X0306 4 2020-04-29 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001187222 KOHL TIMOTHY M 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 President Common Stock 2020-04-29 4 M 0 25414 13.512 A 228674.31 D Common Stock 2020-04-29 4 S 0 25414 22.9375 D 203260.31 D Common Stock 2020-05-01 4 M 0 14586 13.512 A 217846.31 D Common Stock 2020-05-01 4 S 0 14586 23.1715 D 203260.31 D Stock Option (right to buy) 13.512 2020-04-29 4 M 0 25414 0 D 2022-05-12 Common Stock 25414 24586 D Stock Option (right to buy) 13.512 2020-05-01 4 M 0 14586 0 D 2022-05-12 Common Stock 14586 10000 D Includes: (i) 4,520 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2023; (ii) 3,210 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2022; (iii) 5,200 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020 through 12/31/2021; (iv) 692 shares granted under a Performance Unit Award Agreement that vest on 12/31/2020; and (v) 66,910.31 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 $22.76 to $23.19, 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 (2) 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 $23.135 to $23.20, 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. All shares are vested except for 10,000 shares that will vest on May 12, 2020. /s/ James J. Hinnendael, attorney-in-fact 2020-05-01