EUROSEAS (ESEA) director Tamvakakis reports 11,842 shares and 2,100 unvested awards

Rhea-AI Filing Summary

EUROSEAS LTD. director Apostolos Tamvakakis filed an initial ownership report showing holdings of 11,842 shares of common stock. This position includes 2,100 unvested incentive stock awards, with 700 shares scheduled to vest on July 1, 2026, 700 on November 13, 2026, and 700 on July 1, 2027.

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^*

Tamvakakis Apostolos

(Last) (First) (Middle)

4 MESSOGEIOU & EVROPIS STREET

(Street)

MAROUSSI 151 24

(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
EUROSEAS LTD. [ ESEA ]

3a. Foreign Trading Symbol

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)
Common stock(1)	11,842	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:

1. Includes 2,100 of unvested incentive stock awards, of which 700 will vest on July 1, 2026, 700 shares will vest on November 13, 2026 and 700 shares will vest on July 1, 2027.

	Apostolos Tamvakakis	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 EUROSEAS LTD. (ESEA) Form 3 for Apostolos Tamvakakis show?

The Form 3 shows that director Apostolos Tamvakakis initially reports ownership of 11,842 common shares of EUROSEAS LTD. This includes both vested stock and 2,100 unvested incentive stock awards subject to a future vesting schedule.

How many EUROSEAS LTD. (ESEA) shares does Apostolos Tamvakakis beneficially own?

Apostolos Tamvakakis reports beneficial ownership of 11,842 shares of common stock. This total reflects his direct holdings and includes unvested incentive stock awards that will vest over time, indicating his current equity stake as a company director.

What unvested incentive stock awards are reported in ESEA’s Form 3?

The filing discloses 2,100 unvested incentive stock awards for Apostolos Tamvakakis. These are scheduled to vest in three equal blocks of 700 shares each on July 1, 2026, November 13, 2026, and July 1, 2027, subject to applicable conditions.

Is EUROSEAS LTD. (ESEA) Form 3 a buy or sell transaction?

This Form 3 is not a buy or sell report. It is an initial statement of beneficial ownership, listing the number of EUROSEAS LTD. shares held by director Apostolos Tamvakakis when he became subject to reporting requirements.

Does the ESEA Form 3 include derivative or option holdings for Tamvakakis?

The Form 3 data provided shows no separate derivative or option positions. It reports only common stock holdings, including 2,100 unvested incentive stock awards that vest in three future installments through July 1, 2027.

What is the vesting schedule for Tamvakakis’s ESEA incentive stock awards?

The filing states that 2,100 incentive stock awards vest in three tranches: 700 shares on July 1, 2026, 700 shares on November 13, 2026, and 700 shares on July 1, 2027, assuming vesting conditions are met.