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Nonprofit · EIN 26-1828406

MARK AND MAUREEN MILLER FAMILY FOUNDATION

Tax-exempt · DENVER, CO 80209

Financials

$686K$1.7M2023$1.3M$2.4M2024$1.2M$2.1M2025
Revenue Expenses · by fiscal year end
Financials of MARK AND MAUREEN MILLER FAMILY FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-PF$1,175,397$2,060,596-$885,199$10,135,337$0$10,135,337
December 31, 2024990-PF$1,281,178$2,430,943-$1,149,765$11,044,613$0$11,044,613
December 31, 2023990-PF$686,493$1,684,925-$998,432$12,222,669$0$12,222,669
Financial details: 990-PF for the year ended December 31, 2025

Revenue

Dividends
$167,530
Interest
$179,964
Net gain from sales of assets
$827,903

Expenses

Grants and similar amounts paid
$1,938,000
Disbursements for charitable purposes
$1,947,414
Excise tax on investment income
$3,342

Balance sheet and other

Total assets, start of year
$11,044,613
Total assets, end of year
$10,135,337
Total liabilities, end of year
$0
Net assets, end of year
$10,135,337
Fair market value of assets
$13,605,431
Qualifying distributions
$1,947,414
Net investment income
$348,025

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
MARK C MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
PRESIDENT /T2$0
MAUREEN E MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
VICE PRES/SE1$0
JONATHAN D MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0.5$0
SEAN M MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0.5$0
990-PF for the year ended December 31, 2024: 4 people
NameTitleHours / weekCompensation
MARK C MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
PRESIDENT /T0$0
MAUREEN E MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
VICE PRES/SE0$0
JONATHAN D MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0$0
SEAN M MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0$0
990-PF for the year ended December 31, 2023: 4 people
NameTitleHours / weekCompensation
MARK C MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
PRESIDENT /T2$0
MAUREEN E MILLER
2301 E ALAMEDA AVENUE, DENVER, CO 80209
VICE PRES/SE1$0
JONATHAN D MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0.5$0
SEAN M MILLER
2301 ALAMEDA AVENUE, DENVER, CO 80209
DIRECTOR0.5$0

Address and contacts

Address (IRS master file)
2301 E ALAMEDA AVE, DENVER, CO 80209-3337
In care of
% MARK C MILLER
Signed the 990-PF
MARK C MILLER, PRESIDENT /TREASURER
Phone
(847) 815-6332
Return prepared by
TOGNOCCHI & ASSOCIATES 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
26-1828406
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
2008
Accounting year ends
December
Files
Form 990-PF
Assets (IRS master file)
$10,135,337
Income (IRS master file)
$4,369,778

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-PFDecember 2025$1,175,397$2,060,596$10,135,337XML
990-PFDecember 2024$1,281,178$2,430,943$11,044,613IRS
990-PFDecember 2023$686,493$1,684,925$12,222,669XML
990-PFDecember 2022–––IRS
990-PFDecember 2021–––IRS
990-PFDecember 2020–––IRS
990-PFDecember 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 26-1828406).

Questions about MARK AND MAUREEN MILLER FAMILY FOUNDATION

What is the EIN of MARK AND MAUREEN MILLER FAMILY FOUNDATION?
The employer identification number (EIN) of MARK AND MAUREEN MILLER FAMILY FOUNDATION is 26-1828406.
Is MARK AND MAUREEN MILLER FAMILY FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2008.
Are donations to MARK AND MAUREEN MILLER FAMILY FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
Which annual return does MARK AND MAUREEN MILLER FAMILY FOUNDATION file?
Form 990-PF. Private foundations file every year.
When is the next return of MARK AND MAUREEN MILLER FAMILY 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 MARK AND MAUREEN MILLER FAMILY 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 MARK AND MAUREEN MILLER FAMILY FOUNDATION?
The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
How much revenue does MARK AND MAUREEN MILLER FAMILY FOUNDATION have?
On its 990-PF for the year ended December 31, 2025 it reported revenue of $1,175,397, expenses of $2,060,596 and total assets of $10,135,337 at year end.

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