X0206 3 2023-12-13 0 0000799167 MARTEN TRANSPORT LTD MRTN 0002005041 Phillips Adam Daniel 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 EVP & Chief Operating Officer Common Stock 4200 D Stock Option (right to buy) 10.867 2024-08-15 Common Stock 4500 D Stock Option (right to buy) 15.167 2025-08-14 Common Stock 4500 D Stock Option (right to buy) 17.36 2028-05-04 Common Stock 3000 D Stock Option (right to buy) 16.93 2028-12-15 Common Stock 3000 D Includes: (i) 1,500 shares granted under a Performance Unit Award Agreement that vest on 12/31/2023 through 12/31/2027; (ii) 1,200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2023 through 12/31/2026; (iii) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2023 through 12/31/2025; (iv) 600 shares granted under a Performance Unit Award Agreement that vest on 12/31/2023 through 12/31/2024; and (v) 300 shares granted under a Performance Unit Award Agreement that vest on 12/31/2023. This option has fully vested. This option vested with respect to 600 shares on each of May 4, 2022 and May 4, 2023 and will vest with respect to 600 shares on each May 4, 2024, May 4, 2025 and May 4, 2026. This option vested with respect to 600 shares on December 15, 2022, and will vest with respect to 600 shares on each of December 15, 2023, December 15, 2024, December 15, 2025 and December 15, 2026. /s/ James J. Hinnendael, attorney-in-fact 2023-12-21