Major Diana Shipping (NYSE: DSX) holder updates 8% ownership stake

Rhea-AI Filing Summary

Diana Shipping Inc. shareholders led by Anastasios Margaronis report an updated 8.0% ownership stake in the company’s common stock. Through Anamar Investments Inc. and ESX Investments Inc., they beneficially own 10,061,227 shares. Anamar holds 8,665,279 shares (6.9%) and ESX holds 1,395,948 shares (1.1%).

The filing notes that on February 25, 2026, 450,723 shares were granted to Anamar under Diana Shipping’s Equity Incentive Plan. As of March 12, 2026, Diana Shipping had 123,539,757 shares outstanding. The stake is described as held for investment purposes, though the group may buy or sell shares over time.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 3)

DIANA SHIPPING INC.

(Name of Issuer)

Common Stock, $0.01 par value per share

(Title of Class of Securities)

Y2066G104

(CUSIP Number)

Ms. Maria Dede
Pendelis 16, Palaio Faliro
Athens, J3, 175 64
30-210-9470-100

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

02/25/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No. Y2066G104

1

Name of reporting person

Anastasios Margaronis

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

GREECE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 10,061,227.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 10,061,227.00

11

Aggregate amount beneficially owned by each reporting person

10,061,227.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

8 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP No. Y2066G104

1

Name of reporting person

Anamar Investments Inc.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

MARSHALL ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 8,665,279.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 8,665,279.00

11

Aggregate amount beneficially owned by each reporting person

8,665,279.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.9 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

CUSIP No. Y2066G104

1

Name of reporting person

ESX Investments Inc.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

MARSHALL ISLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,395,948.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,395,948.00

11

Aggregate amount beneficially owned by each reporting person

1,395,948.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

1.1 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, $0.01 par value per share
(b)	Name of Issuer: DIANA SHIPPING INC.
(c)	Address of Issuer's Principal Executive Offices: Pendelis 16, Palaio Faliro, Athens, GREECE , 175 64.
Item 1 Comment: This Amendment No. 3 ("Amendment No. 3") to the Schedule 13D filed with the Commission on March 13, 2019 (as amended by Amendment No. 1 to the Schedule 13D filed with the Commission on November 26, 2019, Amendment No. 2 to the Schedule 13D filed with the Commission on December 15, 2020, the "Schedule 13D") relates to shares of common stock, par value $0.01 per share (the "Shares"), of Diana Shipping Inc. (the "Issuer"). This Amendment No. 3 to the Schedule 13D is being filed to report a change in the Reporting Persons ownership percentage in the Issuer. The Schedule 13D is hereby amended and restated as follows.
Item 2.	Identity and Background
(a)	This Amendment No. 3 is being filed on behalf of Anastasios Margaronis ("Margaronis"), a citizen of Greece, Anamar Investments Inc, a Marshall Islands corporation ("Anamar"), and ESX Investments Inc, a Marshall Islands corporation ("ESX"). Margaronis, Anamar, and ESX are collectively referred to as the "Reporting Persons." Margaronis may be deemed to beneficially own all of the issued and outstanding shares of Anamar, as the result of Margaronis' ability to control the vote and disposition of such shares.
(b)	The principal business address for Reporting Persons is Pendelis 16, 175 64 Palaio Faliro, Athens, Greece.
(d)	The Reporting Persons have not, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
(e)	The Reporting Persons have not, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding were not and are not subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violations with respect to such laws.
(f)	The Reporting Person is a citizen of Greece.
Item 3.	Source and Amount of Funds or Other Consideration
	On February 25, 2026, 450,723 Shares were granted to Anamar Investments Inc. pursuant to the Issuer's Equity Incentive Plan. The Shares beneficially owned by the Reporting Persons also include Shares issued by way of warrants, Issuer Equity Incentive Plan grants, stock dividends and Shares acquired in the open market using the Reporting Persons' personal funds.
Item 4.	Purpose of Transaction
	Mr. Margaronis, a member of the Board of Directors of the Issuer, may have influence over the corporate activities of the Issuer, including activities which may relate to items described in subparagraphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Persons acquired the Shares, as described herein, solely for investment purposes. The Reporting Persons, at any time and from time to time, may acquire additional Shares, including in connection with the provision of any services or other strategic transactions with the Issuer, or dispose of any or all of the Shares they own depending upon an ongoing evaluation of their investment in the Shares, prevailing market conditions, other investment opportunities, other investment considerations and/or other factors. The Reporting Persons further reserve the right to act in concert with any other shareholders of the Issuer, or other persons, for a common purpose should they determine to do so, and/or to recommend courses of action to the Issuer's management, the Issuer's Board of Directors, the Issuer's shareholders and others. In addition, the Reporting Persons are in contact with members of the Issuer's management, the members of the Issuer's Board of Directors, other significant shareholders and others regarding alternatives that the Issuer could employ to increase shareholder value.
Item 5.	Interest in Securities of the Issuer
(a)	As of March 12, 2026, the Issuer had 123,539,757 Shares outstanding. The following persons report beneficial ownership of the following Shares.
(b)	Anamar is the record holder of 8,665,279 Shares, representing 6.9% of the Issuer's issued and outstanding Shares. ESX is the record holder of 1,395,948 Shares, representing 1.1% of the Issuer's issued and outstanding Shares. Margaronis indirectly may be deemed to beneficially own 10,061,227 Shares in aggregate, representing 8.0% of the Issuer's issued and outstanding shares, through Anamar and ESX, as the result of his ability to control the vote and disposition of such entities. Anamar has the sole power to vote or direct the vote of 0 Shares and has the shared power to vote or direct the vote of 8,665,279 Shares, representing 6.9% of the Issuer's issued and outstanding Shares. ESX has the sole power to vote or direct the vote of 0 Shares and has the shared power to vote or direct the vote of 1,395,948 Shares, representing 1.1% of the Issuer's issued and outstanding Shares. Margaronis has the sole power to vote or direct the vote of 0 Shares and has the shared power to vote or direct the vote of 10,061,227 Shares, in aggregate, representing 8.0% of the Issuer's issued and outstanding Shares, through Anamar and ESX.
(c)	Except as otherwise disclosed herein, no transactions in the Shares were effected by the Reporting Persons during the past 60 days.
(d)	No other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, any of the Shares beneficially owned by the Reporting Persons.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	The Reporting Persons are not party to any contracts, arrangements or understanding or relationships with respect to the Shares or any other security of the Issuer.
Item 7.	Material to be Filed as Exhibits.
	Exhibit A: Joint Filing Agreement (previously filed)

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.

Anastasios Margaronis

Signature:	/s/ Anastasios Margaronis
Name/Title:	Anastasios Margaronis
Date:	03/13/2026

Anamar Investments Inc.

Signature:	/s/ Anastasios Margaronis
Name/Title:	Anastasios Margaronis, Authorized Representative
Date:	03/13/2026

ESX Investments Inc.

Signature:	/s/ Anastasios Margaronis
Name/Title:	Anastasios Margaronis, Authorized Representative
Date:	03/13/2026

FAQ

What ownership stake in Diana Shipping Inc. (DSX) is reported in this Schedule 13D/A?

The reporting group discloses beneficial ownership of 10,061,227 Diana Shipping shares, representing 8.0% of the company’s outstanding common stock. This ownership is held indirectly through Anamar Investments Inc. and ESX Investments Inc., which together control the reported stake.

How many Diana Shipping (DSX) shares are held by Anamar Investments Inc. and what percentage is this?

Anamar Investments Inc. is the record holder of 8,665,279 Diana Shipping shares, representing 6.9% of the issuer’s outstanding common stock. These shares are part of the broader 10,061,227-share position that the reporting group, led by Anastasios Margaronis, may be deemed to beneficially own.

What is ESX Investments Inc.’s position in Diana Shipping (DSX) according to the filing?

ESX Investments Inc. holds 1,395,948 Diana Shipping common shares, equal to 1.1% of the company’s outstanding stock. These shares, together with those of Anamar Investments Inc., contribute to the 10,061,227 shares that may be beneficially owned by Anastasios Margaronis through control of both entities.

What event triggered this Amendment No. 3 to the Diana Shipping (DSX) Schedule 13D?

The amendment was filed to report a change in the reporting persons’ ownership percentage following new share activity. On February 25, 2026, 450,723 shares were granted to Anamar Investments Inc. under Diana Shipping’s Equity Incentive Plan, affecting the group’s overall beneficial ownership calculation.

How many Diana Shipping (DSX) shares were outstanding as of March 12, 2026?

As of March 12, 2026, Diana Shipping had 123,539,757 common shares outstanding. The reporting group’s 10,061,227 beneficially owned shares therefore represent 8.0% of this total, based on the figures and percentages explicitly stated in the ownership section of the disclosure.

What are the reporting persons’ intentions regarding their Diana Shipping (DSX) holdings?

The reporting persons state they hold their Diana Shipping shares for investment purposes but may buy additional shares or sell existing ones over time. They also note ongoing contact with management, directors, and other significant shareholders about alternatives to increase shareholder value.