UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

May 13, 2014

Eagle Materials Inc.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number including area code: (214) 432-2000

Not Applicable

(Former name or former address if changed from last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

Information responsive to Item 5.02(e):

On May 13, 2014, the Compensation Committee of the Board of Directors of Eagle Materials Inc. (“Eagle”) approved the Eagle Materials Inc. Salaried Incentive Compensation Program for Fiscal Year 2015 (“Eagle Plan”), a copy of which is attached to this Report as Exhibit 10.1 and incorporated herein by reference. Under the terms of the Eagle Plan, a pool of 1.35% of the Company’s operating earnings for fiscal 2015 will be available to pay annual bonuses to participating officers, subject to reduction based on individual performance in fiscal 2015. The Compensation Committee also determined the applicable percentage of the bonus pool available for payment of the annual incentive bonus to the CEO and the other named executive officers participating in the Eagle Plan (Mr. Steven R. Rowley, President and Chief Executive Officer — 40%; Mr. D. Craig Kesler, Executive Vice President – Finance and Administration and Chief Financial Officer — 16%; and Mr. James H. Graass, Executive Vice President and General Counsel — 16%).

Mr. Gerald J. Essl, Executive Vice President — Cement and Concrete/Aggregates, and Mr. David B. Powers, Executive Vice President — Gypsum, participate in divisional incentive compensation programs pursuant to which a percentage of the operating earnings of the applicable subsidiary (or group of subsidiaries) is available for payment of bonuses to the participating employees. Mr. Essl participates in the Eagle Materials Inc. Cement Companies Salaried Incentive Compensation Program for Fiscal Year 2015 (a copy which is attached to this Report as Exhibit 10.2 and incorporated herein by reference) and the Eagle Materials Inc. Concrete and Aggregates Companies Salaried Incentive Compensation Program for Fiscal Year 2015 (a copy of which is attached to this Report as Exhibit 10.3 and incorporated herein by reference). In the programs in which Mr. Essl participates, the Compensation Committee approved the percentage of operating earnings of each of the Company’s cement and concrete/aggregates subsidiaries for fiscal 2015 which is available for payment of bonuses to participating employees (2.25%) and the percentage of such bonus pool available for payment to Mr. Essl at the end of fiscal 2015 (20%), subject to reduction based on individual performance. With respect to our cement joint venture, Mr. Essl is eligible to receive an amount equal to 20% of 2.25% of our half of the joint venture’s fiscal 2015 earnings, subject to reduction based on individual performance. Mr. Powers participates in the Eagle Materials Inc. American Gypsum Company Salaried Incentive Compensation Program for Fiscal Year 2015 (a copy which is attached to this Report as Exhibit 10.4 and incorporated herein by reference). In the case of Mr. Powers, the Compensation Committee approved the percentage of American Gypsum’s operating earnings available for payment of annual bonuses to participating American Gypsum employees (2.25%) and the percentage of such bonus pool available for payment to Mr. Powers at the end of fiscal 2015 (20%), subject to reduction based on individual performance.

The Compensation Committee also approved the Eagle Materials Inc. Special Situation Program for Fiscal Year 2015 (the “SSP”), a copy of which is attached to this Report as Exhibit 10.5 and incorporated herein by reference. Under the terms of the SSP, a pool of 0.35% of the Company’s operating earnings for fiscal 2015, plus any portions of bonus pools under the Eagle Plan, the divisional plans and subsidiary long-term compensation plans not paid out or earned, are available to pay annual bonuses to participating employees from the SSP.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: May 19, 2014

EXHIBIT INDEX