Mission
THE UNION OF CONCERNED SCIENTISTS PUTS RIGOROUS, INDEPENDENT SCIENCE INTO ACTION, DEVELOPING SOLUTIONS AND ADVOCATING FOR A HEALTHY, SAFE, AND JUST FUTURE.
Public Charity
THE UNION OF CONCERNED SCIENTISTS INC
THE UNION OF CONCERNED SCIENTISTS INC is a nonprofit organization categorized as Public Charity based in CAMBRIDGE, MA. Its most recent IRS filing (2025) reports revenue of $55.5M, expenses of $49.8M, total assets of $80.8M. Imperigo tracks 448 reported grant relationships connected to this organization totaling approximately $89.8M.
EIN: 042535767
CAMBRIDGE, MA
Research Institutes & Public Policy Analysis
NTEE: Q05
Latest filing: 2025
Total Revenue$55.5M
Total Expenses$49.8M
Total Assets$80.8M
Grant Records448
Funding Total$89.8M
Filing Years2021–2025
Where $100 goes at The Union of Concerned Scientists Inc
How The Union of Concerned Scientists Inc divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.
$87
Programs
the work itself
$6
Management
running the organization
$7
Fundraising
raising the next dollar
Inside the $87 for programs
$37
The climate and clean energy program works to limit the magnitude and impacts of climate change, to help communities build resilience in the face of unavoidable climate impacts…
$13
The clean transportation program seeks to advance an ambitious and fair clean transportation agenda
$12
Global security program seeks to build a more secure and equitable future by reducing the risk of a nuclear war starting by accident or miscalculation, and ultimately eliminating…
Plus 4 more programs. Cost per person served and the full program breakdown are on the full profile.
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
ENVIRONMENT & ANIMAL PROTECTION
$102,050
general support
$50,000
GENERAL SUPPORT
$32,161
GENERAL SUPPORT
$16,500
$15,800
Showing up to 5 of 448 total records — full history available with membership.
Officers & Directors
DEPUTY DIRECTOR, CLIMATE
Adam Markham
BOARD MEMBER
Adele Simmons
BOARD MEMBER
Andrew J Gunther
BOARD CHAIR
Anne R Kapuscinski
BOARD MEMBER
Ben Santer
BOARD MEMBER
Camara Phyllis Jones
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $55.5M | $49.8M | $80.8M |
| 2024 | $41.9M | $50.3M | $71.5M |
| 2023 | $41.7M | $49.6M | $75.5M |
| 2022 | $48.7M | $54.8M | $71.6M |
| 2021 | $64.0M | $44.6M | $92.8M |
Between 2021 and 2025, reported annual revenue declined from $64.0M to $55.5M (-13%), with total assets most recently reported at $80.8M.
Interactive year-over-year charts and full filing details available with membership.