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Overview

Glass and Ceramics Products

KURAMOTO CO.,LTD.

Kuramoto Co., Ltd. specializes in ultra-precision surface processing of glass substrates for flat panel displays (FPD), including cutting, chamfering, and polishing, as well as semiconductor component processing such as quartz glass and silicon carbide (SiC) parts. The company also operates businesses in commercial cleaning robots, AI high-speed cameras, perovskite solar cells, quartz parts repair services, and DX/IT solutions via the Lark platform. Its core competitive strength lies in nano-level precision processing technology combined with proprietary in-house manufacturing equipment developed by the Kuramoto group.

Market Cap

¥6.67B

US$42.5M

¥6.95B

US$44.3M

Stock¥122▲+0.00%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

LTM EV/EBIT

LTM PER

LTM PBR

6.8

Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-48.2%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

MC → EV Bridge

AI Briefing

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Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

66%

34%

EquityD/E 0.51xDebt

Liquidity vs Debt 5Y (¥B)▼ Net Debt

CashInv. Sec.Debt

Shareholders

Top 10 hold 40.5%

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

New Century Limited Liability Partnership

15.13%

Chi WANG

9.56%

Nasu Material Co., Ltd.

7.82%

Toshiyuki WATANABE

3.08%

Rakuten Securities, Inc.

1.13%

Smart Yongki Limited Liability Partnership

1.02%

Ke LI

0.83%

BNYM AS AGT/CLTS NON TREATY JASDEC (Standing Proxy: MUFG Bank, Ltd.)

0.73%

FUTU SECURITIES INTERNATIONAL (HONG KONG) LIMITED (Standing Proxy: moomoo Securities Co., Ltd.)

0.63%

CLEARSTREAM BANKING S.A. (Standing Proxy: The Hongkong and Shanghai Banking Corporation Limited)

0.59%

Management

9 officers

Shoji HOSHI

Representative Director, CEO

May 2001 Director, Nasu Material Co., Ltd. Jun 2003 Representative Director, Nasu Material Co., Ltd. (current) Oct 2003 Director, Maruho Construction Co., Ltd. (current) Sep 2004 Director, Nichisho Co., Ltd. Sep 2007 Director, Akita Material Co., Ltd. (current) Nov 2016 Director, Mujaki (general incorporated association) (current) Nov 2019 Representative Director, Pretec Engineering SF Co., Ltd. (current) Mar 2021 Director, the Company Apr 2024 Director, AKIMATE Holdings Co., Ltd. (current) Feb 2025 Representative Director, Nichisho Co., Ltd. (current) Feb 2026 Director, I With Robotics Co., Ltd. (current) Mar 2026 Representative Director, CEO, the Company (current)

1972-12-12

Mamoru KOMINE

Representative Director, President and CFO

Apr 1984 Joined Yano Research Institute Ltd. Jan 1994 Joined D-Brain Co., Ltd. (now D-Brain Consulting Co., Ltd.) Jul 1997 Audit & Supervisory Board Member, D-Brain Securities Co., Ltd. (now Nihon Cloud Securities Co., Ltd.) Mar 1999 Director, D-Brain Securities Co., Ltd. Apr 2000 Representative Director, D-Brain Co., Ltd. (now D-Brain Consulting Co., Ltd.) Aug 2012 Representative Director, Interval Valve Technology Co., Ltd. (current) Sep 2012 Audit & Supervisory Board Member, Eisho Co., Ltd. Jun 2013 Director, Eisho Co., Ltd. Jun 2014 Representative Director, Daikoh Giken Co., Ltd. (now DG Technologies Co., Ltd.) Oct 2014 Established AK Consulting Co., Ltd., Representative Director (current) Apr 2020 Director, the Company Dec 2024 Audit & Supervisory Board Member, I With Robotics Co., Ltd. Mar 2026 Representative Director, President and CFO, the Company (current)

1961-10-02

Toshiyuki WATANABE

Director

Apr 1997 Joined Takeda Pharmaceutical Co., Ltd. May 2003 Established Babypure Co., Ltd., Representative Director (current) Jan 2024 Adviser, the Company Mar 2024 President and Representative Director, the Company Dec 2024 Director, I With Robotics Co., Ltd. Mar 2026 Director, the Company (current)

1971-01-29

Chi WANG

Director

Jun 2006 Joined BYD Company Limited Oct 2013 Established Shenzhen Turui Technology Co., Ltd. Apr 2016 Established Shenzhen Aiweier Technology Co., Ltd. Jun 2021 Representative Director, Xiaodaren Intelligent Technology (Shenzhen) Co., Ltd. (current) Apr 2023 Representative Director, I With Robotics Co., Ltd. (current) Mar 2025 Director, the Company (current)

1979-10-29

Makoto EBATA

Director

Apr 1988 Joined Revan Co., Ltd. Mar 2000 Established Fitness Communications Co., Ltd. (now Fitcom Co., Ltd.), Representative Director May 2016 Representative Director, Sports Academy Co., Ltd. (now Fuujaasu Wellness & Sports Co., Ltd.) Jul 2017 Joined Nihon M&A Center Inc. Jul 2022 External Adviser, Unicon Co., Ltd. (current) Dec 2025 Consultant, ROMES Co., Ltd. (current) Mar 2026 Director, the Company (current)

1965-06-30

Kunio HONGO

Director

Jul 2009 General Manager, Electronic Materials Business Division, Lasa Industries Co., Ltd. Jan 2011 Director and General Manager, Business Division, RS Technologies Co., Ltd. Feb 2014 Director, Aiers Semiconductor Co., Ltd. Jan 2018 Director, Beijing Youyan RS Semiconductor Technology Co., Ltd. Aug 2018 Director, Shandong Youyan Semiconductor Materials Co., Ltd. Jan 2019 Director, DG Technologies Co., Ltd. Mar 2023 Director, the Company (current)

1951-08-15

Kazuya URAYU

Audit & Supervisory Board Member

Apr 1981 Joined Sumitomo Bank, Ltd. (now Sumitomo Mitsui Banking Corporation) Dec 1993 Head of Credit Review Department, Swiss Union Bank (now UBS Bank) and others May 1997 Head of Credit Review Department, Merrill Lynch Japan Securities Co., Ltd. and others Feb 2005 Head of Head Office Financial Evolution Plan Promotion Division, Sanyo Electric Co., Ltd. and others Jun 2011 Representative Director and President, Merchant Bankers Co., Ltd. and others May 2013 Vice President, Kamaichi Co., Ltd. May 2014 Senior Managing Director, Asahi Techno Plant Co., Ltd. Mar 2018 Managing Partner, Marginal (partnership) (current) Jun 2020 Outside Audit & Supervisory Board Member, Toda Kogyo Corp. Jun 2022 Outside Director, Toda Kogyo Corp. (current) Mar 2025 Audit & Supervisory Board Member, the Company (current) Feb 2026 Audit & Supervisory Board Member, I With Robotics Co., Ltd. (current)

1957-11-28

Toru KITAI

Audit & Supervisory Board Member

Nov 1977 Joined Fujita Kazuma Certified Public Accountant and Tax Accountant Office (Eisho Audit Corporation) Mar 1982 Registered as Certified Public Accountant Sep 1983 Registered as Certified Tax Accountant Sep 1985 Opened Toru Kitai Certified Public Accountant and Tax Accountant Office, Head (current) Mar 2020 Audit & Supervisory Board Member, the Company (current)

1952-10-03

Noriko KIKUCHI

Audit & Supervisory Board Member

Jul 2005 Registered as Certified Tax Accountant Sep 2009 Registered as Certified Administrative Procedures Legal Specialist Apr 2015 Representative Director, KIC Co., Ltd. Mar 2020 Audit & Supervisory Board Member, Union Electronics Solutions Co., Ltd. (current) Mar 2025 Audit & Supervisory Board Member, the Company (current)

1977-03-23

Large Shareholding Reports

Ample Harvest Capital (Hong Kong) Limited

2026-07-08

0.00%→6.26%

Nasu Material Co., Ltd.

2026-04-06

7.83%→8.89%

Annual report (as of 2026-06-30): 7.82%

Prolight Corporation Limited

2026-04-03

27.68%→29.83%

WANG CHI

2026-01-23

14.44%→13.35%

Annual report (as of 2026-06-30): 9.56%

Prolight Corporation Limited

2025-08-18

—

Prolight Corporation Limited

2025-08-18

—

Prolight Corporation Limited

2025-08-15

33.16%→27.68%

Prolight Corporation Limited

2025-08-15

27.68%→27.68%

Prolight Corporation Limited

2025-08-15

27.75%→27.68%

Prolight Corporation Limited

2025-08-15

33.16%→27.75%

Prolight Corporation Limited

2025-08-07

33.16%→33.16%

Disclosures

No disclosures

Primary Source Filings

EDINET

2026-08-07

Semi-Annual Securities Report

Period: Jan 2026 – Dec 2026

KURAMOTO CO.,LTD.

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KURAMOTO CO.,LTD.

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