ABIOMED (ABMD)

Appointment for Fiscal 2007

Deloitte & Touche was engaged on November 9, 2006 as our new independent registered public accounting firm to audit our financial statements. During fiscal 2005, fiscal 2006, and the subsequent interim period through November 9, 2006, neither we nor anyone on our behalf consulted Deloitte & Touche regarding any of the matters referred to in Item 304(a)(2) of Regulation S-K. The decision to change independent registered public accounting firms was approved by our audit committee.

We and PricewaterhouseCoopers LLP, our independent registered public accounting firm before Deloitte & Touche, mutually agreed that PricewaterhouseCoopers would not continue as our independent registered public accounting firm. Accordingly, on November 9, 2006, we dismissed PricewaterhouseCoopers.

PricewaterhouseCoopers’ reports on our financial statements for fiscal 2005 and fiscal 2006 did not contain an adverse opinion or a disclaimer of opinion and was not qualified or modified as to uncertainty, audit scope or accounting principles. Moreover, during fiscal 2005, fiscal 2006, and the subsequent interim period through November 9, 2006, there were no disagreements between PricewaterhouseCoopers and us on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreement, if not resolved to the satisfaction of PricewaterhouseCoopers, would have caused it to make reference to the subject matter of the disagreement in connection with its report.

We have given each of PricewaterhouseCoopers and Deloitte & Touche an opportunity to review the foregoing disclosures, and neither believes the disclosures are incorrect or incomplete.