EntityWire

EntityWire / EIN 14-1413770

Tax-exempt organization

MILLBROOK SCHOOL

EIN 14-1413770. What DOL Form 5500 filings (EFAST2) and IRS Exempt Organizations Business Master File say about this entity, with the source and date on every fact. Latest record 2026-09.

Tax-exempt organization ยท Files a Form 5500

MILLBROOK SCHOOL

131 MILLBROOK SCHOOL RD, MILLBROOK, NY 12545-4932

EIN

14-1413770

Tax-exempt status

501(c)(3) charitable, religious, educational

IRS · 2026-09

Deductibility

Contributions are deductible

IRS · 2026-09

Foundation classification

School

IRS · 2026-09

IRS ruling date

1933-11

IRS · 2026-09

NTEE code

B250

IRS · 2026-09

Latest tax period on file

2025-06

IRS · 2026-09

Revenue (latest 990)

$45,431,665

IRS · 2026-09

Assets (latest 990)

$184,084,211

IRS · 2026-09

Benefit plan 506, 2024 filing

MILLBROOK SCHOOL HEALTH AND WELFARE PLAN

DOL · 2025-11-11

Participants (start of year)

125

DOL · 2025-11-11

Plan features

code 4A4B4D4E4H4L4Q

DOL · 2025-11-11

Plan type

Single-employer plan

DOL · 2025-11-11

Business code (NAICS)

611000

DOL · 2025-11-11

Benefit plan 1, 2024 filing

MILLBROOK SCHOOL DEFINED CONTRIBUTION RETIREMENT 403(B) PLAN

DOL · 2025-05-27

From DOL Form 5500 filings (EFAST2) · IRS Exempt Organizations Business Master File. Latest record 2026-09.

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What it is not

Registry status, formation date, and registered agent come from the New York Department of State, Division of Corporations; search the New York registry.

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