Exhibit 99.1 Quest Resource Holding Corporation Reports Fourth Quarter and Fiscal Year 2023 Financial Results New Business Wins, Client Renewals, Revenue Growth, and Pipeline Growth Reflect Accelerated Momentum Across Business Completed Integrations of All Previously Announced Acquisitions; All Clients Onboarded Onto Quest’s Platform in 2023 Investments in Technology Enabling Efficiencies, Expansion in Vendor Network, Growth in Service Lines, and Improving Client Experience Board of Directors Retaining Fina ...