$CMDB

$20.16 +$0.19 (0.95%) Close

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

Ownership

13F as of Q2 2026 · 16.4M shares outstanding

Who owns CMDB?

By type of holder

Institutions 31.2% Insiders 0.0% Everyone else 68.8%

Concentration Top 10 holders own 96.5%

Konstantakopoulos Konstantinos 45.6% · Achillefs Konstantakopoulos 30.4%

Institutional ownership

31.2%

0.0 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+7.3K

by institutions in Q2 2026

New / sold out

10 / 9

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Ameriprise Financial Inc +48.0K
Jacobs Levy Equity Management, Inc NEW +37.8K

Biggest sellers in Q2 2026

Walleye Capital LLC −53.9K
Schonfeld Strategic Advisors LLC SOLD OUT −45.4K

Who is planning to sell?

Notices of proposed sale, last 12 months

$732K

2 notices from 1 person

Shares covered

40.0K

0.24% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Dilofo Holdings Limited Officer $732K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Costamare Bulkers Holdings Ltd.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years74% Under 1 year26%

Quarterly turnover

6.6%

of institutional shares changed hands

Top 10 managers, median time held

1 year

Super Investors

Investment managers reporting CMDB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
DF Dimensional Fund Advisors LP	1.3M	7.91%	−14.4K (−1.1%)	2025	0.0%
Shares held by quarter Peak holding1.5M (Q2'25) Change over 8 quarters+1.3M Share of the company7.910% Dimensional Fund Advisors LP's full portfolio →
B BlackRock, Inc.	556.3K	3.40%	+16.6K (+3.1%)	2025	0.0%
Shares held by quarter Peak holding556.3K (Q2'26) Change over 8 quarters+556.3K Share of the company3.400% BlackRock, Inc.'s full portfolio →

Dimensional Fund Advisors LP

1.3M

% of company

7.91%

Change vs last qtr

−14.4K (−1.1%)

Held since

2025

BlackRock, Inc.

556.3K

% of company

3.40%

Change vs last qtr

+16.6K (+3.1%)

Held since

2025

28 more super investors behind a free account

See every manager holding Costamare Bulkers Holdings Ltd, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CMDB on Form N-PORT; together they hold 5.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$4.61M	285.5K	1.74%	0.02%	May 31, 2026
DU Dimensional US Small Cap Value ETF Dimensional ETF Trust	$2.09M	106.9K	0.65%	0.03%	July 31, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$4.61M

% of company

1.74%

% of the fund

0.02%

As of

May 31, 2026

Dimensional US Small Cap Value ETF

Dimensional ETF Trust

Position value

$2.09M

% of company

0.65%

% of the fund

0.03%

As of

July 31, 2026

23 more funds behind a free account

See every fund holding Costamare Bulkers Holdings 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
KK Konstantakopoulos Konstantinos 5%+ holder 13D · 30.9%	7.5M	45.55%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company45.550% Disclosed stake13D · 30.9% View the 13D/G filing →
AK Achillefs Konstantakopoulos 5%+ holder 13D · 20.5%	5.0M	30.41%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company30.410% Disclosed stake13D · 20.5% View the 13D/G filing →

Konstantakopoulos Konstantinos

5%+ holder13D · 30.9%

7.5M

% of company

45.55%

Change vs last qtr

—

Held since

—

Achillefs Konstantakopoulos

5%+ holder13D · 20.5%

5.0M

% of company

30.41%

Change vs last qtr

—

Held since

—

Comments