On December 28, 2018, AtriCure, Inc. entered into an amendment to the company’s Loan and Security Agreement with Silicon Valley Bank dated February 23, 2018. The Amendment: Amends the interest rate on the principal amount of the outstanding Term Loan Advance from the greater of the Prime Rate or 4.50%, plus 3.75% to the greater of the Prime Rate or 4.50%, plus 0.50%. Increases Term Loan Prepayment Premium amount but reduces the period in which the Term Loan Prepayment Premium would be payable to one year following the date the Company entered the Amendment. Modifies certain financial covenants from a minimum revenue test to a liquidity ratio test. Waives the unearned portion of the financing fee, or approximately 1,100,000. Increases the Revolving Line termination fees, which apply in the event the Revolving Line is terminated prior to the Maturity Date. Revises the definition of Available Amount, modifying how availability on the Revolving Line is calculated. Amends the Letter of Credit sublimit to 2,500,000.