NOTE 1. DESCRIPTION OF THE PLAN

The following description of the Eagle Materials Inc. Retirement Plan (the Plan) provides only general information. Participants should refer to the Plan document for a more complete description of the Plan’s provisions.

General

The Plan, established April 1, 1994 and amended and restated effective January 1, 2026, is a defined contribution retirement plan covering eligible employees of Eagle Materials Inc. (the Company or Employer) and eligible employees of other related corporations which adopt the Plan with the Company’s consent. The Company and certain subsidiaries collectively comprise the “Participating Employers.” The Plan is administered by the Administrative Committee (the Committee) appointed by the Board of Directors of the Company. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (ERISA).

Acquisition of Subsidiaries

During August 2024, the Company purchased the Big Bend Quarry (BBQ). Employees of BBQ were eligible to participate in the Plan as employees of Battletown Materials LLC, at the date of acquisition. During January 2025, the Company purchased Bullskin Stone & Lime (Bullskin). Employees of Bullskin were eligible to participate in the Plan at the date of acquisition.

Eligibility

The Plan has three distinct types of eligible employees: (1) employees eligible to participate in the employer profit sharing contributions, (2) employees eligible to participate in employer matching contributions or (3) employees not eligible to participate in any employer contribution. Eligible employees may not participate in both employer profit sharing and matching contributions, except as provided in the Plan document. Eligible employees of the Participating Employers participate in profit sharing contributions on the earlier of January 1 or July 1 after completing one year of service, as defined. One year of service, for purposes of eligibility, is defined as a consecutive twelve month period during which the employee worked 1,000 hours, ending on the first anniversary of the employee’s date of hire. Hourly employees of Republic Paperboard Company, LLC, a subsidiary of the Company, may participate in matching contributions on the date the employee first performs an hour of service for the Employer, as defined. Hourly employees of Audubon Materials, Tulsa Cement Company, Illinois Cement Company, Fairborn Cement Company, Kosmos Cement Company, Battletown Materials LLC, Nevada Cement Company,Kansas City Readymix, Audubon Readymix, and Bullskin Stone & Lime may also participate in matching contributions during the calendar year. Eligible employees are automatically enrolled in the Plan upon eligibility unless they opt out of the plan.

A member of a group or class of employees covered by a collective bargaining agreement is not eligible to participate in the Plan unless such agreement extends the Plan to such group or class of employees.

NOTE 2. SIGNIFICANT ACCOUNTING POLICIES

Distributions to participants are recorded when paid.

NOTE 3. NAV PER SHARE

NOTE 4. GUARANTEED INVESTMENT CONTRACT

At December 31, 2025, the Plan holds an investment in the New York Life Anchor Account, which is a Guaranteed Investment Contract (GIC). New York Life maintains the contributions in a separate account. The account is credited with earnings on the underlying investments and charged for participant withdrawals and administrative expenses. The contract is included in the financial statements at contract value as reported by New York Life. The issuer of the GIC is contractually obligated to repay the principal and a specified interest rate that is guaranteed to the Plan.

The GIC is fully benefit-responsive and contract value is the relevant measurement attribute for that portion of the net assets available for benefits attributable to the GIC. Contract value, as reported to the Plan by New York Life, represents contributions made under the contract, plus earnings, less participant withdrawals, and administrative expenses. Participants may ordinarily direct the withdrawal or transfer of all or a portion of their investment at contract value.

There are generally no events that limit the availability of the Plan to transact at the contract value paid within 90 days or in rare circumstances, contract value paid over time. There are no events that allow the issuer to terminate the contract and which require the Plan administrator to settle at an amount different than contract value paid either within 90 days or over time.

NOTE 5. INCOME TAX STATUS

On April 28, 2015, the Plan received an updated determination letter from the IRS stating that the Plan is qualified under Section 401(a) of the Code reaffirming that the related trust is exempt from taxation. Once qualified, the Plan is required to operate in conformity with the Code to maintain its qualification.

Accounting principles generally accepted in the United States of America require Plan management to evaluate tax positions taken by the Plan and recognize a tax liability if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the Internal Revenue Service. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress.

NOTE 6. RELATED PARTY TRANSACTIONS AND PARTY-IN-INTEREST TRANSACTIONS

Certain Plan investments are shares of mutual funds managed by the Trustee and, therefore, these transactions qualify as party-in-interest transactions. Fees incurred by the Plan for the investment management services are included as a reduction of the return earned on each fund.

The Plan invests in common stock of Eagle Materials Inc. (Eagle Common Stock). During the years ended December 31, 2025 and 2024, the Plan purchased and sold shares of Eagle Common Stock for approximately $474,000 and $575,000, respectively. The stock held in the Plan experienced net loss of approximately $2,076,000 in 2025. At December 31, 2025 and 2024, the Plan held 54,713 and 55,233 shares respectively of the parent company’s common stock, with a cost basis of $3,502,131 and $2,976,800, respectively.

NOTE 7. RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500

NOTE 8. RISKS AND UNCERTAINTIES

Plan assets are invested in funds and securities as directed by Plan participants. These investment securities, in general, are exposed to various risks, such as interest rate, credit, and overall market volatility. Accordingly, it is reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the Statements of Net Assets Available for Benefits.

NOTE 9. SUBSEQUENT EVENTS

Subsequent events have been evaluated through the date the financial statements were issued and all necessary disclosures have been included.

EAGLE MATERIALS INC. RETIREMENT PLAN

schedule h; line 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR)

EIN#: 75-2520779

PLAN #: 001

DECEMBER 31, 2025

*Party-in-interest.

**Cost omitted for participant directed investments