COMPX INTERNATIONAL INC

To the Board of Directors and Stockholders of CompX International Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of CompX International Inc. and its subsidiaries (the “Company”) as of December 31, 2023 and January 1, 2023, and the related consolidated statements of income and comprehensive income, of stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2023, including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and January 1, 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Goodwill Impairment Assessment – Security Products Reporting Unit

As described in Note 6 to the consolidated financial statements, the Company’s consolidated goodwill balance was $23.7 million as of December 31, 2023, all of which related to the Company’s Security Products reporting unit, which corresponds to its Security Products operating segment. As disclosed by management, management performs an annual goodwill impairment test in the third quarter of each year, or at other times whenever an event occurs or circumstances change that would more-likely-than-not reduce the fair value of a reporting unit below its carrying value. Management

first assesses qualitative factors to determine whether it is more likely than not the fair value of the Security Products reporting unit is less than its carrying value. When performing a qualitative assessment, considerable management judgment is necessary to evaluate the qualitative impact of events and circumstances on the fair value of a reporting unit. Events and circumstances considered in management’s impairment evaluations include historical profits and stability of the markets served. In 2023, management used the qualitative assessment for the annual impairment test and determined it was not necessary to perform the quantitative goodwill impairment test, as management concluded it was more likely than not the fair value of the Security Products reporting unit exceeded its carrying amount.

The principal considerations for our determination that performing procedures relating to the goodwill impairment assessment of the Security Products reporting unit is a critical audit matter are (i) the significant judgment by management when performing the qualitative impairment assessment and (ii) the high degree of auditor judgment and subjectivity in performing procedures and evaluating evidence relating to management’s qualitative impairment assessment.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management’s goodwill impairment assessment and the review of qualitative factors affecting the Security Products reporting unit. These procedures also included, among others, (i) evaluating management’s qualitative impairment assessment by analyzing financial performance of the Security Products reporting unit, the Company’s market capitalization and other events or circumstances impacting the reporting unit and (ii) comparing actual financial performance with forecasted financial performance used in previous impairment assessments to evaluate management’s assessment of whether it is more likely than not that the fair value of each reporting unit is less than the carrying value.

/s/PricewaterhouseCoopers LLP

Dallas, Texas

February 28, 2024

We have served as the Company’s auditor since 1993.