One Big Sustainable Island

Nonprofit profile at a glance

EIN
453599222
IRS 990-EZ coverage
2021–2025
Forms available
Form 990-EZ 2025, Form 990-N 2020
Location
Monmouth, ME, USA
Phone
2075122524
Rating
84
Verdict
STRONG
Rating confidence
Moderate
Sector
Environmental Education and Outdoor Survival Programs

Official website

Reported finances

Revenue
$149,655
Expenses
$121,757
Assets
$150,804
Liabilities
$70,968

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

Leadership & pay

7 people listed

Executive titles in this filing

  • Kent Ackley (Executive Director)
  • Margaret Brick JD (President)

People named in this filing

  • Kent Ackley (Executive Director)
  • Bonnie Green (Treasurer)
  • Joseph McPhee AIA (Director)

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

One Big Sustainable Island promotes environmental sustainability and community resilience through educational initiatives, public engagement, and demonstration projects. The organization develops and shares resources, tools, and community programs that encourage responsible stewardship of natural resources, sustainable living practices, and innovative local solutions that reduce environmental impact and support long-term ecological health.

What it reported doing in 2025

Local Community Service and Support: Placement of navigational aids, rescue of stranded boaters, invasive plant survey assistance, logistical support for water quality sampling, loon restoration program assistance, maintenance of public access to snowmobile trails, hiking trails, swimming at public beach, and restroom facilities - 500 local residents assisted.

Operating model

Revenue model
Earned-program. 94% of the money available for current operations came from fees and other program revenue.
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

STRONG - A large share of available resources goes toward mission work and the filed numbers largely add up. Liabilities are high compared with assets and reported officer compensation is a large share of total spending, which may reflect staffing concentration.

Rating breakdown

  • Financial Efficiency: 88
  • Transparency & Controls: 82
  • Sustainability: 54
  • Growth: 100

Detailed rating inputs

Financial Efficiency

  • Mission deployment rate: 81.4%; rating input score 81
  • Program expense ratio: 100%; rating input score 100

Transparency & Controls

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

Sustainability

  • Operating margin: 18.6%; rating input score 69; 69th percentile among comparable filings
  • Total-asset coverage ratio: 1.24; rating input score 65; 65th percentile among comparable filings
  • Liabilities to assets ratio: 0.47; rating input score 9; 9th percentile among comparable filings
  • Officer compensation ratio: 35.3%; rating input score 10; 10th percentile among comparable filings

Growth

  • Program expense growth: 20.8% per year; rating input score 100; 75th percentile among comparable filings
  • Revenue growth: 18.5% per year; rating input score 100; 80th percentile among comparable filings
  • Asset growth: 36.5% per year; rating input score 100; 89th percentile among comparable filings

Details

  • Where the money goes: 81.4% of revenue deployed · 100% of spending went to programs
  • Governance: Filed governance answers
  • Accomplishments: 3 filed program accomplishments · $122K in reported program spending
  • Leadership: top reported pay $0 · 7 people listed
  • Consistency: 7 of 7 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.

  • High — Sustainability: Liabilities to assets ratio scored 9/100.
  • High — Sustainability: Officer compensation ratio scored 10/100.