Open Earth Foundation
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Builds and shares free online tools to help the planet flourish. For fiscal year 2025 it reported $990K in revenue, $1.8M in expenses, and $2.6M in net assets.Pt I
Summary of the Filing
Where the work happens
Citycatalyst is our flagship open-source platform for city-level climate action, with tools to develop GHG inventories, climate change risk assessments and action planning. This year, it was deployed across over 5,000 cities in latin america, improving data accuracy and accessibility, reducing costs and helping municipalities to identify…
Openearth Lab
As a research and deployment climate tech nonprofit,the openearth lab is where innovation across all projects occurs. The lab supports collaboration among existing projects and is where new innovative ideas emerge that will help openearth foundation move the needle in our mission and develop new programs.
Openclimate is an open source and digitally integratedclimate accounting system designed to help the world achieve theemission reduction targets set by the paris agreement. Its purpose isto remove friction between different standards, reducing doublecounting and catalysing coordination towards climate goals.
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Identity & Classification
Governance & Policies
Officers, Directors & Key Employees
Martin Wainstein’s $158K as Board Chair/Executive Director is at the 87th percentile of top reported officer pay among 310 $100K–1M science & technology nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.
Compensation history total reportable pay by year · 6 named individuals · Part VII
| Name | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 |
|---|---|---|---|---|---|
| Martin Wainstein | $158,005 | $145,473 | $149,387 | $158,624 | $150,010 |
| Christian Wiesenthal | — | — | — | — | $128,750 |
| Sean Young | $120,328 | $115,843 | $104,106 | — | — |
| Katherine Foster | — | — | — | — | $107,268 |
| Lucas Gloege | — | — | $104,408 | — | — |
| Melissa Hauser | $94,944 | $91,354 | $76,401 | $88,529 | — |
Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.
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Statement of Revenue
Statement of Functional Expenses
Balance Sheet
Financial Metrics
Same NTEE category, revenue band, and state where available. Descriptive — not a grade.
| Metric | This org | Peer median | Percentile |
|---|---|---|---|
| Program ratio | 86% | — | — |
| Overhead ratio | 10% | — | — |
| Fundraising cost ratio | 10% | — | — |
| Revenue growth | -19% | — | — |
Straight from the Form 990 — descriptive, not an evaluation. A ratio is hidden when its base is zero or too small to be meaningful; the dollars are always shown.
Grants
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Filings & Schedule Manifest
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Sources
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