X0306 4 2020-09-30 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001187222 KOHL TIMOTHY M 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 President Common Stock 2020-09-30 4 A 0 246.38 0 A 284072.42 D Represents dividend equivalent rights that accrued on September 30, 2020. On July 16, 2020, Marten declared a three-for-two stock split effected in the form of a stock dividend, payable on August 13, 2020 to all holders of record of common stock on July 30, 2020. Includes: (i) 3,776 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2024; (ii) 6,780 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2023; (iii) 4,815 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2022; (iv) 7,800 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2021; (v) 1,038 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020; and (vi) 100,771.42 shares that the reporting person has deferred under the Issuer's deferred compensation plan. /s/ James J. Hinnendael, attorney-in-fact 2020-10-01