Principals
8
Principal Net Worth
$2.0B
Data Flags
None - foundation website active with 2024-2025 data
William Gross Foundation
UnknownHigh ConfidenceLast verified: Dec 29, 2025
Details
- Source File
- research/organizations/william-gross-foundation.md
- UID
- fo-william-gross-foundation
Also Known As
**William H. Gross****Bill Gross****"The Bond King"** (industry nickname)**William and Sue Gross Foundation** (original foundation name, pre-2016)**The William, Jeff and Jennifer Gross Family Foundation** (current foundation name)
Principals (8)
William "Bill" GrossOWNS
$2BSue J. GrossPhilanthropistOWNS
Jennifer GrossFoundation Director, Blue Chip Foundation Co-founderOWNS
Nicholas Gross-OWNS
Jeff GrossFoundation Director, Professional PhotographerOWNS
Amy Schwartz GrossArtist, PhilanthropistOWNS
Peter StengaardBlue Chip Foundation Co-founderOWNS
Jenny GrossPhilanthropistOWNS
Team Members (7)
Known Associates (6)
Allianz SE
: PIMCO parent company (acquired 2000)
Cedars-Sinai Medical Center
: Major beneficiary
Dick Weil
: Former Janus Henderson CEO
Mohamed El-Erian
: Former PIMCO CEO and Co-CIO (relationship became strained)
Segerstrom Center for the Arts
: Major donor
UCI Medical Center
: Named facility after Gross donations
Relationship Strength
Loading relationships...
Sources (6)
Changelog
- 2025-12-29Major update - team research completed:
- 2025-12-11Initial research file created - William Gross, PIMCO founder, "Bond King", retired 2019, Giving Pledge signatory 2013, ~$2B net worth, major philanthropic focus on healthcare and arts
- 2025-12-11Updated Current Team section - added William and Amy Gross Family Foundation structure with leadership (Bill Gross and Amy Schwartz Gross), estimated staff size (under 5), advisors categories, added historical context about Sue Gross Foundation (pre-divorce entity), added research notes and recommended approaches including IRS Form 990 filings and major grant recipient donor relations contacts.