Seanergy Maritime
Operates large dry-bulk vessels under largely index-linked time charters.
$18.01
After-hours close+0.23 (+1.30%)
At close$17.78(+0.68%)
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Breakdown13F · Form 4
Institutions 25.25%5.33M sharesInsiders 12.51%2.64M sharesOther 62.24%13.14M shares
Shares outstanding 21.11M · Float 14.36M · 68.0% free float
Institutions13F, as of Mar 31, 2026
69 holders · 5.33M shares · 20 new positions · 47 increased · 13 reduced · 4 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Goldman Sachs Group Inc | 814.6K | 3.86% | +583.1K | May 15, 2026 |
| Renaissance Technologies LLC | 652.3K | 3.09% | +88.8K | May 14, 2026 |
| Two Sigma Investments, LP | 556.5K | 2.64% | +417.3K | May 15, 2026 |
| Acadian Asset Management LLC | 335.6K | 1.59% | +327.3K | May 13, 2026 |
| Walleye Capital LLC | 287.5K | 1.36% | −7.0K | May 13, 2026 |
| Morgan Stanley | 233.7K | 1.11% | +50.8K | May 15, 2026 |
| Marshall Wace, LLP | 174.3K | 0.83% | +174.3Knew | May 15, 2026 |
| Point72 Asset Management, L.P. | 172.6K | 0.82% | +17.4K | May 15, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Konstantakopoulos Konstantinos | 10.20% | 2.20M | 13G | Apr 8, 2026 ↗ |
| Tsantanis Stamatios | 9.62% | 2.08M | 13D | Mar 31, 2026 ↗ |
| Maryport Navigation Corp.incl. Sphinx Investment Corp., George Economou | 8.80% | 1.85M | 13D | Mar 16, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Stamatios Tsantanis | director, officer: Director, CEO | 2.08M | 9.87% | Mar 18, 2026 |
| Stavros Gyftakis | officer: See Remarks | 233.0K | 1.10% | Jul 15, 2026 |
| Christina Anagnostara | director | 178.2K | 0.84% | Aug 7, 2026 |
| Dimitrios Anagnostopoulos | director | 73.3K | 0.35% | Mar 18, 2026 |
| Elias Culucundis | director | 72.8K | 0.34% | Mar 18, 2026 |
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 6, 2026 | Christina Anagnostaradirector | Sale | 15,000 | $17.19 | 178,239 |
| Jul 13, 2026 | Stavros Gyftakisofficer: See Remarks | Sale | 3,300 | $14.81 | 232,995 |
| Apr 6, 2026 | Stavros Gyftakisofficer: See Remarks | Sale | 3,570 | $13.95 | 236,295 |
CongressHouse and Senate disclosures
Not reported.