Landstar System (LSTR) 10-Q2022 Q3 Quarterly report

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Landstar System, Inc. (the “Company”) on Form 10-Q for the period ending September 24, 2022, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, James B. Gattoni, President and Chief Executive Officer of the Company, certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

Date: October 28, 2022