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Overview

Machinery

Akasaka Diesels Ltd.

Akasaka Diesels is a Japanese manufacturer of marine diesel engines, producing both proprietary 4-stroke engines and licensed 2-stroke engines for cargo ships, transport vessels, and fishing boats operating domestically and internationally. Leveraging its engine manufacturing expertise, the company also produces castings, machined components, and industrial/civil engineering machinery. The company is additionally developing next-generation technologies including methanol dual-fuel engines and hydrogen generation systems using sodium borohydride (SBH).

Market Cap

¥3.45B

US$22.0M

¥0.84B

US$5.35M

Stock¥2,581▼-0.96%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

2.5

LTM EV/EBIT

LTM PER

30.8

LTM PBR

0.3

Stock vs TOPIX (1Y, base=100)vs TOPIX ▼-51.7%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Oct 27, 25Strong Q3 results, full-year guidance raised

MC → EV Bridge

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Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

83%

EquityD/E 0.21xDebt

Liquidity vs Debt 5Y (¥B)▲ Net Cash

CashInv. Sec.Debt

Shareholders

Top 10 hold 44.0%

as of 2026-03-31 · Source: Annual Securities Report

Akasaka Kyoei-kai

9.06%

DNB BANK ASA CLIENT ACCOUNT (Standing Proxy: Citibank, N.A., Tokyo Branch)

7.12%

Tokyo Akasaka Kyoei-kai

5.45%

The Shizuoka Bank, Ltd.

4.71%

Mizuho Bank, Ltd.

4.71%

Haruhisa AKASAKA

3.37%

Japan Engine Corporation

3.02%

Shunnan Tekko Co., Ltd.

2.56%

Yuichiro AKASAKA

2.09%

Custody Bank of Japan, Ltd. (Trust Account E)

1.91%

Management

11 officers

Katsuhiko SAKAGUCHI

Representative Director, President

Apr 1985 Joined Mitsubishi Heavy Industries, Ltd., Kobe Shipyard Apr 2013 Appointed Chief Engineer, Marine Diesel Department, Marine Machinery & Engine Business Division, Prime Mover Business Headquarters, Mitsubishi Heavy Industries, Ltd. Oct 2014 Transferred to Akasaka Tekkosho, Ltd.; appointed Department Manager, assigned to Sales Headquarters Jul 2015 Appointed Executive Officer, Deputy General Manager of Product Headquarters and Group Leader, Service Group Jun 2016 Appointed Director, Executive Officer, General Manager of Product Headquarters Jun 2018 Appointed Managing Director, Executive Officer, General Manager of Technology Headquarters Jun 2021 Appointed Managing Director, Executive Officer, General Manager of Technology & Manufacturing Headquarters Apr 2023 Appointed Representative Director, President (current)

1959-06-21

Yoshiyuki TSUKAMOTO

Representative Director, Senior Managing Executive Officer, General Manager of Administration Headquarters

Apr 1983 Joined Shizuoka Bank, Ltd. Apr 2013 Appointed Branch Manager, Kikugawa Branch, Shizuoka Bank, Ltd. Jul 2014 Seconded to Akasaka Tekkosho, Ltd.; appointed Department Manager, assigned to General Affairs Headquarters Jul 2015 Appointed Executive Officer, Deputy General Manager of General Affairs Headquarters in charge of Accounting Jun 2016 Appointed Director, Executive Officer, General Manager of General Affairs Headquarters Jun 2018 Appointed Managing Director, Executive Officer, General Manager of General Affairs Headquarters Apr 2023 Appointed Representative Director, Senior Managing Executive Officer, General Manager of General Affairs Headquarters Jul 2023 Appointed Representative Director, Senior Managing Executive Officer, General Manager of Administration Headquarters (current)

1961-01-16

Mamoru WATASE

Managing Director, Managing Executive Officer, General Manager of Quality Assurance Headquarters

Oct 1985 Joined Akasaka Tekkosho, Ltd. Jul 2012 Appointed Department Manager, Technology Group Jul 2016 Appointed Executive Officer, Deputy General Manager of Product Headquarters Jun 2018 Appointed Director, Executive Officer, General Manager of Manufacturing Headquarters Jun 2021 Appointed Director, Executive Officer, General Manager of Quality Assurance Headquarters Apr 2023 Appointed Managing Director, Managing Executive Officer, General Manager of Quality Assurance Headquarters (current)

1962-04-18

Takao SAITO

Director, Executive Officer, General Manager of Sales Headquarters

Apr 1984 Joined Akasaka Tekkosho, Ltd. Jul 2016 Appointed Department Manager, Sales Department Jul 2018 Appointed Executive Officer, Deputy General Manager of Sales Headquarters Jun 2022 Appointed Director, Executive Officer, General Manager of Sales Headquarters (current)

1965-11-13

Toru KURODA

Director, Executive Officer, General Manager of Technology Headquarters

Jul 2009 Joined Akasaka Tekkosho, Ltd. Jul 2022 Appointed Executive Officer, Deputy General Manager of Technology Headquarters Jul 2023 Appointed Executive Officer, General Manager of Technology Headquarters Jun 2024 Appointed Director, Executive Officer, General Manager of Technology Headquarters (current)

1968-03-04

Haruhisa AKASAKA

Director

Apr 2001 Joined Akasaka Tekkosho, Ltd. Jul 2009 Appointed Assistant to General Manager, Manufacturing Headquarters Jan 2010 Appointed Assistant to General Manager, Technology Headquarters Jun 2010 Appointed Director, Assistant to General Manager, Sales Headquarters Jan 2011 Appointed Director, General Manager of Sales Department Jun 2014 Appointed Managing Director, in charge of Sales Jun 2016 Appointed Representative Director, President Jun 2018 Appointed Representative Director, President and Executive Officer Jul 2019 Appointed Director (current) Jul 2019 Appointed Representative Director, Shunnan Tekko Co., Ltd. Oct 2023 Appointed Director, Shunnan Tekko Co., Ltd.

1971-09-27

Yasuko NISHIMURA

Director

May 1997 Opened Nishimura Judicial Scrivener Office Jan 2008 Established Tsukasa Judicial Scrivener Corporation, appointed Representative (current) Apr 2013 Appointed Director and Shizuoka Prefectural Branch Chief, General Incorporated Association Japan Small and Medium Enterprise Management Support Specialists Association Dec 2014 Established CREASTYLE Co., Ltd., appointed Representative (current) Jul 2015 Established CREAFARM Co., Ltd., appointed Representative (current) Jun 2016 Appointed Director of the Company (current) Feb 2018 Established Fujinokuni Bussan Co., Ltd., appointed Representative (current) Jun 2024 Appointed Outside Director, ITOHAM YONEKYU HOLDINGS INC. Jun 2025 Appointed Outside Director (Audit and Supervisory Committee Member), ITOHAM YONEKYU HOLDINGS INC. (current)

1968-06-04

Toshikazu NOSUE

Director

Apr 1987 Registered as Attorney-at-law Dec 1990 Joined Kato Law & Patent Office (now Shizuoka Nozomi Law & Patent Office) (current) Mar 1996 Registered as Attorney-at-law, New York State, U.S.A. Oct 1996 Registered as Patent Attorney Apr 2005 Appointed Outside Audit & Supervisory Board Member, MISUMI Group Inc. Mar 2015 Appointed Outside Director, Shizuoka Gas Co., Ltd. Jun 2015 Appointed Outside Director (Audit and Supervisory Committee Member), Lec Inc. (current) Jun 2018 Appointed Director of the Company (current) Mar 2023 Appointed Outside Director, Aikawa Iron Works Co., Ltd. (current) Jun 2024 Appointed Outside Audit & Supervisory Board Member, Shizuoka Railway Co., Ltd. (current)

1960-08-15

Keisuke MISAWA

Audit & Supervisory Board Member (Full-time)

Feb 1981 Joined Akasaka Tekkosho, Ltd. Jul 2007 Appointed Department Manager, Technology Development Group Jul 2008 Appointed Deputy General Manager of Technology Headquarters Jun 2012 Appointed Executive Officer, Deputy General Manager of Product Headquarters in charge of Technology and Products Jun 2014 Appointed Director, Executive Officer, General Manager of Product Headquarters Jun 2016 Appointed Managing Director Jun 2018 Appointed Advisor Jun 2019 Appointed Full-time Audit & Supervisory Board Member (current)

1955-03-09

Ryoji NAKANO

Audit & Supervisory Board Member

Apr 1979 Joined Mitsubishi Heavy Industries, Ltd. Dec 2008 Appointed Department Manager, Diesel Technology Department, Yokohama Works, Mitsubishi Heavy Industries, Ltd. Jun 2012 Appointed Director, General Manager of KU Technology Department, MHI Energy & Service Co., Ltd. (now MHI Forklift & Engine Turbo Holdings Co., Ltd.) Jul 2016 Appointed General Manager, General Affairs Department, S/E (Service Department, KU Technology), MHI Sagami Hightech Co., Ltd. Jun 2017 Appointed Audit & Supervisory Board Member of the Company (current)

1954-09-03

Yoshihiro NAGASAWA

Audit & Supervisory Board Member

Apr 1980 Joined Shizuoka Bank, Ltd. Apr 2010 Appointed Executive Officer, General Manager of Credit Examination Department, Shizuoka Bank, Ltd. Jun 2013 Appointed Managing Executive Officer, Shizuoka Bank, Ltd. Jun 2020 Appointed Director (part-time), Shizuoka Bank, Ltd.; Representative Director, Seigin Management Consulting Co., Ltd. Jul 2022 Appointed Advisor, Yaizu Suisan Kagaku Kogyo Co., Ltd. Jun 2023 Appointed Director (Audit and Supervisory Committee Member), Yaizu Suisan Kagaku Kogyo Co., Ltd. Jun 2024 Appointed Audit & Supervisory Board Member, Yaizu Suisan Kagaku Kogyo Co., Ltd. Jun 2025 Appointed Audit & Supervisory Board Member of the Company (current)

1956-11-30

Large Shareholding Reports

No filings

Disclosures

No disclosures

Primary Source Filings

TDnet

2026-08-06

Q1 Earnings Flash

FY ending Mar 2027

Akasaka Diesels Ltd.

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Akasaka Diesels Ltd.

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