Marten Transport, Ltd. (MRTN) Insider Trading
Over the last 6 months, 161 institutions increased and 140 reduced their position (13F).
Insider Activity
Sentiment
50/100
Buys (3m)
0
Sells (3m)
0
Net (3m)
$0
Insider trades by month Buys Sells
Aug
Mar
Jun
Jul
Oct
Apr
Context3-month price +18.1%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 7, 2026 | IVERSON KATHLEEN Pdirector | Grant | 4,100 | — |
| May 7, 2026 | Phillips Adam Danielofficer: EVP & Chief Operating Officer | Grant | 4,661 | — |
| May 7, 2026 | DEMOREST ROBERT Ldirector | Grant | 4,100 | — |
| May 7, 2026 | Jones Patricia Ldirector | Grant | 4,100 | — |
| May 7, 2026 | MARTEN RANDOLPH Ldirector, 10 percent owner, officer: Chairman of the Board and CEO | Grant | 12,300 | — |
| May 7, 2026 | Baier Randall Johnofficer: Exec. VP & Chief Tech. Officer | Grant | 4,817 | — |
| May 7, 2026 | Petit Douglas Paulofficer: President | Grant | 6,423 | — |
| May 7, 2026 | BAUER JERRY Mdirector | Grant | 4,100 | — |
| May 7, 2026 | Booth Ronald Richarddirector | Grant | 4,100 | — |
| May 7, 2026 | Hinnendael James Jofficer: EVP & Chief Financial Officer | Grant | 6,766 | — |
| May 7, 2026 | HAGNESS LARRY Bdirector | Grant | 4,100 | — |
| Feb 23, 2026 | Hinnendael James Jofficer: Exec. VP and CFO | Tax | 2,885 | $13.90 |
| Feb 23, 2026 | MARTEN RANDOLPH Ldirector, 10 percent owner, officer: Chairman of the Board and CEO | Tax | 4,657 | $13.90 |
| Feb 23, 2026 | Phillips Adam Danielofficer: EVP & Chief Operating Officer | Tax | 1,131 | $13.90 |
| Feb 23, 2026 | Petit Douglas Paulofficer: President | Tax | 2,299 | $13.90 |
| Feb 23, 2026 | Baier Randall Johnofficer: Exec. VP & Chief Tech. Officer | Tax | 1,273 | $13.90 |
| May 8, 2025 | HAGNESS LARRY Bdirector | Grant | 4,500 | — |
| May 8, 2025 | Baier Randall Johnofficer: Exec. VP & Chief Tech. Officer | Grant | 4,957 | — |
| May 8, 2025 | Hinnendael James Jofficer: Exec. VP and CFO | Grant | 6,807 | — |
| May 8, 2025 | Phillips Adam Danielofficer: EVP & Chief Operating Officer | Grant | 5,122 | — |
| May 8, 2025 | BAUER JERRY Mdirector | Grant | 4,500 | — |
| May 8, 2025 | Booth Ronald Richarddirector | Grant | 4,500 | — |
| May 8, 2025 | MARTEN RANDOLPH Ldirector, 10 percent owner, officer: Exec. Chairman of the Board | Grant | 13,515 | — |
| May 8, 2025 | DEMOREST ROBERT Ldirector | Grant | 4,500 | — |
| May 8, 2025 | IVERSON KATHLEEN Pdirector | Grant | 4,500 | — |
| May 8, 2025 | Petit Douglas Paulofficer: President | Grant | 6,625 | — |
| May 8, 2025 | KOHL TIMOTHY Mofficer: Chief Executive Officer | Grant | 12,408 | — |
| May 8, 2025 | Jones Patricia Ldirector | Grant | 4,500 | — |
| Apr 29, 2025 | BAUER JERRY Mdirector | Buy | 20,000 | $12.88 |
| Mar 12, 2025 | Phillips Adam Danielofficer: EVP & Chief Operating Officer | Tax | 816 | $14.01 |
Source: MRTN SEC Form 4 filings, latest May 7, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MRTN positions over the last 6 months (SEC Form 13F).
Increased
161
New positions
80
Reduced
140
Sold out
68
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 9.8M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 9.7M | Feb 12, 2026 |
| NUANCE INVESTMENTS, LLC | Increased | 6.3M | Feb 11, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 4.9M | May 7, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 4.9M | Feb 12, 2026 |
| NUANCE INVESTMENTS, LLC | Reduced | 4.8M | May 8, 2026 |
| VANGUARD GROUP INC | Reduced | 4.0M | Jan 29, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 2.6M | May 15, 2026 |
| STATE STREET CORP | Increased | 2.6M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2.5M | May 15, 2026 |
| STATE STREET CORP | Increased | 2.4M | Feb 13, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 2.4M | Feb 13, 2026 |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | 1.9M | Feb 12, 2026 |
| FMR LLC | Increased | 1.8M | May 15, 2026 |
| BOSTON PARTNERS | Increased | 1.7M | May 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.