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MARKOS FOUNDATION

Cite this

Plain text MARKOS FOUNDATION. Strategy Studio, nonprofit organization profile, tax years 2019–2024. https://strategystudio.org/org/391836400. Retrieved 2026-10-18.

APA Strategy Studio. (n.d.). MARKOS FOUNDATION [Nonprofit organization profile; tax years 2019–2024]. Retrieved October 18, 2026, from https://strategystudio.org/org/391836400

MLA “MARKOS FOUNDATION.” Strategy Studio, tax years 2019–2024, https://strategystudio.org/org/391836400. Accessed 18 Oct. 2026.

Retrieved 2026-10-18; covers tax years 2019–2024. Data: Strategy Studio, CC BY 4.0.

2024 · Form 990PF · revenue $256K · expenses $149K · assets $2.3M

EIN
39-1836400
Address
PO BOX 5507, MADISON, WI 53705-0507
NTEE code
T99Z
Subsection
501(c)(3)
Ruling year
1996
Cross-check
ProPublica Nonprofit Explorer

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

No one listed on these returns was paid.

Unpaid officers and directors · 6 people
NameLatest titleYearsOrganizations
Dennis Markos PRESIDENT/DIRECTOR2019-2024 1
Carol Markos VICE PRESIDENT/SEC/TREAS2019-2024 1
William Bill Conlon (former) DIRECTOR2019 1
James Lorimer (former) DIRECTOR2019 1
Matthew Anna Bluhm (former) DIRECTOR2019 1
Mary L Klein (former) MANAGER2019 1

People by year

2024 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01
2023 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01
2022 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01
2021 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01
2020 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01
2019 · 6 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
DENNIS MARKOS PRESIDENT/DIRECTOR0 $0-- $01
WILLIAM BILL CONLON DIRECTOR0 $0-- $01
JAMES LORIMER DIRECTOR0 $0-- $01
MATTHEW ANNA BLUHM DIRECTOR0 $0-- $01
MARY L KLEIN MANAGER0 $0-- $01
CAROL MARKOS VICE PRESIDENT/SEC/TREAS0 $0-- $01

Highest-paid independent contractors

No independent contractors reported.

Who the money went to

Grants this organization reported paying: Schedule I Part II of the Form 990, or the grants-paid list on the 990-PF. Open a year for every recipient. Recipients link to their own page when the grant names an EIN we have (990-PF grants list no EIN, so those link only on an exact, unique name and state). Grants to individuals are counted; their names are not shown.

2024 · 16 grants to organizations · $104K
2023 · 19 grants to organizations · $108K
2022 · 25 grants to organizations · $124K
2021 · 17 grants to organizations · $96K
2020 · 15 grants to organizations · $80K
2019 · 17 grants to organizations · $42K

Negative amounts are returned or refunded grants; they are listed last and left out of the totals of grants paid.

Who gave

Contributors listed on Schedule B of the Form 990-PF: name, city and state as filed (street addresses are not shown), with total and noncash contributions for the year. A link to an organization's page is tagged Fuzzy with its name-similarity score (0 to 1) when it rests on name and state; Schedule B lists no EIN, so no link here is an exact identifier match.

2024 · 4 contributors · $11K
#ContributorTypeCity, stateTotalNoncashSource
1 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2024 · filing
2 MICHAEL J LARSON Person MADISON, WI $5,000- Form 990PF Sch. B, 2024 · filing
3 NATHAN D AND KRISTA N ELIAS Person VERONA, WI $1,000- Form 990PF Sch. B, 2024 · filing
4 MARK REICHELDERFER IRA Person MADISON, WI $200- Form 990PF Sch. B, 2024 · filing
2023 · 3 contributors · $10K
#ContributorTypeCity, stateTotalNoncashSource
1 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2023 · filing
3 HANKSCRAFT INC Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2023 · filing
2 MARK REICHELDERFER IRA Person MADISON, WI $200- Form 990PF Sch. B, 2023 · filing
2022 · 4 contributors · $18K
#ContributorTypeCity, stateTotalNoncashSource
2 HANKSCRAFT INC Person REEDSBURG, WI $10,000- Form 990PF Sch. B, 2022 · filing
1 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2022 · filing
4 WILLIAM CONLON Person CHICAGO, IL $2,500- Form 990PF Sch. B, 2022 · filing
3 MARK REICHELDERFER IRA Person MADISON, WI $200- Form 990PF Sch. B, 2022 · filing
2021 · 3 contributors · $10K
#ContributorTypeCity, stateTotalNoncashSource
1 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2021 · filing
2 HANKSCRAFT INC Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2021 · filing
3 MARK PAMELA REICHELDERFER Person MADISON, WI $200- Form 990PF Sch. B, 2021 · filing
2020 · 2 contributors · $10K
#ContributorTypeCity, stateTotalNoncashSource
1 HANKSCRAFT INC Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2020 · filing
2 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2020 · filing
2019 · 1 contributor · $5K
#ContributorTypeCity, stateTotalNoncashSource
1 SOUND DEVICES Person REEDSBURG, WI $5,000- Form 990PF Sch. B, 2019 · filing

Contributors listed here are as reported on the filing. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

RevenueExpensesAssetsNet assetsContributionsProgram revenueOfficer payEmployeesVolunteers
2024 · Form 990PF period ending 2025-06-30 · view filing · original 990 ↗
$255,743$148,987 $2,294,374$2,294,374 $11,200- $0--
2023 · Form 990PF period ending 2024-06-30 · view filing · original 990 ↗
$104,078$141,164 $2,187,225$2,187,225 $10,200- $0--
2022 · Form 990PF period ending 2023-06-30 · view filing · original 990 ↗
$241,460$164,723 $2,229,603$2,229,603 $17,700- ---
2021 · Form 990PF period ending 2022-06-30 · view filing · original 990 ↗
$289,936$136,858 $2,160,061$2,160,061 $10,200- ---
2020 · Form 990PF period ending 2021-06-30 · view filing · original 990 ↗
$154,091$122,646 $2,005,187$2,005,187 $10,000- ---
2019 · Form 990PF period ending 2020-06-30 · view filing · original 990 ↗
$167,978$74,799 $1,973,745$1,973,745 $9,700- ---

Funders of this organization

Not reported: no grants to this organization appear in the filings we have (tax years 2010 to 2025).

Similar organizations

Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)

OrganizationStateNTEELatest revenueLatest expensesTop-paid titleTop payWhy similar
MARK AND SALLY EGAN FOUNDATION INCWIT99 $346,003$1,022,485 PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
LINK FAMILY FOUNDATIONWIT99 $368,137$107,163 PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
FIRST WEBER FOUNDATION INCWIT99 $316,608$246,299 President$0 Same NTEE code T99, revenue within 2x, same state
GROVER FAMILY FOUNDATION INCWIT99 $158,741$188,299 PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
LOUIS STEWART FOUNDATION INCWIT99 $234,088$273,230 DIRECTOR$0 Same NTEE code T99, revenue within 2x, same state
HAMILTON EDUCATIONAL FOUNDATION INCWIT99 $155,531$219,093 CO-EXECUTIVE DIRECTOR$16,921 Same NTEE code T99, revenue within 2x, same state
ASSOCIATION OF STATE FLOODPLAIN MANAGERS FOUNDATIONWIT99 $249,068$202,545 SECRETARY$220,520 Same NTEE code T99, revenue within 2x, same state
AUSTIN REINHART AND FAMILY FOUNDATION INCWIT99 $195,438$134,171 PRESIDENT/TREASURER$0 Same NTEE code T99, revenue within 2x, same state
PAUL O AND CAROL H GEHL FAMILY FOUNDATION INCWIT99 $264,857$766,976 President / Treasurer$0 Same NTEE code T99, revenue within 2x, same state
GIVING TO THE NATIONS INCWIT99 $165,638$147,668 EXECUTIVE DI$0 Same NTEE code T99, revenue within 2x, same state
WISCONSIN ELKS BENEVOLENT FUND INCWIT99 $469,066$428,935 WEA AT LARGE TRUSTEE$0 Same NTEE code T99, revenue within 2x, same state
ALFRED J LOFTUS CHARITABLE TRUSTWIT99 $282,580$182,351 TRUSTEE$43,749 Same NTEE code T99, revenue within 2x, same state
POWERS-WOLFE CHARITABLE TRUSTWIT99 $283,371$750,060 TRUSTEE$0 Same NTEE code T99, revenue within 2x, same state
IMPACT100 GREATER WAUSAUWIT99 $190,998$70,448 CO-PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
CHARITYEZ INCWIT99 $159,079$196,706 PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
RED LETTER GRANT INCWIT99 $138,743$147,036 PRESIDENT$0 Same NTEE code T99, revenue within 2x, same state
MACK FOUNDATIONWAT99 $180,671$323,230 TRUSTEE$0 Same NTEE code T99, revenue within 2x, similar name
MAY FAM FOUNDATIONCOT99 $180,418$228,715 CO-TRUSTEE$0 Same NTEE code T99, revenue within 2x, similar name
MAMDANI FOUNDATIONFLT99 $199,127$161,432 PRESIDENT$0 Same NTEE code T99, revenue within 2x, similar name
RWH FOUNDATIONTXT99 $274,576$343,970 PRESIDENT$0 Same NTEE code T99, revenue within 2x, similar name
DHM FOUNDATIONMST99 $332,575$42,938 TRUSTEE$0 Same NTEE code T99, revenue within 2x, similar name
MURLAN FOUNDATIONOHT99 $192,210$149,921 PRESIDENT$0 Same NTEE code T99, revenue within 2x, similar name
SHC FOUNDATIONILT99 $177,454$178,919 President$0 Same NTEE code T99, revenue within 2x, similar name
KOCA FOUNDATIONCAT99 $230,379$38,537 CEO$0 Same NTEE code T99, revenue within 2x, similar name
TAHOE MARITIME FOUNDATIONCAT99 $323,495$251,601 DIRECTOR$0 Same NTEE code T99, revenue within 2x, similar name

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

GrantorTypeTotal givenGrantsOrganizations fundedYearsWhich ones
SILICON VALLEY COMMUNITY FOUNDATION DAF sponsor$5,352,6844 22010–2014 INTERVALIEN FOUNDATION; TAHOE MARITIME FOUNDATION
DANE G HANSEN FOUNDATION Private foundation$708,91811 12020–2025 CITIZENS FOUNDATION
DONOR ADVISED CHARITABLE GIVING DAF sponsor$484,6798 52014–2024 TAHOE MARITIME FOUNDATION; THRIVE FOUNDATION; MOCKINGBIRD FOUNDATION INC; RUKWA FOUNDATION and 1 more
TERRY AND BARBARA ENGLAND FOUNDATION Private foundation$250,0001 12025–2025 URBANA PARKS FOUNDATION
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$233,85011 42016–2024 RUKWA FOUNDATION; KELLY CARES FOUNDATION; URBANA PARKS FOUNDATION; THRIVE FOUNDATION
FRIENDS OF MOSDOT GOOR INC DAF sponsor$218,8002 12022–2023 WAY OF JOY FOUNDATION
UNIVERSITY OF NOTRE DAME DU LAC DAF sponsor$204,10910 12009–2019 KELLY CARES FOUNDATION
VANGUARD CHARITABLE ENDOWMENT PROGRAM DAF sponsor$193,80010 32020–2024 MOCKINGBIRD FOUNDATION INC; URBANA PARKS FOUNDATION; RUKWA FOUNDATION
MASIN FAMILY FOUNDATION Private foundation$125,0001 12023–2023 THE JOANNE E MASIN FOUNDATION
OREGON COMMUNITY FOUNDATION DAF sponsor$106,6575 22021–2024 DREXEL H FOUNDATION; GRAYES FOUNDATION INC
NATIONAL PHILANTHROPIC TR DAF sponsor$82,4004 22017–2024 KELLY CARES FOUNDATION; MOCKINGBIRD FOUNDATION INC
COLLIER COMMUNITY FOUNDATION INC DAF sponsor$75,0001 12019–2019 TAHOE MARITIME FOUNDATION
AMERICAN ENDOWMENT FOUNDATION DAF sponsor$52,5003 22019–2022 KELLY CARES FOUNDATION; MOCKINGBIRD FOUNDATION INC
GREATER NORTHWEST KANSAS COMMUNITY FOUNDATION DAF sponsor$50,3554 12015–2024 CITIZENS FOUNDATION
PATTERSON FAMILY FOUNDATION Private foundation$50,0001 12023–2023 CITIZENS FOUNDATION

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

2024 · Form 990PF · $148,987 spent · pay $0 · grants $103,500 · events $1,083
LineAs describedTotalShare
Contributions, gifts, grants paid $103,500 69.5%
Fees: other professional $38,620 25.9%
Taxes $3,009 2.0%
Fees: accounting $1,750 1.2%
Travel, conferences and meetings $1,083 0.7%
Other expenses $1,025 0.7%
Total$148,987100%

View the filing

2023 · Form 990PF · $141,164 spent · pay $0 · grants $108,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $108,500 76.9%
Fees: other professional $29,290 20.7%
Fees: accounting $2,500 1.8%
Taxes $689 0.5%
Other expenses $185 0.1%
Total$141,164100%

View the filing

2022 · Form 990PF · $164,723 spent · pay $0 · grants $124,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $124,000 75.3%
Fees: other professional $30,968 18.8%
Taxes $6,605 4.0%
Fees: accounting $2,500 1.5%
Other expenses $650 0.4%
Total$164,723100%

View the filing

2021 · Form 990PF · $136,858 spent · pay $0 · grants $96,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $96,500 70.5%
Fees: other professional $35,554 26.0%
Fees: accounting $2,500 1.8%
Taxes $2,212 1.6%
Other expenses $92 0.1%
Total$136,858100%

View the filing

2020 · Form 990PF · $122,646 spent · pay $0 · grants $80,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $80,500 65.6%
Fees: other professional $31,803 25.9%
Fees: accounting $5,000 4.1%
Taxes $4,087 3.3%
Other expenses $1,256 1.0%
Total$122,646100%

View the filing

2019 · Form 990PF · $74,799 spent · pay $0 · grants $42,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $42,500 56.8%
Fees: other professional $30,222 40.4%
Taxes $1,881 2.5%
Other expenses $196 0.3%
Total$74,799100%

View the filing