12 insiders reported 37 Form 4 transactions for MARTEN TRANSPORT LTD (MRTN) over the past 18 months (most recent 2026-05-07). Recent activity: DEMOREST ROBERT L (Director) Buy 4,100 shares, IVERSON KATHLEEN P (Director) Buy 4,100 shares, Jones Patricia L (Director) Buy 4,100 shares, BAUER JERRY M (Director) Buy 4,100 shares, HAGNESS LARRY B (Director) Buy 4,100 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-07 | DEMOREST ROBERT L | Director | Buy | 4,100 | $0 |
| 2026-05-07 | IVERSON KATHLEEN P | Director | Buy | 4,100 | $0 |
| 2026-05-07 | Jones Patricia L | Director | Buy | 4,100 | $0 |
| 2026-05-07 | BAUER JERRY M | Director | Buy | 4,100 | $0 |
| 2026-05-07 | HAGNESS LARRY B | Director | Buy | 4,100 | $0 |
| 2026-05-07 | MARTEN RANDOLPH L | Chairman of the Board and CEO | Buy | 12,300 | $0 |
| 2026-05-07 | Hinnendael James J | EVP & Chief Financial Officer | Buy | 6,766 | $0 |
| 2026-05-07 | Booth Ronald Richard | Director | Buy | 4,100 | $0 |
| 2026-05-07 | Petit Douglas Paul | President | Buy | 6,423 | $0 |
| 2026-05-07 | Baier Randall John | Exec. VP & Chief Tech. Officer | Buy | 4,817 | $0 |
| 2026-05-07 | Phillips Adam Daniel | EVP & Chief Operating Officer | Buy | 4,661 | $0 |
| 2026-02-23 | Petit Douglas Paul | President | Sell | 2,299 | $31,956 |
| 2026-02-23 | Baier Randall John | Exec. VP & Chief Tech. Officer | Sell | 1,273 | $17,695 |
| 2026-02-23 | Phillips Adam Daniel | EVP & Chief Operating Officer | Sell | 1,131 | $15,721 |
| 2026-02-23 | Hinnendael James J | Exec. VP and CFO | Sell | 2,885 | $40,102 |
| 2026-02-23 | MARTEN RANDOLPH L | Chairman of the Board and CEO | Sell | 4,657 | $64,732 |
| 2025-12-29 | DEMOREST ROBERT L | Director | Sell | 6,580 | $0 |
| 2025-08-19 | MARTEN RANDOLPH L | Executive Chairman of Board | Sell | 1,500 | $0 |
| 2025-05-08 | Baier Randall John | Exec. VP & Chief Tech. Officer | Buy | 4,957 | $0 |
| 2025-05-08 | Booth Ronald Richard | Director | Buy | 4,500 | $0 |
| 2025-05-08 | KOHL TIMOTHY M | Chief Executive Officer | Buy | 12,408 | $0 |
| 2025-05-08 | Phillips Adam Daniel | EVP & Chief Operating Officer | Buy | 5,122 | $0 |
| 2025-05-08 | Hinnendael James J | Exec. VP and CFO | Buy | 6,807 | $0 |
| 2025-05-08 | Jones Patricia L | Director | Buy | 4,500 | $0 |
| 2025-05-08 | MARTEN RANDOLPH L | Exec. Chairman of the Board | Buy | 13,515 | $0 |
Source: SEC Form 4 filings · as of 2026-05-07