Nonprofit · EIN 26-1442469
STEVEN PREWITT SKULL BASE DISEASE FOUNDATION
Tax-exempt · SAN DIEGO, CA 92108
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $39,246 | $80,102 | -$40,856 | $779,549 | $0 | $779,549 |
| December 31, 2024 | 990-PF | $33,451 | $70,052 | -$36,601 | $640,284 | $21,217 | $619,067 |
| December 31, 2023 | 990-PF | $28,293 | $40,271 | -$11,978 | $657,917 | $21,217 | $636,700 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $2,500
- Interest
- $36,746
Expenses
- Grants and similar amounts paid
- $50,800
- Compensation of officers, directors and key employees
- $24,000
- Disbursements for charitable purposes
- $78,145
- Excise tax on investment income
- $485
Balance sheet and other
- Total assets, start of year
- $640,284
- Total assets, end of year
- $779,549
- Total liabilities, end of year
- $0
- Net assets, end of year
- $779,549
- Fair market value of assets
- $779,549
- Qualifying distributions
- $78,145
- Net investment income
- $36,746
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-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| PERRY MANSFIELD 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | CHAIR | 4 | $24,000 |
| MICHAEL O'LEARY 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| JAMES KIDERICK 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| BOBBI BENNETT 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | TREASURER | 1 | $0 |
990-PF for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| PERRY MANSFIELD 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | CHAIR | 4 | $0 |
| MICHAEL OLEARY 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| JIM KIDERICK 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| BOBBI BENNETT 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER TREASURER | 1 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| PERRY MANSFIELD 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | CHAIR | 4 | $0 |
| MICHAEL OLEARY 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| JIM KIDERICK 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER | 1 | $0 |
| BOBBI BENNETT 3590 CAMINO DEL RIO N UNIT 100, SAN DIEGO, CA 92108 | BOARD MEMBER TREASURER | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 3590 CAMINO DEL RIO N STE 100, SAN DIEGO, CA 92108-1707
- In care of
- % PERRY MANSFIELD MD
- Signed the 990-PF
- DR PERRY MANSFIELD, PRESIDENT
- Phone
- (619) 717-8096
- Website
- WWW.SKULLBASEDISEASE.ORG
- Return prepared by
- EISNER ADVISORY GROUP LLC
California records
California keeps its own records of charities and corporations. Search them by EIN 26-1442469 or by the name STEVEN PREWITT SKULL BASE DISEASE 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)
What it must file and when
IRS records say it files Form 990-PF. Private foundations file every year. 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-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 26-1442469
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2010
- Accounting year ends
- December
- Files
- Form 990-PF
- Category (NTEE)
- Medical research (H50)
- Assets (IRS master file)
- $779,549
- Income (IRS master file)
- $39,246
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $39,246 | $80,102 | $779,549 | IRS |
| 990-PF | December 2024 | $33,451 | $70,052 | $640,284 | IRS |
| 990-PF | December 2023 | $28,293 | $40,271 | $657,917 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 2018 | – | – | – | IRS |
| 990-PF | December 2017 | – | – | – | IRS |
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 26-1442469).
Questions about STEVEN PREWITT SKULL BASE DISEASE FOUNDATION
- What is the EIN of STEVEN PREWITT SKULL BASE DISEASE FOUNDATION?
- The employer identification number (EIN) of STEVEN PREWITT SKULL BASE DISEASE FOUNDATION is 26-1442469.
- Is STEVEN PREWITT SKULL BASE DISEASE FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2010.
- Are donations to STEVEN PREWITT SKULL BASE DISEASE FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does STEVEN PREWITT SKULL BASE DISEASE FOUNDATION file?
- Form 990-PF. Private foundations file every year.
- When is the next return of STEVEN PREWITT SKULL BASE DISEASE 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 STEVEN PREWITT SKULL BASE DISEASE FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of STEVEN PREWITT SKULL BASE DISEASE FOUNDATION?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 1 received compensation from the organization, the highest $24,000 (PERRY MANSFIELD, CHAIR).
- How much revenue does STEVEN PREWITT SKULL BASE DISEASE FOUNDATION have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $39,246, expenses of $80,102 and total assets of $779,549 at year end.
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