Companies/JP/5282

GEOSTR CORPORATION · ジオスター株式会社

Ownership & governance

Executives 5Directors 6Avg age 63Avg tenure 5.5y
Minoru Hotta
President
Age 60Since 2024-03-31

Executives5

Minoru Hotta
President
Age 60Since 2024-03-31
Kazufumi Ishii
Chief Administrative Officer
——
Yasushi Sakuma
Chief Administrative Officer
Age 59Since 2016-11-30
Yoshinori Takamatsu
Chief Tech/Sci/R&D Officer
Age 63Since 2013-03-31
Naoto Sakamori
Comptroller/Controller/Auditor
Age 64Since 2024-05-31

Board of directors6

Atsushi Toki
Director/Board Member
Age 71Since 2016-05-31
Yoshinori Takamatsu
Director/Board Member
Age 63Since 2021-05-31
Yasushi Sakuma
Director/Board Member
Age 59Since 2021-05-31
Minoru Hotta
Director/Board Member
Age 60Since 2023-05-31
Kaoruko Ogasawara
Director/Board Member
Age 60Since 2024-05-31
Shoji Kuwayama
Director/Board Member
Age 70Since 2023-05-31

Shareholders5

NameStakeShares
NIPPON STEEL CORPORATION
43.03 %
13,567,000
HANWA CO., LTD.
4.792 %
1,511,000
GEOSTR CORPORATION
2.839 %
895,101
MM&KENZAI Corp.
2.379 %
750,000
Marubeni-Itochu Steel, Inc.
1.361 %
429,000

Catalog · 2026-07-09

Registry officers14

NameRoleSinceShares
中 西 謙 介監査役2023-06-01-
井 上 義 典取締役非常勤2016-06-01-
佐 久 間 靖取締役常務執行役員2016-12-01-
土 岐 敦 司取締役非常勤2016-06-01-
坂 森 直 人常勤監査役2024-06-01-
堀 田 穣代表取締役社長 営業本部長2018-06-01-
宇 田 川 德彦取締役執行役員生産本部長2026-04-01-
小 笠 原 薫 子取締役非常勤2015-08-01-

Registry · as of 2026-03-31

Institutional (13F)

Loading Form 13F holders…

Fund membership

Loading fund baskets…

Street consensus

Consensus none

Firm rows and rating mix from Yahoo Finance; mean target is Yahoo’s aggregate until OpenFilings derives consensus from broker rows.

Peers