ADDENDUM NO 17 To MASTER MANAGEMENT AGREEMENT dated February 7th, 2008 between Euroseas Ltd and Eurobulk Ltd

Exhibit 4.16

ADDENDUM NO 17

To

MASTER MANAGEMENT AGREEMENT dated February 7^th, 2008 between Euroseas Ltd and Eurobulk Ltd

This Addendum is made as of 10^th February 2026 between Euroseas Ltd. (the “Company”), in its own capacity and as agent for each of its vessel owning subsidiaries identified in Shedule A hereto together with any additional subsidiaries that may acquire vessels in the future (the “Subsidiaries”) and Eurobulk Ltd. (the “Manager”).

REMUNERATION

Fees payable to Eurobulk were adjusted based in reported inflation for Greece (Dec 24 - Dec 25). Daily management fees were rounded at Euro 875/day/vessel while the executive services fees were rounded at US$2,360,000 per annum. Both with effect of 1^st January 2026.

IN WITNESS WHEREOF, the parties have executed this Addendum to the Management Agreement as of the date first written above.

Euroseas Ltd.

By:__/s/ ▇▇▇▇▇▇▇▇▇▇ ▇. Pittas__

Name: ▇▇▇▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇

Title: Chairman of the Board,

President, CEO

EuroBulk Ltd.

By:__/s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇__

Name: ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇

Title: Director

Schedule A

to addendum no 17 to

Master Management Agreement dated February 7^th , 2008

Antwerp Shipping Ltd, ▇▇▇▇▇▇▇▇ Islands-m/v Synergy Antwerp

Busan Shipping Ltd, ▇▇▇▇▇▇▇▇ Islands-m/v Synergy Busan

Oakland Shipping Ltd, Marshal\ Islands-m/v Synergy Oakland

Keelung Shipping Ltd, ▇▇▇▇▇▇▇▇ Islands-m/v Synergy Keelung

▇▇▇▇▇▇ Shipping Limited, ▇▇▇▇▇▇▇▇ Islands - m/v ΕΜ Astoria

Noumea Shipping Limited, Liberia - m/v Evrid iki G

▇▇▇▇▇▇ Maritime Ltd, Liberia -m/v ▇▇▇▇▇▇

Corfu Navigation Ltd - m/v ΕΜ Corfu

Kea Shipowners Ltd, Liberia-m/v ▇▇ ▇▇▇

Spetses Shipowners Ltd, Liberia-m/v Em Spetses

Hydra Shipowners Ltd, Liberia-m/v Em Hydra

▇▇▇▇▇▇ Maritime Ltd., Marshal\ Islands- m/v ▇▇▇▇▇▇ (Hul l Νο. 4201 )

Terataki Shipping Ltd., ▇▇▇▇▇▇▇▇ lslands - m/v Terataki (Hull Νο. 4202)

Marcos Shipping Ltd, ▇▇▇▇▇▇▇▇ Islands - ▇▇▇▇▇▇ ▇

▇▇▇▇▇▇▇▇ Shipping Ltd, ▇▇▇▇▇▇▇▇ lslands - m/v ▇▇▇▇▇▇▇▇ ▇

▇▇▇▇ Shipping Ltd, Marshal\ Islands - m/v ▇▇▇▇ Ρ

Tender Soul Shipping Ltd, ▇▇▇▇▇▇▇▇ lslands - m/v Tender Soul (Hull Νο. 4236)

Leonidas Shipping Ltd, Marshal Islands - m/v ▇▇▇▇▇▇▇▇ ▇ (▇▇▇▇ Νο. 4237)

▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇ Ltd, Liberia - m/v ▇▇▇▇▇▇ (▇▇▇▇ Νο. 4248)

▇▇▇▇▇▇▇▇▇ Shipping Ltd, Liberia - m/v ▇▇▇▇▇▇▇▇▇ ▇ (▇▇▇▇ Νο. 4249)

Pepi Shipping Ltd, Liberia - m/v Pepi Star (Hull Νο. 4250)

Dear Panel Shipping Ltd, Liberia -m/v Dear Panel (Hull Νο. 4251)

Symeon Shipping Ltd, Liberia - m/v Symeon Ρ (Hull Νο. 4252)

▇▇▇▇▇ Shipowners Ltd, ▇▇▇▇▇▇▇▇ lslands - m/v ▇▇▇▇▇ (▇▇▇▇ Νο. YZJ2024- 1711)

Nikitas Shipping Ltd, ▇▇▇▇▇▇▇▇ Islands - m/v Nikitas G (Hull Νο. YZJ2024-1 712)

Thrylos Shipping Ltd, Liberia - m/v Thrylos (Hull Νο. YZJ2024-1 768)

Socrates Shipping Ltd, Liberia - m/v Socrates Ch (Hull Νο. YZJ2024- l 769)

Danai Shipowners Ltd, Liberia - m/v Danai (Hull Νο. HC438)

Neni Shipping Ltd, Liberia -Neni (Hull Νο. HC439)

Last update January 10, 2026