Thomas G Stemberg Charitable Foundation
Only null% goes to programs Strong reserves Declining revenue
Thomas G Stemberg Charitable Foundation is a 501(c)(3) organization based in Boston, Massachusetts, registered in 2007, with $569,748 in FY2024 revenue. CharityIndex grades it C+.
50 Post Office Square, Boston, MA, 02110 EIN 20-5672425 Since 2007
Revenue (FY2024)
$570K
▲ 151.5% vs prior year
Philanthropy median: $168K
Expenses (FY2024)
$502K
Net assets
$6.5M
Employees
—
CharityIndex rating
One independent A+ to F grade from four published criteria, each scored separately from IRS filings and combined by weight.
C+
—Program efficiency40% of the ratingNo expense breakdown in filings
Measures how much of every dollar spent actually reaches programs, plus what it costs to raise $100 of donations. The worse of the two measures sets the letter (85%+ to programs is an A; under $15 to raise $100 is an A), averaged over the three most recent filings. Not scored for Thomas G Stemberg Charitable Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
B+Financial health25% of the rating154 mo reserves · +12% margin
Measures whether the organization is built to last: how many months its reserves would cover expenses (3+ months earns an A-range score, but hoarding 5+ years of budget is capped) and whether it runs a surplus or a deficit. For Thomas G Stemberg Charitable Foundation: 154 mo reserves · +12% margin earns a B+ on this criterion. See the exact thresholds →
—Governance25% of the ratingNot reported in this filing type
Checks how the organization is run, from its own Form 990: an independent board majority, a board of five or more, conflict-of-interest, whistleblower and document-retention policies, and independently audited financials. The share of disclosed checks that pass sets the letter. Not scored for Thomas G Stemberg Charitable Foundation— this filing type doesn't report it, and the rating simply skips it (never counts it against the organization). See the exact thresholds →
DTransparency10% of the rating1 of 5 disclosure signals
Counts five disclosure signals: a recent filing, a mission statement, program descriptions, a listed website, and the full expense breakdown. More disclosure, better letter. For Thomas G Stemberg Charitable Foundation: 1 of 5 disclosure signals earns a D on this criterion. See the exact thresholds →
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Contact & location
- Address
- 50 Post Office Square, Boston, MA, 02110
- City
- Boston
- State
- Massachusetts
- Subcategory
- Private Foundations
Financial trends
Revenue declined from $610K (FY2015) to $570K (FY2024) across 10 reported years.
Financial snapshot
Financial health & position (FY2024)
Liabilities $0Net assets $6.5M
Operating margin
11.9%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$6.5M
Total liabilities
$0
Net assets
$6.5M
Financials by year
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2024 | $569,748▲151% | $501,784▲9.4% | $6,458,555▲1.1% | $6,458,555▲1.1% | 990PF |
| 2023 | $226,550▼53.1% | $458,748▼36.0% | $6,390,591▼3.5% | $6,390,591▼3.5% | 990PF |
| 2022 | $482,998▼51.7% | $716,294▲66.4% | $6,622,789▼3.0% | $6,622,789▼3.0% | 990PF |
| 2021 | $1,000,014▲102% | $430,461▲8.5% | $6,829,868▲8.7% | $6,829,868▲8.7% | 990PF |
| 2020 | $494,754▲11.2% | $396,838▼4.2% | $6,281,956▲1.3% | $6,281,956▲1.3% | 990PF |
| 2019 | $444,993▲29.5% | $414,082▲1.0% | $6,204,289▲1.3% | $6,204,289▲1.3% | 990PF |
| 2018 | $343,668▼75.2% | $409,831▼1.9% | $6,126,069▼1.0% | $6,126,069▼1.0% | 990PF |
| 2017 | $1,385,361▲370% | $417,948▲10.7% | $6,188,563▲19.7% | $6,188,563▲19.7% | 990PF |
| 2016 | $294,806▼51.7% | $377,690▲5.0% | $5,168,765▼1.8% | $5,168,765▼1.8% | 990PF |
| 2015 | $609,942 | $359,569 | $5,263,435 | $5,263,435 | 990PF |
Original Form 990 PDFs (the Form column) are served by ProPublica Nonprofit Explorer, as filed with the IRS. Create a free account to download the CSV report.
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Frequently asked questions
- Is Thomas G Stemberg Charitable Foundation a legitimate nonprofit?
- Yes. Thomas G Stemberg Charitable Foundation is a 501(c)(3) organization registered with the U.S. Internal Revenue Service under EIN 20-5672425, based in Boston, Massachusetts. Donations are tax-deductible.
- What is Thomas G Stemberg Charitable Foundation's EIN?
- Thomas G Stemberg Charitable Foundation's Employer Identification Number (EIN) is 20-5672425.
- How much revenue does Thomas G Stemberg Charitable Foundation report?
- Thomas G Stemberg Charitable Foundation reported $569,748 in total revenue on its fiscal year 2024 IRS Form 990 filing.
- What financial grade does Thomas G Stemberg Charitable Foundation have?
- CharityIndex grades Thomas G Stemberg Charitable Foundation C+, based on financial health (reserves and operating margin).
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Data for Thomas G Stemberg Charitable Foundation (EIN 20-5672425) comes from the IRS Business Master File and e-filed Form 990 returns, via CharityIndex. Figures reflect what the organization reported to the IRS for each fiscal year.