Amprius Technologies, Inc.

Evaluation of Disclosure Controls and Procedures

Our management, with the participation and supervision of our Chief Executive Officer (“CEO”) and our Chief Financial Officer (“CFO”), have evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this Annual Report on Form 10-K. Our disclosure controls and procedures are designed to ensure that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our CEO and our CFO, as appropriate, to allow timely decisions regarding required disclosure. Based on such evaluation, our CEO and our CFO have concluded that our disclosure controls and procedures were effective as of December 31, 2024.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rule 13a-13(f) and 15d-15(f) under the Exchange Act. Our management, with the participation of our CEO and CFO, assessed the effectiveness of our internal control over financial reporting as of December 31, 2024 based on the 2013 framework established in the “Internal Control-Integrated Framework,” issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on such assessment, management has concluded that our internal control over financial reporting was effective as of December 31, 2024.

This Annual Report on Form 10-K does not include an auditor attestation of our internal control over financial reporting pursuant to Section 404(b) of the Sarbanes-Oxley Act because of our status as an “emerging growth company.”

Remediation of Previously Identified Material Weaknesses

As of December 31, 2023, we had material weaknesses in our internal controls over financial reporting due to the inadequate controls in our implementation, use and monitoring of certain application systems that we implemented in 2023, which resulted in inadequate review of certain transactions. During the year ended December 31, 2024, our management implemented the following controls to remediate those material weaknesses:

•Enhanced our controls over the use of application systems that we implemented in 2023 by removing inappropriate level of access of our employees, periodically reviewing their access, documenting our review of their access, and ensuring that no one from the accounting and finance department could add or modify users in those application systems;

•Enhanced our controls over the recording of transactions entered into our accounting system by ensuring that they were properly reviewed and approved by the appropriate level of personnel; and

•Engaged external specialists who assisted us in enhancing, designing, reviewing, testing and monitoring our internal controls on a periodic basis.

As a result of the implementation and enhancement of the internal controls described above, management determined that our material weaknesses had been remediated and our internal control over financial reporting was effective as of December 31, 2024.

Changes in Internal Control Over Financial Reporting

Except for the enhancement of our internal controls described above to remediate the previously identified material weaknesses, we have not identified changes in our internal control over financial reporting in connection with the evaluation required by Rules 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the quarter ended December 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitation on the Effectiveness of Internal Control

Our management, including our CEO and our CFO, do not expect that our disclosure controls and procedures or our internal control over financial reporting will prevent all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people or by management override of the controls. The design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Due to inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.