Shimmick Corp

Evaluation of Disclosure Controls and Procedures

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act). Management, under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer, has conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act). In conducting our evaluation, management used the updated framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) in Internal Control–Integrated Framework (2013). Disclosure controls and procedures are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to our management, including our principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

Based on that evaluation, management concluded that, as of July 3, 2026, our disclosure controls and procedures were not effective due to the material weaknesses in internal control over financial reporting described below.

As discussed in Item 9A of our Form 10-K, as of January 2, 2026, we identified material weaknesses in our internal control over financial reporting related to the operating effectiveness of controls associated with revenue and journal entries and the design and operating effectiveness of controls associated with income tax accounting. Specifically, we did not maintain effective internal controls over the preparation, review, and approval of journal entries to verify appropriate authorization. In addition, we did not maintain effective controls over the calculation, review and recording of income tax accounts, including the income tax provision, deferred tax assets and liabilities, and related disclosures. We also identified a deficiency in controls over the revenue review of estimates at completion, as there was insufficient evidence to support that reviews were performed for amounts exceeding established thresholds. Finally, we continue to remediate the monitoring aspect of our internal controls with respect to having an established, consistently executed plan to test all relevant control activities for operating effectiveness on a regular basis such that there is sufficient evidence that all controls are operating effectively as of year end.

Management performed additional analyses and other procedures to ensure that our condensed consolidated financial statements were prepared in accordance with U.S. GAAP. Accordingly, management believes that the condensed consolidated financial statements included in this Form 10-Q fairly present, in all material respects, our financial position, results of operations, and cash flows as of and for the periods presented in this Form 10-Q, in accordance with U.S. GAAP.

Management’s Plan to Remediate the Identified Material Weaknesses

We have implemented and are in the process of executing a remediation plan which includes consistently documenting the support related to the revenue project estimate at completion modules, timely executing a formal review process to ensure journal entries are reviewed and approved in a timely manner and enhancing the oversight and review of income tax-related accounting calculations to validate completion and accuracy.

Changes in Internal Control over Financial Reporting

With the exception of the implementation and enhancement of controls in connection with our remediation activities described above, there were no changes to our internal control over financial reporting during the quarter ended July 3, 2026 that have materially affected, or that are reasonably likely to materially affect, our internal control over financial reporting.