X0306 4 2022-03-01 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001187222 KOHL TIMOTHY M 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 Chief Executive Officer Common Stock 2022-03-01 4 A 0 10398.69 0 A 278617 D Common Stock 2022-03-01 4 F 0 9699 17.31 D 268918 D Common Stock 2022-03-01 4 F 0 13210 17.31 D 255708 D Excludes shares that were previously reported as they vested based on service. Includes: (i) 8,360 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2025; (ii) 2,265 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2024; (iii) 3,390 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2023; and (iv) 1,605 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 29,289 shares released from the Issuer's deferred compensation plan which terminated effective May 5, 2021. /s/ James J. Hinnendael, attorney-in-fact 2022-03-03