Exhibit 99.1 Codexis Reports Fourth Quarter and Fiscal Year 2023 Financial Results Anticipate 2024 Product Revenue Growth of at Least 10% vs. 2023 Excluding Enzyme Sales Related to PAXLOVID™ Recently Announced Debt Financing Reinforces Strong Financial Position with Projected Runway Through Expected Positive Cash-flow Around End of 2026 2024 to Focus on Securing Early Access Customers for ECO Synthesis™ Manufacturing Platform, Launch of Double-stranded RNA Ligase and Return to Growth for Pharmaceutical Manu ...