Definitive Healthcare Corp.

EBITDA, Adjusted EBITDA and Adjusted EBITDA Margin

We define EBITDA as earnings before debt-related costs, including interest expense (income), net, and loss on partial extinguishment of debt, income taxes and depreciation and amortization. Adjusted EBITDA is defined as EBITDA adjusted to exclude certain items of a significant or unusual nature, including other income, net, equity-based compensation, transaction, integration, and restructuring expenses, goodwill impairments and other non-core expenses. Adjusted EBITDA Margin is defined as Adjusted EBITDA as a percentage of revenue. Adjusted EBITDA and Adjusted EBITDA Margin are key metrics used by management and our board of directors to assess the profitability of our operations. We believe that Adjusted EBITDA and Adjusted EBITDA Margin provide useful information to help investors to assess our operating performance because these metrics eliminate non-core and unusual items and non-cash expenses, which we do not consider indicative of ongoing operational performance. We believe that these metrics are helpful to investors in measuring the profitability of our operations on a consolidated level.