Keizo Seki

Chairman at SEKI CO., LTD.

Net worth: 7 M $ as of 2026-09-29

79 year

Consumer Services

Profile

Keizo Seki is Chairman at Seki Co., Ltd. since 2017.
Mr. Seki is President & Representative Director at Koei Kosan YK since 1983.
Mr. Seki is President & Representative Director at Seki Kosan KK since 1992.
Mr. Seki is Representative Director at SPC Co., Ltd. (Seki) since 1998.
Mr. Seki is President & Representative Director at Media Press Setouchi KK since 2008.
Former positions include President & Representative Director at Kozutsumi Club YK and President & Representative Director at Coop Insatsu KK.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
SEKI CO., LTD. 18.97%	2026-03-30	855,200 ( 18.97% )	7 M $	2026-09-29

Keizo Seki active positions

Companies	Position	Start
SEKI CO., LTD.	Chairman	2017-03-31
Koei Kosan YK	President	1983-09-30
Seki Kosan KK	President	1992-05-31
SPC Co., Ltd. (Seki)	Director/Board Member	1998-05-31
Media Press Setouchi KK Media Press Setouchi KK Publishing: NewspapersConsumer Services Publishes newspaper	President	2008-02-29

All active positions of Keizo Seki

Former positions of Keizo Seki

Companies	Position	End
Kozutsumi Club YK Kozutsumi Club YK Kozutsumi Club YK is a company based in Matsuyama, Japan.	President	-
Coop Insatsu KK	President	-

See the detail of Keizo Seki's experience

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Keizo Seki's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	7
Seki Co., Ltd. Seki Co., Ltd. Publishing: Books/MagazinesConsumer Services Provides publishing and printing services	Consumer Services
Koei Kosan YK
Kozutsumi Club YK Kozutsumi Club YK Kozutsumi Club YK is a company based in Matsuyama, Japan.
Coop Insatsu KK
Seki Kosan KK
SPC Co., Ltd. (Seki)
Media Press Setouchi KK Media Press Setouchi KK Publishing: NewspapersConsumer Services Publishes newspaper	Consumer Services