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Nonprofit · EIN 43-6027373

MILLSTONE FOUNDATION

Tax-exempt · SAINT LOUIS, MO 63105

Financials

$454K$645K2023$477K$720K2024
Revenue Expenses · by fiscal year end
Financials of MILLSTONE FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
May 31, 2025990-PF$477,037$719,942-$242,905$4,726,525$682$4,725,843
May 31, 2024990-PF$453,620$645,161-$191,541$4,968,934$186$4,968,748
Financial details: 990-PF for the year ended May 31, 2025

Revenue

Dividends
$67,641
Interest
$68,594
Net gain from sales of assets
$336,728
Other income
$4,074

Expenses

Grants and similar amounts paid
$555,008
Compensation of officers, directors and key employees
$73,500
Disbursements for charitable purposes
$622,288
Excise tax on investment income
$11,196

Balance sheet and other

Total assets, start of year
$4,968,934
Total assets, end of year
$4,726,525
Total liabilities, end of year
$682
Net assets, end of year
$4,725,843
Fair market value of assets
$7,740,990
Qualifying distributions
$622,288
Net investment income
$889,544

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 May 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
ROBERT D MILLSTONE
7701 FORSYTH BLVD SUITE 925, ST LOUIS, MO 63105
PRESIDENT & DIRECTOR0$0
COLLEEN MILLSTONE
7701 FORSYTH BLVD SUITE 925, ST LOUIS, MO 63105
DIRECTOR20$0
990-PF for the year ended May 31, 2024: 2 people
NameTitleHours / weekCompensation
COLLEEN MILLSTONE
7701 FORSYTH BLVD SUITE 925, ST LOUIS, MO 63105
DIRECTOR20$72,000
ROBERT D MILLSTONE
7701 FORSYTH BLVD SUITE 925, ST LOUIS, MO 63105
PRESIDENT & DIRECTOR0$0

Address and contacts

Address (IRS master file)
7733 FORSYTH BLVD STE 1525, SAINT LOUIS, MO 63105-1867
Signed the 990-PF
ROBERT D MILLSTONE, PRESIDENT
Phone
(314) 721-1932
Return prepared by
LOPATA FLEGEL & COMPANY LLP

What it must file and when

IRS records say it files Form 990-PF. Private foundations file every year. Its accounting year ends in May, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025May 31, 2026October 15, 2026Not on file
2024May 31, 2025October 15, 2025990-PF on file
2023May 31, 2024October 15, 2024990-PF on file

IRS record

EIN
43-6027373
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
1957
Accounting year ends
May
Files
Form 990-PF
Assets (IRS master file)
$4,726,525
Income (IRS master file)
$2,612,445

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFMay 2025$477,037$719,942$4,726,525XML
990-TMay 2025–––IRS
990-PFMay 2024$453,620$645,161$4,968,934XML
990-TMay 2024–––IRS
990-PFMay 2023–––IRS
990-TMay 2023–––IRS
990-PFMay 2022–––IRS
990-TMay 2022–––IRS
990-PFMay 2021–––IRS
990-TMay 2021–––IRS
990-PFMay 2020–––IRS
990-PFMay 2018–––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 43-6027373).

Questions about MILLSTONE FOUNDATION

What is the EIN of MILLSTONE FOUNDATION?
The employer identification number (EIN) of MILLSTONE FOUNDATION is 43-6027373.
Is MILLSTONE FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1957.
Are donations to MILLSTONE FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does MILLSTONE FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of MILLSTONE FOUNDATION due?
The return for tax year 2025 (the year ending May 31, 2026) is due October 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MILLSTONE FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990-PF for the year ended May 2025.
Who are the officers and directors of MILLSTONE FOUNDATION?
The 990-PF for the year ended May 31, 2025 lists 2 people; 0 received compensation from the organization.
How much revenue does MILLSTONE FOUNDATION have?
On its 990-PF for the year ended May 31, 2025 it reported revenue of $477,037, expenses of $719,942 and total assets of $4,726,525 at year end.

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