COMPX INTERNATIONAL INC

Risk Management Program. We and Contran participate in a combined risk management program. Pursuant to the program, Contran and certain of its subsidiaries and related entities, including us and certain of our subsidiaries and related entities, as a group purchase insurance coverage and risk management services. The program apportions its costs among the participating companies.

Tall Pines is a captive insurance company wholly owned by Valhi that underwrites certain insurance policies to Contran and certain of its subsidiaries and related entities, including us. Tall Pines purchases reinsurance from highly rated (as determined by A.M. Best or other internationally recognized ratings agency) third-party insurance carriers for substantially all of the risks it underwrites. Consistent with insurance industry practices, Tall Pines receives commissions from reinsurance underwriters and/or assesses fees for certain of the policies that it underwrites. Insurance policies that are not underwritten by Tall Pines are purchased from third-party insurance carriers with an A.M. Best Company rating of generally at least an “A-” (excellent) or equivalent rating.

With respect to certain of such jointly owned insurance policies, it is possible that unusually large losses incurred by one or more insureds during a given policy period could leave the other participating companies without adequate coverage under that policy for the balance of the policy period. As a result, and in the event that the available coverage under a particular policy would become exhausted by one or more claims, Contran and certain of its subsidiaries and affiliates, including us, have entered into a loss sharing agreement under which any uninsured loss arising because the available coverage had been exhausted by one or more claims will be shared ratably by those entities that had submitted claims under the relevant policy. We believe the benefits in the form of reduced premiums and broader coverage associated with the group coverage for such policies justify the risk associated with the potential for any uninsured loss.

During 2025, we paid approximately $3.2 million under the combined risk management program. This amount principally represents premiums and fees for insurance, including approximately $0.8 million for policies underwritten

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by Tall Pines. The full amount also includes reimbursements to insurers or reinsurers of claims within our applicable deductible or retention ranges that such insurers and reinsurers paid to third parties on our behalf, as well as amounts for risk management services and various other third-party fees and expenses incurred by the program. We expect that these relationships will continue in 2026.

In November 2025, our management made a presentation to our audit committee regarding our participation in the combined risk management program. Among other things during such presentation, the committee was informed of the following (in addition to the matters described above):

As part of such presentations, our chief financial officer, after consultation with other members of our management, advised the committee of her belief that our participation in the risk management program, including the allocation of its costs among us and the other entities participating in the risk management program, is fair and reasonable to us, and is on terms no less favorable than we could otherwise obtain from unrelated parties. She then provided the committee with her recommendation that the committee reapprove, adopt and ratify our participation in the risk management program in all respects.

After considering the information contained in the presentations, including the recommendation of our chief financial officer, and following further discussion and review by the audit committee, our audit committee determined that our participation in the risk management program is fair and reasonable to us, and is on terms no less favorable than we could otherwise obtain from unrelated parties, in each case based on the collective business judgment and experience of members of the committee, and the committee reapproved, adopted and ratified our participation in the risk management program in all respects.