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Overview
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SEIWA HOLDINGS Co.,Ltd.

Seiwa Holdings is a holding company that acquires and succeeds small and medium-sized manufacturing businesses facing succession challenges through M&A. The company supports its group companies' management through the proprietary 'Seiwa Platform,' which centralizes back-office functions and provides operational support in sales, manufacturing, and development. Its subsidiaries span diverse manufacturing sectors including welding and sheet metal fabrication, zinc plating, wire and cable manufacturing, cationic electrodeposition coating, and industrial machinery.

Market Cap
¥28.8B
US$183M
EV
¥32.0B
US$204M
Stock¥1,505▼-4.63%
US$1 = ¥156.80 (2026-10-23)
LTM EV/EBITDA
19.1
x
LTM EV/EBIT
25.8
x
LTM PER
31.7
x
LTM PBR
4.5
x
Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-9.6%pt
1001
Mar 27, 26 – Oct 23, 26StockTOPIX
1Oct 15, 26Q1 FY2027/05 earnings announced
MC → EV Bridge
28.8BUS$183MMarket Cap7.06BUS$45.0M+ Debt3.77BUS$24.1M− Cash0.00BUS$0.00M− Inv. Sec.32.0BUS$204MEV
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Performance & Balance
Revenue 5Y (¥B)
7.28US$46.4M'24/57.77US$49.5M'25/58.01US$51.1M'26/5
EBITDA 5Y (¥B)
1.07US$6.83M'25/51.93US$12.3M'26/5
Net Income 5Y (¥B)
0.28US$1.79M'24/50.33US$2.09M'25/51.08US$6.89M'26/5
Capital Structure
47%
53%
EquityD/E 1.11xDebt
Liquidity vs Debt 5Y (¥B)▼ Net Debt
CashInv. Sec.Debt
'24/52.90US$18.5M7.88US$50.3M'25/56.17US$39.3M5.95US$37.9M'26/5
Shareholders
Top 10 hold 81.5%
as of 2026-05-31 · Source: Annual Securities Report
1
Yudai NOMIYAMA
54.61%
2
Katsushi ISHIDA
7.14%
3
Custody Bank of Japan, Ltd. (Trust Account)
5.91%
4
Nomura Trust and Banking Co., Ltd. (Investment Trust Account)
3.96%
5
DBC No. 1 Investment Limited Partnership
2.50%
6
MSIP CLIENT SECURITIES (Standing Proxy: Morgan Stanley MUFG Securities Co., Ltd.)
2.40%
7
Morgan Stanley MUFG Securities Co., Ltd.
1.90%
8
NOMURA PB NOMINEES LIMITED OMNIBUS-MARGIN (CASHPB; Standing Proxy: Nomura Securities Co., Ltd.)
1.47%
9
Rakuten Securities, Inc. (Joint Account)
0.87%
10
BNP PARIBAS FINANCIAL MARKETS (Standing Proxy: BNP Paribas Securities (Japan) Limited)
0.78%
Management
6 officers
Yudai NOMIYAMA
Representative Director, President
Apr 2015 Joined Yugen Kaisha Seiwa Kogyo (now Seiwa Kogyo Co., Ltd.) Mar 2019 Representative Director, Yugen Kaisha Seiwa Kogyo (now Seiwa Kogyo Co., Ltd.) (current) Jun 2019 Representative Director, Tokai Coating Co., Ltd. Jul 2020 Representative Director, Kosei Sangyo Co., Ltd. Jan 2021 Representative Director, President, the Company (current) Mar 2021 Representative Director, Mie Kogyo Co., Ltd. Jun 2021 Representative Director, Hirano Seisakusho Co., Ltd. Sep 2021 Representative Director, Sanyo Denko Co., Ltd. Sep 2021 Representative Director, Tama Kako Co., Ltd. Feb 2022 Representative Director, Kaken Genex Co., Ltd. Mar 2022 Director, JOB Co., Ltd. (current) Apr 2022 Representative Director, Nihon Keiki Co., Ltd. Jun 2022 Representative Director, Kaishin Co., Ltd. Jun 2022 Director, Nihon Kogyo Co., Ltd. (current) Jul 2023 Representative Director, Kanaya Tosou Kogyosho Co., Ltd. (current) Jun 2024 Director, Hirano Seisakusho Co., Ltd. Aug 2024 Director, Tokai Coating Co., Ltd. Aug 2024 Representative Director, Fuji Shoji Co., Ltd. (current) May 2025 Representative Director, Fuji Mekki Kogyosho Co., Ltd. (current) Aug 2025 Director, Tama Kako Co., Ltd. Aug 2026 Representative Director, Hirano Seisakusho Co., Ltd. (current)
1992-04-13
Keisei IGAWA
Director and Vice President
Apr 2011 Joined Okaya & Co., Ltd. Nov 2019 Joined Deloitte Tohmatsu Consulting LLC (now Deloitte Tohmatsu LLC) Oct 2020 Joined Yugen Kaisha Seiwa Kogyo, General Manager, Management Planning Division Oct 2020 Director, Sanyo Denko Co., Ltd. (current) Dec 2020 Director, Kosei Sangyo Co., Ltd. (current) Jan 2021 Director, Chief Financial Officer, the Company (current) Mar 2021 Director, Mie Kogyo Co., Ltd. Jun 2021 Director, Hirano Seisakusho Co., Ltd. Sep 2021 Director, Tama Kako Co., Ltd. Sep 2021 President, Director, Sanyo Denko Co., Ltd. Feb 2022 Director, Kaken Genex Co., Ltd. Mar 2022 Audit & Supervisory Board Member, JOB Co., Ltd. (current) Apr 2022 Director, Nihon Keiki Co., Ltd. Jun 2022 Audit & Supervisory Board Member, Nihon Kogyo Co., Ltd. (current) Jul 2022 Director, Kaishin Co., Ltd. Jan 2023 Director and Vice President, the Company (current) Aug 2024 Director, Fuji Shoji Co., Ltd. (current) Jul 2026 Representative Director, Kaishin Co., Ltd. (current)
1989-01-05
Eiji KODAMA
Director
Apr 1986 Joined Mitsubishi Plastics, Inc. (now Mitsubishi Chemical Corporation) Apr 2005 Director, Hishie Sangyo Co., Ltd. (now J-Film Corporation) Apr 2010 Managing Director, Hishie Sangyo Co., Ltd. (now J-Film Corporation) Jun 2021 Director, Nakagawa Seidai Kako Co., Ltd. Jun 2024 Advisor, Nakagawa Seidai Kako Co., Ltd. (current) Jun 2024 Director, the Company (current) Jun 2024 Representative Director, Hirano Seisakusho Co., Ltd. Jun 2024 Director, Kaishin Co., Ltd. (current) Jan 2025 Representative Director, Kaishin Co., Ltd.
1963-06-20
Yusuke MIYAKE
Director (Full-time Audit and Supervisory Committee Member)
Feb 2014 Joined Azusa Audit LLC Jul 2022 Representative, Yusuke Miyake Certified Public Accountant Office (current) Jul 2022 Full-time General Manager, Accounting Division, the Company Aug 2022 Audit & Supervisory Board Member, the Company Aug 2025 Director (Full-time Audit and Supervisory Committee Member), the Company (current)
1990-01-24
Tetsuya KIMURA
Outside Director (Audit and Supervisory Committee Member)
Mar 1992 Joined Toyota Motor Corporation Apr 2013 Joined Asahi Iron Works Co., Ltd. Jun 2016 Representative Director, President, Asahi Iron Works Co., Ltd. (current) Sep 2016 Representative Director, President, i Smart Technologies Co., Ltd. (current) Apr 2020 Representative Director, iSAC Co., Ltd. Oct 2023 Director, the Company Aug 2025 Director (Audit and Supervisory Committee Member), the Company (current)
1967-03-16
Yuri HAYASHI
Outside Director (Audit and Supervisory Committee Member)
Dec 2007 Registered with Aichi Bar Association Dec 2007 Joined Nakamura Masanori Law Office (now Nakamura & Hayashi Law Office) Jan 2018 Partner, Nakamura & Hayashi Law Office (current) Oct 2023 Director, the Company Aug 2024 Audit & Supervisory Board Member, the Company Aug 2025 Director (Audit and Supervisory Committee Member), the Company (current)
1981-12-01
Large Shareholding Reports
Yudai NOMIYAMA
2026-05-07
59.80%→55.49%
Annual report (as of 2026-05-31): 54.61%
Resona Asset Management Co., Ltd.
2026-04-21
5.15%
Katsushi ISHIDA
2026-04-03
7.26%
Annual report (as of 2026-05-31): 7.14%
Yudai NOMIYAMA
2026-04-03
59.80%
Annual report (as of 2026-05-31): 54.61%
Disclosures
No disclosures
Primary Source Filings
TDnet
2026-10-14
Q1 Earnings Flash
FY ending May 2027
View PDF →
EDINET
2026-08-25
Annual Securities Report
Period: Jun 2025 – May 2026
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EDINET
2026-05-07
Large Shareholding Report
View PDF →
EDINET
2026-04-21
Large Shareholding Report
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TDnet
2026-04-14
Q3 Earnings Flash
FY ending May 2026
View PDF →
EDINET
2026-04-03
Large Shareholding Report
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EDINET
2026-04-03
Large Shareholding Report
View PDF →
EDINETAmended
2026-03-18
Amended Securities Registration Statement
View PDF →
EDINETAmended
2026-03-10
Amended Securities Registration Statement
View PDF →
EDINET
2026-02-20
Securities Registration Statement
View PDF →
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