X0306 4 2022-03-01 0 0000799167 MARTEN TRANSPORT LTD MRTN 0001253983 TURNER JOHN H 129 MARTEN STREET MONDOVI WI 54755 0 1 0 0 EVP Sales & Marketing Common Stock 2022-03-01 4 A 0 6059.18 0 A 97183 D Common Stock 2022-03-01 4 F 0 5947 17.31 D 91236 D Common Stock 2022-03-01 4 F 0 7881 17.31 D 83355 D Common Stock 2022-03-03 4 M 0 9661 9.008 A 93016 D Common Stock 2022-03-03 4 S 0 9661 18.0895 D 83355 D Stock Option (right to buy) 9.008 2022-03-03 4 M 0 9661 0 D 2022-05-12 Common Stock 9661 0 D Excludes shares that were previously reported as they vested based on service. Includes: (i) 4,572 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2025; (ii) 1,491 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2024; (iii) 2,010 shares granted under a Performance Unit Award Agreement that vest on 12/31/2022 through 12/31/2023; and (iv) 885 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 16,418 shares released from the Issuer's deferred compensation plan which terminated effective May 5, 2021. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.97 to $18.24, 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. This option has fully vested. /s/ James J. Hinnendael, attorney-in-fact 2022-03-03