Included below are selected significant accounting policies including those that were added or modified during the six months ended June 30, 2026 as a result of new transactions entered into or the adoption of new accounting policies. Refer to

Note 3—Summary of Significant Accounting Policies

in the Annual Report for the full list of our significant accounting policies.

The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the accompanying condensed consolidated financial statements and these notes.

Actual results could differ from those estimates and may result in material effects on our operating results and financial position. Estimates made in preparing the accompanying condensed consolidated financial statements primarily include, but are not limited to, those related to revenue recognition, goodwill and long-lived asset valuations, impairment assessments, stock-based compensation awards, and estimates related to the tax receivable agreement.

Materials inventory generally consists of raw materials for use on new construction projects and is stated at the lower of cost and net realizable value, with cost determined using the specific identification method. We periodically assess materials inventory for obsolescence and recoverability and record write-downs to net realizable value based on assumptions about future demand, market conditions, plans for disposal, and physical condition of the materials.

After the completion of the IPO, we became subject to U.S. federal, state, and local income taxes with respect to our allocable share of taxable income of Holdings assessed at the prevailing corporate tax rates. Holdings operates as a limited liability company and is treated as a partnership for income tax purposes. Accordingly, Holdings incurs no significant liability for federal or state income taxes since the taxable income or loss is passed through to its members. Holdings incurs liabilities for certain state taxes paid directly by it, which are not significant and for which the expense is included in the provision for income taxes in the accompanying condensed consolidated statements of operations for the three and six months ended June 30, 2026 and 2025.

We use the liability method to account for income taxes in accordance with

ASC 740—Income Taxes

. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences of differences between the financial reporting and tax bases of assets and liabilities. Deferred tax amounts are calculated using the enacted tax rates expected to be in effect when the temporary differences reverse. Deferred tax assets are recorded when it is considered more likely than not that they will be realized. We evaluate the need for a valuation allowance by considering all available evidence, including projections of future taxable income, the timing of temporary difference reversals, the existence of tax planning strategies and historical operating results.

We recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authority, based on the technical merits of the position. As of June 30, 2026 and December 31, 2025, there were no known items that would require an accrual for uncertain tax positions.

In connection with the IPO, we entered into a Tax Receivable Agreement (“TRA”) with Holdings and the Continuing Equity Owners whereby we agreed to pay to such Continuing Equity Owners 85% of the benefits that we realize, or are deemed to realize, as a result of our allocable share of existing tax basis acquired in the IPO, increases in our share of existing tax basis and adjustments to the tax basis of the assets of Holdings as a result of sales or exchanges of common units, and certain other tax benefits related to entering into the TRA.

In addition to tax expenses, we will also make payments under the TRA, which are expected to be significant. We will account for the income tax effects and corresponding TRA’s effects resulting from future taxable purchases or redemptions of LLC Interests of the Continuing Equity Owners by recognizing an increase in deferred tax assets, based on enacted tax rates at the date of the purchase or redemption. Further, we will evaluate the likelihood that we will realize the benefit represented by the deferred tax asset and, to the extent that we estimate that it is more likely than not that we will not realize the benefit, we will reduce the carrying amount of the deferred tax asset with a valuation allowance. The amounts to be recorded for both the deferred tax

assets and the liability for obligations under the TRA will be estimated at the time of any purchase or redemption as an adjustment to stockholders’ equity, and the effects of changes in any estimates after this date will be included in net income. Similarly, the effect of subsequent changes in the enacted tax rates will be included in net income. Judgment is required in assessing the future tax consequences of events that have been recognized in our financial statements. A change in our assessment of such consequences, such as realization of deferred tax assets, changes in tax laws or interpretations thereof could materially impact results.

We recognize obligations arising under the TRA in accordance with ASC 450—

Contingencies

. Obligations under the TRA are accrued when it is probable that a liability has been incurred and its amount is estimable. Liabilities associated with the TRA are classified as either current or noncurrent based on the expected date of payment and are presented in the condensed consolidated balance sheets. The exchange of partnership interest will result in an increase in TRA liabilities with a corresponding adjustment to Additional

paid-in

capital. Subsequent remeasurement of the TRA liabilities is recognized in the condensed consolidated statement of operations. See Note 8 —

Income Taxes and Tax Receivable Agreement

for additional information.

We account for stock-based compensation in accordance with ASC 718, Compensation – Stock Compensation (“ASC 718”). Stock-based awards, including stock options. restricted stock awards. and restricted stock units are measured at their grant-date fair value and recognized as

non-cash

compensation expense on a straight-line basis over the requisite service period, which generally corresponds to the vesting period of the award. The grant date fair value of restricted stock awards and restricted stock units are determined based on our Class A common stock closing price on the grant date. The grant date fair value of stock options are determined on each grant date using the Black-Scholes option pricing model, which requires us to make certain assumptions with respect to selected model inputs, such as: (i) the risk-free interest rate, (ii) the expected volatility of our Class A common stock, (iii) the expected dividend yield, and (iv) the expected term. Forfeitures are accounted for as they occur.

For periods prior to the IPO, the grant date fair value of the Restricted Class C Units was determined on each grant date using the Black-Scholes option-pricing model, which required us to make certain assumptions with respect to selected model inputs, such as: (i) the risk-free interest rate, (ii) the expected volatility of the price of the Restricted Class C Units, (iii) the expected dividend yield, and (iv) the expected time to liquidity.

Prior to the IPO, the fair value of the Restricted Unit Appreciation (“RUA”) Plan awards was measured based on the fair value of Class A units of SOLV Energy Parent Holdings LP, which was estimated using generally accepted equity valuation and allocation methods. Subsequent to the IPO, the fair value of RUA awards is derived from the fair market value of our Class A common stock on the settlement date and is therefore a Level 1 measurement. The change in fair value at each reporting end will be recognized in the condensed consolidated statement of operations.

Basic earnings per share is computed by dividing net income (loss) attributable to SOLV Energy, Inc. by the weighted average number of shares of Class A common stock outstanding during the period. Diluted earnings (loss) per share is computed by giving effect to all potential shares, including LLC Interests (which may be held indirectly through SOLV Energy Management Holdings LP), stock-options, restricted stock awards, and restricted stock unit awards, to the extent dilutive. We use the

“if-converted”

method to determine the potential dilutive effects of the vested LLC Interests and the treasury stock method to determine the potential dilutive effects of the unvested LLC Interests and the vesting of the outstanding equity awards. Both methods are used as if the common units and outstanding equity awards were converted into our Class A common stock as of the IPO date.

In November 2024, the FASB issued ASU

2024-03,

“

Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic

220-40):

Disaggregation of Income Statement Expenses

.” The update requires entities to tabularly disclose in the footnotes to the financial statements, the amounts of purchased inventory, employee compensation, depreciation, and intangible asset amortization included in each relevant expense caption. The standard also requires disclosure of the amount and a qualitative description of other items remaining in relevant expense captions that are not separately disaggregated. This update is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption and both prospective and retrospective application are permitted. We are currently assessing the effect of this update.

In September 2025, the FASB issued ASU

2025-06,

“

Intangibles-Goodwill and

Other-Internal-Use

Software (Subtopic

350-40):

Targeted Improvements to the Accounting for

Internal-Use

Software

”, which amends the guidance on

internal-use

software. The ASU removed all references to prescriptive and sequential software development stages (referred to as “project stages”) throughout Subtopic

350-40.

Instead an entity is required to start capitalizing software costs when 1) management has authorized and committed to funding the software project and 2) it is probable that the project will be completed, and the software will be used to perform the function intended (referred to as the

“probable-to-complete

recognition threshold”). Among other things, the ASU also specified that disclosures are required for all capitalized

internal-use

software costs, regardless of how these costs are presented in the financial statements. The ASU is effective for annual reporting periods beginning after December 15, 2027 and interim reporting periods within those annual reporting periods. Early adoption is permitted. We are currently assessing the effect of this update.