CastleKnight group discloses 4.1% Tsakos Energy (NYSE: TEN) stake
Filing Impact
Filing Sentiment
Form Type
SCHEDULE 13G/A
Tsakos Energy Navigation Ltd. received an amended Schedule 13G filing showing that CastleKnight Master Fund LP, related CastleKnight and Weitman entities, and Aaron Weitman together beneficially own 1,230,648 common shares, or 4.1% of the class, as of 12/31/2025.
The filing states these holders have shared voting and dispositive power over all 1,230,648 shares and no sole power. They certify the shares were not acquired to change or influence control of Tsakos Energy Navigation, and that ownership represents 5 percent or less of the class.
Positive
- None.
Negative
- None.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13G
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UNDER THE SECURITIES EXCHANGE ACT OF 1934
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(Amendment No. 1)
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TSAKOS ENERGY NAVIGATION LTD (Name of Issuer) |
Common Shares, par value $5.00 per share (Title of Class of Securities) |
G9108L173 (CUSIP Number) |
12/31/2025 (Date of Event Which Requires Filing of this Statement) |
| Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |
| Rule 13d-1(b) |
| Rule 13d-1(c) |
| Rule 13d-1(d) |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
CastleKnight Master Fund LP | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
CAYMAN ISLANDS
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
PN |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
CastleKnight Fund GP LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
CastleKnight Management LP | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA, PN |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
CastleKnight Management GP LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
DELAWARE
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
Weitman Capital LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
NEW JERSEY
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13G
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| CUSIP No. | G9108L173 |
| 1 | Names of Reporting Persons
Aaron Weitman | ||||||||
| 2 | Check the appropriate box if a member of a Group (see instructions)
(a)
(b) | ||||||||
| 3 | Sec Use Only | ||||||||
| 4 | Citizenship or Place of Organization
UNITED STATES
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
1,230,648.00 | ||||||||
| 10 | Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
| ||||||||
| 11 | Percent of class represented by amount in row (9)
4.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
HC, IN |
SCHEDULE 13G
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| Item 1. | ||
| (a) | Name of issuer:
TSAKOS ENERGY NAVIGATION LTD | |
| (b) | Address of issuer's principal executive offices:
367 Syngrou Avenue, 175 64 P., Faliro, Athens, Greece | |
| Item 2. | ||
| (a) | Name of person filing:
CastleKnight Master Fund LP
CastleKnight Fund GP LLC
CastleKnight Management LP
CastleKnight Management GP LLC
Weitman Capital LLC
Aaron Weitman | |
| (b) | Address or principal business office or, if none, residence:
CastleKnight Master Fund LP
Maples Corporate Services Limited
P.O. Box 309
Ugland House
Grand Cayman KY1-1104
Cayman Islands
CastleKnight Fund GP LLC
888 Seventh Avenue, 24th Floor
New York, New York 10019
United States of America
CastleKnight Management LP
888 Seventh Avenue, 24th Floor
New York, New York 10019
United States of America
CastleKnight Management GP LLC
888 Seventh Avenue, 24th Floor
New York, New York 10019
United States of America
Weitman Capital LLC
c/o Aaron Weitman
c/o CastleKnight Management LP
888 Seventh Avenue, 24th Floor
New York, New York 10019
United States of America
Aaron Weitman
c/o CastleKnight Management LP
888 Seventh Avenue, 24th Floor
New York, New York 10019
United States of America | |
| (c) | Citizenship:
CastleKnight Master Fund LP - Cayman Islands
CastleKnight Fund GP LLC - Delaware
CastleKnight Management LP - Delaware
CastleKnight Management GP LLC - Delaware
Weitman Capital LLC - New Jersey
Aaron Weitman - United States | |
| (d) | Title of class of securities:
Common Shares, par value $5.00 per share | |
| (e) | CUSIP No.:
G9108L173 | |
| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: | |
| (a) | Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o); | |
| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c); | |
| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c); | |
| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8); | |
| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E); | |
| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F); | |
| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G); | |
| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); | |
| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); | |
| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution: | |
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). | |
| Item 4. | Ownership | |
| (a) | Amount beneficially owned:
CastleKnight Master Fund LP - 1,230,648
CastleKnight Fund GP LLC - 1,230,648
CastleKnight Management LP - 1,230,648
CastleKnight Management GP LLC - 1,230,648
Weitman Capital LLC - 1,230,648
Aaron Weitman - 1,230,648 | |
| (b) | Percent of class:
CastleKnight Master Fund LP - 4.1%
CastleKnight Fund GP LLC - 4.1%
CastleKnight Management LP - 4.1%
CastleKnight Management GP LLC - 4.1%
Weitman Capital LLC - 4.1%
Aaron Weitman - 4.1% | |
| (c) | Number of shares as to which the person has:
| |
| (i) Sole power to vote or to direct the vote:
CastleKnight Master Fund LP - 0
CastleKnight Fund GP LLC - 0
CastleKnight Management LP - 0
CastleKnight Management GP LLC - 0
Weitman Capital LLC - 0
Aaron Weitman - 0 | ||
| (ii) Shared power to vote or to direct the vote:
CastleKnight Master Fund LP - 1,230,648
CastleKnight Fund GP LLC - 1,230,648
CastleKnight Management LP - 1,230,648
CastleKnight Management GP LLC - 1,230,648
Weitman Capital LLC - 1,230,648
Aaron Weitman - 1,230,648 | ||
| (iii) Sole power to dispose or to direct the disposition of:
CastleKnight Master Fund LP - 0
CastleKnight Fund GP LLC - 0
CastleKnight Management LP - 0
CastleKnight Management GP LLC - 0
Weitman Capital LLC - 0
Aaron Weitman - 0 | ||
| (iv) Shared power to dispose or to direct the disposition of:
CastleKnight Master Fund LP - 1,230,648
CastleKnight Fund GP LLC - 1,230,648
CastleKnight Management LP - 1,230,648
CastleKnight Management GP LLC - 1,230,648
Weitman Capital LLC - 1,230,648
Aaron Weitman - 1,230,648 | ||
| Item 5. | Ownership of 5 Percent or Less of a Class. | |
Ownership of 5 percent or less of a class
| ||
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. | |
Not Applicable
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| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. | |
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
Please see Exhibit B attached hereto. | ||
| Item 8. | Identification and Classification of Members of the Group. | |
Not Applicable
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| Item 9. | Notice of Dissolution of Group. | |
Not Applicable
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| Item 10. | Certifications: |
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. |
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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Exhibit Information
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Material to be Filed as Exhibit:
[Exhibit A - Joint Filing Agreement]
[Exhibit B - Control Person Identification] |
FAQ
What stake does CastleKnight report in Tsakos Energy Navigation (TEN)?
CastleKnight and related Weitman entities report beneficial ownership of 1,230,648 common shares of Tsakos Energy Navigation, representing 4.1% of the outstanding class as of December 31, 2025, according to this amended Schedule 13G filing.
Who are the reporting persons in this Tsakos Energy Navigation (TEN) Schedule 13G/A?
The reporting persons are CastleKnight Master Fund LP, CastleKnight Fund GP LLC, CastleKnight Management LP, CastleKnight Management GP LLC, Weitman Capital LLC, and Aaron Weitman. Each reports beneficial ownership of the same 1,230,648 Tsakos common shares at a 4.1% stake.
How much voting power do the CastleKnight and Weitman entities have in TEN shares?
The CastleKnight and Weitman reporting persons disclose shared power to vote or direct the vote over 1,230,648 Tsakos common shares and no sole voting power. They likewise report shared dispositive power and no sole dispositive power over the same shares.
Is the CastleKnight position in Tsakos Energy Navigation (TEN) passive or activist?
The group certifies the securities were not acquired and are not held for the purpose of changing or influencing control of Tsakos Energy Navigation. They state the holdings are not in connection with any control-related transaction, aside from activities tied to certain nomination rules.
What class of Tsakos Energy Navigation securities is covered in this Schedule 13G/A?
The filing covers Common Shares of Tsakos Energy Navigation Ltd. with a $5.00 par value per share, identified by CUSIP G9108L173. The reported beneficial ownership and percentage relate specifically to this class of common shares.
When is the ownership date referenced in this Tsakos Energy (TEN) Schedule 13G/A?
The Schedule 13G/A uses an ownership reference date of December 31, 2025. As of that date, the CastleKnight and Weitman reporting persons state they beneficially owned 1,230,648 Tsakos common shares, amounting to 4.1% of the outstanding class.