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Asahi Rubber

5162.TTSE STANDARDRubber Products
Major holders (5%+) · 3
HolderStakeChangeFiled
TAMASU CO., LTD.9.18%—2026-08-31
SHINBUNKINZOKU CO., LTD.8.47%-1.52pp2026-06-16
Shuichi Tsumuraya, Chairman of ASAHI RUBBER Business Partner Stock Ownership Association5.03%—2026-07-24

Each holder's own ratio from its most recent large-shareholding report.

Former and minor holders (below 5%) · 1
HUANG SHENGBO4.31%2026-06-16
Ownership history · 8
FiledHolderRatioChangePurpose
2026-08-31AmendedTAMASU CO., LTD.2026-08-31 · amended9.18%newStable shareholder; Long-term holding
2026-07-24Shuichi Tsumuraya, Chairman of ASAHI RUBBER Business Partner Stock Ownership Association2026-07-245.03%newBusiness / capital relationship
2026-06-16HUANG SHENGBO2026-06-164.31%+1.52ppPure investment
2026-06-16SHINBUNKINZOKU CO., LTD.2026-06-168.47%-1.52ppMaterial proposals to management (activist); Pure investment
2026-05-14AmendedHUANG SHENGBO2026-05-14 · amended2.79%newPure investment
2026-05-14AmendedSHINBUNKINZOKU CO., LTD.2026-05-14 · amended9.99%+2.30ppMaterial proposals to management (activist); Pure investment
2026-04-03SHINBUNKINZOKU CO., LTD.2026-04-037.69%+1.15ppMaterial proposals to management (activist); Pure investment
2025-10-20SHINBUNKINZOKU CO., LTD.2025-10-206.54%newMaterial proposals to management (activist); Pure investment

Each holder in 5% reports, joint holders included. Purpose is classified from the filed text.