Okeanis Eco Tankers (ECO) CCO discloses direct holding of 11,200 shares

Rhea-AI Filing Summary

Okeanis Eco Tankers Corp. executive Christopher Vangeli Papaioannou, the Chief Commercial Officer, filed an initial ownership report showing his direct holding of 11,200 shares of common stock. This Form 3 does not record any new buy or sell transaction; it simply discloses his existing equity stake.

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^*

Papaioannou Christopher Vangeli

(Last) (First) (Middle)

ETHNARCHOU MAKARIOU AVE. & 2 D.

FALIREOS ST.

(Street)

N. FALIRO 185 47

(City) (State) (Zip)

GREECE

(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)

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

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)
Shares of Common Stock, par value $0.001 per share	11,200	D

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 Christopher Vangeli Papaioannou dated March 11, 2026

	/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 Chief Commercial Officer Christopher Vangeli Papaioannou directly owns 11,200 common shares. It is an initial ownership report and does not reflect any new purchase, sale, or option exercise, only his existing equity position in Okeanis Eco Tankers.

How many Okeanis Eco Tankers (ECO) shares does the CCO report owning?

The Chief Commercial Officer reports direct ownership of 11,200 shares of common stock. This figure represents his total direct holdings following the reported position and is not tied to a specific buy or sell transaction in this filing.

Does this Okeanis Eco Tankers (ECO) Form 3 include any insider buying or selling?

No, the Form 3 does not include insider buying or selling. It classifies the entry as a holding, with no transaction code or trade price, indicating this is a disclosure of existing ownership rather than a new market transaction.

Who is the insider named in the Okeanis Eco Tankers (ECO) Form 3?

The insider is Christopher Vangeli Papaioannou, serving as Chief Commercial Officer. He is identified as an officer of Okeanis Eco Tankers and is reporting his existing ownership of common shares through this initial Form 3 filing.

Are there any derivative securities reported in this Okeanis Eco Tankers (ECO) Form 3?

No derivative securities are reported in this Form 3. The filing lists only common stock holdings, and the derivative section is empty, indicating no options, warrants, or other derivative positions are disclosed for the reporting officer here.