Tax-exempt organization ยท Files a Form 5500
MARINE BIOLOGICAL LABORATORY
7 MBL STREET, WOODS HOLE, MA 02543-1015
EIN
04-2104690
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
1938-04
IRS · 2026-09
NTEE code
U500
IRS · 2026-09
Latest tax period on file
2025-06
IRS · 2026-09
Revenue (latest 990)
$55,357,167
IRS · 2026-09
Assets (latest 990)
$246,532,340
IRS · 2026-09
Benefit plan 505, 2024 filing
MARINE BIOLOGICAL LABORATORY HEALTH AND WELFARE BENEFITS PLAN
DOL · 2025-07-24
Participants (start of year)
257
DOL · 2025-07-24
Plan features
code 4A4B4E4F4H4Q
DOL · 2025-07-24
Plan type
Single-employer plan
DOL · 2025-07-24
Business code (NAICS)
611000
DOL · 2025-07-24
Benefit plan 3, 2024 filing
MARINE BIOLOGICAL LABORATORY DEFINED CONTRIBUTION RETIREMENT PLAN
DOL · 2025-07-22