X0306 4 2020-08-14 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001187222 KOHL TIMOTHY M 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 President Common Stock 2020-08-14 4 M 0 15000 9.008 A 323826.04 D Common Stock 2020-08-14 4 S 0 15000 18.6198 D 308826.04 D Common Stock 2020-08-17 4 S 0 25000 18.5536 D 283826.04 D Stock Option (right to buy) 9.008 2020-08-14 4 M 0 15000 0 D 2022-05-12 Common Stock 15000 0 D 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) 100,525.04 shares that the reporting person has deferred under the Issuer's deferred compensation plan. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.82, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.49 to $18.69, inclusive. The reporting person undertakes to provide to Marten Transport, Ltd., any security holder of Marten Transport, Ltd., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (4) to this Form 4. All shares are vested. /s/ James J. Hinnendael, attorney-in-fact 2020-08-18