Feb. 5, 2026

Business & Products

Lummus and Sumitomo Chemical Announce Commercial Availability of PMMA Chemical Recycling Technology
Advanced technology enables closed loop PMMA and lower emissions for producers

Feb. 3, 2026

IR

Announcement of Extraordinary Loss in Non-consolidated Financial Statements

Feb. 3, 2026

IR

Notice Concerning Share of Loss of Investments Accounted for Using the Equity Method

Feb. 3, 2026

IR

Sumitomo Chemical Announces Revisions to Its Financial Forecast and Projected Dividend for the Full Year Ending March 31, 2026

Feb. 3, 2026

IR

Summary of Consolidated Financial Results for Third Quarter Fiscal Year 2025

Feb. 2, 2026

Announcements

Sumitomo Chemical to Release New Graphic and Concept Video "Quiet Steps. Giant Leaps."

Jan. 26, 2026

Announcements

Apology and Request Regarding Email Inquiry Reception Issues

Jan. 22, 2026

R&D

Sumitomo Chemical Receives Clarivate Top 100 Global Innovators 2026 Award
Selected as One of the World's Top 100 Innovative Companies and Institutions for Five Consecutive Years

Jan. 21, 2026

Announcements

Sumitomo Chemical to Participate in the 39^th DVN Munich Lighting Workshop, A Venue for Sharing Cutting-Edge Innovations in the Field of Automotive Lighting

Jan. 16, 2026

IR

(Progress of Disclosed Matters) Notice Regarding Determination of Share Exchange Ratio in Simplified Share Exchange between Sumitomo Chemical Co., Ltd. and Tanaka Chemical Corporation

Jan. 8, 2026

Announcements

Sumitomo Chemical to Attend SPIE Photonics West 2026 to Exhibit its Compound Semiconductor Products and Present an Invited Talk

Jan. 5, 2026

Other

Summary of the New Year's Message from President Nobuaki Mito

Dec. 24, 2025

Business & Products

Mitsui Chemicals, Idemitsu Kosan, and Sumitomo Chemical Concluded a Definitive Agreement for the Business Integration of Sumitomo Chemical's PP and LLDPE Businesses into Prime Polymer

Dec. 24, 2025

IR

Conclusion of Agreement on Integration of Domestic Polyolefin Business (PP, LLDPE) through Company Split (Simplified Absorption-type Split)

Nov. 20, 2025

Business & Products

Sumitomo Chemical Reaches Agreement to Acquire Taiwanese Semiconductor Process Chemicals Company
Aims for Further Business Expansion through Acquiring New Bases in Taiwan and the US

Nov. 13, 2025

Business & Products

Sumitomo Chemical to Restructure Lithium-Ion Secondary Battery Separator Business

Nov. 4, 2025

IR

Notice Concerning Share of Loss of Investments Accounted for Using the Equity Method and Finance Income (Foreign Exchange Gain)

Nov. 4, 2025

IR

Sumitomo Chemical Announces Variances between its Financial Forecast and Actual Results for the Second Quarter (Interim Period) of the Full Year Ending March 31, 2026, and Revisions to its Financial Forecast for the Full Year Ending March 31, 2026

Nov. 4, 2025

IR

Summary of Consolidated Financial Results for Second Quarter (Interim Period) Fiscal Year 2025

Oct. 31, 2025

IR

Integrated Report 2025 and Sustainabillity Report 2025 have been published