Comparable stake leader
SEA CONSOLIDATION S A OF PANAMA
SEC ownership of TSAKOS ENERGY NAVIGATION LTD
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001166663.
Disclosed value leader
Nikolaos Tsakos
Comparable rows
3/50
Latest evidence
12 Oct 2026
- Public ticker
- TEN, TEN-PE, TEN-PF on NYSE
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
SEA CONSOLIDATION S A OF PANAMA
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
3 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
SEA CONSOLIDATION S A OF PANAMA
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
12 Oct 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001166663
- Issuer location
- Athens
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of TSAKOS ENERGY NAVIGATION LTD (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
SEA CONSOLIDATION S A OF ...
Disclosed value leader
Nikolaos Tsakos
Comparable rows
3/50
Latest evidence
12 Oct 2026
13D/G
3/4/5
13F
Lead comparable stake: 17%
47 rows are not safely comparable across share classes.
13D/G row: SEA CONSOLIDATION S A OF PANAMA
Showing 1-8 of 50 holder rows.
Quick read
SEA CONSOLIDATION S A OF PANAMA leads the comparable SEC ownership view at 17%.
3 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens SEA CONSOLIDATION S A OF PANAMA's linked filing trail.
Comparable ownership
Top 3
SEA CONSOLIDATION S A OF PANAMA
17%
TSAKOS HOLDINGS FOUNDATION
11%
CastleKnight Master Fund LP
4.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| SEA CONSOLIDATION S A OF PANAMA |
13D/G
NIKOLAS P. TSAKOS
|
17%
Reported 13D/G
· 27 Nov 2024
|
$84,801,778
5,023,802 shares
|
$0 | 27 Nov 2024 |
| TSAKOS HOLDINGS FOUNDATION |
13D/G
|
11%
Reported 13D/G
· 16 May 2025
|
$54,404,291
3,223,003 shares
|
$0 | 16 May 2025 |
| CastleKnight Master Fund LP |
13D/G
|
4.1%
Reported 13D/G
· 31 Dec 2025
|
$30,876,958
1,230,648 shares
|
-$25,612,851 | 31 Dec 2025 |
| Nikolaos Tsakos |
3/4/5
Chief Executive Officer, Director
|
—
mixed-class rows
|
$220,710,821
5,218,802 shares
mixed-class rows
|
+$998,341 | 08 Jul 2026 |
| ACADIAN ASSET MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$36,110,000
1,021,642 shares
|
— | 30 Jun 2026 |
| CastleKnight Management LP |
13F
Company
|
—
denominator unverified
|
$28,281,640
799,594 shares
|
— | 30 Jun 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
Company
|
—
denominator unverified
|
$27,061,976
765,111 shares
|
— | 30 Jun 2026 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
—
denominator unverified
|
$24,561,494
694,416 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$102,766.
Buys
$998,341
Insiders: 1
Sells
$1,101,107
Insiders: 4
Net
-$102,766
Shares: +2,510
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 25,000
Shares: 22,490
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 20,000 | $0 | $1,001,345 | -$1,001,345 |
| 3-6 | 0 | 2,490 | $0 | $99,762 | -$99,762 |
| 6-9 | 25,000 | 0 | $998,341 | $0 | +$998,341 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to TSAKOS ENERGY NAVIGATION LTD. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
Nikolaos Tsakos
Net 12M change
-$102.77K
Full value: -$102,766 · USD · 12-month changeLatest report
12 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Nikolaos Tsakos | Chief Executive Officer, Director | $220,710,821 | +$998,341 | +0.45% | Mixed | 08 Jul 2026 |
| Georgios Saroglou | President and COO, Director | $1,968,400 | -$266,000 | -12% | Filing P/S | 12 Oct 2026 |
| Aristides Athanassios Nicholas Patrinos | Director | $999,696 | Mixed | 18 Mar 2026 | ||
| Theoharrys Evgenios Kosmatos | CFO and CAO | $779,120 | -$530,014 | -40% | Filing P/S | 18 Sep 2026 |
| Efstratios Georgios Arapoglou | Director | $591,850 | Mixed | 18 Mar 2026 | ||
| Michael Jolliffe | Director | $573,160 | Mixed | 18 Mar 2026 | ||
| Efthimios Elias Mitropoulos | Director | $485,940 | Mixed | 18 Mar 2026 | ||
| Karen Jane Purnell | Director | $311,500 | Mixed | 18 Mar 2026 | ||
| Denis Andreas Petropoulos | Director | $311,500 | Mixed | 18 Mar 2026 | ||
| Clio Hatzimichalis | Director | $205,331 | -$205,331 | -50% | Filing P/S | 13 Aug 2026 |
| Vasileios Papageorgiou | Chief Marine Officer | $155,750 | Mixed | 18 Mar 2026 | ||
| Nicholas Francis Tommasino | Director | $115,146 | -$99,762 | -46% | Filing P/S | 14 Jul 2026 |
Recent insider transactions for TSAKOS ENERGY NAVIGATION LTD
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Georgios Saroglou | TEN | Common Shares | Sale | -11.9% | -$266,000 | $53.20 | -5,000 | 37,000 | 12 Oct 2026 | Direct |
| Theoharrys Evgenios Kosmatos | TEN | Common Shares | Sale | -40.5% | -$530,014 | $53.00 | -10,000 | 14,700 | 18 Sep 2026 | Direct |
| Clio Hatzimichalis | TEN | Common Shares | Sale | -50% | -$205,331 | $41.07 | -5,000 | 5,000 | 13 Aug 2026 | Direct |
| Nicholas Francis Tommasino | TEN | Common Shares | Sale | -46.4% | -$99,762 | $40.06 | -2,490 | 2,874 | 14 Jul 2026 | Direct |
| Nikolaos Tsakos | TEN | Common Shares | Gift | 500,000 | 500,000 | 08 Jul 2026 | By spouse | |||
| Nikolaos Tsakos | TEN | Common Shares | Gift | -86% | -500,000 | 81,600 | 08 Jul 2026 | Direct | ||
| Nikolaos Tsakos | TEN | Common Shares | Purchase | 1.38% | $499,355 | $39.95 | 12,500 | 918,500 | 29 Apr 2026 | By Intermed Champion S.A. of Panama |
| Nikolaos Tsakos | TEN | Common Shares | Purchase | 1.4% | $498,986 | $39.92 | 12,500 | 906,000 | 28 Apr 2026 | By Intermed Champion S.A. of Panama |
* marks a reported price that did not pass the local price check.