Martin Marietta Reports Record Fourth-Quarter and Full-Year 2021 Results

Set Full-Year Records for Revenues, Profitability and Safety Performance Delivered Full-Year 2021 Adjusted EBITDA Exceeding $1.5 Billion Stronger Product Demand Experienced Enterprise-Wide; Organic Aggregates Shipments Increased 9 Percent in Fourth Quarter and 4 Percent for Full Year Accelerating