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Nonprofit · EIN 04-2776591

THE C STEPHEN AND FRANCES B FOSTER FOUNDATION

Tax-exempt · WESTON, MA 02493

Financials

$90K$102K2023$231K$162K2024$512K$172K2025
Revenue Expenses · by fiscal year end
Financials of THE C STEPHEN AND FRANCES B FOSTER FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-PF$512,062$171,674$340,388$1,926,391$0$1,926,391
December 31, 2024990-PF$230,657$161,676$68,981$1,696,049$0$1,696,049
December 31, 2023990-PF$90,053$101,569-$11,516$1,627,068$0$1,627,068
Financial details: 990-PF for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$175,216
Dividends
$42,250
Net gain from sales of assets
$294,596

Expenses

Grants and similar amounts paid
$146,695
Disbursements for charitable purposes
$146,695
Excise tax on investment income
$4,503

Balance sheet and other

Total assets, start of year
$1,696,049
Total assets, end of year
$1,926,391
Total liabilities, end of year
$0
Net assets, end of year
$1,926,391
Fair market value of assets
$1,997,930
Qualifying distributions
$146,695
Net investment income
$336,846

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.

NameTitleHours / weekCompensation
C STEPHEN FOSTER MD
348 GLEN ROAD, Weston, MA 02493
PRESIDENT5$0
FRANCES B FOSTER RN
348 GLEN ROAD, Weston, MA 02493
TREASURER AND CLERK5$0
990-PF for the year ended December 31, 2024: 2 people
NameTitleHours / weekCompensation
C STEPHEN FOSTER MD
348 GLEN ROAD, WESTON, MA 02493
PRESIDENT5$0
FRANCES B FOSTER RN
348 GLEN ROAD, WESTON, MA 02493
TREASURER AND CLERK5$0
990-PF for the year ended December 31, 2023: 2 people
NameTitleHours / weekCompensation
C STEPHEN FOSTER MD
348 GLEN ROAD, WESTON, MA 02493
PRESIDENT5$0
FRANCES B FOSTER RN
348 GLEN ROAD, WESTON, MA 02493
TREASURER AND CLERK5$0

Address and contacts

Address (IRS master file)
348 GLEN RD, WESTON, MA 02493-1403
Signed the 990-PF
C STEPHEN FOSTER, PRESIDENT
Phone
(781) 235-7652
Return prepared by
MAHONY & REEVE LLC

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 yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-PF on file
2024December 31, 2024May 15, 2025990-PF on file
2023December 31, 2023May 15, 2024990-PF on file

IRS record

EIN
04-2776591
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
1983
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$1,926,391
Income (IRS master file)
$2,521,592

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2025$512,062$171,674$1,926,391XML
990-PFDecember 2024$230,657$161,676$1,696,049IRS
990-PFDecember 2023$90,053$101,569$1,627,068XML
990-PFDecember 2022–––IRS
990-PFDecember 2021–––IRS
990-PFDecember 2020–––IRS
990-PFDecember 2018–––IRS
990-PFDecember 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 04-2776591).

Questions about THE C STEPHEN AND FRANCES B FOSTER FOUNDATION

What is the EIN of THE C STEPHEN AND FRANCES B FOSTER FOUNDATION?
The employer identification number (EIN) of THE C STEPHEN AND FRANCES B FOSTER FOUNDATION is 04-2776591.
Is THE C STEPHEN AND FRANCES B FOSTER FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1983.
Are donations to THE C STEPHEN AND FRANCES B FOSTER FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does THE C STEPHEN AND FRANCES B FOSTER FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of THE C STEPHEN AND FRANCES B FOSTER 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 THE C STEPHEN AND FRANCES B FOSTER 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 THE C STEPHEN AND FRANCES B FOSTER FOUNDATION?
The 990-PF for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
How much revenue does THE C STEPHEN AND FRANCES B FOSTER FOUNDATION have?
On its 990-PF for the year ended December 31, 2025 it reported revenue of $512,062, expenses of $171,674 and total assets of $1,926,391 at year end.

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