Okeanis Eco Tankers director files initial Form 3

Okeanis Eco Tankers Corp. filed an initial insider ownership report for Petros Siakotos-Konstantinidis, who is listed as a director of the company.

Accepted by SEC EDGAR 03/18/2026 - 09:33 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Okeanis Eco Tankers Corp. filed an initial insider ownership report for Petros Siakotos-Konstantinidis, who is listed as a director of the company. The filing is a Form 3, which identifies him as a reporting person but does not show any specific share transactions or derivative positions.

FAQ

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

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

The Form 3 filing identifies Petros Siakotos-Konstantinidis as a director and reporting person of Okeanis Eco Tankers Corp. It is an initial insider ownership report and does not list any specific share transactions or derivative positions.

Who is the reporting person in Okeanis Eco Tankers (ECO) latest Form 3?

The reporting person is Petros Siakotos-Konstantinidis. He is classified as a director of Okeanis Eco Tankers Corp. in the Form 3 filing, with no officer role or ten percent owner status indicated in the provided data.

Does the Okeanis Eco Tankers (ECO) Form 3 show any insider share purchases or sales?

No transactions are shown in the Form 3 data. The transaction summary reports zero buys, zero sells, and no derivative exercises, gifts, tax withholdings, or restructurings, indicating only an initial reporting status without trading activity.

Are there any derivative securities reported in the ECO Form 3 filing?

No derivative securities are reported. The derivative summary is empty, and derivativeTransactionCount is zero, meaning the filing does not list any options, warrants, or other derivative positions for Petros Siakotos-Konstantinidis.

Is Petros Siakotos-Konstantinidis a ten percent owner of Okeanis Eco Tankers (ECO)?

Based on the Form 3 data, he is not classified as a ten percent owner. The filing marks him as a director, with the ten percent owner indicator set to zero and no additional role or officer title disclosed.

What does the transaction summary in the ECO Form 3 indicate about insider activity?

The transaction summary indicates no insider trading activity. It shows zero buy and sell counts, zero net buy-sell shares, and a neutral net direction, reflecting that the filing is purely an initial ownership report without trades.

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

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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

OMB APPROVAL

OMB Number:			3235-0104
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hours per response:			0.5

1. Name and Address of Reporting Person^*

Siakotos-Konstantinidis Petros

(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)

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 Petros Siakotos-Konstantinidis dated March 10, 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)