Overview
Other Products

KOKEN LTD.

The company operates across three core segments: mask-related business (respiratory protective equipment including dust masks and gas masks for occupational safety and health), environmental-related business (open clean systems and related products), and other businesses. Products are primarily designed for industrial safety and environmental protection applications. The group also supports public-interest activities related to occupational health research and scholarship programs for children of industrial accident victims through a related foundation.

Market Cap
¥8.32B
US$53.0M
EV
¥10.4B
US$66.5M
Stock¥1,719▼-0.23%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
6.2
x
LTM EV/EBIT
8.4
x
LTM PER
9.9
x
LTM PBR
0.6
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-26.1%pt
100
Oct 24, 25 – Oct 23, 26StockTOPIX
MC → EV Bridge
8.32BUS$53.0MMarket Cap5.47BUS$34.9M+ Debt3.02BUS$19.2M− Cash0.34BUS$2.17M− Inv. Sec.10.4BUS$66.5MEV
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Performance & Balance
Revenue 5Y (¥B)
10.2US$65.1M'21/1210.6US$67.6M'22/1210.6US$67.5M'23/1210.8US$68.6M'24/1211.9US$75.6M'25/12
EBITDA 5Y (¥B)
1.61US$10.3M'21/121.78US$11.3M'22/121.50US$9.55M'23/121.45US$9.25M'24/121.69US$10.8M'25/12
Net Income 5Y (¥B)
0.86US$5.50M'21/120.83US$5.31M'22/120.70US$4.47M'23/120.72US$4.60M'24/120.89US$5.64M'25/12
Capital Structure
72%
28%
EquityD/E 0.40xDebt
Liquidity vs Debt 5Y (¥B)▼ Net Debt
CashInv. Sec.Debt
2.26US$14.4M6.13US$39.1M'21/122.49US$15.9M6.13US$39.1M'22/123.10US$19.8M6.05US$38.6M'23/122.72US$17.3M5.18US$33.1M'24/122.94US$18.7M5.79US$36.9M'25/12
Shareholders
Top 10 hold 63.9%
1
Sakai CHS Promotion Foundation (Public Interest Incorporated Foundation)
12.12%
2
Shinichi SAKAI
11.94%
3
Hiroyuki SAKAI
11.30%
4
Kaori SAKAI
4.64%
5
Rie SAKAI
4.64%
6
Mizuho Bank, Ltd. (Standing Proxy: Custody Bank of Japan, Ltd.)
4.61%
7
Miho KUBOI
4.57%
8
Haruna YAMANAKA
4.57%
9
Resona Bank, Limited
3.30%
10
Custody Bank of Japan, Ltd. (Trust Account E)
2.23%
Management
11 officers
Shinichi SAKAI
Representative Director, Chairman
Apr 1964 Joined Renown Shoji Co., Ltd. Aug 1967 Joined the Company Sep 1967 Director, General Manager of Technical Department Jan 1981 Representative Director, President Mar 2003 Representative Director, President, Sakai Kosan Co., Ltd. Mar 2003 Representative Director, President, Sakai Tatemono Co., Ltd. Mar 2003 Representative Director, Chairman (current) May 2006 Chairman, Japan Safety Products Association (now Japan Safety Products Association, a Public Interest Incorporated Association) Apr 2015 Trustee, Sakai CHS Promotion Foundation (now Sakai CHS Promotion Foundation, a Public Interest Incorporated Foundation) (current)
1941-08-22
Tsutomu MURAKAWA
Representative Director, President
Apr 1989 Joined the Company Sep 1999 General Manager, Quality Assurance Office Mar 2002 General Manager, Tokorozawa Techno Yard Feb 2007 General Manager, Tokorozawa Techno Yard and Manager, Overseas Division Mar 2008 Executive Officer, General Manager, Tokorozawa Techno Yard and Manager, Overseas Division Jan 2009 Executive Officer, Manager, Overseas Division Mar 2010 Managing Director, in charge of Technology Headquarters and Manager, Overseas Division Jul 2013 Senior Managing Director, in charge of Technology Headquarters and Manager, Overseas Division Jan 2014 Senior Managing Director, in charge of Technology Headquarters Mar 2014 Representative Director, President, in charge of Technology Headquarters Apr 2015 Trustee, Sakai CHS Promotion Foundation (now Sakai CHS Promotion Foundation, a Public Interest Incorporated Foundation) (current) Mar 2025 Representative Director, President (current)
1966-01-08
Nobuya HORIGUCHI
Representative Director, Vice President, in charge of Manufacturing Headquarters
Apr 1982 Joined the Company Mar 1998 Manager, Safety and Health Division Mar 2008 Executive Officer, Manager, Safety and Health Division Mar 2010 Managing Director, in charge of Manufacturing Headquarters Nov 2012 President, Director, SIAM KOKEN LTD. (current) Jul 2013 Senior Managing Director, in charge of Manufacturing Headquarters Mar 2014 Representative Director, Vice President, in charge of Manufacturing Headquarters (current)
1958-08-28
Koji MURAMATSU
Senior Managing Director, in charge of Marketing Headquarters
Apr 1978 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) Apr 2002 General Manager, Hongo-dori Branch, Mizuho Bank, Ltd. Feb 2004 Department Head, Osaka Public Affairs Department, Mizuho Bank, Ltd. Feb 2006 Seconded to the Company Mar 2006 General Manager, Administration Headquarters Mar 2007 Joined the Company Mar 2007 Managing Director, General Manager, Administration Headquarters Mar 2008 Managing Director, in charge of Administration Headquarters Mar 2014 Senior Managing Director, in charge of Administration Headquarters and Marketing Headquarters Mar 2015 Senior Managing Director, in charge of Marketing Headquarters (current)
1956-02-21
Hideaki IBATA
Senior Managing Director, in charge of Administration Headquarters
Apr 1986 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) May 2006 General Manager, Ageo Branch, Mizuho Bank, Ltd. Mar 2010 Department Head, Branch Operations Department No. 7, Mizuho Bank, Ltd. Jun 2011 General Manager, Tokyo Chuo Branch, Mizuho Bank, Ltd. Jun 2014 Seconded to the Company, Deputy General Manager, Administration Headquarters Mar 2015 Managing Director, in charge of Administration Headquarters Mar 2026 Senior Managing Director, in charge of Administration Headquarters (current)
1962-12-07
Toshiaki NAGASAKA
Director, in charge of Internal Control
Apr 1982 Joined the Company Mar 2000 General Manager, Tokorozawa Techno Yard Mar 2002 General Manager, Sayama Techno Yard Feb 2007 General Manager, Compliance Office Mar 2008 Executive Officer, General Manager, Compliance Office Nov 2008 Executive Officer, General Manager, Compliance Office and General Manager, Safety and Environment Management Office Aug 2009 Executive Officer, General Manager, Accounting Department Mar 2014 Director, General Manager, Accounting Department Nov 2025 Director, in charge of Internal Control (current)
1959-10-16
Toshio AKIYAMA
Full-time Corporate Auditor
Apr 1973 Joined the Company Aug 1986 Manager, Special Demand Division Mar 2000 Director, Manager, Special Demand Division and Manager, Hygienic Equipment Division Apr 2001 Director, Manager, Hygienic Equipment Division Mar 2003 Director, General Manager, Sales Headquarters and General Manager, Sales Planning Department Feb 2006 Director, General Manager, Sales Headquarters, General Manager, Sales Planning Department and Manager, Overseas Division Feb 2007 Director, General Manager, Sales Headquarters and General Manager, Sales Planning Department Mar 2008 Managing Director, in charge of Sales Headquarters Mar 2012 Managing Director, in charge of Internal Control Mar 2015 Full-time Corporate Auditor (current)
1949-04-02
Fumikazu TANAKA
Full-time Corporate Auditor
Apr 1981 Joined the Company Oct 1996 Manager, Life Safety Division Oct 2003 General Manager, West Japan Block Department Mar 2008 Executive Officer, General Manager, West Japan Block Department Apr 2008 Executive Officer, General Manager, Sales Planning Department and General Manager, East Japan Block No. 2 Department Apr 2011 Executive Officer, Deputy General Manager, Sales Headquarters and General Manager, Sales Planning Department Mar 2012 Managing Director, in charge of Sales Headquarters Mar 2014 Senior Managing Director, in charge of Sales Headquarters Mar 2025 Full-time Corporate Auditor (current)
1957-02-22
Teruo SHINATO
Corporate Auditor
Apr 1978 Joined Fuji Bank, Ltd. (now Mizuho Bank, Ltd.) Jan 1990 Seconded to Tokyo Financial Exchange Inc. (now Tokyo Financial Exchange Inc.), Section Manager, Planning Section Apr 1994 Deputy General Manager, Paris Branch, Fuji Bank, Ltd. Jul 2000 General Manager, Sales Department, Mizuho Trust & Banking Co., Ltd. Apr 2002 Manager, General Planning Department, Mizuho Trust & Banking Co., Ltd. Apr 2003 Professor, Faculty of Business Administration, Asahi University Apr 2006 Professor, Graduate School of Integrated Basic Sciences, Nihon University Apr 2012 Dean and Professor, Graduate School of Integrated Basic Sciences, Nihon University Mar 2015 Corporate Auditor (current) Apr 2020 Professor, Graduate School of Integrated Basic Sciences, Nihon University Apr 2021 Specially Appointed Professor, Graduate School of Integrated Basic Sciences, Nihon University
1955-02-24
Shinobu SAKURAI
Director
Apr 2004 Professor, Department of Nursing, School of Medicine, Mie University; Professor, Division of Nursing, Graduate School of Medicine, Mie University Sep 2011 Professor Emeritus, Mie University (current); Professor, Department of Nursing, Faculty of Nursing and Medical Care, Juntendo University; Professor, Division of Nursing, Graduate School of Nursing and Medical Care, Juntendo University (current) Apr 2014 Professor, Department of Health Sciences, Faculty of Sport and Health Science, Juntendo University Mar 2017 Director (current)
1961-05-10
Nikko HAKU
Corporate Auditor
Nov 2002 Passed the National Bar Examination Oct 2004 Registered with Daini Tokyo Bar Association; joined Sakura Joint Law Office Jan 2011 Partner Attorney, Sakura Joint Law Office (current) Mar 2015 Corporate Auditor (current)
1977-03-07
Large Shareholding Reports
No filings
Disclosures
No disclosures
Primary Source Filings
EDINET
2026-08-06
Semi-Annual Securities Report
Period: Jan 2026 – Dec 2026
TDnet
2026-08-05
Q2 Earnings Flash
FY ending Dec 2026
TDnet
2026-05-08
Q1 Earnings Flash
FY ending Dec 2026
EDINET
2026-03-25
Annual Securities Report
Period: Jan 2025 – Dec 2025
TDnet
2025-11-07
Q3 Earnings Flash
FY ending Dec 2025
EDINET
2025-08-07
Semi-Annual Securities Report
Period: Jan 2025 – Dec 2025
TDnet
2025-05-08
Q1 Earnings Flash
FY ending Dec 2025
EDINET
2025-03-28
Annual Securities Report
Period: Jan 2024 – Dec 2024
EDINET
2024-08-07
Semi-Annual Securities Report
Period: Jan 2024 – Dec 2024
EDINET
2024-05-10
Quarterly Securities Report
Period: Jan 2024 – Mar 2024
EDINET
2024-03-28
Annual Securities Report
Period: Jan 2023 – Dec 2023
EDINET
2023-11-08
Quarterly Securities Report
Period: Jul 2023 – Sep 2023
EDINET
2023-08-08
Quarterly Securities Report
Period: Apr 2023 – Jun 2023
EDINET
2023-05-12
Quarterly Securities Report
Period: Jan 2023 – Mar 2023
EDINET
2023-03-29
Annual Securities Report
Period: Jan 2022 – Dec 2022
EDINET
2022-11-09
Quarterly Securities Report
EDINET
2022-08-09
Quarterly Securities Report
EDINET
2022-05-10
Quarterly Securities Report
EDINET
2022-03-30
Annual Securities Report
EDINET
2021-11-09
Quarterly Securities Report
EDINET
2021-08-11
Quarterly Securities Report
EDINET
2021-05-11
Quarterly Securities Report
EDINET
2021-03-29
Annual Securities Report
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