The term "Adjusted EBITDA" used in this release is a financial measurement not calculated in accordance with GAAP and is defined as net income attributable to MISTRAS Group, Inc. plus: interest expense, provision for income taxes, depreciation and amortization, share-based compensation expense and certain acquisition related costs (including transaction due diligence costs and adjustments to the fair value of contingent consideration), foreign exchange (gain) loss, non-cash impairment charges and, if applicable, certain additional special items which are noted.