LEGAL DISCLAIMERS Forward-LookingInformation This presentation includes “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Alta’s actual results may differ from their expectations, estimates and projections and consequently, you should not rely on these forward-looking statements as predictions of future events. Words such as “expect,” “estimate,” “project,” “budget,” “forecast,” “anticipate,” “intend,” “plan,” “may,” “will,” “could,” “should,” “believes,” “predicts,” “potential,” “continue,” and similar expressions are intended to identify such forward-looking statements. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially from the expected results. Most of these factors are outside Alta’s control and are difficult to predict. Factors that may cause such differences include, but are not limited to: the impact of the COVID-19 outbreak or future epidemics on our business; federal, state, and local budget uncertainty, especially as it relates to infrastructure projects; the performance and financial viability of key suppliers, contractors, customers, and financing sources; economic, industry, business and political conditions including their effects on governmental policy and government actions that disrupt our supply chain or sales channels; our success in identifying acquisition targets and integrating acquisitions; our success in expanding into and doing business in additional markets; our ability to raise capital at favorable terms; the competitive environment for our products and services; our ability to continue to innovate and develop new business lines; our ability to attract and retain key personnel, including, but not limited to, skilled technicians; our ability to maintain our listing on The New York Stock Exchange; the impact of cyber or other security threats or other disruptions to our businesses; our ability to realize the anticipated benefits of acquisitions or divestitures, rental fleet investments or internal reorganizations; and other risks and uncertainties identified in this presentation or indicated from time to time in the section entitled “Risk Factors” in Alta’s annual report on Form 10-K and other filings with the U.S. Securities and Exchange Commission (the “SEC”). Alta cautions that the foregoing list of factors is not exclusive and readers should not place undue reliance upon any forward-looking statements, which speak only as of the date made. Alta does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any changein its expectations or any change in events, conditions or circumstances on which any such statement is based. Non-GAAP Financial Measures This presentation includes non-GAAP financial measures, including Adjusted EBITDA, Economic EBIT, organic revenue, and various free cash flow metrics. Alta believes that these non- GAAP measures are useful to investors for two principal reasons. First, Alta believes these measures may assist investors in comparing performance over various reporting periods on a consistent basis by removing from operating results the impact of items that do not reflect core operating performance. Second, these measures are used by Alta’s management to assess its performance and may (subject to the limitations described below) enable investors to compare the performance of Alta to its competition. Alta believes that the use of these non-GAAP financial measures provides an additional tool for investors to use in evaluating ongoing operating results and trends. These non-GAAP measures should not be considered in isolation from, or as an alternative to, financial measures determined in accordance with GAAP. Other companies may calculate Adjusted EBITDA, Economic EBIT, organic revenue, and free cash flow and other non-GAAP financial measures differently, and therefore Alta’s non-GAAP financial measures may not be directly comparable to similarly titled measures of other companies. With regard to our historical financial information, you can find the reconciliation of these non-GAAP financial measures to the most directly comparable GAAP measures in the Appendices at the end of this presentation. Alta is not providing a quantitative reconciliation of Non-GAAP Adjusted EBITDA guidance because certain financial information, the probable significance of which cannot be determined, is not available and cannot be reasonably estimated without unreasonable effort and expense. Specifically, Alta does not provide a reconciliation of forward-looking Non-GAAPAdjusted EBITDA to GAAP net income, due to the inherent difficulty in forecasting and quantifying certain items that are necessary for such reconciliation. Certain deductions for non-GAAP exclusions used to calculate projected GAAP net income may vary significantly based on actual events (including variations in acquired intangible asset amortization and stock compensation expense) and Alta is not able to forecast on a GAAP basis with reasonable certainty all deductions needed in order to provide a GAAP calculation of projected net income at this time. The amounts of these deductions may be material and, therefore, could result in projected GAAP net income being materially less than is indicated by projected Non-GAAP Adjusted EBITDA. Information in this presentation is not an offer to sell securities or the solicitation of an offer to buy securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction.