USEANasdaqWater TransportationFiscal year ends December 31
United Maritime Corp
Financials through Q4 FY2025, quarter ended Dec 31, 2025Last filing: 20-F on Apr 8, 2026
$2.45−0.07 (-2.78%)
Close on Oct 19, 2026
- Market cap
- –
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Who owns United Maritime's shares
Held by institutions
–
Shares held, 13F filers
Institutional holders
–
Net institutional buying
–
Insider trades, 12 months
2 buys · 2 sales
Net bought $65.50K
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Tsantanis Stamatios | 1,394,534 | 14.62% | 13D (active) amendment | Mar 9, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Stavros Gyftakis | See Remarks, Director | 246,678 | 2.70% | Jul 15, 2026 |
| Stamatios Tsantanis | Director, CEO | 1,394,534 | 15.28% | Mar 18, 2026 |
| Dimitrios Kostopoulos | Director | 335,000 | 3.67% | Aug 4, 2026 |
| Christina Anagnostara | Director | 245,231 | 2.69% | Mar 18, 2026 |
| Ioannis Kartsonas | Director | 148,567 | 1.63% | Mar 18, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Dimitrios Kostopoulos Director | Jul 31, 2026 | Buy | +15,000 | $2.74 | $41.10K | 335,000 |
| Stavros Gyftakis See Remarks, Director | Jul 13, 2026 | Sale | −5,000 | $2.64 | $13.20K | 246,678 |
| Dimitrios Kostopoulos Director | May 22, 2026 | Buy | +20,000 | $2.40 | $48.00K | 320,000 |
| Stavros Gyftakis See Remarks, Director | Apr 6, 2026 | Sale | −5,000 | $2.08 | $10.40K | 251,678 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Ioannis Kartsonas Director | Oct 11, 2023 | 93,000 | $237.00K | Oct 10, 2023 | STOCK AWARD |
| Ioannis Kartsonas Director | May 26, 2023 | 71,963 | $201.50K | May 25, 2023 | STOCK AWARD |