TransMedics Group, Inc.

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our President and Chief Executive Officer and our Chief Financial Officer (our principal executive officer and principal financial and accounting officer, respectively), evaluated the effectiveness of our disclosure controls and procedures as of June 30, 2025. The term “disclosure controls and procedures,” as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that 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 the company’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Based on the evaluation of our disclosure controls and procedures as of June 30, 2025, our President and Chief Executive Officer and our Chief Financial Officer concluded that, as of such date, our disclosure controls and procedures were not effective due to a material weakness in internal control over financial reporting. Specifically, the Company has not designed and maintained effective controls over inventory movement within its manufacturing network. While effective controls are in place to verify the existence and accuracy of inventory as of year-end, effective controls have not been designed and maintained to verify that inventory movements are appropriately recorded in the interim financial statements. Notwithstanding the material weakness, and based on the additional analyses and other procedures management performed, we have concluded that our condensed consolidated financial statements included in this Quarterly Report on Form 10-Q present fairly, in all material respects, our financial position and results of operations and cash flows as of each of the dates, and for each of the periods, presented therein in accordance with generally accepted accounting principles in the United States of America.

Remediation Plan

We and our board of directors are committed to maintaining a strong internal control environment. Management, with the oversight of the audit committee of our board of directors, is in the process of assessing and finalizing its plan for remediation for the material weakness described above. We intend to remediate this material weakness as soon as possible, and we have begun assessing our design of internal controls to ensure the movement of inventory is timely and accurately recorded throughout the course of the year. The material weakness will not be considered remediated until the applicable controls have been in place and have operated for a sufficient period of time, and management has concluded, through testing, that the controls are operating effectively.

Changes in Internal Control over Financial Reporting

No change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the three months ended June 30, 2025 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II—OTHER INFORMATION