LONSEAL CORPORATION · ロンシール工業株式会社
Ownership & governance
Executives 5Directors 9Avg age 61Avg tenure 5.8y
HN
Hideaki Nishioka
President
Age 63Since 2023-05-31Profile →
+13
Executives5
Board of directors9
AT
Akio Tokiwa
Director/Board Member
Age 66Since 2017-05-31
NI
Naohiko Iseki→
Director/Board Member
Age 63Since 2017-05-31
OH
Osamu Hasanuma→
Director/Board Member
Age 65Since 2019-05-31
HK
Hideo Kokuzawa→
Director/Board Member
Age 60Since 2020-05-31
AM
Atsushi Maeda
Director/Board Member
Age 65Since 2020-05-31
TK
Toshiki Kaminaga
Director/Board Member
Age 71Since 2021-06-28
HN
Hideaki Nishioka→
Director/Board Member
Age 63Since 2023-05-31
HW
Hideki Watanabe
Director/Board Member
Age 31Since 2022-05-31
Shareholders5
| Name | Stake | Shares |
|---|---|---|
| TOSOH CORPORATION | 37.99 % | 1,757,000 |
| MIZUHO FINANCIAL GROUP, INC. | 4.562 % | 211,000 |
| TOKIO MARINE HOLDINGS, INC. | 1.967 % | 91,000 |
| Lonseal Employee Stock Ownership | 1.189 % | 55,000 |
| Nippon Life Insurance Co. | 1.146 % | 53,000 |
Catalog · 2026-07-09
Registry officers16
| Name | Role | Since | Shares |
|---|---|---|---|
| Hideo Kokuzawa | Chief Administrative Officer | 2020-05-31 | - |
| Honjo Yasushi | Chief Tech/Sci/R&D Officer | — | - |
| Osamu Hasanuma | Chief Tech/Sci/R&D Officer | 2021-05-31 | - |
| Hideaki Nishioka | President | 2023-05-31 | - |
| Naohiko Iseki | Human Resources Officer | 2017-05-31 | - |
| 井 関 直 彦 | 取締役常務執行役員人事・総務部、経理部、監査室、ＣＳＲ推進室担当 | 2017-06-01 | - |
| 前 田 篤 | 取締役(監査等委員) | 2016-06-01 | - |
| 小 池 敦 裕 | 取締役 | 2021-06-01 | - |
Registry · as of 2026-07-09
Institutional (13F)
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Fund membership
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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.