AUM
Estimated $1-2B (based on net worth and foundation assets)
Principals
4
Principal Net Worth
$1.2B
Data Flags
Japanese founding family (Bridgestone), significant art philanthropy
Ishibashi Family Office
SFOHigh ConfidenceTokyo, Japan
Last verified: Jan 17, 2026
Details
- Source of Wealth
- Automotive, Tires (Bridgestone Corporation founding family)
- Assets Under Management
- Estimated $1-2B (based on net worth and foundation assets)
- Source File
- research/organizations/ishibashi-family-office.md
- UID
- fo-ishibashi-family-office
Also Known As
Hiroshi Ishibashi Family OfficeIshibashi Foundation Family OfficeBridgestone Family Office (historical)
Principals (4)
Team Members (5)
Related Entities (2)
Relationship Strength
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Sources (6)
- https://www.forbes.com/profile/hiroshi-ishibashi/
- https://www.ishibashi-foundation.or.jp/en/about/overview/
- https://en.wikipedia.org/wiki/Sh%C5%8Djir%C5%8D_Ishibashi
- https://www.mfa.org/news/ishibashi-foundation-assistant-curator
- https://www.red-dot.org/magazine/interview-hiroshi-ishibashi
- https://www.artizon.museum/en/
Changelog
- 2026-01-17Upgraded to High confidence - Updated net worth to $1.22B (Forbes Japan's 50 Richest 2025), verified #48 ranking, added Artizon Museum details, family legacy information, MFA Boston connection
- 2026-01-16Enriched with family history, founding legacy, Ishibashi Foundation details, Artizon Museum, art patronage focus, updated confidence to Medium
- 2026-01-15Auto-generated from principal Hiroshi Ishibashi