Marten Transport, Ltd.
Marten Transport, Ltd. (MRTN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MRTN · as of Mar 31, 2025
Ownership Breakdown
201
Institutional Holders
▲ 1 vs Q4
$791.68M
Total Inst. Value
▼ $106.50M vs Q4
81.59M
Shares Outstanding
freeFloat 70.61%
57.71M
13F Shares Held
▲ 168,089 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
MRTN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. trucking (no local) | 8.92M | 10.95% | 10.95% | $122.38B | May 2, 2025 | ▼ 237.9K |
DIMENSIONAL FUND ADVISORS LP trucking (no local) | 5.51M | 6.76% | 6.76% | $75.53B | May 13, 2025 | ▼ 245.2K |
NUANCE INVESTMENTS, LLC trucking (no local) | 5.24M | 6.43% | 6.43% | $71.86B | May 13, 2025 | ▲ 2.04M |
VANGUARD GROUP INC trucking (no local) | 4.21M | 5.17% | 5.17% | $57.77B | May 9, 2025 | ▲ 14.7K |
VICTORY CAPITAL MANAGEMENT INC trucking (no local) | 4.14M | 5.07% | 5.07% | $56.74B | May 2, 2025 | ▲ 63.9K |
GENEVA CAPITAL MANAGEMENT LLC trucking (no local) | 3.16M | 3.87% | 3.87% | $43.29B | May 9, 2025 | ▲ 15.2K |
STATE STREET CORP trucking (no local) | 2.41M | 2.95% | 2.95% | $33.01B | May 15, 2025 | ▼ 52.9K |
AMERICAN CENTURY COMPANIES INC trucking (no local) | 1.96M | 2.41% | 2.41% | $26.91B | May 13, 2025 | ▲ 158.0K |
GEODE CAPITAL MANAGEMENT, LLC trucking (no local) | 1.45M | 1.78% | 1.78% | $19.86B | May 13, 2025 | ▲ 45.9K |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trucking (no local) | 1.43M | 1.76% | 1.76% | $19.63B | May 9, 2025 | ▼ 61.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
25
Increased
+4.03M shares2
New Positions
first time holders22
Decreased
−2.37M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.66M
+4.03M / −2.37M
Net new holders
+5
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
MRTN insider trading · insider activity
Source: SEC Form 4
11
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Jones Patricia L director | May 5, 2026 | Award | 4,100 | — | — | 15.1K | Form 4 ↗ |
HAGNESS LARRY B director | May 5, 2026 | Award | 4,100 | — | — | 210.6K | Form 4 ↗ |
IVERSON KATHLEEN P director | May 5, 2026 | Award | 4,100 | — | — | 22.9K | Form 4 ↗ |
Booth Ronald Richard director | May 5, 2026 | Award | 4,100 | — | — | 32.3K | Form 4 ↗ |
BAUER JERRY M director | May 5, 2026 | Award | 4,100 | — | — | 185.0K | Form 4 ↗ |
DEMOREST ROBERT L director | May 5, 2026 | Award | 4,100 | — | — | 58.9K | Form 4 ↗ |
Hinnendael James J EVP & Chief Financial Officer | May 5, 2026 | Award | 6,766 | — | — | 161.6K | Form 4 ↗ |
MARTEN RANDOLPH L Chairman of the Board and CEO | May 5, 2026 | Award | 12,300 | — | — | 17.74M | Form 4 ↗ |
Phillips Adam Daniel EVP & Chief Operating Officer | May 5, 2026 | Award | 4,661 | — | — | 15.3K | Form 4 ↗ |
Petit Douglas Paul President | May 5, 2026 | Award | 6,423 | — | — | 40.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Marten Transport, Ltd. (MRTN) is primarily owned by institutional investors, who hold approximately 70.7% of total shares outstanding. Company insiders own approximately 29.39%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Marten Transport, Ltd. is BLACKROCK, INC., holding approximately 8.92 million shares — equal to 10.95% of outstanding shares — as of March 31, 2025.
A total of 201 institutional investors currently hold MRTN stock, with a combined institutional value of approximately $791,684,110 as of the most recent 13F filing period.
Frequently asked questions
MRTN ownershipMarten Transport, Ltd. (MRTN) is primarily owned by institutional investors, who hold approximately 70.7% of shares. The largest shareholder is BLACKROCK, INC. with a 10.95% stake. Company insiders hold 29.39%. Data sourced from SEC Form 13F as of March 31, 2025.