Antietam Institute Inc

Nonprofit profile at a glance

EIN
272148883
IRS 990-EZ coverage
2021–2025
Forms available
Form 990-EZ 2025, Form 990-N 2020
Location
Sharpsburg, MD, USA
Rating
69
Verdict
SUPPORTED
Rating confidence
Moderate
Sector
Historical Societies, Related Historical Activities

Reported finances

Revenue
$140,451
Expenses
$129,606
Assets
$209,544
Liabilities
$0

Source: IRS Form 990-EZ. Selected filing: tax year 2025. Amounts in USD.

Leadership & pay

14 people listed

Executive titles in this filing

  • JAMES ROSEBROCK (PRESIDENT)
  • JAMES SMITH (VICE PRESIDENT)
  • CHRIS VINCENT (EXECUTIVE DIRECTOR)

People named in this filing

  • JAMES ROSEBROCK (PRESIDENT)
  • JAMES SMITH (VICE PRESIDENT)
  • MIRIAM CUNNINGHAM (TREASURER)

Selected names, not a complete roster or a statement of current roles. Open leadership details for the complete filed list.

Source: IRS Form 990-EZ. Selected filing: tax year 2025. Names and roles reflect this filing, not necessarily current officeholders.

Overview

Mission

Educational & philanthropic organization

What it reported doing in 2025

Grants and awards

Operating model

Revenue model
Mixed. Its operating money came from several sources; no one source provided a clear majority.
Distribution model
Direct operator. The filing allocates 100% of reported program-service expenses outside its grant, affiliate-payment, and member-benefit lines. This expense classification does not rule out separately announced grant awards.

The verdict

SUPPORTED - The filed numbers largely add up and program spending has grown recently. A relatively small share of available resources goes toward mission work and expenses are high relative to revenue.

Rating breakdown

  • Financial Efficiency: 57
  • Transparency & Controls: 82
  • Sustainability: 57
  • Growth: 100

Detailed rating inputs

Financial Efficiency

  • Mission deployment rate: 55.1%; rating input score 55
  • Program expense ratio: 59.7%; rating input score 60

Transparency & Controls

  • Consistency checks: 100%; rating input score 100; 52nd percentile among comparable filings
  • Major donor itemization: Limited

Sustainability

  • Operating margin: 7.7%; rating input score 51; 51st percentile among comparable filings
  • Total-asset coverage ratio: 1.62; rating input score 74; 74th percentile among comparable filings
  • Liabilities to assets ratio: 0; rating input score 74; 74th percentile among comparable filings
  • Officer compensation ratio: 9.8%; rating input score 22; 22nd percentile among comparable filings

Growth

  • Program expense growth: 34.2% per year; rating input score 100; 85th percentile among comparable filings
  • Revenue growth: 23.9% per year; rating input score 100; 86th percentile among comparable filings
  • Asset growth: 40.6% per year; rating input score 100; 90th percentile among comparable filings

Details

  • Where the money goes: 55.1% of revenue deployed · 59.7% of spending went to programs
  • Governance: Filed governance answers
  • Accomplishments: 3 filed program accomplishments · $77K in reported program spending
  • Leadership: top reported pay $0 · 14 people listed
  • Consistency: 8 of 8 current checks pass
  • Schedules: 2 filed schedules
  • Filing history: 5 filing years from 2021 to 2025
  • Contacts: How to reach this organization
  • Money network: 1 filed money-flow record
  • Grant readiness: Federal tax and exclusion status, award history, and grant-maker relationships.
  • People: Everyone the filings name, and which of them the filings identify by more than a name.

Key Signals

Signals prioritize questions for review. They are not findings of misconduct.

  • Review — Financial Efficiency: Mission deployment rate scored 55/100.
  • Review — Sustainability: Operating margin scored 51/100.
  • High — Sustainability: Officer compensation ratio scored 22/100.