Dynagas LNG holder reports 5.17% ownership stake

Rhea-AI Filing Summary

Dynagas LNG Partners LP has a significant unitholder reported on a Schedule 13G. Thomas W. Herfort, a U.S. citizen, reports beneficial ownership of 1,901,981 common units of Dynagas LNG Partners LP, representing 5.17% of the outstanding class of common units representing limited partnership interests.

Herfort reports sole voting power and sole dispositive power over all 1,901,981 units, with no shared voting or dispositive power. The ownership is reported as passive on a Schedule 13G rather than a control‑oriented Schedule 13D.

Key Figures

Beneficial ownership: 1,901,981 common units Percent of class owned: 5.17% Sole voting power: 1,901,981 units +1 more

4 metrics

Beneficial ownership 1,901,981 common units Common Units Representing Limited Partnership Interests reported by Thomas W. Herfort

Percent of class owned 5.17% Percentage of Dynagas LNG Partners LP common units beneficially owned

Sole voting power 1,901,981 units Units over which Thomas W. Herfort has sole power to vote or direct the vote

Sole dispositive power 1,901,981 units Units over which Thomas W. Herfort has sole power to dispose or direct disposition

Key Terms

Schedule 13G, beneficially owned, sole voting power, dispositive power, +1 more

5 terms

Schedule 13G regulatory

"Thomas W. Herfort’s holdings are reported on a Schedule 13G"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"Item 4 lists the amount beneficially owned as 1901981"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"Sole voting power is reported as 1,901,981.00 units"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

dispositive power financial

"Sole dispositive power is reported as 1,901,981.00 units"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Common Units Representing Limited Partnership Interests financial

"Title of class of securities: Common Units Representing Limited Partnership Interests"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What percentage of Dynagas LNG Partners LP (DLNG) does Thomas W. Herfort own?

Thomas W. Herfort reports beneficial ownership of 5.17% of the outstanding common units of Dynagas LNG Partners LP, according to a Schedule 13G filing describing his holdings and voting power.

How many Dynagas LNG Partners LP (DLNG) common units does Thomas W. Herfort hold?

Thomas W. Herfort reports owning 1,901,981 common units of Dynagas LNG Partners LP. These units represent limited partnership interests and give him reported sole voting and dispositive power.

Does Thomas W. Herfort have sole or shared voting power over his DLNG units?

Thomas W. Herfort reports sole voting power over 1,901,981 units and no shared voting power. He also reports sole dispositive power over the same number of Dynagas LNG Partners LP common units.

What type of security is reported in this Dynagas LNG Partners LP (DLNG) Schedule 13G?

The Schedule 13G reports ownership of Common Units Representing Limited Partnership Interests of Dynagas LNG Partners LP, identified by CUSIP Y2188B108, rather than traditional corporate common stock.

Is Thomas W. Herfort’s stake in Dynagas LNG Partners LP (DLNG) reported as beneficial ownership?

Yes. The filing lists beneficial ownership of 1,901,981 units, equal to 5.17% of the class, with detailed disclosure of his sole voting and dispositive powers over those units.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/13/2026 - 09:05 AM Accepted by SEC EDGAR 08/13/2026 - 09:04 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Dynagas LNG Partners LP

(Name of Issuer)

Common Units Representing Limited Partnership Interests

(Title of Class of Securities)

Y2188B108

(CUSIP Number)

08/04/2026

(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)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): Y2188B108

1

Names of Reporting Persons

THOMAS HERFORT

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:

5	Sole Voting Power 1,901,981.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,901,981.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,901,981.00

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)

5.17 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Dynagas LNG Partners LP
(b)	Address of issuer's principal executive offices: Poseidonos Avenue and Foivis 2 Street, 166-74 Glyfada, Athens, Greece
Item 2.
(a)	Name of person filing: Thomas W. Herfort
(b)	Address or principal business office or, if none, residence: 763 E. Shore Dr. Summerland Key, FL 33042
(c)	Citizenship: United States
(d)	Title of class of securities: Common Units Representing Limited Partnership Interests
(e)	CUSIP Number(s): Y2188B108
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: 1901981
(b)	Percent of class: 5.17 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1901981
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1901981
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

THOMAS HERFORT

Signature:	/s/ THOMAS HERFORT
Name/Title:	Individual
Date:	08/11/2026