Overview
Retail Trade

ATOM CORPORATION

Atom Corporation operates a chain of casual dining restaurants primarily in the Tohoku to Kansai regions of Japan, with core brands including rotating sushi (kaiten-zushi) under 'Nigiri no Tokubei' and 'Kaisen Atom,' as well as steak and yakiniku (Japanese BBQ) restaurants. The company operates stores through both directly managed and franchise formats, targeting family and casual dining segments. As a member of the Colowide Group, Atom has undergone recent restructuring, transferring its izakaya business to Colowide Dining and its karaoke business to Shin Corporation.

Market Cap
¥60.3B
US$384M
EV
¥62.2B
US$396M
Stock¥312▲+1.96%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
98.4
x
LTM EV/EBIT
NM
LTM PER
NM
LTM PBR
18.4
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-67.2%pt
100
Oct 24, 25 – Oct 23, 26StockTOPIX
MC → EV Bridge
60.3BUS$384MMarket Cap6.41BUS$40.8M+ Debt4.37BUS$27.9M− Cash0.13BUS$0.80M− Inv. Sec.62.2BUS$396MEV
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Performance & Balance
Revenue 5Y (¥B)
31.1US$198M'22/335.2US$225M'23/336.9US$236M'24/335.5US$226M'25/330.4US$194M'26/3
EBITDA 5Y (¥B)
-0.27-US$1.75M'22/30.10US$0.65M'23/31.05US$6.66M'24/30.25US$1.59M'25/30.75US$4.76M'26/3
Net Income 5Y (¥B)
0.32US$2.05M'22/3-2.17-US$13.8M'23/3-1.47-US$9.38M'24/30.53US$3.38M'25/3-1.51-US$9.61M'26/3
Capital Structure
34%
66%
EquityD/E 1.95xDebt
Liquidity vs Debt 5Y (¥B)▼ Net Debt
CashInv. Sec.Debt
7.34US$46.8M7.10US$45.3M'22/35.79US$36.9M6.24US$39.8M'23/34.85US$30.9M6.24US$39.8M'24/36.90US$44.0M5.38US$34.3M'25/33.76US$24.0M5.65US$36.0M'26/3
Shareholders
Top 10 hold 43.2%
1
COLOWIDE CO.,LTD.
41.19%
2
BNY GCM CLIENT ACCOUNT JPRD AC ISG (FE-AC; Standing Proxy: MUFG Bank, Ltd.)
0.97%
3
The Ashikaga Bank, Ltd.
0.26%
4
Nomura Securities Co., Ltd.
0.19%
5
SIX SIS FOR SWISS NATIONAL BANK (Standing Proxy: MUFG Bank, Ltd.)
0.12%
6
Hiroko INOUE
0.11%
7
OOMITSU CO.,LTD.
0.09%
8
STATE STREET BANK AND TRUST COMPANY 505103 (Standing Proxy: Mizuho Bank, Ltd.)
0.09%
9
ATOM CORPORATION Business Partners' Stock Ownership Association
0.08%
10
BNYM SA/NV FOR BNYM FOR BNYM GCM CLIENT ACCTS M ILM FE (Standing Proxy: MUFG Bank, Ltd.)
0.08%
Management
8 officers
Takeshi UEDA
Representative Director, President
Sep 2001 Joined Heisei Food Service Co., Ltd. (current Colowide Co., Ltd.) Jun 2005 the Company, Representative Director, President Jun 2011 Colowide East Japan Co., Ltd. (current Colowide MD Co., Ltd.), Representative Director, President Jun 2011 Colowide Co., Ltd., Director Apr 2023 W.P.G. Japan Co., Ltd., Representative Director, President Jun 2023 Colowide Co., Ltd., Director, General Manager, Development Division Apr 2024 Colowide Co., Ltd., Director, General Manager, Contract Business Division Dec 2024 Heartful Dining Co., Ltd., Representative Director, President Mar 2025 the Company, Advisor May 2025 the Company, Advisor and General Manager, Sales Division Jun 2025 the Company, Representative Director, President (current)
1964-09-13
Shinichiro SATO
Director
Nov 1997 Joined Sony Nakanida Co., Ltd. (current K-Tec Co., Ltd.) Sep 2012 K-Tec Co., Ltd., General Manager, Administration Department Sep 2016 K-Tec Co., Ltd., Executive Officer, General Manager, Administration and General Affairs Departments Feb 2018 K-Tec Co., Ltd., Director, General Manager, Administration and General Affairs Departments Feb 2019 K-Tec Co., Ltd., Managing Director, General Manager, Administration, General Affairs and Production Planning Departments Jul 2020 K-Tec Co., Ltd., Senior Managing Director, General Manager, Administration, General Affairs, Production Planning and Sales Departments Jul 2022 Joined Atom Co., Ltd. Feb 2023 the Company, General Manager, Accounting and Administration Departments Apr 2024 the Company, General Manager, Administration Division Jun 2024 the Company, Director, General Manager, Administration Division (current)
1975-03-25
Masahiro SANPEI
Director
Oct 2004 Joined Reins International Co., Ltd. Oct 2016 Transferred to Colowide Co., Ltd. Jun 2024 Colowide Co., Ltd., Senior Manager, Group Human Resources Department Aug 2024 Nihon Meika Sohonpo Co., Ltd. (current N Baton Company Co., Ltd.), Director Sep 2024 Kuraya Co., Ltd., General Manager, Administration Division Mar 2025 the Company, General Manager, General Department May 2025 the Company, Deputy General Manager, Sales Promotion Division Jun 2025 the Company, Director, General Manager, Sales Promotion Division (current)
1978-08-07
Sayaka IKEDA
Director
Jun 1996 Joined Andersen Consulting (current Accenture Japan Ltd.) Feb 2001 Consultant, InterBrand Japan Co., Ltd. Oct 2004 Joined Recruit Co., Ltd. Sep 2013 Representative Director, President, Rita Brands Co., Ltd. May 2018 Managing Director, Accenture Japan Ltd. Aug 2020 Member, Study Group on New Employment Support for Women and Seniors, Cabinet Secretariat Apr 2021 Representative Director, President, Rita Brands Co., Ltd. (current) Jun 2024 the Company, Outside Director (current)
1972-11-11
Masakazu TSUCHIDA
Director (Audit and Supervisory Committee Member)
Mar 1996 Joined Amuze Co., Ltd. (current: the Company) Apr 2009 the Company, Executive Officer, General Manager, Tohoku Sales Division Feb 2014 Atom Hokkaido Co., Ltd., Executive Officer, General Manager, Sales Division Aug 2017 the Company, General Manager, Chubu Sales Division Oct 2018 the Company, General Manager, Safety Management Department May 2020 the Company, General Manager, General Affairs Department Jan 2021 the Company, Deputy General Manager, General Affairs, Management Support Department Jun 2022 the Company, Director (Audit and Supervisory Committee Member) (current)
1972-02-27
Saira OKURA
Director (Audit and Supervisory Committee Member)
Apr 2002 Joined Tohmatsu Audit Corporation (current Deloitte Touche Tohmatsu LLC) May 2005 Registered as Certified Public Accountant (current) Nov 2022 Established Saira Okura CPA Office, Head (current) Nov 2022 Full-time Audit & Supervisory Board Member, Osvision Co., Ltd. (current) Jun 2024 the Company, Outside Director (Audit and Supervisory Committee Member) (current)
1979-09-28
Misao YAMAZAKI
Director (Audit and Supervisory Committee Member)
Feb 2012 Joined Shinso Audit Corporation Dec 2013 Joined Arata Audit Corporation (current PwC Japan LLC) Dec 2015 Registered as Certified Public Accountant (current) Feb 2019 Opened Yamazaki CPA Office, Representative (current) Jun 2024 the Company, Outside Director (Audit and Supervisory Committee Member) (current) Nov 2024 Full-time Outside Audit & Supervisory Board Member, Demae-can Co., Ltd. (current) Oct 2025 Outside Audit & Supervisory Board Member, Kyobashi Art Residence Co., Ltd. (current)
1982-03-04
Naoko KUMAO
Director (Audit and Supervisory Committee Member)
Nov 2016 Joined Legal Training and Research Institute of the Supreme Court (70th class) Dec 2017 Registered as attorney-at-law (Tokyo First Bar Association); joined Legal Plus Law Corporation Oct 2018 Joined Shimamura Law & Accounting Office (current) Mar 2020 Outside Director (Audit and Supervisory Committee Member), Sailor Pen Co., Ltd. (current) Jun 2021 Outside Director (Audit and Supervisory Committee Member), Colowide Co., Ltd. Jul 2022 Outside Director (Audit and Supervisory Committee Member), Hamee Corp. (current) Nov 2022 Outside Director (Audit and Supervisory Committee Member), Meikou Network Japan Co., Ltd. (current) Jun 2025 the Company, Outside Director (Audit and Supervisory Committee Member) (current) Jun 2025 Reins International Co., Ltd., Outside Director (Audit and Supervisory Committee Member) (current)
1970-02-27
Large Shareholding Reports
No filings
Disclosures
No disclosures
Primary Source Filings
TDnet
2026-08-12
Q1 Earnings Flash
FY ending Mar 2027
TDnet
2026-08-10
Q1 Earnings Flash
FY ending Mar 2027
EDINET
2026-06-19
Annual Securities Report
Period: Apr 2025 – Mar 2026
TDnet
2026-02-13
Q3 Earnings Flash
FY ending Mar 2026
TDnet
2026-02-10
Q3 Earnings Flash
FY ending Mar 2026
EDINET
2025-11-14
Semi-Annual Securities Report
Period: Apr 2025 – Mar 2026
TDnet
2025-08-13
Q1 Earnings Flash
FY ending Mar 2026
TDnet
2025-08-07
Q1 Earnings Flash
FY ending Mar 2026
EDINET
2025-06-20
Annual Securities Report
Period: Apr 2024 – Mar 2025
TDnet
2025-02-14
Q3 Earnings Flash
FY ending Mar 2025
TDnet
2025-02-07
Q3 Earnings Flash
FY ending Mar 2025
EDINET
2024-11-14
Semi-Annual Securities Report
Period: Apr 2024 – Mar 2025
TDnet
2024-08-13
Q1 Earnings Flash
FY ending Mar 2025
TDnet
2024-08-08
Q1 Earnings Flash
FY ending Mar 2025
EDINET
2024-06-26
Annual Securities Report
Period: Apr 2023 – Mar 2024
EDINET
2024-02-14
Quarterly Securities Report
Period: Oct 2023 – Dec 2023
EDINET
2023-11-14
Quarterly Securities Report
Period: Jul 2023 – Sep 2023
EDINET
2023-08-14
Quarterly Securities Report
Period: Apr 2023 – Jun 2023
EDINET
2023-06-20
Annual Securities Report
Period: Apr 2022 – Mar 2023
EDINET
2023-02-14
Quarterly Securities Report
Period: Oct 2022 – Dec 2022
EDINET
2022-11-14
Quarterly Securities Report
EDINET
2022-08-15
Quarterly Securities Report
EDINET
2022-06-22
Annual Securities Report
EDINET
2022-02-14
Quarterly Securities Report
EDINET
2021-11-15
Quarterly Securities Report
EDINET
2021-08-13
Quarterly Securities Report
EDINET
2021-06-18
Annual Securities Report
EDINETAmended
2021-03-02
Amended Annual Securities Report
EDINETAmended
2021-03-02
Amended Quarterly Securities Report
EDINET
2021-02-15
Quarterly Securities Report
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