Exhibit 99.1 System1 Announces First Quarter 2024 Financial Results All Key Financial Results Above the High-End of Guidance Range • Revenue Decreased $11.2 Million Over Prior Quarter to $84.9 Million • Gross Profit Decreased 25% Over Prior Quarter to $18.6 Million • Adjusted Gross Profit Decreased 17% Over Prior Quarter to $31.2 Million • GAAP Net Loss Decreased 46% Over Prior Quarter to $14 Million • Adjusted EBITDA Decreased $9.6 million Over Prior Quarter to $0.4 Million • Company Provides Second Quarte ...