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AUM

Unknown (net worth ~$4.4B)

Principals

5

Principal Net Worth

$13.7B

Data Flags

H-E-B grocery fortune heir, Eleanor Crook Foundation, Texas billionaire; Net worth verified Forbes 2025, Forbes 400 Sep 2025

Crook Family Office

SFOHigh Confidence

San Marcos, Texas

Last verified: Jan 17, 2026

Details

Source of Wealth
Retail (Grocery - H-E-B)
Assets Under Management
Unknown (net worth ~$4.4B)
Source File
research/organizations/crook-family-office.md
UID
fo-crook-family-office

Also Known As

Eleanor Butt Crook Family OfficeCrook CapitalEleanor Butt Crook & familyECF (Eleanor Crook Foundation)

Principals (5)

Charles ButtOWNS
$9.5B
Eleanor Butt CrookFounder/Principal, H-E-B grocery heiressOWNS
$4.2B
Florence ButtH-E-B founderOWNS
Ambassador William H. CrookCo-founded ECFOWNS
Butt familyH-E-B ownersOWNS

Team Members (3)

Elon MuskPrincipal
WORKS_AT
Excellence InsiderTitle TBD
WORKS_AT
Lyndon BainesTitle TBD
WORKS_AT

Related Entities (3)

Eleanor Crook FoundationFoundation

Philanthropic vehicle (co-founder) Founded 1997 Focus on global child nutrition

Family FoundationFoundation
H-E-B (H-E Butt Grocery Company)Subsidiary

Texas grocery chain (family stake) 455+ stores in Texas and Mexico $45+ billion annual revenue Family owns ~90%

Relationship Strength

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Sources (5)

Changelog

  • 2026-01-17Verification upgrade to High confidence; Forbes 400 Sep 2025 confirms $4.2B; age 93; H-E-B family among richest Americans
  • 2026-01-16Enriched with biography, H-E-B inheritance, family members, Eleanor Crook Foundation (1997), late husband Ambassador Crook, net worth $4.4B
  • 2026-01-15Auto-generated from principal Eleanor Butt Crook & family

Engagement & Preferences