William Rosenberg
The William Rosenberg Family Foundation is a private 501(c)(3) foundation established in June 1986. The organization maintains offices in Snowmass Village, Colorado and Boston, Massachusetts, operating as a family foundation focused on philanthropic grantmaking.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$9.6M
+12.4% YoY
Annual Giving
$467K
-87.1% YoY
Grant Count
33
+0.0% YoY
Avg Grant Size
$14K
-87.1% YoY
Mission & Focus Areas
The foundation's primary funding priorities include:
- Education
- Philanthropy, Voluntarism & Grantmaking
- Human Services
Grantmaking
The foundation primarily funds organizations in Massachusetts, Florida, and Colorado.
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
Assets & Revenue (2024):
- Total assets: $9,550,311
- Total giving: $467,031
Assets & Revenue (2023):
- Total assets: $8.5 million
- Total expenses: $4.16 million
- Revenue: $29.9k
Holdings: The foundation maintains publicly traded securities valued at $3.7 million as of 2021.
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $9,550,311 | $8,495,324 | $11,517,219 |
| Revenue | $778,359 | $29,851 | $362,372 |
| Expenses | $823,351 | $4,156,761 | $1,090,355 |
| Qualifying Distributions | $694,112 | $3,958,765 | $934,660 |
| Net Investment Income | $650,315 | $95,494 | $225,677 |
| Distributable Amount | $523,608 | $592,510 | $725,505 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
213 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Leadership team and compensation from IRS filings
The foundation's governance includes the following individuals in leadership and director roles:
- Ann M Rosenberg — President/Director
- Donald N Rosenberg — Co-Treasurer/Director
- James Rosenberg — Co-Treasurer/Director
- Robert M Rosenberg — Director
- Carolyn A Ryan — Director
- Jennifer Fox — Director
- Jill Gottlieb — Director
- John M Rosenberg — Director
- Lauren M Neill — Director
- Michael Rosenberg — Director
- Michael Ryan — Director
- Tara-Lynn Boreham Rosenberg — Director
Compensation Overview
From 2024 IRS filing
From 2024 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| ANN M ROSENBERG | PRESIDENT/DIRECTOR | 1 | — |
| BARBARA ROSENBERG | DIRECTOR | 1 | $2,500 |
| CAROL SILVERSTEIN | DIRECTOR | 1 | $20,000 |
| CAROLYN A RYAN | DIRECTOR | 1 | — |
| DONALD N ROSENBERG | CO-TREASURER/DIRECTOR | 1 | $20,000 |
| JAMES ROSENBERG | CO-TREASURER/DIRECTOR | 1 | $21,900 |
| JENNIFER FOX | DIRECTOR | 1 | $7,500 |
| JILL GOTTLIEB | DIRECTOR | 1 | $7,500 |
| JOHN M ROSENBERG | DIRECTOR | 1 | $2,500 |
| LAUREN M NEILL | DIRECTOR | 1 | $7,500 |
| MICHAEL ROSENBERG | DIRECTOR | 1 | $21,900 |
| REBECCA R ROSENBERG | DIRECTOR | 1 | $2,500 |
| ROBERT M ROSENBERG | DIRECTOR | 1 | $20,000 |
| TARA-LYNN BOREHAM ROSENBERG | DIRECTOR | 1 | $2,500 |
| TYLER BEDNAR | DIRECTOR | 1 | $2,500 |
| VANESSA ROSENBERG | DIRECTOR | 1 | $2,500 |
| WYATT RYAN | DIRECTOR | 1 | — |
| WAYLON RYAN | DIRECTOR | 1 | — |
| JEFF ROSENBERG | DIRECTOR | 1 | $2,500 |
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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