X0306 4 2022-03-01 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001348356 Hinnendael James J 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 Ex. VP and CFO Common Stock 2022-03-01 4 A 0 6257.76 0 A 151591 D Common Stock 2022-03-01 4 F 0 6259 17.31 D 145332 D Common Stock 2022-03-01 4 F 0 8122 17.31 D 137210 D Excludes shares that were previously reported as they vested based on service. Includes: (i) 4,832 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2025; (ii) 1,515 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2024; (iii) 2,040 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2023; and (iv) 1,065 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022. These shares were withheld to cover the estimated tax withholding obligations in connection with the issuance of 16,920 shares released from the Issuer's deferred compensation plan which terminated effective May 5, 2021. /s/ James J. Hinnendael 2022-03-03