[Form 3] Okeanis Eco Tankers Corp. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Okeanis Eco Tankers Corp. director Joshua Arthur Nemser has filed a Form 3, which is an initial statement of beneficial ownership of securities. This establishes his baseline holdings disclosure as a director and, in this excerpt, does not list any specific buy or sell transactions.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Nemser Joshua Arthur

(Last) (First) (Middle)

ETHNARCHOU MAKARIOU AVE. & 2 D.

FALIREOS ST.

(Street)

N. FALIRO 185 47

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Okeanis Eco Tankers Corp. [ ECO ]

3a. Foreign Trading Symbol
[OET]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit List: 24: Power of Attorney of Joshua Arthur Nemser dated March 9, 2026

No securities are beneficially owned.

	/s/ Irene Chaidemenou, Attorney-in-Fact, pursuant to power of attorney attached hereto	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Okeanis Eco Tankers (ECO) Form 3 filing show?

The Form 3 shows that Joshua Arthur Nemser has filed his initial statement of beneficial ownership as a director of Okeanis Eco Tankers Corp. It establishes a regulatory baseline for his holdings disclosure but, in this excerpt, does not detail any specific transactions.

Who is the reporting person in the ECO Form 3 filing?

The reporting person is Joshua Arthur Nemser, identified as a director of Okeanis Eco Tankers Corp. Form 3 filings disclose insiders’ initial ownership when they first become subject to reporting, providing transparency around positions held by company directors and other key insiders.

Does the ECO Form 3 filing report any stock purchases or sales?

The provided Form 3 data reports no buy, sell, acquire, or dispose transactions by Joshua Arthur Nemser. It functions purely as an initial ownership statement in this excerpt, without listing any trades or derivative exercises normally seen in transaction-focused insider filings.

Why is Joshua Arthur Nemser filing a Form 3 for Okeanis Eco Tankers?

Joshua Arthur Nemser files Form 3 because he is a director of Okeanis Eco Tankers Corp. Directors and other insiders must file this form when they first come under reporting requirements, creating a starting record of their beneficial ownership in the company’s securities.

What role does Joshua Arthur Nemser hold at Okeanis Eco Tankers (ECO)?

Joshua Arthur Nemser is identified as a director of Okeanis Eco Tankers Corp. Directors are considered insiders under securities rules and must report their initial and ongoing holdings through forms like Form 3 and subsequent Form 4 or Form 5 filings when transactions occur.