X0306 4 2021-11-23 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 2021-11-23 4 F 0 13179 17.37 D 268149.4 D These shares were withheld to cover the estimated tax withholding obligations in connection with the issuance of 29,220 shares released from the Issuer's deferred compensation plan which terminated effective May 5, 2021. Includes: (i) 10,447 shares granted under a Performance Unit Award Agreement that vest on 12/31/2021 through 12/31/2025; (ii) 3,020 shares granted under a Performance Unit Award Agreement that vest on 12/31/2021 through 12/31/2024; (iii) 5,085 shares granted under a Performance Unit Award Agreement that vest on 12/31/2021 through 12/31/2023; (iv) 3,210 shares granted under a Performance Unit Award Agreement that vest on 12/31/2021 through 12/31/2022; (v) 3,900 shares granted under a Performance Unit Award Agreement that vest on 12/31/2021; and (vi) 29,219.40 shares that the reporting person has deferred under the Issuer's deferred compensation plan. /s/ James J. Hinnendael, attorney-in-fact 2021-11-23