Under supervision (confirmation) · Designated 2026-08-06 JPX notice
Overview
Information & Communication

DIGITAL HEARTS HOLDINGS Co.,Ltd.

Digital Hearts Holdings Co., Ltd. is a pure holding company operating under the mission 'SAVE the DIGITAL WORLD,' providing comprehensive software quality assurance and testing services through two core segments: the DH Group (focused on console and mobile game debugging, localization/LQA, creative services, and media via 4Gamer.net) and the AGEST Group (focused on enterprise system QA, security testing, ERP implementation support, and IT operations/maintenance). The company serves both entertainment content creators and enterprise clients, leveraging proprietary testing methodologies and an internationally certified workforce—holding ISTQB Global Partner status—to deliver end-to-end quality solutions across Japan and key global markets including the US, China, Taiwan, South Korea, Vietnam, and India.

Market Cap
¥23.6B
US$151M
EV
¥22.1B
US$141M
Stock¥1,060▼-0.84%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
7.0
x
LTM EV/EBIT
8.5
x
LTM PER
22.0
x
LTM PBR
2.4
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-12.9%pt
10012
Oct 23, 25 – Oct 23, 26StockTOPIX
1Aug 7, 26MBO tender offer by Sandbox announced, offer price ¥1,060/share
2Aug 10, 26MBO tender offer by Sandbox at ¥1,060/share, led by founder Eiichi Miyazawa
MC → EV Bridge
23.6BUS$151MMarket Cap5.97BUS$38.1M+ Debt6.54BUS$41.7M− Cash1.33BUS$8.48M− Inv. Sec.0.32BUS$2.04M+ NCI22.1BUS$141MEV
AI Briefing
Digital Hearts Holdings: dual-segment QA powerhouse spanning game debugging (DH Group) and enterprise testing/security (AGEST Group) across 20 subsidiaries in Japan, US, China, and Asia. FY26/3 revenue ¥38.9B with OP margin recovering to 6.7%, though growth has plateaued since FY23/3's ¥36.5B base as profitability rebuilds from FY24/3's dip. Founder-chairman Miyazawa controls 42% stake alongside Mitsutsushin's 6%, concentrated ownership structure typical of a scaled, cash-generative niche-tech platform at ¥23.4B market cap.
Performance & Balance
Revenue 5Y (¥B)
29.2US$186M'22/336.5US$233M'23/338.8US$247M'24/339.7US$253M'25/338.9US$248M'26/3
EBITDA 5Y (¥B)
2.97US$18.9M'22/33.47US$22.1M'23/32.56US$16.3M'24/33.00US$19.1M'25/33.18US$20.3M'26/3
Net Income 5Y (¥B)
1.78US$11.4M'22/30.80US$5.10M'23/30.18US$1.12M'24/30.63US$4.01M'25/31.18US$7.53M'26/3
Capital Structure
62%
38%
EquityD/E 0.61xDebt
Liquidity vs Debt 5Y (¥B)▲ Net Cash
CashInv. Sec.Debt
5.45US$34.7M5.59US$35.7M'22/36.95US$44.3M5.11US$32.6M'23/38.65US$55.2M7.10US$45.2M'24/38.93US$57.0M5.25US$33.5M'25/38.47US$54.0M5.77US$36.8M'26/3
Shareholders
Top 10 hold 68.2%
1
Eiichi MIYAZAWA
42.27%
2
Hikari Tsushin KK Investment Business Limited Liability Partnership
6.00%
3
A-1 LLC
5.94%
4
The Master Trust Bank of Japan, Ltd. (Trust Account)
4.68%
5
Custody Bank of Japan, Ltd. (Trust Account)
4.63%
6
Morgan Stanley MUFG Securities Co., Ltd.
1.47%
7
Taichi YABU
0.90%
8
BNY GCM CLIENT ACCOUNT JPRD AC ISG (FE-AC) (Standing Proxy: Junichi HANZAWA)
0.79%
9
NORTHERN TRUST CO. (AVFC) RE NON TREATY CLIENTS ACCOUNT (Standing Proxy: Takeshi KAKUDA)
0.75%
10
Hiroki OZAWA
0.72%
Management
10 officers
Toshiya CHIKUSHI
Representative Director, President and CEO
Apr 1989 Joined Showa Shell Sekiyu K.K. (now Idemitsu Kosan Co., Ltd.) Sep 1995 Joined PricewaterhouseCoopers Consulting Co., Ltd. (now IBM Japan, Ltd.) Jul 1999 Joined General Electric Capital Consumer Finance K.K. (now Shinsei Financial Co., Ltd.) Dec 2005 Executive Officer, same company Sep 2006 Executive Officer, Head of Business Development Group, Nissen Holdings Co., Ltd. Mar 2008 Director, Executive Officer, Head of Financial Planning Office, same company Jun 2009 Director, Executive Officer, CFO, same company Jun 2017 Executive Officer, CFO, the Company Oct 2017 Director, Head of Administration Division, Digital Hearts Co., Ltd. Jun 2018 Director, CFO, the Company Mar 2020 Representative Director, President, Flame Hearts Co., Ltd. (current) Mar 2021 Director, Metaps Entertainment Limited (now DIGITAL HEARTS CROSS Marketing and Solutions Limited) Apr 2021 Director, Global Head, Digital Hearts Co., Ltd. Jun 2021 Director, Vice President, CFO, the Company Apr 2022 Representative Director, President, Digital Hearts Co., Ltd. (current) Apr 2022 Director, AGEST, Inc. Apr 2023 Director, Vice President, COO, the Company Apr 2024 Representative Director, President and CEO, the Company (current)
1965-06-23
Eiichi MIYAZAWA
Representative Director, Chairman
Apr 2001 Founded Digital Hearts Co., Ltd., Representative Director, President May 2006 Representative Director, President and CEO, Digital Hearts Co., Ltd. Apr 2010 Representative Director, President and CEO, Digital Hearts Co., Ltd. Oct 2013 Representative Director, President and CEO, the Company Jun 2017 Director, Chairman, the Company Apr 2024 Representative Director, Chairman, the Company (current)
1972-07-19
Takashi YANAGIYA
Outside Director (Note 1)
Oct 2001 Managing Director, Nomura Securities Co., Ltd. Apr 2002 Representative Director, Senior Managing Director, same company Jun 2003 Representative Executive Officer, Senior Managing Executive Officer, same company Apr 2006 Representative Executive Officer, Executive Vice President, same company Apr 2008 Executive Officer, Vice Chairman, same company Oct 2008 Executive Officer, Vice Chairman, same company Apr 2012 Senior Advisor, same company Aug 2012 Advisor, same company Mar 2013 Retired from Nomura Securities Co., Ltd. Jun 2013 Outside Director, Alpha Systems Inc. Jun 2014 Outside Director, the Company (current) Jun 2015 Outside Director, Showa Sangyo Co., Ltd. May 2016 President, Meiji University (current) May 2016 President, Nakano Gakuen (current)
1951-11-13
Emiko MURE
Outside Director (Note 1)
Apr 1992 Joined Chuo Shinko Audit Corporation Mar 1995 Registered as Certified Public Accountant (until May 2005) Feb 2006 Re-registered as Certified Public Accountant (current) Mure CPA Office, Principal (current) Apr 2007 Project Associate Professor, Graduate School of Accounting, University of Hyogo Apr 2009 Associate Professor, Graduate School of Accounting, same university Apr 2012 Associate Professor, Graduate School of Accounting Professional Studies, Aoyama Gakuin University Jun 2015 Outside Director (Audit and Supervisory Committee Member), Kansai Supermarket Ltd. (now Kansai Food Market Ltd.) Jun 2022 Outside Director, the Company (current) Apr 2023 Professor, Graduate School of Accounting Professional Studies, Aoyama Gakuin University (current) Jun 2025 Outside Director (Audit and Supervisory Committee Member), Arata Co., Ltd. (current)
1969-01-11
Ryo CHIKAZAWA
Outside Director (Note 1)
Sep 2008 Registered as Attorney-at-law (Daini Tokyo Bar Association) Joined Mori Hamada & Matsumoto (now Mori Hamada & Matsumoto Foreign Law Joint Enterprise) Jan 2019 Partner, same firm (current) Jun 2022 Outside Director, the Company (current)
1984-05-16
Masahide DATE
Full-time Audit and Supervisory Board Member
Sep 1996 Joined Kaibundo Publishing Co., Ltd. Apr 2002 Joined Digital Hearts Co., Ltd. Apr 2003 Accounting Section Manager, Administration Division, same company Jul 2005 Full-time Audit and Supervisory Board Member, same company Oct 2013 Full-time Audit and Supervisory Board Member, the Company (current)
1971-10-20
Keiya KAZAMA
Audit and Supervisory Board Member
Oct 2001 Joined Deloitte Tohmatsu (now Deloitte Touche Tohmatsu LLC) Jun 2005 Registered as Certified Public Accountant (current) Jul 2007 Joined Oyano Certified Public Accountant Office Apr 2010 Registered as Certified Tax Accountant (current) Joined Digital Hearts Co., Ltd. Nov 2010 Deputy Head, Administration Division, same company Apr 2011 Head, Administration Division, same company Apr 2012 Executive Officer, Head of Finance and Accounting Division, same company Jun 2013 Director, Head of Finance and Accounting Division and Supervisor of Human Resources and General Affairs Division, same company Oct 2013 Director, the Company Jul 2014 Director, CFO, the Company Jun 2017 Director, the Company Jun 2018 Audit and Supervisory Board Member, the Company (current) Jul 2018 Representative, Kazama Accounting Office (current)
1975-09-24
Yoko OKANO
Outside Audit and Supervisory Board Member (Note 2)
Oct 2002 Registered as Attorney-at-law (Daini Tokyo Bar Association) Joined Tokyo Aoyama Aoki Law Office (now Baker & McKenzie Tokyo Aoyama Aoki Law Office) May 2006 Joined Itsukida Miura Law Office (current) Jun 2021 Outside Audit and Supervisory Board Member, the Company (current)
1975-01-06
Emiko AKATSU
Outside Audit and Supervisory Board Member (Note 2)
Apr 1986 Joined Fukutake Shoten Co., Ltd. (now Benesse Corporation) Oct 1988 Joined General Electric Company (Japan) Jan 1996 Joined GE Consumer Finance K.K. (now Shinsei Financial Co., Ltd.) Jun 2002 Director, Human Resources and Organization Development and Recruitment Division, same company Jun 2005 Director, Training Division, same company Feb 2008 Joined Novartis Pharma K.K., Head of Diversity and Inclusion Office May 2011 Joined Oracle Corporation Japan, Senior Director, Human Resources and Organization Development Division Jan 2016 Executive Officer and Executive Director, Head of Employee Engagement Office, same company Mar 2018 Joined Takeda Pharmaceutical Company Limited, Head of Global HR Talent and Organization Development (Japan) Feb 2021 Representative Director, President, Future Me Inc. (current) Jun 2022 Outside Director, Ages Inc. Jun 2025 Outside Audit and Supervisory Board Member, the Company (current)
1963-10-07
Ikuyo HORIGUCHI
Director (Audit and Supervisory Committee Member)
Apr 1987 Joined Recruit Co., Ltd. Aug 1995 Joined Pia Corporation Jun 1997 Joined Benesse Corporation Apr 2007 Executive Officer, Head of MD&M (Mail Order) Business Division, same company Sep 2008 Executive Officer, Head of W&F (Women & Family) Business Division, same company Mar 2013 Joined Yahoo Japan Corporation (now LY Corporation) May 2014 Executive Officer, Cookpad Inc. Mar 2017 Representative Director, President, Ouchino Inc. (now Kufu Living Co., Ltd.) Oct 2018 Representative Director, Kufu Company Inc. Jul 2019 Representative Director, Kurashi ni Kufu Inc. (now Kufu Company Inc.) Oct 2020 Representative Director, Enimari Inc. (now Kufu Wedding Inc.) Oct 2021 Executive Officer, Kufu Company Inc.; Representative Director, Locoguide Inc. (now Kufu Company Inc.) Mar 2022 Outside Director, Chiyomaru Co., Ltd. Jun 2023 Representative Director, Shizuoka Online Inc. (now Kufu Shizuoka Inc.) (current)
Large Shareholding Reports
Nomura Asset Management Co., Ltd.
2026-10-06
1.32%→1.41%
Koutsushin Co., Ltd.
2026-10-01
5.03%→0.00%
Sandbox Inc.
2026-09-30
46.83%→46.83%
Sandbox Inc.
2026-09-30
46.83%
NOMURA INTERNATIONAL PLC
2026-09-24
3.84%
Koutsushin Co., Ltd.
2026-03-03
5.03%
GW&K INVESTMENT MANAGEMENT, LLC
2025-12-03
5.80%→3.39%
Eiichi MIYAZAWA
2025-11-04
39.29%→39.45%
Annual report (as of 2026-03-31): 42.27%
Disclosures
No disclosures
Primary Source Filings
EDINET
2026-10-06
Large Shareholding Report
EDINET
2026-10-01
Large Shareholding Report
EDINET
2026-09-30
Large Shareholding Report
EDINET
2026-09-30
Large Shareholding Report
EDINET
2026-09-25
公開買付報告書
EDINET
2026-09-24
Large Shareholding Report
EDINET
2026-08-07
意見表明報告書
EDINET
2026-08-07
公開買付届出書
TDnet
2026-08-06
Q1 Earnings Flash
FY ending Mar 2027
EDINET
2026-06-23
Annual Securities Report
Period: Apr 2025 – Mar 2026
TDnet
2026-06-03
株主総会招集通知
EDINET
2026-03-03
Large Shareholding Report
TDnet
2026-02-05
Q3 Earnings Flash
FY ending Mar 2026
EDINET
2025-12-03
Large Shareholding Report
EDINET
2025-11-13
Semi-Annual Securities Report
Period: Apr 2025 – Mar 2026
EDINET
2025-11-04
Large Shareholding Report
TDnet
2025-08-07
Q1 Earnings Flash
FY ending Mar 2026
EDINETAmended
2025-07-14
Amended Annual Securities Report
Period: Apr 2024 – Mar 2025
EDINET
2025-06-27
Annual Securities Report
Period: Apr 2024 – Mar 2025
TDnet
2025-02-06
Q3 Earnings Flash
FY ending Mar 2025
EDINET
2024-11-13
Semi-Annual Securities Report
Period: Apr 2024 – Mar 2025
TDnet
2024-08-08
Q1 Earnings Flash
FY ending Mar 2025
EDINET
2024-06-28
Annual Securities Report
Period: Apr 2023 – Mar 2024
EDINET
2024-02-09
Quarterly Securities Report
Period: Oct 2023 – Dec 2023
EDINET
2023-11-10
Quarterly Securities Report
Period: Jul 2023 – Sep 2023
EDINET
2023-08-10
Quarterly Securities Report
Period: Apr 2023 – Jun 2023
EDINET
2023-06-28
Annual Securities Report
Period: Apr 2022 – Mar 2023
EDINET
2023-02-10
Quarterly Securities Report
Period: Oct 2022 – Dec 2022
EDINET
2022-11-11
Quarterly Securities Report
EDINETAmended
2022-08-30
Amended Annual Securities Report
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