United Maritime

USEA · NASDAQ

$2.41−$0.04 (−1.63%)TodayMarket closed · Oct 20, 7:30 PM ET

Prev close $2.45

Who owns USEA

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 30.3% of USEA’s shares.

Tsantanis (Stamatios N)14.6%
Kostopoulos (Dimitrios)3.5%
Anagnostara (Christina)2.6%
Gyftakis (Stavros)2.5%
Next 6 largest institutions7.1%
All other shareholders69.7%

Top institutional holders of USEA
Holder	Shares	% of shares	Change, last filing	Filed
Tsantanis (Stamatios N)	1.39M	14.62%	+0	Mar 9, 2026
Kostopoulos (Dimitrios)	335.00K	3.51%	+15.00K	Jul 31, 2026
Anagnostara (Christina)	245.23K	2.57%	+25.23K	Dec 31, 2025
Gyftakis (Stavros)	241.68K	2.53%	−5.00K	Jul 13, 2026
Renaissance Technologies LLC	222.57K	2.33%	−9.96K	Jun 30, 2026
Kartsonas (Ioannis)	148.57K	1.56%	+29.50K	Dec 31, 2025
UBS Switzerland AG	88.20K	0.92%	+10.40K	Jun 30, 2026
NewEdge Advisors, LLC	81.11K	0.85%	+54.77K	Jun 30, 2026
Angeles Wealth Management, LLC	77.05K	0.81%	+0	Jun 30, 2026
Acadian Asset Management LLC	55.72K	0.58%	+0	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of USEA
Holder	Shares	% of shares	Change, last filing	Filed
Fidelity NASDAQ Composite Index Fund	4.47K	0.05%	+3.86K	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders bought $89.10K (2 trades) and sold $26.65K (2 trades) of USEA on the open market.

Latest USEA insider transactions
Insider	Date	Type	Shares	Price	Value
Gyftakis Stavros	Oct 5, 2026	Sale	5.00K	$2.69	$13.45K
Kostopoulos Dimitrios	Jul 31, 2026	Buy	15.00K	$2.74	$41.10K
Gyftakis Stavros	Jul 13, 2026	Sale	5.00K	$2.64	$13.20K
Kostopoulos Dimitrios	May 22, 2026	Buy	20.00K	$2.40	$48.00K

Short interest

Settled Sep 30, 2026

Shares short: 1.40M
Days to cover: 8.16
% of shares outstanding: 14.63%
Average daily volume: 171.02K
Change since last report: +4.6%

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