ORION PLANT SERVICES, INC.

h participant may contribute between 1 % and 80 % of eligible compensation on a pre-tax basis, Roth after-tax or a combination of pre-tax and Roth, up to the annual IRS limit. The Company matches 100 % on the first 3 % of eligible compensation contributed to the Plan and 50 % on the next 2 % of eligible compensation contributed to the Plan. Participants’ contributions are fully vested at all times. Because the Plan is a safe harbor plan, the money Orion contributes to employees’ accounts in the form of a match, and any related earnings become theirs immediately upon receipt. At its discretion, the Company may make additional matching and profit-sharing contributions. During the years ended December 31, 2025, 2024 and 2023 the Company contributed $ 2.7 million, $ 2.9 million and $ 2.7 milli

100 % on the first 3 % of eligible compensation contributed to the Plan and 50 % on the next 2 % of eligible compensation contributed to the Plan. Participants’ contributions are fully vested at all times. Because the Plan is a safe harbor plan, the money Orion contributes to employees’ accounts in the form of a match, and any related earnings become theirs immediately upon receipt. At its discretion, the Company may make additional matching and profit-sharing contributions. During the years ended December 31, 2025, 2024 and 2023 the Company contributed $ 2.7 million, $ 2.9 million and $ 2.7 million, respectively, in matching contributions. The Company contributes to several multi-employer defined pension plans under the terms of collective-bargaining agreements that cover its union-repre

in thousands) Contract revenues ​ $ 852,260 $ 796,394 ​ $ 711,778 Cost of contract revenues ​ 746,646 705,234 ​ 650,115 Gross profit ​ 105,614 91,160 ​ 61,663 Selling, general and administrative expenses ​ 93,471 82,537 ​ 69,431 Amortization of intangible assets ​ ​ — ​ ​ — ​ ​ 427 Gain on disposal of assets, net ​ ​ (2,468) ​ ​ (2,898) ​ ​ (8,455) Intangible asset impairment loss ​ — — ​ 6,890 Operating income from operations ​ 14,611 11,521 ​ (6,630) Other (expense) income: ​ ​ ​ ​ ​ Interest expense ​ (8,863) (13,381) ​ (11,659) Loss on extinguishment of debt ​ ​ (3,777) ​ ​ ​ ​ ​ ​ Other income ​ 936 564 ​ 744 Other expense, net ​ (11,704) (12,817) ​ (10,915) Income (loss) before income taxes ​ 2,907 (1,296) ​ (17,545) Income tax expense ​ 419 348 ​ 330 Net income (loss) ​ $ 2,488 $ (1

le U.S. employees who are not provided retirement benefits through a collective bargaining agreement may make contributions through payroll deductions and to which we make certain matching contributions. Ethics and Compliance All of our employees are subject to Quanta’s Code of Conduct, which addresses compliance with applicable laws and Quanta’s policies concerning, among other things, general business ethics, competition, anti-corruption and bribery, environmental protection, conflicts of interest, harassment and discrimination, data security and privacy, and insider trading. Quanta’s Code of Conduct also informs employees and third parties (such as suppliers, subcontractors and members of the public) about the resources and confidential reporting mechanisms available to detect, prevent

law. Quanta may also make discretionary employer contributions to such plan. Matching contributions vest immediately, and discretionary employer contributions may be subject to a vesting schedule determined at the time of the contribution, provided that vesting accelerates upon a change in control or the participant’s death or retirement. All matching and discretionary employer contributions, whether vested or not, are forfeited upon a participant’s termination of employment for cause or upon the participant engaging in competition with Quanta or any of its affiliates. As of December 31, 2025 and 2024, the liability related to deferred cash compensation under these plans, including amounts contributed by Quanta, was $ 126.1 million and $ 110.2 million, the majority of which was included i

2 20.1 % Gross profit 4,275,081 15.0 3,510,761 14.8 764,320 21.8 % Equity in earnings of integral unconsolidated affiliates 55,635 0.2 50,484 0.2 5,151 10.2 % Selling, general and administrative expenses (2,189,209) (7.7) (1,824,754) (7.7) (364,455) 20.0 % Amortization of intangible assets (498,795) (1.7) (382,959) (1.6) (115,836) 30.2 % Increase in fair value of contingent consideration liabilities (31,203) (0.1) (7,064) — (24,139) 341.7 % Operating income 1,611,509 5.7 1,346,468 5.7 265,041 19.7 % Interest and other financing expenses (261,445) (1.0) (202,687) (0.9) (58,758) 29.0 % Interest income 15,702 0.1 32,404 0.1 (16,702) (51.5) % Other income, net 23,739 0.1 35,845 0.2 (12,106) (33.8) % Income before income taxes 1,389,505 4.9 1,212,030 5.1 177,475 14.6 % Provision for income taxe