MARTEN TRANSPORT LTD (MRTN) Institutional Ownership and Insiders Activity

MARTEN TRANSPORT LTD (MRTN) is widely held by institutional investors, with 227 firms reporting positions valued at approximately $1.05B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $174.52M in MRTN holdings in its latest filing.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.