Nonprofit · EIN 85-3261449
OPEN EARTH FOUNDATION
Tax-exempt · PLAYA DEL REY, CA 90293
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $989,875 | $1,844,310 | -$854,435 | $2,634,213 | $74,521 | $2,559,692 |
| December 31, 2024 | 990 | $1,221,138 | $1,493,967 | -$272,829 | $3,397,521 | $34,163 | $3,363,358 |
| December 31, 2023 | 990 | $1,076,620 | $1,459,827 | -$383,207 | $3,282,146 | $19,619 | $3,262,527 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $726,905
- Program service revenue
- $211,000
- Investment income
- $51,970
- Net gain from sales of assets
- -$53,791
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $399,631
- Salaries, compensation and benefits (total)
- $430,521
- Professional fundraising fees
- $0
- Accounting fees
- $8,948
- Travel
- $32,817
- Depreciation
- $2,348
- Program services (functional)
- $1,590,663
- Management and general (functional)
- $177,884
- Fundraising (functional)
- $75,763
Balance sheet and other
- Total assets, start of year
- $3,397,521
- Total assets, end of year
- $2,634,213
- Total liabilities, end of year
- $74,521
- Net assets, end of year
- $2,559,692
- Land, buildings and equipment
- $2,125
- Publicly traded securities
- $2,117,160
- Net assets without donor restrictions
- $2,559,692
- Gross receipts
- $1,334,441
- Employees
- 3
- Volunteers
- 4
- Year formed
- 2020
- State of legal domicile
- CA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARTIN WAINSTEIN | BOARD CHAIR/EXECUTIVE DIRECTOR Trustee or director, Officer | 40 | $158,005 | $7,086 |
| SEAN YOUNG | DIRECTOR OF OPERATIONS Officer | 40 | $120,328 | $11,903 |
| MELISSA HAUSER | DIRECTOR OF PEOPLE & CULTURE Officer | 40 | $94,944 | $7,365 |
| ANGEL HSU | BOARD MEMBER Trustee or director | 0.25 | $0 | $0 |
| BILL MELTON | BOARD MEMBER Trustee or director | 0.25 | $0 | $0 |
| JEHAN CHU | BOARD MEMBER Trustee or director | 0.25 | $0 | $0 |
| JOAQUIN VAN PEBORGH | TREASURER Officer | 1 | $0 | $0 |
990 for the year ended December 31, 2024: 7 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARTIN WAINSTEIN | BOARD CHAIR/EXECUTIVE DIRE Trustee or director, Officer | 40 | $145,473 | $5,818 |
| SEAN YOUNG | DIRECTOR OF OPERATIONS Officer | 40 | $115,843 | $10,009 |
| MELISSA HAUSER | SECRETARY/DIRECTOR OF PEOPLE & CULTURE Officer | 40 | $91,354 | $6,455 |
| ANGEL HSU | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| BILL MELTON | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JEHAN CHU | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOAQUIN VAN PEBORGH | VICE CHAIR Officer | 1 | $0 | $0 |
990 for the year ended December 31, 2023: 9 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARTIN WAINSTEIN | BOARD CHAIR/EXECUTIVE DIRE Trustee or director, Officer | 40 | $149,387 | $6,135 |
| SEAN YOUNG | DIRECTOR OF OPERATIONS Officer | 40 | $104,106 | $8,937 |
| LUCAS GLOEGE | CLIMATE DATA ENGINEER Highest-paid employee | 40 | $104,408 | $5,326 |
| MELISSA HAUSER | SECRETARY Officer | 40 | $76,401 | $5,990 |
| ANGEL HSU | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| BILL MELTON | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JEHAN CHU | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| YIHANA VON RITTER | TREASURER (UNTIL 12/31/2023) Officer | 0.5 | $0 | $0 |
| JOAQUIN VAN PEBORGH | VICE CHAIR Officer | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 322 CULVER BLVD PMB 1038, PLAYA DEL REY, CA 90293-7704
- In care of
- % MARTIN WAINSTEIN
- Mailing address (990-N for 2020)
- 24 Lighthouse Street APT A, Marina Del Rey CA 90292
- Principal officer (990 for 2025)
- MARTIN WAINSTEIN, 322 CULVER BLVD 1038, PLAYA DEL REY, CA 90293
- Principal officer (990-N for 2020)
- Martin Wainstein, 24 Lighthouse Street APT A, Marina Del Rey CA 90292
- Signed the 990
- MARTIN WAINSTEIN, EXECUTIVE DIRECTOR
- Phone
- (347) 398-5284
- Website
- OPENEARTH.ORG
- Return prepared by
- EVERGREEN ALLIANCE
California records
California keeps its own records of charities and corporations. Search them by EIN 85-3261449 or by the name OPEN EARTH FOUNDATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
THE OPEN EARTH FOUNDATION IS DEDICATED TO CREATING AND DEPLOYING OPEN SOURCE DIGITAL SYSTEMS AND SOLUTIONS TO MITIGATE CLIMATE CHALLENGES AND SUPPORT A THRIVING PLANET.
Program accomplishments
- 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 PRIORITY REDUCTION ACTIONS. IT ALSO LAUNCHED INITIATIVES TO LEVERAGE AI FOR ANALYZING THE CITY CLIMATE ACTION PLAN ACROSS 112 CITIES IN EUROPE.Expenses $1,433,394 · revenue $211,000
- 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. THIS YEAR IT FOCUSED ON NEW RESEARCH AREAS ON AI ARCHITECTURE FOR PLANETARY RESILIENCE.Expenses $153,571
- 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. WEMAINTAIN A PUBLIC DASHBOARD HELPING TRACK PROGRESS ON EMISSION GOALS.Expenses $3,698
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 85-3261449
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2020
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U30)
- Assets (IRS master file)
- $2,634,213
- Income (IRS master file)
- $1,334,441
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $989,875 | $1,844,310 | $2,634,213 | IRS |
| 990 | December 2024 | – | – | – | IRS |
| 990 | December 2023 | $1,076,620 | $1,459,827 | $3,282,146 | IRS |
| 990 | December 2022 | -$246,091 | $1,977,920 | $3,615,693 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990-N for 2020 Officer: Martin Wainstein | December 31, 2020 | ≤ $50,000 receipts | – | – | e-Postcard |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 85-3261449).
Questions about OPEN EARTH FOUNDATION
- What is the EIN of OPEN EARTH FOUNDATION?
- The employer identification number (EIN) of OPEN EARTH FOUNDATION is 85-3261449.
- Is OPEN EARTH FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2020.
- Are donations to OPEN EARTH FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does OPEN EARTH FOUNDATION file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of OPEN EARTH FOUNDATION due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did OPEN EARTH FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of OPEN EARTH FOUNDATION?
- The 990 for the year ended December 31, 2025 names MARTIN WAINSTEIN.
- Who are the officers and directors of OPEN EARTH FOUNDATION?
- The 990 for the year ended December 31, 2025 lists 7 people; 3 received compensation from the organization, the highest $158,005 (MARTIN WAINSTEIN, BOARD CHAIR/EXECUTIVE DIRECTOR).
- How much revenue does OPEN EARTH FOUNDATION have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $989,875, expenses of $1,844,310 and total assets of $2,634,213 at year end.
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All nonprofits in PLAYA DEL REY · California · Science and technology