$MRTN

$12.02 +$0.21 (1.78%) Close

$MRTN Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 81.7M shares outstanding

Who owns MRTN?

By type of holder

Institutions 74.9% Insiders 23.0% Everyone else 2.1%

Concentration Top 10 holders own 60.5%

Marten Randolph L 21.7% · BlackRock, Inc. 12.3%

Institutional ownership

74.9%

+4.0 pts vs last qtr

Institutional holders

229

+4 vs last qtr

Net shares bought

+3.3M

by institutions in Q2 2026

New / sold out

40 / 36

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Cramer Rosenthal Mcglynn LLC NEW +1.5M
Goldman Sachs Group Inc +1.5M

Biggest sellers in Q2 2026

Nuance Investments, LLC −4.3M
Boston Partners −650.7K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Marten Transport, Ltd. in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+49.7%

+4.58% a year

Each share's claim on the business

−33.2%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$53.6M vs $6.41M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years70% 3–5 years4% 1–3 years10% Under 1 year16%

Quarterly turnover

17.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MRTN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	10.1M	12.32%	+298.9K (+3.1%)	≤2021	0.0%
Shares held by quarter Peak holding10.1M (Q2'26) Change over 8 quarters+1.2M Share of the company12.320% BlackRock, Inc.'s full portfolio →
DF Dimensional Fund Advisors LP	5.0M	6.12%	+105.7K (+2.2%)	≤2021	0.0%
Shares held by quarter Peak holding5.8M (Q3'24) Change over 8 quarters−822.2K Share of the company6.120% Dimensional Fund Advisors LP's full portfolio →

BlackRock, Inc.

10.1M

% of company

12.32%

Change vs last qtr

+298.9K (+3.1%)

Held since

≤2021

Dimensional Fund Advisors LP

5.0M

% of company

6.12%

Change vs last qtr

+105.7K (+2.2%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Marten Transport, Ltd., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MRTN on Form N-PORT; together they hold 40.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$60.6M	3.5M	4.27%	0.05%	June 30, 2026
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$41.3M	2.4M	2.93%	0.15%	May 31, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$60.6M

% of company

4.27%

% of the fund

0.05%

As of

June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$41.3M

% of company

2.93%

% of the fund

0.15%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding Marten Transport, Ltd. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
MR Marten Randolph L Insider	17.7M	21.73%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company21.730% Marten Randolph L's insider activity →
KT Kohl Timothy M Insider	291.0K	0.36%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.360% Kohl Timothy M's insider activity →

Marten Randolph L

Insider

17.7M

% of company

21.73%

Change vs last qtr

—

Held since

—

Kohl Timothy M

Insider

291.0K

% of company

0.36%

Change vs last qtr

—

Held since

—

10 more holders behind a free account

See every insider and 5%+ holder of Marten Transport, Ltd..

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