Nonprofit · EIN 94-2511254
GREEK ONTOLOGICAL DEVELOPMENT SOCIETY
Also known as GeoOntological Development Society
Tax-exempt · SAN FRANCISCO, CA 94121
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $16,792 | $50,000 | -$33,208 | $581,830 | $0 | $581,830 |
| December 31, 2024 | 990 | $16,646 | $50,000 | -$33,354 | $553,346 | $0 | $553,346 |
| December 31, 2023 | 990 | $16,485 | $50,712 | -$34,227 | $530,055 | $0 | $530,055 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $5,600
- Program service revenue
- $0
- Investment income
- $11,192
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $50,000
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Program services (functional)
- $50,000
Balance sheet and other
- Total assets, start of year
- $553,346
- Total assets, end of year
- $581,830
- Total liabilities, end of year
- $0
- Net assets, end of year
- $581,830
- Publicly traded securities
- $559,681
- Gross receipts
- $16,792
- Employees
- 0
- Volunteers
- 2
- Year formed
- 1976
- 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 |
|---|---|---|---|
| Damien Marken | President Officer | 10 | $0 |
| John Domingos | Secretary Officer | 1 | $0 |
990 for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Damien Marken | President Officer | 15 | $0 |
| John Domingos | Secretary Officer | 1 | $0 |
990 for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Leon Langan | Chairperson of the Board Officer | 5 | $0 |
| Damien Marken | President Officer | 10 | $0 |
| John Domingos | Secretary Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 311 29TH AVE, SAN FRANCISCO, CA 94121-1702
- In care of
- % DAMIEN MARKEN
- Mailing address (990-N for 2009)
- 311 29th Ave, San Francisco CA 94121
- Principal officer (990 for 2025)
- Damien Marken, 1201 Main St, Bloomsburg, PA 17815
- Principal officer (990-N for 2009)
- Damien Marken, 311 29th Ave, San Francisco CA 94121
- Signed the 990
- Damien Marken, President
- Phone
- (415) 680-5861
California records
California keeps its own records of charities and corporations. Search them by EIN 94-2511254 or by the name GREEK ONTOLOGICAL DEVELOPMENT SOCIETY.
- 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
To advance scientific and public knowledge of the past principally through grants for archaeological research and sponsoring public/professional presentations of current archaeological research and discoveries.
Program accomplishments
- Waka' Archaeological Project (PAW) Archaeological field research and lab analysis of artifacts from the Classic Maya site of El Peru-Waka', Peten, Guatemala. Research supported archaeological excavation for 1 USA professional archaeologist, 2 Guatemalan professional archaeologists, 3 Guatemalan student researchers, and 1 USA student researcher in the field, and 6 USA student researchers and 3 Guatemalan professional researchers in the lab. Research also enabled PAW's Guatemalan members to continue to advance in artifact analysis in 2025 and for PAW to maintain its lab and storage space in Guatemala City.Expenses $50,000 · grants $50,000
- There was no 2nd service accomplishment in 2024, but this online system will not let me delete this section which was saved over from 2023.0
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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
- 94-2511254
- 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
- 1979
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Assets (IRS master file)
- $581,830
- Income (IRS master file)
- $16,792
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $16,792 | $50,000 | $581,830 | XML |
| 990 | December 2024 | $16,646 | $50,000 | $553,346 | XML |
| 990 | December 2023 | $16,485 | $50,712 | $530,055 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990-N for 2009 Officer: Damien Marken | April 30, 2010 | ≤ $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 94-2511254).
Questions about GREEK ONTOLOGICAL DEVELOPMENT SOCIETY
- What is the EIN of GREEK ONTOLOGICAL DEVELOPMENT SOCIETY?
- The employer identification number (EIN) of GREEK ONTOLOGICAL DEVELOPMENT SOCIETY is 94-2511254.
- Is GREEK ONTOLOGICAL DEVELOPMENT SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1979.
- Are donations to GREEK ONTOLOGICAL DEVELOPMENT SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does GREEK ONTOLOGICAL DEVELOPMENT SOCIETY file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of GREEK ONTOLOGICAL DEVELOPMENT SOCIETY 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 GREEK ONTOLOGICAL DEVELOPMENT SOCIETY 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 GREEK ONTOLOGICAL DEVELOPMENT SOCIETY?
- The 990 for the year ended December 31, 2025 names Damien Marken.
- Who are the officers and directors of GREEK ONTOLOGICAL DEVELOPMENT SOCIETY?
- The 990 for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does GREEK ONTOLOGICAL DEVELOPMENT SOCIETY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $16,792, expenses of $50,000 and total assets of $581,830 at year end.
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