Adam Daniel Phillips - 06 May 2025 Form 4 Insider Report for MARTEN TRANSPORT LTD (MRTN)

Role: EVP & Chief Operating Officer
Signature: /s/ James J. Hinnendael, attorney-in-fact
Issuer symbol: MRTN
Transactions as of: 06 May 2025
Net transactions value: $0
Form type: 4
Filing time: 08 May 2025, 17:07:08 UTC
Previous filing: 12 Mar 2025
Next filing: 23 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Phillips Adam Daniel	EVP & Chief Operating Officer	C/O MARTEN TRANSPORT, LTD., 129 MARTEN STREET, MONDOVI	/s/ James J. Hinnendael, attorney-in-fact	08 May 2025	0002005041

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRTN	Common Stock	Award	$0	+5,122	+77%	$0.000000	11,754	06 May 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.
F2	Includes: (i) 5,122 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 3,086 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.

Content

These shares granted under a Performance Unit Award Agreement will vest in equal increments over five years beginning on December 31, 2025.

Includes: (i) 5,122 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2029; (ii) 3,086 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2028; (iii) 900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2027; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025 through 12/31/2026; and (v) 200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2025.