Data update history
July 22, 2026
Posted financials
Added Form 990PF for fiscal year 2025
April 6, 2026
Posted financials
Added Form 990PF for fiscal year 2024
August 12, 2024
Posted financials
Added Form 990PF for fiscal year 2023
March 7, 2024
Posted financials
Added Form 990PF for fiscal year 2022
November 25, 2023
Posted financials
Added Form 990PF for fiscal year 2021
Nonprofit Types
Grantmaking organizationsPrivate foundationsPrivate non-operating foundationsCharities
Issues
Education
Characteristics
Provides grantsState / local levelTax deductible donationsNo full-time employees
General information
- Address
- Hemenway Barnes PO Box 961209
- Boston, MA 02196
- Metro area
- Boston-Cambridge-Newton, MA-NH
- County
- Suffolk County, MA
- Phone
- (617) 227-7940
IRS details
- EIN
- 04-6652923
- Fiscal year end
- December
- Taxreturn type
- Form 990-PF
- Year formed
- 1991
- Eligible to receive tax-deductible contributions (Pub 78)
- Yes
Categorization
- NTEE code, primary
- T20: Private Foundations
- NAICS code, primary
- 813211: Grantmaking Foundations
- Parent/child status
- Independent
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