Exhibit 99.1 For Immediate Release October 28, 2025 LANDSTAR SYSTEM REPORTS THIRD QUARTER RESULTS Jacksonville, FL - Landstar System, Inc. (NASDAQ: LSTR) ("Landstar" or the "Company") today reported its financial results for the 2025 third quarter. The Company reported total revenue of $1,205 million in the 2025 third quarter, compared to$1,214 million in the 2024 third quarter. Gross profit and variable contribution each also decreased approximately 1% in the 2025 third quarter compared to the 2024 third ...