LANDSTAR SYSTEM INC 10-Q

Item 5. Other Information None. Item 6. Exhibits The exhibits listed on the Exhibit Index are furnished as part of this quarterly report on Form 10-Q. 28 EXHIBIT INDEX Registrant’s Commission File No.: 0-21238 Exhibit No. Description (31) Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.1* Chief Executive Officer and principal financial officer certification, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. (32) Certifications Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 32.1** Chief Executive Officer and principal financial officer certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 101.INS* Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. 101.SCH* Inline XBRL Taxonomy Extension Schema Document 101.CAL* Inline XBRL Taxonomy Extension Calculation Linkbase Document 101.DEF* Inline XBRL Taxonomy Extension Definition Linkbase Document 101.LAB* Inline XBRL Taxonomy Extension Label Linkbase Document 101.PRE* Inline XBRL Taxonomy Extension Presentation Linkbase Document 104* Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) * Filed herewith ** Furnished herewith 29 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. LANDSTAR SYSTEM, INC. Date: April 30, 2021 /s/ James B. Gattoni James B. Gattoni President and Chief Executive Officer; Principal Executive Officer; Principal Financial Officer; Director Date: April 30, 2021 /s/ James P. Todd James P. Todd Vice President and Corporate Controller of Landstar Systems Holding, Inc.; Principal Accounting Officer 30