Nonprofit · EIN 37-2136270
RC28 FOUNDATION
Tax-exempt · BOULDER, CO 80302
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $41,582 | $16,022 | $25,560 | $185,013 | – | $185,013 |
| December 31, 2024 | 990-EZ | $161,732 | $7,497 | $154,235 | $152,401 | – | $152,401 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Program service revenue
- $32,353
- Investment income
- $4,094
- Net gain from sales of assets
- $5,135
Expenses
- Grants and similar amounts paid
- $12,411
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $2,799
- Other expenses
- $812
- Program services (functional)
- $14,573
Balance sheet and other
- Total assets, start of year
- $152,401
- Total assets, end of year
- $185,013
- Total liabilities, end of year
- –
- Net assets, end of year
- $185,013
- Cash, savings and investments
- $185,013
- Gross receipts
- $41,582
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| HIROSHI ISHIDA | PRESIDENT | 5 | $0 |
| JENNIE BRAND | VICE PRESIDE | 5 | $0 |
| YULIYA KOSYAKOVA | SEC/TREASURE | 5 | $0 |
| RICHARD ARUM | BOARD MEMBER | 5 | $0 |
990-EZ for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| HIROSHI ISHIDA | PRESIDENT | 5 | $0 |
| JENNIE BRAND | VICE PRESIDE | 5 | $0 |
| YULIYA KOSYAKOVA | SEC/TREASURE | 5 | $0 |
| RICHARD ARUM | BOARD MEMBER | 5 | $0 |
Address and contacts
- Address (IRS master file)
- 1942 BROADWAY STE 314C, BOULDER, CO 80302-5233
- Signed the 990-EZ
- HIROSHI ISHIDA, PRESIDENT
- Phone
- (415) 928-4161
- Website
- RC28FOUNDATION.ORG
- Return prepared by
- MARJTAX INCORPORATED
Mission
TO PROMOTE QUALITY SCIENTIFIC RESEARCH ON SOCIAL STRATIFICATION & MOBILITY
Program accomplishments
- HOSTED TWO CONFERENCES IN 2025 IN COLLABORATION WITH RC28 LOCAL HOSTS; THESE EVENTS ARE PIVOTAL FOR SHARING NEW RESEARCH AND ENHANCING INTERNATIONAL COOPERATION.Expenses $2,162
- PRESENTED 11 TRAVEL GRANTS (5 AT THE SPRING MEETING AND 6 AT THE SUMMER MEETING) & 1 ANNUAL SIGNIFICANT SCHOLARSHIP AWARD AT THE SUMMER MEETING.Expenses $12,411 · grants $12,411
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-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | Check at the IRS |
IRS record
- EIN
- 37-2136270
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2024
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Social science (V20)
- Assets (IRS master file)
- $185,013
- Income (IRS master file)
- $41,582
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $41,582 | $16,022 | $185,013 | XML |
| 990-EZ | December 2024 | $161,732 | $7,497 | $152,401 | XML |
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 37-2136270).
Questions about RC28 FOUNDATION
- What is the EIN of RC28 FOUNDATION?
- The employer identification number (EIN) of RC28 FOUNDATION is 37-2136270.
- Is RC28 FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
- Are donations to RC28 FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does RC28 FOUNDATION file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of RC28 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 RC28 FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who are the officers and directors of RC28 FOUNDATION?
- The 990-EZ for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does RC28 FOUNDATION have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $41,582, expenses of $16,022 and total assets of $185,013 at year end.
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