Tax-exempt organization ยท Files a Form 5500
MORTON ARBORETUM
4100 ILLINOIS ROUTE 53, LISLE, IL 60532-1288
EIN
36-1505770
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
1925-06
IRS · 2026-09
NTEE code
C410
IRS · 2026-09
Latest tax period on file
2024-12
IRS · 2026-09
Revenue (latest 990)
$57,793,716
IRS · 2026-09
Assets (latest 990)
$367,601,821
IRS · 2026-09
Benefit plan 3, 2024 filing
THE MORTON ARBORETUM 401(K) RETIREMENT PLAN
DOL · 2025-09-08
Participants (start of year)
478
DOL · 2025-09-08
Plan features
code 2E2F2G2J2K2S2T3D
DOL · 2025-09-08
Plan type
Single-employer plan
DOL · 2025-09-08
Business code (NAICS)
813000
DOL · 2025-09-08
Benefit plan 502, 2024 filing
THE MORTON ARBORETUM HEALTH AND WELFARE BENEFIT PLAN
DOL · 2025-05-15