MITSUI E&S : Notice Concerning the Formulation of "MITSUI E&S Rolling Vision 2026"

May 25, 2026

Company Name: Mitsui E&S Corporation Name of Representative: Takeyuki Takahashi, President

Representative Director, and CEO (Securities Code: 7003, TSE Prime Market)

Inquiries: Noriyuki Murata, Executive Officer,

General Manager of Corporate Planning Dep. (TEL: +81-3-3544-3147)

Notice Concerning the Formulation of "MITSUI E&S Rolling Vision 2026"(MTBP)

In August 2024, MITSUI E&S Group (the "Group") announced a Brand-new mid-term business plan, "MITSUI E&S Rolling Vision 2024".

MITSUI E&S Rolling Vision is a medium-term business plan that envisions continued growth by continuing to update targets for the next three years using a rolling method.

Based on the financial results for FY2025 and changes in the business environment, we are pleased to announce that we have formulated the "MITSUI E&S Rolling Vision 2026", whichincludes updated functional strategies (finance and human resources) and business strategies until 2028, three years from now.

In order to achieve sustainable growth toward the Group's vision for 2030, we will make necessary business investments, return profits to shareholders through an appropriate dividend policy, and strive to improve corporate value by balancing the cost of equity and the cost of liabilities.

１．Overview of MITSUI E&S Rolling Vision 2026

2. Growth Scenario for FY2028

Order conditions in our core business segments are expected to remain relatively favorable in the near term. However, uncertainty is increasing due to factors such as heightened geopolitical tensions in the Middle East and inflationary pressures driven by rising resource prices. In light of these conditions, our outlook for fiscal year 2026 incorporates a degree of conservatism.

From fiscal year 2027 onward, we will pursue sustainable growth toward fiscal year 2028 by further strengthening our core businesses and accelerating the expansion of new business domains.

・New Business Development:

We will strengthen the maintenance and inspection-service business using Digital technology.

・Marine Propulsion Systems:

We will expand the engine and peripheral equipment business based on Green technology.

・Logistics & Systems:

We will expand production capacity to meet demand in the U.S. and Asian markets.

For details, please refer to "MITSUI E&S Rolling Vision 2026".

MITSUI E&S Rolling Vision 2026（MTBP）

-Revised concept for our Medium-Term Business Plan-

Table of Contents

▍ Content

page

1. MITSUI E&S Group Management Concept 3

2. Mitsui E&S Rolling Vision 2026 4・５

3. Rolling Vision 2025 Review ６・７

4-1.

Rolling Vision 2026 Functional Strategies (Finance)

８～10

4-2．

Rolling Vision 2026 Business Strategy

11～14

4-3.

Rolling Vision 2026 Functional Strategies(Human Resources)

15～17

1. Initiatives for Sustainability Issues 18

2. Conclusion 19

Note: Abbreviated forms may be used. Rolling Vision 2024:RV24

2

Rolling Vision 2025:RV25 Rolling Vision 2026:RV26

1. MITSUI E&S Group Management Concept

   MITSUI E&S Engineering & Services for Evolution & Sustainability

   Our mission

   Mission

   We build trust and contribute to society through our engineering and services.

   Implement resolute management in core business domains

   Vision in 2030

   In the marine domain, we create a carbon-free society and resolve challenges induced

   by depopulation

   Management Policy

   • Cr

   
   
   eate new value together with customers

   Business perspective

   Conduct business through needs-oriented marketing and innovation in relevant technologies.

   
   
   
   • Seek a sound financial structure and steady profit

     Financial perspective

     Pr

     Manage and operate our group through the timely evaluation of marginal profit and fixed costs.

     
     
     
   • omote human capital management initiatives

   HR perspective

   Challenge solving issues together with society and customers, share the value

   created, and achieve a win-win-win relationship for all.

   Standards of Conduct

   Endeavor to provide simple, unique and practical products and services

   Vision

   Management Policy Standards of Conduct

   Simple

   Unique

   Practical

   3

We always focus on customer-centric products and services that fulfill three kinds of value, develop healthy businesses and bring them into the world to serve society.

1. MITSUI E&S Rolling Vision2026（Concept）

   ▍ Rolling Vision 2026 reflects the latest business environment and sets its sights on new heights.

   【Concept】

   • In FY2025, operating profit significantly exceeded the plan due to a strong project pipeline.

   • In FY2026, we have adopted a conservative outlook, incorporating uncertainties including rising prices and the Middle East situation.

   • In RV26, we will further accelerate growth, outperform RV25, and target a dividend payout ratio of 30% in FY2028.

【Approach to key initiatives】

• Accelerate investment activities to advance business strategy and reflect the results in earnings at an early stage.

• Drive both Marketing and Innovation as twin engines to foster growth in new and core businesses.

  4

  
  
  

• Promote human capital management initiatives.