Operations and Financial Condition and

Results of Operations and Financial Condition and

Results of Operations and Financial Condition and

The filing discloses the adoption of a Change in Control Severance Plan, which is a compensatory arrangement rather than an actual departure, appointment, or election of officers.

Results of Operations and Financial Condition and

Changes in Control of Registrant. The disclosure of the Distribution set forth above under Explanatory Note and under

Director: The filing describes a planned board reconstitution and officer appointments associated with a corporate separation and distribution, rather than an unexpected executive departure.

Material Modification to Rights of Security Holders. The disclosure set forth below under

Entry Into a Material Definitive Agreement. Separation-Related Agreements In connection with the Separation and in order to govern the relationship between the parties following the Separation and Distribution, on October 31, 2024, the Company entered into a Separation and Distribution Agreement, a Transition Services Agreement, a Tax Matters Agreement and an Employee Matters Agreement with MDU Resources. A summary of the material terms of such agreements can be found in the section entitled…

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

Director — David M. Sparby: The filing discloses the appointment of a new director to fill a vacancy created by a board size increase, which is a routine governance action rather than an executive departure.