Mitsubishi Gas Chemical : Management Overview Presentation ( Progress on the Medium-Term Management Plan )

Uniqueness & Presence - Becoming an excellent company with uniqueness and presence

June 5, 2026

TSE Prime M a r k e t

4182

Promoted significant investment in promising Uniqueness & Presence (U&P) businesses

• Completed capacity increase at the Thailand Plant manufacturing substrate materials for IC plastic packaging (BT materials), contributing to early transition to the sales expansion phase

  
  
  

• Currently increasing production capacity for chemicals for use in semiconductor manufacturing (EL chemicals). Investment reaping phase to be delayed until the next medium-term management plan period

  Despite progress on business structure reforms, the bar for achieving medium-term management plan targets has risen

• The bar for achieving medium-term management plan targets has risen, with economic stagnation in Europe and China, intensifying competition, delays in reaping investments, etc.

• In FY2025, ROIC and the operating profit margin declined. Thoroughly implemented management conscious of profit margin and ROIC at the

  individual BMU* level

  
  
  

  * Business Management Unit

  Established the Business Portfolio Resilience Strengthening Task Force headed by the President to drive business structure reform

• Decided to discontinue MXDA project in Europe. Focused on discussions and execution of fundamental earnings improvement measures led by the task force

• Decided to discontinue polycarbonate (PC) production at the Kashima Plant

  
  
  

• Promoted sale of non-business assets and reduction of strategic shareholdings, etc. (FY2025 earnings improvement impact: Approx. 15.0 billion yen)

• Thoroughly implement management that is conscious of profit margin and ROIC through resolute business portfolio transformation

• Steadily capture AI and semiconductor demand by leveraging existing large-scale investments and pave the way for solid growth

ー Medium-Term Management Plan 04

ー Progress on Companywide Numerical Targets and Initiatives 07

ー Progress on Objective 1: Strengthen the Resiliency of Our Business Portfolio 11

ー Objective 2: Promote Sustainability Management -Progress on CarbopathTM 26

ー Capital Policy and Shareholder Returns 29

ー Action to Implement Management Conscious of Cost of Capital and Stock Price 31

ー Initiatives for the Final Year of the Medium-Term Management Plan (FY2026) 39

Mission

Creating value to share with society

Vision

An excellent company with

uniqueness and presence built on chemistry

Value

Conduct Philosophy

As a professional group:

1.

MGC Way

Courage that does not shy away from

change

1. Aim for lofty goals

2. Perseverance in achieving goals

3. Build team spirit with communication

MGC Corporate Behavior Principles

Sustainability Promotion Principle

Vision for MGC in 2030

An excellent company centered on Uniqueness & Presence

Vision for MGC in 2030

New Medium-Term

Management Plan

Planning with a back casting approach

Objective

Strengthen the resiliency of

our business portfolio

Strategy 1

Focus on "Uniqueness & Presence"

Strategy 2

Build new value through innovation

Strategy 3

Restructure businesses requiring intensive management

Objective

Promote sustainability

management

Strategy 1

Accelerate initiatives

for realizing carbon neutrality

Strategy 2

Enhance human capital management

Strategy 3

Promote materiality management

Promotion of strategies to increase corporate value

for "Implement Management Conscious of Cost of Capital and Stock Price"