Tax-exempt organization ยท Files a Form 5500
UNION OF CONCERNED SCIENTISTS INC
2 BRATTLE SQ, CAMBRIDGE, MA 02138-3742
EIN
04-2535767
Tax-exempt status
501(c)(3) charitable, religious, educational
IRS · 2026-09
Deductibility
Contributions are deductible
IRS · 2026-09
Foundation classification
Publicly supported charity (170(b)(1)(A)(vi))
IRS · 2026-09
IRS ruling date
1974-06
IRS · 2026-09
NTEE code
Q055
IRS · 2026-09
Latest tax period on file
2025-09
IRS · 2026-09
Revenue (latest 990)
$55,479,482
IRS · 2026-09
Assets (latest 990)
$80,759,386
IRS · 2026-09
Benefit plan 1, 2024 filing
UNION OF CONCERNED SCIENTISTS, INC. 403B PLAN
DOL · 2025-10-15
Participants (start of year)
464
DOL · 2025-10-15
Plan features
code 2F2G2L2M
DOL · 2025-10-15
Plan type
Single-employer plan
DOL · 2025-10-15
Business code (NAICS)
541700
DOL · 2025-10-15
Benefit plan 501, 2024 filing
UNION OF CONCERNED SCIENTISTS WRAP BENEFIT PLAN
DOL · 2025-10-02