United Maritime Corporation (USEA)
Nasdaq: USEA · Water Transportation · filing with the SEC since 2022
Who owns United Maritime Corporation
As filed with the SECHolders of 5% or more
1
Tsantanis Stamatios holds 14.6% of Common Stock, par value $0.0001 per share, as its SCHEDULE 13D/A filed Apr 8, 2026 says.
Directors and officers
5
report now, of 5 people on the record since 2026. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 1 named at left.
Holders of 5% or moreshare of the class, as filed
Tsantanis Stamatios
SCHEDULE 13D/A · filed Apr 8, 2026 · Common Stock, par value $0.0001 per share · 13% in Apr 10, 2025
What USEA reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
RGI Marine Holdings AS
An investee · investee · invested in, named in the 20-F filed Apr 8, 2026
Wind Energy Construction SA
An investee · investee · invested in, named in the 20-F filed Apr 8, 2026
13 subsidiaries in 1 country, from the list filed with the 20-F filed Apr 8, 2026.
Insider tradesForm 4
3sales
2purchases
0sales on a scheduled plan
1people selling
$0sold, in dollars
$100,000bought, in dollars
Open-market trades on Form 4 from Oct 7, 2025 to Oct 7, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 7, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 5 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Kostopoulos Dimitrios | director | 0 | $0 | 0 | 2 | $100,000 |
| Gyftakis Stavros | See Remarks | 3 | $0 | 0 | 0 | $0 |