X0202 SCHEDULE 13G/A 0001085146-25-002954 0001473182 XXXXXXXX LIVE 3 COMMON 04/10/2026 0000799167 MARTEN TRANSPORT LTD 573075108 129 Marten Street Mondovi WI 54755 Rule 13d-1(b) Nuance Investments LLC KS 3968604 0 0 0 0 N 4.9 IA MARTEN TRANSPORT LTD 129 Marten Street, Mondovi, WISCONSIN 54755 Nuance Investments LLC 4900 Main Street Suite 220 Kansas City, Missouri 64112 Nuance Investments LLC - KANSAS N IA 0 4.9 Nuance Investments LLC - 3,968,604 Nuance Investments LLC - 0 Nuance Investments LLC - 0 Nuance Investments LLC - 0 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. Nuance Investments LLC Kimberly McEnaney 07/06/2026