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Overview

Chemicals

TOKYO OHKA KOGYO CO.,LTD.

Tokyo Ohka Kogyo (TOK) is a leading manufacturer of electronics functional materials and high-purity chemicals, with core competencies in microfabrication technology and high-purity chemical technology serving the global semiconductor industry. The company's primary products include photoresists, process chemicals, and other specialty materials essential for semiconductor lithography and advanced chip manufacturing. TOK's deep expertise in EUV lithography materials—evidenced by its strategic partnership with Irresistible Materials—positions it at the forefront of next-generation semiconductor fabrication.

Market Cap

¥928B

US$5.92B

¥864B

US$5.51B

Stock¥7,735▼-0.86%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

13.0

LTM EV/EBIT

15.1

LTM PER

23.1

LTM PBR

3.7

Stock vs TOPIX (1Y, base=100)vs TOPIX ▲+26.5%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Aug 7, 26Q2 FY2026/12 earnings announced

MC → EV Bridge

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Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

90%

EquityD/E 0.11xDebt

Liquidity vs Debt 5Y (¥B)▲ Net Cash

CashInv. Sec.Debt

Shareholders

Top 10 hold 39.8%

as of 2026-06-30 · Source: Annual Securities Report

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

13.84%

Custody Bank of Japan, Ltd. (Trust Account)

4.94%

Meiji Yasuda Life Insurance Company (Standing Proxy: Custody Bank of Japan, Ltd.)

4.57%

MUFG Bank, Ltd.

3.02%

The Bank of Yokohama, Ltd. (Standing Proxy: Custody Bank of Japan, Ltd.)

2.57%

Tokyo Ohka Foundation for Promotion of Science and Technology

2.46%

Mitsubishi UFJ Trust and Banking Corporation (Standing Proxy: The Master Trust Bank of Japan, Ltd.)

2.38%

Mitsubishi UFJ Capital Co., Ltd.

2.15%

GOVERNMENT OF NORWAY (Standing Proxy: Citibank, N.A., Tokyo Branch)

1.98%

Tokio Marine & Nichido Fire Insurance Co., Ltd.

1.93%

Management

10 officers

Junsho TANEICHI

Representative Director, President and Executive Officer

Apr 1986 Joined Tokyo Ohka Kogyo Co., Ltd. Jun 2009 General Manager, Business Development Department, the Company Jun 2011 General Manager, New Business Development Department, the Company Jun 2015 Executive Officer, Deputy General Manager, New Business Development Office, the Company Jun 2017 Director and Executive Officer, General Manager, New Business Development Office, the Company Jan 2019 Representative Director, President and Executive Officer, the Company (current)

1962-11-23

Kosuke DOI

Director, Senior Managing Executive Officer, General Manager of Sales Division

Apr 1986 Joined Tokyo Ohka Kogyo Co., Ltd. Jun 2009 General Manager, Advanced Materials Development Department 1, the Company Jun 2011 President, TOKYO OHKA KOGYO AMERICA, INC. Jun 2016 Executive Officer (President, TOKYO OHKA KOGYO AMERICA, INC.), the Company Jan 2019 Executive Officer, General Manager of New Business Development Division, the Company Mar 2020 Managing Executive Officer, General Manager of Sales Division, the Company Mar 2022 Director and Managing Executive Officer, General Manager of Sales Division and General Manager of Development Division, the Company Mar 2023 Director and Senior Managing Executive Officer, General Manager of Sales Division and General Manager of Development Division, the Company Jan 2025 Director and Senior Managing Executive Officer, General Manager of Sales Division, the Company (current)

1962-05-10

Hiroki YAMAMOTO

Director, Managing Executive Officer, General Manager of Materials Business Division

Apr 1992 Joined Tokyo Ohka Kogyo Co., Ltd. Feb 2013 Plant Manager, TOK Advanced Materials Co., Ltd. Mar 2019 Deputy General Manager, Corporate Planning Division, the Company Mar 2020 Executive Officer, General Manager of Corporate Planning Division, the Company Mar 2023 Director and Executive Officer, General Manager of Materials Business Division, the Company Mar 2025 Director and Managing Executive Officer, General Manager of Materials Business Division, the Company (current)

1970-01-14

Katsumi OMORI

Director, Managing Executive Officer, General Manager of Development Division

Apr 1991 Joined Tokyo Ohka Kogyo Co., Ltd. Jun 2012 General Manager, Next-Generation Materials Development Department, the Company Jun 2016 Deputy General Manager, Development Division, the Company Mar 2020 Vice President and Director of Research Institute, TOK Advanced Materials Co., Ltd. Mar 2021 Executive Officer, Deputy General Manager, Development Division, the Company Jan 2025 Executive Officer, General Manager of Development Division, the Company Mar 2025 Director and Executive Officer, General Manager of Development Division, the Company Mar 2026 Director and Managing Executive Officer, General Manager of Development Division, the Company (current)

1967-10-08

Shogo ISHIHARA

Director, Executive Officer, General Manager of Human Resources Division

Apr 1991 Joined Tokyo Ohka Kogyo Co., Ltd. Jan 2019 General Manager, Equipment Sales Department, the Company Mar 2023 Seconded to AI Mechatec Co., Ltd.; General Manager, Semiconductor Process Equipment Business Division and General Manager, Equipment Sales Department Mar 2025 Deputy General Manager, Human Resources Division, the Company Jul 2025 Executive Officer, General Manager of Human Resources Division, the Company Mar 2026 Director and Executive Officer, General Manager of Human Resources Division, the Company (current)

1967-08-12

Takashi ANDO

Director

Apr 1979 Joined Sony Chemical Corporation (currently Dexerials Corporation) Oct 2006 Corporate Executive, Plant Manager of Kanuma Plant, Sony Chemical & Information Device Corporation (currently Dexerials Corporation) Dec 2007 Executive Officer, Plant Manager of Kanuma Plant, Sony Chemical & Information Device Corporation Apr 2010 Director, Plant Manager of Kanuma Plant, Sony Chemical & Information Device Corporation Sep 2012 Director and Executive Officer, General Manager of Development and Technology, Plant Manager of Kanuma Plant, Dexerials Corporation Apr 2014 Director and Senior Executive Officer, General Manager of Development and Technology, in charge of New Business Planning and Promotion and Materials Procurement, Dexerials Corporation Apr 2016 Director and Managing Executive Officer, General Manager of Production and Technology and Corporate R&D, Dexerials Corporation Jun 2016 Representative Director and Senior Managing Executive Officer, General Manager of Corporate R&D, Dexerials Corporation Jan 2019 Representative Director and Senior Managing Executive Officer, Dexerials Corporation Jun 2019 Director and Managing Executive Officer, Assistant to the President, Dexerials Corporation Mar 2020 Director and Managing Executive Officer, Assistant to the President, Dexerials Corporation; President, Dexerials America Corporation Jun 2020 Technical Adviser, Dexerials Corporation Mar 2022 Outside Director, the Company Sep 2022 Outside Director, AeroEdge Corporation (current) Mar 2023 Outside Director (Audit and Supervisory Committee Member), the Company Mar 2025 Outside Director, the Company (current)

1955-02-07

Yusuke NARUMI

Director, Full-time Audit and Supervisory Committee Member

Apr 1988 Joined Tokyo Ohka Kogyo Co., Ltd. Jun 2012 General Manager, Market Development Department, the Company Jan 2019 General Manager, Panel Materials Sales Department, the Company Apr 2019 General Manager, Imaging Materials Sales Department, the Company Mar 2020 Executive Officer, General Manager of New Business Development Division, the Company Mar 2021 Director and Executive Officer, General Manager of New Business Development Division, the Company Mar 2025 Director, Full-time Audit and Supervisory Committee Member, the Company (current)

1965-12-02

Kazuo ICHIYANAGI

Director, Audit and Supervisory Committee Member

Mar 1977 Joined Teikoku Tsushin Kogyo Co., Ltd. Apr 2005 Executive Officer, in charge of Development Department and General Manager, Development Department, Teikoku Tsushin Kogyo Co., Ltd. Apr 2008 Executive Officer, in charge of Technology Management Department, Development Technology Division, Teikoku Tsushin Kogyo Co., Ltd. Dec 2008 Executive Officer, General Manager, Development Technology Division, Teikoku Tsushin Kogyo Co., Ltd. Jun 2009 Director and Executive Officer, General Manager, Development Technology Division, Teikoku Tsushin Kogyo Co., Ltd. Oct 2009 Director and Executive Officer, General Manager, Development Division, Teikoku Tsushin Kogyo Co., Ltd. Jun 2010 Representative Director and President, Teikoku Tsushin Kogyo Co., Ltd. Jun 2019 Director and Senior Adviser, Teikoku Tsushin Kogyo Co., Ltd. Mar 2020 Outside Director, the Company Mar 2023 Outside Director (Audit and Supervisory Committee Member), the Company (current)

1953-09-26

Ayako IKEDA

Director, Audit and Supervisory Committee Member

Apr 1984 Registered as attorney-at-law, Second Tokyo Bar Association; joined Harago Law Office (currently Harago Sogo Law Office) Jan 1990 Steptoe & Johnson LLP (U.S.) Apr 1991 Admitted to the New York State Bar Sep 1992 Joined Hamada & Matsumoto (currently Mori Hamada & Matsumoto) Apr 2002 Instructor (civil litigation), Legal Training and Research Institute of the Supreme Court of Japan Apr 2006 Deputy Secretary General, Japan Federation of Bar Associations Apr 2015 Managing Director, Japan Federation of Bar Associations; Vice President, Second Tokyo Bar Association Jun 2021 Outside Director (Audit and Supervisory Committee Member), Tokai Tokyo Financial Holdings, Inc. (current) Mar 2024 Outside Director, the Company Jan 2025 Harago Sogo Law Office (current) Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)

1959-12-05

Isao NAKAJIMA

Director, Audit and Supervisory Committee Member

Apr 1982 Joined Tokyo Gas Co., Ltd. Apr 2008 General Manager, Finance Department, Tokyo Gas Co., Ltd. Apr 2011 General Manager, Central Branch, Tokyo Gas Co., Ltd. Apr 2012 General Manager, Group Structure Optimization Project, Tokyo Gas Co., Ltd. Apr 2013 Executive Officer, General Manager, Planning Department, Living Division, Tokyo Gas Co., Ltd. Apr 2015 Managing Executive Officer, CFO, in charge of Finance, Accounting, Procurement and Real Estate Planning Departments, Tokyo Gas Co., Ltd. Apr 2017 Managing Executive Officer, CFO, in charge of Finance, Accounting and Human Resources Departments, Tokyo Gas Co., Ltd. Apr 2018 Senior Managing Executive Officer, CFO, in charge of Finance, Accounting, Human Resources and Procurement Departments, Tokyo Gas Co., Ltd. Jun 2019 Full-time Audit & Supervisory Board Member, Tokyo Gas Co., Ltd. Jun 2021 Director, Full-time Audit and Supervisory Committee Member, Tokyo Gas Co., Ltd. Jun 2023 Chairman, Tokyo Gas Real Estate Co., Ltd. Mar 2025 Outside Director (Audit and Supervisory Committee Member), the Company (current)

1958-12-05

Large Shareholding Reports

Tokio Marine & Nichido Fire Insurance Co., Ltd.

2026-02-05

2.01%→2.01%

Annual report (as of 2026-06-30): 1.93%

Tokio Marine Asset Management Co., Ltd.

2025-09-04

2.99%

Disclosures

No disclosures

Primary Source Filings

EDINET

2026-08-07

Semi-Annual Securities Report

Period: Jan 2026 – Dec 2026

TOKYO OHKA KOGYO CO.,LTD.

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TOKYO OHKA KOGYO CO.,LTD.

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