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Overview

Chemicals

Sumitomo Seika Chemicals Company,Limited.

Sumitomo Seika Chemicals is a specialty chemicals company operating in two core segments: Superabsorbent Polymers (SAP) and Functional Materials. The SAP segment manufactures and sells superabsorbent resins used in sanitary materials such as disposable diapers and feminine hygiene products, as well as industrial applications including cable water-blocking materials and pet sheets. The Functional Materials segment encompasses water-soluble polymers, emulsions, fine particle polymers, pharmaceutical products, electronics gases, standard gases, medical gases, industrial chemicals, and the design and manufacture of gas generation equipment (PSA systems) for oxygen, nitrogen, and hydrogen.

Market Cap

¥93.3B

US$595M

¥102B

US$652M

Stock¥1,448▼-0.28%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

4.7

LTM EV/EBIT

6.6

LTM PER

9.4

LTM PBR

0.9

Stock vs TOPIX (1Y, base=100)vs TOPIX ▲+28.0%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Nov 12, 25Activist shareholder stock acquisition

2Mar 4, 26Market-wide: Adjustment on rate hike concerns

3Aug 6, 26Dividend policy change (DOE introduction) & FY3/27 dividend forecast raised to ¥70 (from ¥48)

MC → EV Bridge

AI Briefing

Generating insights…

Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

81%

19%

EquityD/E 0.23xDebt

Liquidity vs Debt 5Y (¥B)▼ Net Debt

CashInv. Sec.Debt

Shareholders

Top 10 hold 54.7%

as of 2026-03-31 · Source: Annual Securities Report

SUMITOMO CHEMICAL COMPANY,LIMITED

32.43%

The Master Trust Bank of Japan, Ltd. (Trust Account)

7.50%

THE CHASE MANHATTAN BANK, N.A. LONDON SECS LENDING OMNIBUS ACCOUNT (Standing Proxy: Mizuho Bank, Ltd., Settlement Processing Department)

2.52%

Custody Bank of Japan, Ltd. (Trust Account)

2.46%

Sumitomo Life Insurance Company

2.40%

Sumitomo Mitsui Banking Corporation

1.67%

TAKI CHEMICAL CO.,LTD.

1.60%

RE FUND 107-CLIENT AC (Standing Proxy: Citibank, N.A., Tokyo Branch)

1.53%

Sumitomo Seika Chemicals Company,Limited. Employee Stock Ownership Association

1.45%

JP MORGAN CHASE BANK 385642 (Standing Proxy: Mizuho Bank, Ltd.)

1.15%

Management

9 officers

Yoshiaki ODA

Representative Director, President and Executive Officer

Apr 1986 Joined Sumitomo Chemical Co., Ltd. Apr 2010 General Manager, Technology and Business Planning Division (Technology and R&D), Sumitomo Chemical Co., Ltd. Jun 2012 General Manager, Petrochemicals Research Laboratory and Resin Development Center, Sumitomo Chemical Co., Ltd. Apr 2013 Officer (Riji), General Manager, Petrochemicals Research Laboratory and Resin Development Center, Sumitomo Chemical Co., Ltd. Apr 2015 Executive Officer, Technology and Business Planning Division (Technology and R&D); in charge of Tsukuba Research Laboratory and Advanced Materials Exploration Research Laboratory; General Manager, Tsukuba Research Laboratory and Advanced Materials Exploration Research Laboratory, Sumitomo Chemical Co., Ltd. Apr 2018 Managing Executive Officer, in charge of Technology and Business Planning Division, Industrialization Technology Research Laboratory and Advanced Materials Development Laboratory, Sumitomo Chemical Co., Ltd. Apr 2021 Advisor, Sumitomo Chemical Co., Ltd.; Advisor, Sumika Chem-Analysis Service, Ltd. Jun 2021 Representative Director, President, Sumika Chem-Analysis Service, Ltd. Jun 2023 Representative Director, President and Executive Officer, Sumika Chem-Analysis Service, Ltd. Apr 2025 Representative Director, President and Executive Officer, Sumitomo Chemical Co., Ltd.; in charge of Legal, Responsible Care and Quality Assurance Divisions Jun 2025 Representative Director, President and Executive Officer, Sumitomo Seika Chemicals Co., Ltd. (current)

1961-03-30

Kenichiro MACHIDA

Representative Director, Managing Executive Officer

Apr 1985 Joined Sumitomo Chemical Co., Ltd. Jun 2009 General Manager, Internal Control Promotion Department, Sumitomo Chemical Co., Ltd. Apr 2010 General Manager, Internal Control and Audit Department, Sumitomo Chemical Co., Ltd. Mar 2012 General Manager, Technology and Business Planning Division (Related Businesses) and General Manager, Technology and Business Planning Division (China Strategy), Sumitomo Chemical Co., Ltd. Oct 2012 General Manager, Technology and Business Planning Division (Related Businesses) and General Manager, China Business Office, Sumitomo Chemical Co., Ltd. Jun 2014 General Manager, Secretariat Department, Sumitomo Chemical Co., Ltd. Apr 2015 General Manager, General Affairs and Legal Office (Secretariat) and General Manager, General Affairs and Legal Office (External Relations), Sumitomo Chemical Co., Ltd. Apr 2016 Deputy Plant Manager, Ehime Works, and General Manager, General Affairs Department, Oe Works, Sumitomo Chemical Co., Ltd. Apr 2017 General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2017 Officer (Riji), General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2018 Director, Executive Officer, in charge of IT, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2020 Director, Executive Officer, in charge of Accounting Planning and IT, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jan 2021 Director, Executive Officer, in charge of Accounting Planning, IT and Business Reform Promotion, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2021 Director, Managing Executive Officer, in charge of Accounting Planning, IT and Business Reform Promotion, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jan 2024 Director, Managing Executive Officer, in charge of Corporate Communications, Accounting Planning, IT and Business Reform Promotion, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. May 2025 Representative Director, Managing Executive Officer, in charge of Corporate Communications, Accounting Planning, IT and Business Reform Promotion, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2025 Representative Director, Managing Executive Officer, in charge of Corporate Administration, General Manager, Accounting Planning Office and Sustainability Promotion Office, Sumitomo Seika Chemicals Co., Ltd. Dec 2025 Representative Director, Managing Executive Officer, in charge of Corporate Administration, General Manager, Accounting Planning Office, Sumitomo Seika Chemicals Co., Ltd. (current)

1963-01-29

Takehiro HIGASHIYA

Director, Managing Executive Officer

May 1993 Joined Sumitomo Seika Chemicals Co., Ltd. Apr 2008 General Manager, Super Absorbent Polymer Business Division, Sumitomo Seika Chemicals Co., Ltd. Feb 2010 Managing Director, Sumitomo Seika Asia Pacific Pte. Ltd. Jun 2010 Managing Director, Sumitomo Seika Singapore Pte. Ltd. and Managing Director, Sumitomo Seika Asia Pacific Pte. Ltd. May 2015 General Manager, Sales Department, Super Absorbent Polymer Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2015 Officer (Riji), General Manager, Super Absorbent Polymer Business Division and General Manager, Sales Department, Sumitomo Seika Chemicals Co., Ltd. Jun 2016 Executive Officer, General Manager, Super Absorbent Polymer Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2020 Director, Managing Executive Officer, in charge of Super Absorbent Polymer Division, General Manager, Super Absorbent Polymer Business Division, Sumitomo Seika Chemicals Co., Ltd. Mar 2021 Director, Managing Executive Officer, in charge of Super Absorbent Polymer Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2024 Director, Senior Managing Executive Officer, in charge of Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2025 Director, Managing Executive Officer, in charge of Business Division, General Manager, Functional Materials Business Division, Sumitomo Seika Chemicals Co., Ltd. Apr 2026 Director, Managing Executive Officer, in charge of Business Division, Sumitomo Seika Chemicals Co., Ltd. (current)

1961-04-25

Kenji NAKAMURA

Director, Executive Officer

Apr 1994 Joined Sumitomo Seika Chemicals Co., Ltd. Jun 2014 General Manager, Super Absorbent Polymer Production Department and Section Manager, Super Absorbent Polymer Section, Himeji Works, Sumitomo Seika Chemicals Co., Ltd. Oct 2015 General Manager, Super Absorbent Polymer Production Department, Himeji Works, Sumitomo Seika Chemicals Co., Ltd. Oct 2016 General Manager, Technology Office (Himeji) and General Manager, Himeji Technology Department, Himeji Works, Sumitomo Seika Chemicals Co., Ltd. Jun 2020 General Manager, Production Technology Department, Himeji Works and General Manager, Production Technology Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2022 Officer (Riji), Plant Manager, Himeji Works, Sumitomo Seika Chemicals Co., Ltd. Jun 2024 Executive Officer, in charge of Manufacturing Division, Plant Manager, Himeji Works and General Manager, Production Control Office, Sumitomo Seika Chemicals Co., Ltd. May 2025 Executive Officer, in charge of Manufacturing Division, AK Project, Plant Manager, Himeji Works and General Manager, Production Control Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2025 Director, Executive Officer, in charge of Manufacturing Division, AK Project, Plant Manager, Himeji Works and General Manager, Production Control Office, Sumitomo Seika Chemicals Co., Ltd. Apr 2026 Director, Executive Officer, in charge of Manufacturing Division and AK Project, General Manager, Production Control Office, Sumitomo Seika Chemicals Co., Ltd. (current)

1969-10-30

Noriaki TAKESHITA

Director

Apr 1982 Joined Sumitomo Chemical Co., Ltd. Dec 2005 Seconded to Rabigh Refining and Petrochemical Company Apr 2010 Executive Officer, engaged in operations at Rabigh Refining and Petrochemical Company, Sumitomo Chemical Co., Ltd. Apr 2013 Managing Executive Officer, in charge of Rabigh Planning Office and Petrochemicals Business Office, Sumitomo Chemical Co., Ltd. Jun 2017 Representative Director, Managing Executive Officer, in charge of Rabigh Planning and Petrochemicals Division, Sumitomo Chemical Co., Ltd. Apr 2018 Representative Director, Senior Managing Executive Officer, in charge of Rabigh Planning and Petrochemicals Division, Sumitomo Chemical Co., Ltd. Apr 2023 Director, Senior Managing Executive Officer, in charge of Corporate Planning and IT Promotion, Sumitomo Chemical Co., Ltd. Jun 2023 Senior Managing Executive Officer, in charge of Corporate Planning and IT Promotion, Sumitomo Chemical Co., Ltd. Jun 2024 Director, Senior Managing Executive Officer, in charge of Corporate Planning and IT Promotion, General Manager, Corporate Planning Office, Sumitomo Chemical Co., Ltd. Apr 2025 Director, Sumitomo Chemical Co., Ltd. Jun 2025 Advisor, Sumitomo Chemical Co., Ltd. Director, Inabata & Co., Ltd. (current) Director (non-executive), Sumitomo Seika Chemicals Co., Ltd. (current)

1958-07-23

Akiko YOSHIMOTO

Director

Apr 1985 Joined Ministry of Labour (now Ministry of Health, Labour and Welfare) Jul 2013 Vice Governor, Aichi Prefecture Jul 2015 Senior Counselor, Minister's Secretariat (Industrial Accidents), Ministry of Health, Labour and Welfare Oct 2015 Senior Counselor, Minister's Secretariat (Equal Employment, Child and Family Policy, Measures for Declining Birthrate), Ministry of Health, Labour and Welfare Jul 2017 Senior Counselor, Secretariat of the Central Labour Relations Commission (Coordination, Planning and Public Relations), Ministry of Health, Labour and Welfare Jul 2018 Director-General for Human Resources Development, Ministry of Health, Labour and Welfare Jul 2019 Secretary General, Secretariat of the Central Labour Relations Commission, Ministry of Health, Labour and Welfare Oct 2021 Retired from Ministry of Health, Labour and Welfare Feb 2022 Senior Advisor, Boston Consulting Group (current) Jun 2022 Outside Director, TOENEC Corporation (current) Jun 2023 Outside Audit & Supervisory Board Member, Takara Holdings Inc. (current) Jun 2024 Outside Director, Sumitomo Seika Chemicals Co., Ltd. (current)

1963-02-04

Satoshi YAMAGUCHI

Director, Audit and Supervisory Committee Member (Full-time)

Apr 1984 Joined Daihatsu Motor Co., Ltd. Mar 1993 Joined Procter & Gamble Far East, Inc. (now P&G Japan LLC) Aug 2001 Joined Nihon Ryutsu Sangyo Co., Ltd. Dec 2002 Joined Sumitomo Seika Chemicals Co., Ltd. Jun 2011 General Manager, Super Absorbent Polymer Research Laboratory, Sumitomo Seika Chemicals Co., Ltd. Jun 2013 General Manager, Functional Chemicals Research Laboratory, Sumitomo Seika Chemicals Co., Ltd. Jun 2016 Officer (Riji), General Manager, Functional Chemicals Research Laboratory and General Manager, Development Department, Functional Chemicals Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2017 Executive Officer, Deputy General Manager, Functional Chemicals Business Division and General Manager, Development Department, Sumitomo Seika Chemicals Co., Ltd. Jan 2018 Executive Officer, Deputy General Manager, Functional Chemicals Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2019 Executive Officer, General Manager, Functional Chemicals Business Division, Sumitomo Seika Chemicals Co., Ltd. Jun 2020 Executive Officer, in charge of RC, General Manager, RC Office, Sumitomo Seika Chemicals Co., Ltd. Dec 2021 Executive Officer, in charge of Sustainability Promotion and RC, General Manager, Sustainability Promotion Office and RC Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2022 Executive Officer, in charge of Sustainability Promotion, General Manager, Sustainability Promotion Office, Sumitomo Seika Chemicals Co., Ltd. Jun 2025 Director, Audit and Supervisory Committee Member (Full-time), Sumitomo Seika Chemicals Co., Ltd. (current)

1960-12-24

Keiko KISHIGAMI

Director, Audit and Supervisory Committee Member

Oct 1985 Joined Minato Audit Corporation (now EY ShinNihon LLC) Aug 1989 Registered as Certified Public Accountant Dec 1997 Partner, Century Audit Corporation (now EY ShinNihon LLC) May 2004 Senior Partner, Shin Nihon & Co. (now EY ShinNihon LLC) Sep 2018 Director, WWF Japan (World Wide Fund for Nature Japan) (current) Jun 2019 Retired from EY ShinNihon LLC Jun 2019 Outside Audit & Supervisory Board Member, Okamura Corporation (current) Jun 2020 Outside Director (Audit Committee Member), Sony Corporation (now Sony Group Corporation) (current) Outside Audit & Supervisory Board Member, Sumitomo Seika Chemicals Co., Ltd. Jun 2021 Outside Director, Audit and Supervisory Committee Member, Sumitomo Seika Chemicals Co., Ltd. (current) Mar 2023 Outside Audit & Supervisory Board Member, DIC Corporation (current)

1957-01-28

Keiko MIYAMOTO

Director, Audit and Supervisory Committee Member

Apr 1992 Registered as Attorney at Law; joined Daiichi Law Office (now Daiichi Law Office Attorneys at Law Corporation) Dec 2007 Partner Attorney, Daiichi Law Office (current) Jun 2017 Outside Director, Audit and Supervisory Committee Member, SRS Holdings Co., Ltd. (current) Jun 2025 Outside Director, Audit and Supervisory Committee Member, Sumitomo Seika Chemicals Co., Ltd. (current)

1964-03-23

Large Shareholding Reports

Sumitomo Mitsui Trust Asset Management Co., Ltd.

2025-11-07

2.42%→1.48%

Disclosures

No disclosures

Primary Source Filings

TDnet

2026-08-06

Q1 Earnings Flash

FY ending Mar 2027

Sumitomo Seika Chemicals Company,Limited.

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Sumitomo Seika Chemicals Company,Limited.

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