Baier Randall John (CIK 1990433) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-07). Recent activity: Buy MRTN (4,817 shares), Sell MRTN (1,273 shares), Buy MRTN (4,957 shares), Sell MRTN (927 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-07 | MARTEN TRANSPORT LTD (MRTN) | Exec. VP & Chief Tech. Officer | Buy | 4,817 | $0 |
| 2026-02-23 | MARTEN TRANSPORT LTD (MRTN) | Exec. VP & Chief Tech. Officer | Sell | 1,273 | $17,695 |
| 2025-05-08 | MARTEN TRANSPORT LTD (MRTN) | Exec. VP & Chief Tech. Officer | Buy | 4,957 | $0 |
| 2025-03-12 | MARTEN TRANSPORT LTD (MRTN) | Exec. VP & Chief Tech. Officer | Sell | 927 | $12,987 |
Source: SEC Form 4 filings · as of 2026-05-07