THE UNION OF CONCERNED SCIENTISTS INC

CAMBRIDGE, MA, 02138 (617) 547-5552 Est. 1973 EIN 04-2535767
Q055 - International & Foreign Affairs 990 - Public charity return 501(c)(3)
www.ucs.org

Mission

THE UNION OF CONCERNED SCIENTISTS PUTS RIGOROUS, INDEPENDENT SCIENCE INTO ACTION, DEVELOPING SOLUTIONS AND ADVOCATING FOR A HEALTHY, SAFE, AND JUST FUTURE.

Giving Portfolio

Total Grants
81
Total Giving
$5.4M
Recipients
81
Years Active
2021 - 2024
Avg grant: $56,616 Median: $17,250

Yearly Trends

YearGrantsTotal Giving Avg GrantNewRepeat
202415$410K $27K69
202314$637K $46K68
202220$941K $47K812
202132$3.4M $107K320

Sectors Funded

Environment
49
Education
5
Human Services
3
Public & Societal Benefit
3
Arts, Culture & Humanities
3
Community Improvement
2
Civil Rights & Advocacy
2
Youth Development
1

Top States

District of Columbia
13
California
12
Georgia
6
Minnesota
6
New York
5
Ohio
5
Louisiana
4
Massachusetts
4
and 14 more states

Grantee Size Profile

$1M - $5M
24
$500K - $1M
12
Over $50M
11
$10M - $50M
11
$5M - $10M
10
Under $100K
2
$100K - $500K
2

Top Grantees

Page 1 of 3

Grants Awarded · 73 grants

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Financials

Total Revenue
$55,479,482
Total Expenses
$49,837,453
Net Assets
$71,628,079
254 employees 19 volunteers
From latest filing (tax period ending 2025-09-30)

Financial Health

Operating Reserve
17.2 months Healthy
Net assets / monthly expenses
Year-over-Year Change
Revenue ↑ 32.4%
Expenses ↓ 0.9%
Revenue Sources
Contributions 91.6% Investment 2.2% Other 6.0%
Expense Breakdown
Program 88.3% Management 6.3% Fundraising 5.4%

Officers & Trustees (35)

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Filing History (7 filings)

YearRevenueExpensesNet Assets
2024 990 - Public charity return
Oct 1, 2024 to Sep 30, 2025
$55,479,482 ↑$49,837,453$71,628,079
2023 990 - Public charity return
Oct 1, 2023 to Sep 30, 2024
$41,916,878 ↑$50,279,313$60,813,982
2022 990 - Public charity return
Oct 1, 2022 to Sep 30, 2023
$41,698,808 ↓$49,563,981$61,915,117
2021 990 - Public charity return
Oct 1, 2021 to Sep 30, 2022
$48,698,312 ↓$54,771,427$64,654,937
2020 990 - Public charity return
Oct 1, 2020 to Sep 30, 2021
$64,025,005 ↑$44,644,043$80,411,051
2019 990 - Public charity return
Oct 1, 2019 to Sep 30, 2020
$45,788,985 ↑$41,630,233$54,717,733
2017 990 - Public charity return
Oct 1, 2017 to Sep 30, 2018
$39,868,533 $36,737,536$48,767,407

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EIN: 04-2535767 · Source: IRS Form 990 e-file data