Basis of Presentation

The accompanying financial statements have been prepared on the accrual basis of accounting, in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP).

Contributions and Contributions Receivable

The contributions are recorded on the accrual method of accounting. Contributions receivable are obligations arising from amounts owed to the Plan from the Employer that have not been included in the Plan's investments at year end.

Investment Valuation and Income Recognition

All of the Plan’s investments are included in a trust, and are governed by a trust agreement with the Trustee which is held accountable by and reports to the Committee.

Investments, except for the guaranteed investment contract, which is stated at contract value, are stated at fair value. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Plan presents the net change in fair value of common stock, mutual funds and collective trusts, which consists of realized gains or losses, unrealized appreciation (depreciation), and any income or capital gain distributions from such investments, in the accompanying statement of changes in net assets available for benefits.

Under the Fair Value Measurements and Disclosures topic of the Codification, ASC 820, disclosures are required about how fair value is determined for assets and liabilities and a hierarchy for which these assets and liabilities must be grouped is established, based on significant levels of inputs as follows:

Level 1 - Quoted prices in active markets for identical assets or liabilities.

Level 2 - Inputs other than quoted prices included in level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

NOTE 2. SIGNIFICANT ACCOUNTING POLICIES (continued)

Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. The following is a description of the valuation methodologies

used for instruments measured at fair value, including the general classification of such instruments pursuant to the valuation hierarchy.

Common Stock

Common stock is valued at the closing price reported on the New York Stock Exchange Composite Listing and is classified within level 1 of the valuation hierarchy.

Mutual Funds

These investments are public investment vehicles valued using the Net Asset Value (“NAV”) provided by the administrator of the fund. The NAV is based on the value of the underlying assets owned by the fund, minus its liabilities, and then divided by the number of shares outstanding. The NAV is a quoted price in an active market.

All security transactions are recorded on the trade date. Gains and losses on the disposal of investments are determined based on the average cost of all securities. Dividend income is recorded on the effective date of a declared dividend. Income from other investments is recorded as earned on an accrual basis.

Administrative expenses for the year ended December 31, 2025 include Trustee and record keeper fees. Fund management fees and administrative fees are charged directly to the Plan.

Self-Directed Brokerage Accounts

Self-directed brokerage accounts include investments in various securities, primarily stocks, bonds, mutual funds and cash and cash equivalents. These investments are valued using quoted prices in active markets.

Collective Trusts

The Plan holds investments in collective trusts which are managed by the fund manager which invest in various underlying investments, including equity securities, fixed income investments, and multi-asset class funds. The fair value of the units of these investments is valued at NAV per unit, as determined by the fund manager. The NAV is used as the practical expedient to estimate fair value. The Collective trusts are direct filing entities.

NOTE 2. SIGNIFICANT ACCOUNTING POLICIES (continued)

Contributions

The Plan permits participants to contribute pre-tax up to 70% of their compensation, up to a statutory limit, as defined, to a 401(k) account upon the date of hire. Participants may contribute a portion of their compensation, as defined by the Plan, limited to the maximum amount permitted under the

NOTE 1. DESCRIPTION OF THE PLAN (continued)

applicable Internal Revenue Code (the Code) regulations and the Plan document. Participants may also contribute amounts representing distributions from other qualified defined benefit and defined contribution plans.

Participants who have been auto-enrolled in the Plan will be deemed to have elected to contribute 3% to the Plan, with a 1% automatic increase annually up to a maximum of 7%. An Automatic Enrollment Participant who elects not to make Automatic Contributions or elects to cease such contributions to the Plan may elect to defer a percentage of their Compensation as Pre‑Tax Contributions, Roth Contributions, and/or After-Tax Contributions at any time.

Profit sharing contributions are made by the Participating Employers as determined by the Company’s Board of Directors. Profit sharing contributions are made to all eligible participants employed on December 31 of each year. The profit sharing contributions are classified as employer's contribution receivable on the Statements of Net Assets Available for Benefits, and are generally paid in February of the next year. Profit sharing contributions made to hourly employees are allocated to participant accounts on a pro rata basis determined by each participant’s number of hours worked. Eligible employees of certain subsidiaries receive Employer nondiscretionary matching contributions. These matching contributions are generally allocated to each employee’s participant account based on a certain percentage of each employee’s eligible contribution, up to a certain percentage or dollar amount annually, as defined by the Plan. Participating Employers, at their sole discretion, may make qualified non-elective contributions to the Plan. No such qualified non-elective contributions were made for the 2025 or 2024 Plan year. Forfeitures may be used to reduce employer contributions or administrative expenses of the Plan. Accrued discretionary employer profit sharing contributions to the Plan were reduced by assumed forfeitures of $300,000 at December 31, 2025, and December 31, 2024. Forfeitures available for future use totaled approximately $447,000 and $370,000 at December 31, 2025 and 2024, respectively.

Participants direct the investment of their accounts into various mutual funds, collective trusts, a guaranteed investment contract, self-directed brokerage account, or the Eagle Materials Common Stock Fund (EXPSF). The EXPSF is a unitized stock fund.

Participants may allocate up to 15% of employer and participant contributions to the EXPSF, whereas up to 100% may be allocated to any other investment option offered by the Plan.

Notes Receivable from Participants

Notes receivable from participants represent loans that are recorded at their unpaid principal balance plus any accrued but unpaid interest. Plan participants may borrow from their accounts an amount generally not to exceed the lesser of $50,000 or 50% of their vested account balance. The repayment terms of loans may not exceed five years except for loans used to acquire a principal residence. Each loan bears interest at a reasonable rate based on lending in similar situations. The current interest rate for new loans is set at the Wall Street Journal prime rate plus two percent. Principal and interest are paid ratably through automatic payroll deductions. If a participant ceases to make loan repayments and the Plan administrator deems the loan to be a distribution, notes receivable from participants is reduced and a benefit payment is recorded.