Seanergy Maritime Holdings Corp.
Seanergy Maritime Holdings Corp. (SHIP) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SHIP · as of Sep 30, 2025
Ownership Breakdown
50
Institutional Holders
▲ 14 vs Q2
$17.97M
Total Inst. Value
▲ $7.09M vs Q2
21.11M
Shares Outstanding
freeFloat 67.99%
2.18M
13F Shares Held
▲ 451,345 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SHIP largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
RENAISSANCE TECHNOLOGIES LLC deep sea foreign transportation of freight | 559.7K | 2.75% | 2.75% | $4.62B | Nov 13, 2025 | ▲ 17.4K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP deep sea foreign transportation of freight | 307.3K | 1.51% | 1.51% | $2.54B | Nov 14, 2025 | ▲ 125.6K |
GOLDMAN SACHS GROUP INC deep sea foreign transportation of freight | 236.1K | 1.16% | 1.16% | $1.95B | Nov 14, 2025 | ▲ 90.8K |
MORGAN STANLEY deep sea foreign transportation of freight | 152.5K | 74.94% | 74.94% | $1.26B | May 27, 2026 | ▼ 1.2K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP deep sea foreign transportation of freight | 134.3K | 65.99% | 65.99% | $1.11B | Nov 14, 2025 | ▲ 56.2K |
TWO SIGMA INVESTMENTS, LP deep sea foreign transportation of freight | 92.3K | 45.35% | 45.35% | $762.58M | Nov 14, 2025 | ▼ 10.8K |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP deep sea foreign transportation of freight | 84.3K | 41.39% | 41.39% | $695.94M | Nov 13, 2025 | ▼ 2.3K |
CITADEL ADVISORS LLC deep sea foreign transportation of freight | 81.4K | 39.97% | 39.97% | $672.00M | Nov 14, 2025 | ▲ 56.1K |
BLACKROCK, INC. deep sea foreign transportation of freight | 75.0K | 36.87% | 36.87% | $619.84M | Nov 12, 2025 | ▲ 536 |
TWO SIGMA ADVISERS, LP deep sea foreign transportation of freight | 62.4K | 30.68% | 30.68% | $515.80M | Nov 14, 2025 | ▼ 45.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
20
Increased
+597.6K shares10
New Positions
first time holders14
Decreased
−240.2K shares0
Sold Out
fully exitedNet shares change (top 50)
+357.4K
+597.6K / −240.2K
Net new holders
+16
10 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SHIP insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Gyftakis Stavros See Remarks | Apr 6, 2026 | Sale | 3,570 | $13.95 | $49.8K | 236.3K | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Jul 27, 2009 | Sale | 1,314 | $6.50 | $8.5K | 3.26M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Dec 16, 2008 | Sale | 28,148 | $6.50 | $183.0K | 3.27M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Dec 17, 2008 | Sale | 11,400 | $6.50 | $74.1K | 3.26M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Nov 14, 2008 | Sale | 13,900 | $6.50 | $90.3K | 3.30M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Nov 17, 2008 | Sale | 1,600 | $6.50 | $10.4K | 3.30M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Nov 12, 2008 | Sale | 3,000 | $6.50 | $19.5K | 3.33M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Nov 13, 2008 | Sale | 15,850 | $6.50 | $103.0K | 3.32M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Oct 31, 2008 | Sale | 80,000 | $6.50 | $520.0K | 3.34M | Form 4 ↗ |
Nisswa Acquisition Master Fund Ltd. 10 percent owner | Oct 29, 2008 | Sale | 3,600 | $6.50 | $23.4K | 3.45M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Seanergy Maritime Holdings Corp. (SHIP) is primarily owned by institutional investors, who hold approximately 10.3% of total shares outstanding. Company insiders own approximately 32.01%, while retail and public investors account for the remaining 57.69%.
The largest institutional shareholder of Seanergy Maritime Holdings Corp. is RENAISSANCE TECHNOLOGIES LLC, holding approximately 559,700 shares — equal to 2.75% of outstanding shares — as of September 30, 2025.
A total of 50 institutional investors currently hold SHIP stock, with a combined institutional value of approximately $17,967,650 as of the most recent 13F filing period.
Frequently asked questions
SHIP ownershipSeanergy Maritime Holdings Corp. (SHIP) is primarily owned by institutional investors, who hold approximately 10.3% of shares. The largest shareholder is RENAISSANCE TECHNOLOGIES LLC with a 2.75% stake. Company insiders hold 32.01%. Data sourced from SEC Form 13F as of September 30, 2025.