International Seaways, Inc.
International Seaways, Inc. (INSW) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · INSW · as of Sep 30, 2025
Ownership Breakdown
273
Institutional Holders
▲ 14 vs Q2
$1.70B
Total Inst. Value
▲ $350.54M vs Q2
49.50M
Shares Outstanding
freeFloat 83.77%
36.82M
13F Shares Held
▼ 78,298 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
INSW largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. water transportation | 6.02M | 12.21% | 12.21% | $277.40B | Nov 12, 2025 | ▼ 118.9K |
VANGUARD GROUP INC water transportation | 4.35M | 8.83% | 8.83% | $200.63B | Nov 7, 2025 | ▼ 27.3K |
FMR LLC water transportation | 3.68M | 7.45% | 7.45% | $169.37B | Nov 13, 2025 | ▲ 1.61M |
DIMENSIONAL FUND ADVISORS LP water transportation | 2.90M | 5.89% | 5.89% | $133.81B | Nov 12, 2025 | ▲ 42.1K |
AMERICAN CENTURY COMPANIES INC water transportation | 1.99M | 4.04% | 4.04% | $91.93B | Nov 12, 2025 | ▲ 139.9K |
MACQUARIE GROUP LTD water transportation | 1.89M | 3.84% | 3.84% | $87.22B | Nov 13, 2025 | ▼ 162.0K |
STATE STREET CORP water transportation | 1.55M | 3.15% | 3.15% | $71.59B | Nov 14, 2025 | ▼ 100.8K |
GEODE CAPITAL MANAGEMENT, LLC water transportation | 1.01M | 2.04% | 2.04% | $46.39B | Nov 12, 2025 | ▲ 175 |
ENCOMPASS CAPITAL ADVISORS LLC water transportation | 874.2K | 1.77% | 1.77% | $40.28B | Nov 14, 2025 | ▲ 474.4K |
MORGAN STANLEY water transportation | 820.5K | 1.66% | 1.66% | $37.81B | May 27, 2026 | ▼ 28.1K |
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
21
Increased
+2.95M shares1
New Positions
first time holders27
Decreased
−919.2K shares0
Sold Out
fully exitedNet shares change (top 50)
+2.03M
+2.95M / −919.2K
Net new holders
-5
1 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
INSW 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
5
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 |
|---|---|---|---|---|---|---|---|
Zabrocky Lois K President & CEO | May 15, 2026 | Sale | 2,000 | $84.23 | $168.5K | 179.7K | Form 4 ↗ |
Pribor Jeffrey SVP & CFO | May 15, 2026 | Sale | 1,000 | $83.72 | $83.7K | 103.0K | Form 4 ↗ |
Nugent William F. Senior Vice President | May 14, 2026 | Sale | 6,830 | $85.23 | $582.1K | 49.2K | Form 4 ↗ |
Solon Derek G. Senior Vice President | May 12, 2026 | Sale | 4,700 | $89.22 | $419.3K | 49.7K | Form 4 ↗ |
Zabrocky Lois K President & CEO | May 12, 2026 | Sale | 25,000 | $88.08 | $2.20M | 181.7K | Form 4 ↗ |
Pribor Jeffrey SVP & CFO | Apr 15, 2026 | Sale | 1,000 | $74.50 | $74.5K | 104.0K | Form 4 ↗ |
Zabrocky Lois K President & CEO | Apr 15, 2026 | Sale | 2,000 | $74.57 | $149.1K | 206.7K | Form 4 ↗ |
Pribor Jeffrey SVP & CFO | Mar 16, 2026 | Tax Withhold | 8,708 | $68.63 | $597.6K | 105.0K | Form 4 ↗ |
Pribor Jeffrey SVP & CFO | Mar 16, 2026 | Sale | 1,000 | $66.50 | $66.5K | 100.5K | Form 4 ↗ |
Zabrocky Lois K President & CEO | Mar 16, 2026 | Sale | 2,000 | $67.79 | $135.6K | 208.7K | 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
International Seaways, Inc. (INSW) is primarily owned by institutional investors, who hold approximately 74.4% of total shares outstanding. Company insiders own approximately 16.23%, while retail and public investors account for the remaining 9.38%.
The largest institutional shareholder of International Seaways, Inc. is BLACKROCK, INC., holding approximately 6.02 million shares — equal to 12.21% of outstanding shares — as of September 30, 2025.
A total of 273 institutional investors currently hold INSW stock, with a combined institutional value of approximately $1.70 billion as of the most recent 13F filing period.
Frequently asked questions
INSW ownershipInternational Seaways, Inc. (INSW) is primarily owned by institutional investors, who hold approximately 74.4% of shares. The largest shareholder is BLACKROCK, INC. with a 12.21% stake. Company insiders hold 16.23%. Data sourced from SEC Form 13F as of September 30, 2025.