Data update history
July 22, 2026
Posted financials
Added Form 990 for fiscal year 2025
July 11, 2025
Posted financials
Added Form 990 for fiscal year 2024
July 2, 2025
Used new vendors
Identified 1 new vendor, including
January 10, 2025
Posted financials
Added Form 990 for fiscal year 2023
November 25, 2023
Posted financials
Added Form 990 for fiscal year 2021
Nonprofit Types
Grantmaking organizationsChapter / child organizationsCharities
Issues
HealthDiseases and disorders
Characteristics
Legally formed as trustProvides grantsTax deductible donationsNo full-time employees
General information
- Address
- PO Box 803878
- Chicago, IL 60680
- County
- Cook County, IL
- Phone
- (312) 630-6000
IRS details
- EIN
- 36-3999034
- Fiscal year end
- December
- Taxreturn type
- Form 990
- Year formed
- 1993
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- T30: Public Foundations
- NAICS code, primary
- 813211: Grantmaking Foundations
- Parent/child status
- Subordinate organization
California AB-488 details
- AB 488 status
- May Operate or Solicit for Charitable Purposes
- Charity Registration status
- Registered - Corporate Trustee
- FTB status revoked
- Not revoked
- AG Registration Number
- 003029
- FTB Entity ID
- None yet
- AB 488 data last updated ("as-of") date
- 2026-08-19
Free account sign-up
Want updates when William M and Rosina F Harding Foundation has new information, or want to find more organizations like William M and Rosina F Harding Foundation?
Create free Cause IQ account