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Overview

Information & Communication

SE Holdings and Incubations Co.,Ltd.

SE Holdings & Incubations Co., Ltd. is a pure holding company overseeing five consolidated subsidiaries spanning publishing, corporate services, software/network, education/HR, and investment. Its core subsidiary, Shoeisha Co., Ltd., publishes IT, business, design, and culture-related books, e-books, and web magazines, while also operating IT engineer-focused events and direct sales platforms. Other subsidiaries provide content marketing and owned media support (SE Design), web service and app development (SE Mobile & Online), medical-sector job placement and IT personnel training (SE Plus), and securities/real estate investment (SE Investment).

Market Cap

¥7.53B

US$48.0M

¥7.78B

US$49.6M

Stock¥504▼-1.18%

US$1 = ¥156.80 (2026-10-23)

LTM EV/EBITDA

7.2

LTM EV/EBIT

7.6

LTM PER

10.7

LTM PBR

0.6

Stock vs TOPIX (1Y, base=100)vs TOPIX ▲+15.3%pt

Oct 24, 25 – Oct 23, 26StockTOPIX

1Oct 27, 25Performance evaluation from interim earnings

2Dec 2, 25Evaluation of continued strong investment business

3Jan 28, 26Positive reaction after Q3 earnings announcement

MC → EV Bridge

AI Briefing

Generating insights…

Performance & Balance

Revenue 5Y (¥B)

EBITDA 5Y (¥B)

Net Income 5Y (¥B)

Capital Structure

77%

23%

EquityD/E 0.30xDebt

Liquidity vs Debt 5Y (¥B)▼ Net Debt

CashInv. Sec.Debt

Shareholders

Top 10 hold 66.7%

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

Koji HAYAMI

18.26%

INTERACTIVE BROKERS LLC (Standing Proxy: Interactive Brokers Securities Japan Inc.)

14.81%

Koichi SHINOZAKI

6.13%

Japan Securities Finance Co.,Ltd.

5.42%

CACEIS BK ES IICS CLIENTS (Standing Proxy: The Hongkong and Shanghai Banking Corporation Limited, Tokyo Branch)

5.07%

Mikio SASAKI

5.05%

SBI SECURITIES Co., Ltd.

4.71%

Hikari Tsushin KK Investment Business Limited Liability Partnership (General Partner: Hikari Tsushin, Inc.)

4.47%

Nomura Securities Co., Ltd.

1.70%

NATIONAL FINANCIAL SERVICES LLC (Standing Proxy: Citibank, N.A., Tokyo Branch)

1.10%

Management

6 officers

Koji HAYAMI

Representative Director, President

Apr 1989 Joined Kyowa Bank, Ltd. (now Resona Bank, Ltd.) Dec 1993 Joined the Company Apr 1995 Appointed General Manager, Game Development Division Jun 1995 Appointed Director Apr 1996 Appointed Representative Director, President (current) Mar 2000 Appointed Director, Gaiax Co., Ltd. Nov 2001 Appointed Director, Shoeisha Jinzai Center Co., Ltd. (now SE Plus Inc.) Oct 2002 Appointed Director, 800TeleServices Holding Limited (current) Oct 2006 Appointed Representative Director, President, SE Mobile & Online Inc. Apr 2011 Appointed Representative Director, President, SE Investment Co., Ltd. (current)

1967-01-09

Mikio SASAKI

Director, Executive Vice President

Apr 1985 Joined Hirasawa Communications Co., Ltd. Jun 1988 Joined the Company Jun 1994 Appointed Director, General Manager, Communication Design Division Apr 1997 Appointed Director, General Manager, Publishing Division Jun 1999 Appointed Director, Executive Vice President (current) Nov 2001 Appointed Representative Director, President, Shoeisha Jinzai Center Co., Ltd. (now SE Plus Inc.) Oct 2006 Appointed Representative Director, President, Shoeisha Co., Ltd.

1959-10-28

Koichi SHINOZAKI

Director, Executive Vice President

Apr 1978 Joined Mukai Shutaro Design Laboratory Ltd. Feb 1980 Joined Hirasawa Communications Co., Ltd. Oct 1986 Joined Arts Co., Ltd. Apr 1987 Appointed Director, Arts Co., Ltd. Jul 1988 Joined the Company May 1989 Appointed Director Apr 1990 Part-time Lecturer, Musashino Art University Apr 1993 Appointed Director, Executive Vice President (current) Apr 1997 Appointed Director, Executive Vice President, General Manager, Communication Design Division Nov 2001 Appointed Director, Shoeisha Jinzai Center Co., Ltd. (now SE Plus Inc.) Oct 2006 Appointed Representative Director, President, SE Design Co., Ltd. (current)

1955-02-24

Shunichi SATA

Director, Audit and Supervisory Committee Member

Apr 1992 Joined Sumitomo Bank, Ltd. (now Sumitomo Mitsui Banking Corporation) Feb 1997 Joined the Company Jan 1998 Appointed Full-time Audit & Supervisory Board Member Jun 1999 Appointed Director, General Manager, Administration Division Apr 2000 Appointed Director, General Manager, Software Solutions Division Sep 2002 Resigned from the Company Apr 2003 Appointed Representative Director, President, ComponentSource Co., Ltd. (current) Jun 2006 Appointed Director Jun 2018 Appointed Director, Audit and Supervisory Committee Member (current)

1969-08-02

Takanori IIZUKA

Outside Director, Audit and Supervisory Committee Member

Mar 1996 Joined Harada, Ozaki & Hattori Law Office (now Ozaki Law Office) Jun 1998 Appointed Audit & Supervisory Board Member, the Company Apr 2009 Joined Iizuka Law Office (current) Jun 2018 Appointed Outside Director, Audit and Supervisory Committee Member, the Company (current) Jun 2021 Appointed Outside Director, Hoshi Iryo Sanki Co., Ltd. (current)

1966-06-01

Minoru HIROOKA

Outside Director, Audit and Supervisory Committee Member

Oct 1997 Joined Chuo Audit Corporation (renamed Chuo Aoyama Audit Corporation, then Misuzu Audit Corporation; dissolved Jul 2007) May 2001 Registered as Certified Public Accountant Aug 2007 Joined ShinNihon Audit Corporation (now EY ShinNihon LLC) Jan 2009 Established Hirooka CPA Office and became its Head (current) Jan 2015 Established Hirooka Office Co., Ltd. and became Representative Director (current) Jun 2018 Appointed Outside Director, Audit and Supervisory Committee Member, the Company (current)

1971-07-08

Large Shareholding Reports

No filings

Disclosures

No disclosures

Primary Source Filings

TDnet

2026-10-22

Q2 Earnings Flash

FY ending Mar 2027

SE Holdings and Incubations Co.,Ltd.

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SE Holdings and Incubations Co.,Ltd.

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