Landstar System, Inc. updated its first quarter 2025 earnings guidance, now expecting earnings per share between $0.90 and $0.95, down from previous estimates due to elevated insurance costs and a potential $0.35 to $0.50 impact from a supply chain fraud investigation. The company also repurchased approximately 386,000 shares for about $60 million and will release its first quarter results on April 29, 2025.