MARTEN TRANSPORT LTD

For the period ended Jun 30, 2026. Filed Aug 6, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 6, 2026

MRTN$12.11+3.2%Stored close · as of Nov 9, 2026

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Contents

Item 6. Exhibits

Item No.	Item	Method of Filing
10.1	Named Executive Officer Compensation	Incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed May 11, 2026.
10.2	Third Amended and Restated Executive Officer Performance Incentive Plan	Incorporated by reference to Exhibit 10.2 of the Company’s Current Report on Form 8-K filed May 11, 2026.
10.3	First Amendment to Credit Agreement, dated as of June 12, 2026, by and among Marten Transport, Ltd., as borrower, the banks party thereto, and U.S. Bank National Association, as agent for the banks	Incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed June 18, 2026.
31.1	Certification pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, by Randolph L. Marten, the Registrant’s Chairman of the Board and Chief Executive Officer (Principal Executive Officer)	Filed with this Report.
31.2	Certification pursuant to Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, by James J. Hinnendael, the Registrant’s Executive Vice President and Chief Financial Officer (Principal Financial Officer)	Filed with this Report.
32.1	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed with this Report.
101	The following financial information from Marten Transport, Ltd.’s Quarterly Report on Form 10-Q for the period ended June 30, 2026, filed with the SEC on August 6, 2026, formatted in iXBRL, or Inline eXtensible Business Reporting Language: (i) Consolidated Condensed Balance Sheets, (ii) Consolidated Condensed Statements of Operations, (iii) Consolidated Condensed Statements of Stockholders’ Equity, (iv) Consolidated Condensed Statements of Cash Flows, and (v) Notes to Consolidated Condensed Financial Statements	Filed with this Report.
104	The cover page from Marten Transport, Ltd.’s Quarterly Report on Form 10-Q for the period ended June 30, 2026, formatted in iXBRL, included in Exhibit 101	Filed with this Report.

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.

	MARTEN TRANSPORT, LTD.
Dated: August 6, 2026	By:	/s/ Randolph L. Marten
		Randolph L. Marten
		Chairman of the Board and Chief Executive Officer
		(Principal Executive Officer)
Dated: August 6, 2026	By:	/s/ James J. Hinnendael
		James J. Hinnendael
		Executive Vice President and Chief Financial Officer
		(Principal Financial and Accounting Officer)

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