STRATEGY STUDIO / PUBLIC DATA EXPLORER

WILLIAM A SIEKMAN FOUNDATION

Cite this

Plain text WILLIAM A SIEKMAN FOUNDATION. Strategy Studio, nonprofit organization profile, tax years 2010–2025. https://strategystudio.org/org/396539731. Retrieved 2026-10-20.

APA Strategy Studio. (n.d.). WILLIAM A SIEKMAN FOUNDATION [Nonprofit organization profile; tax years 2010–2025]. Retrieved October 20, 2026, from https://strategystudio.org/org/396539731

MLA “WILLIAM A SIEKMAN FOUNDATION.” Strategy Studio, tax years 2010–2025, https://strategystudio.org/org/396539731. Accessed 20 Oct. 2026.

Retrieved 2026-10-20; covers tax years 2010–2025. Data: Strategy Studio, CC BY 4.0.

2025 · Form 990PF · revenue $180K · expenses $154K · assets $2.1M

EIN
39-6539731
Address
PO BOX 95672, CHICAGO, IL 60694-5672
NTEE code
-
Subsection
501(c)(3)
Ruling year
1992
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Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).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

3 people paid across every filing: current people first, then by total pay from this organization. Organizations counts every nonprofit each person appears on.

NameLatest titleYearsLatest year payTotal pay from hereOrganizations
Bmo Bank N A Institution TRUSTEE2023-2025 $29,670$78,841 130
Bmo Harris Bank Na Institution (former) TRUSTEE2018-2022 $22,780$106,472 160
Marshall & Ilsley Tr Co Na Institution (former) TRUSTEE2010-2011 $13,072$25,853 10

People by year

2025 · 1 person listed · 1 paid, $30K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO BANK N A Institution TRUSTEE2 $29,670-- $29,670130
2024 · 1 person listed · 1 paid, $27K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO BANK N A Institution TRUSTEE2 $27,275-- $27,275130
2023 · 1 person listed · 1 paid, $22K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO BANK N A Institution TRUSTEE2 $21,896-- $21,896130
2022 · 1 person listed · 1 paid, $23K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO HARRIS BANK N A Institution TRUSTEE2 $22,780-- $22,780160
2021 · 1 person listed · 1 paid, $24K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO HARRIS BANK N A Institution TRUSTEE2 $24,499-- $24,499160
2020 · 1 person listed · 1 paid, $22K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO HARRIS BANK N A Institution TRUSTEE2 $21,600-- $21,600160
2019 · 1 person listed · 1 paid, $21K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO HARRIS BANK N A Institution TRUSTEE2 $20,919-- $20,919160
2018 · 1 person listed · 1 paid, $17K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
BMO HARRIS BANK N A Institution TRUSTEE2 $16,674-- $16,674160
2011 · 1 person listed · 1 paid, $13K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MARSHALL & ILSLEY TR CO Institution TRUSTEE1 $13,072-$0 $13,07210
2010 · 1 person listed · 1 paid, $13K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
MARSHALL & ILSLEY TR CO Institution TRUSTEE1 $12,781-$0 $12,78110

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.

2025 · 24 grants to organizations · $122K
2024 · 24 grants to organizations · $110K
2023 · 25 grants to organizations · $115K
2022 · 27 grants to organizations · $132K
2021 · 26 grants to organizations · $116K
2020 · 27 grants to organizations · $115K
2019 · 26 grants to organizations · $114K
2018 · 29 grants to organizations · $118K
2011 · 0 grants to organizations · $0 · 1 summary line · $66K

This return lists 1 summary line (program totals pointing to a separate statement) instead of each grant. The itemized list was filed as an attachment that isn't in the IRS's public e-file data, so the recipients can't be shown.

2010 · 0 grants to organizations · $0 · 1 summary line · $63K

This return lists 1 summary line (program totals pointing to a separate statement) instead of each grant. The itemized list was filed as an attachment that isn't in the IRS's public e-file data, so the recipients can't be shown.

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

Who gave

No contributors are listed on Schedule B in the e-filed returns we have for this organization.

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
2025 · Form 990PF period ending 2025-12-31 · view filing · original 990 ↗
$180,246$153,710 $2,127,441$2,127,441 -- $29,670--
2024 · Form 990PF period ending 2024-12-31 · view filing · original 990 ↗
$122,771$138,586 $2,100,609$2,100,609 -- $27,275--
2023 · Form 990PF period ending 2023-12-31 · view filing · original 990 ↗
$85,823$137,724 $2,116,373$2,116,373 -- $21,896--
2022 · Form 990PF period ending 2022-12-31 · view filing · original 990 ↗
$34,820$158,327 $2,168,217$2,168,217 -- $22,780--
2021 · Form 990PF period ending 2021-12-31 · view filing · original 990 ↗
$139,755$141,756 $2,292,175$2,292,175 -- $24,499--
2020 · Form 990PF period ending 2020-12-31 · view filing · original 990 ↗
$12,293$137,130 $2,293,844$2,293,844 -- $21,600--
2019 · Form 990PF period ending 2019-12-31 · view filing · original 990 ↗
$74,543$140,594 $2,417,983$2,417,983 -- $20,919--
2018 · Form 990PF period ending 2018-12-31 · view filing · original 990 ↗
$219,907$137,317 $2,485,137$2,485,137 -- $16,674--
2011 · Form 990PF period ending 2011-12-31 · view filing · original 990 ↗
$127,110$83,803 $1,204,741$1,204,741 -- $13,072--
2010 · Form 990PF period ending 2010-12-31 · view filing · original 990 ↗
$121,234$77,430 $1,165,113$1,165,113 -- $12,781--

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
WILLIAM G & MARY A RYAN FOUNDATIONILNot reported $131,649$40,465 President$0 Similar name, revenue within 2x, same state
WILLIAM A STERN FOUNDATIONNCNot reported $160,750$156,192 VICE PRESIDE$0 Similar name, revenue within 2x
WILLIAM SOTE FOUNDATIONNYT22 $221,359$276,049 Co-trustee$38,253 Similar name, revenue within 2x
WILLIAM SAROYAN FOUNDATIONCANot reported $149,403$152,469 CHAIRMAN$0 Similar name, revenue within 2x
WILLIAM A HAGAN JR FOUNDATIONNYT12 $266,827$220,192 TRUSTEE$10,000 Similar name, revenue within 2x
WILLIAMS FOUNDATIONAZNot reported $181,817$198,565 President$0 Similar name, revenue within 2x
WILLIAMS FOUNDATIONMTT22 $112,409$88,381 PRESIDENT$0 Similar name, revenue within 2x
WILLIAMS FOUNDATIONMIL25 $110,129$110,129 DIRECTOR$0 Similar name, revenue within 2x
WILLIAM S ROWE FOUNDATIONOHNot reported $326,909$443,930 Chairman$0 Similar name, revenue within 2x
WILLIAM H CHAPMAN FOUNDATIONCTNot reported $227,052$423,616 SECRETARY$45,602 Similar name, revenue within 2x
WILLIAMSON FOUNDATIONCAT22 $204,793$195,097 EXECUTIVE DIRECTOR$32,500 Similar name, revenue within 2x
WILLIAMSON FOUNDATIONTXT20 $279,091$111,281 MANAGER$0 Similar name, revenue within 2x
WILLIAM FOX JR FOUNDATIONNYNot reported $165,780$257,751 PRESIDENT$0 Similar name, revenue within 2x
WILLIAM FLYNN FOUNDATIONPAN6A $236,377$173,543 PRESIDENT$72,500 Similar name, revenue within 2x
WILLIAM BYRON FOUNDATIONNCP12 $278,495$257,194 CEO, OFFICER$0 Similar name, revenue within 2x
WILLIAM A CARDINAL FOUNDATIONMIT20 $291,145$497,950 Director$40,000 Similar name, revenue within 2x
WILLIAMS MS FOUNDATIONWAG50 $150,000$25,000 Director$0 Similar name, revenue within 2x
WILLIAM M CAMP FOUNDATIONVAT22 $192,835$121,623 TREASURER$4,000 Similar name, revenue within 2x
WILLIAM G NASH FOUNDATIONCAF01 $164,240$557,616 Chairman$0 Similar name, revenue within 2x
WILLIAM M WEISS FOUNDATIONOHT22 $325,471$362,345 OFFICER$0 Similar name, revenue within 2x
WILLIAM F PRICE FOUNDATIONPANot reported $99,771$141,535 TRUSTEE$0 Similar name, revenue within 2x
WILLIAM W TREAT FOUNDATIONNHNot reported $338,007$162,378 TRUSTEE$3,500 Similar name, revenue within 2x
WILLIAM STEPHANIE FOUNDATIONCAS01 $93,972$72,117 President & CEO$0 Similar name, revenue within 2x
WILLIAM P NEWMAN FOUNDATION INCUTNot reported $254,597$66,275 Board Member$0 Similar name, revenue within 2x
WILLIAM C CONNER FOUNDATIONTXNot reported $234,141$113,987 TRUSTEE$1,660,349 Similar name, revenue within 2x

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
DONOR ADVISED CHARITABLE GIVING DAF sponsor$1,422,0166 42021–2024 WILLIAM BROWN FOUNDATION; WILLIAM JAMES FOUNDATION; WILLIAM BYRON FOUNDATION; WILLIAM G NASH FOUNDATION
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$268,5002 12023–2024 WILLIAM G NASH FOUNDATION
TAYLOR UNIVERSITY DAF sponsor$242,9753 12009–2013 WILLIAM TAYLOR FOUNDATION
OUR CHANGE FOUNDATION DAF sponsor$200,3771 12025–2025 WILLIAM FLYNN FOUNDATION
DAFFY CHARITABLE FUND DAF sponsor$125,0001 12024–2024 WILLIAM G NASH FOUNDATION
THE LENFEST INST FOR JOURNALISM SPE ASSET FUND OF THE PHL FOUNDATION DAF sponsor$40,0002 12012–2014 WILLIAM JAMES FOUNDATION
FORGOOD INC DAF sponsor$35,5653 12014–2020 WILLIAM JAMES FOUNDATION
BEN AND BONNIE WALKINGSTICK FOUNDATION Private foundation$25,0001 12022–2022 WILLIAM WALLACE FOUNDATION
STIEFEL FAMILY FOUNDATION Private foundation$13,0002 12012–2012 WILLIAM JAMES FOUNDATION
KYRO FOUNDATION Private foundation$12,2501 12022–2022 WILLIAMS FOUNDATION
SPARTANBURG COUNTY FOUNDATION DAF sponsor$10,5001 12025–2025 WILLIAM BYRON FOUNDATION
NATIONAL PHILANTHROPIC TR DAF sponsor$10,0001 12023–2023 WILLIAM G NASH FOUNDATION
NIA COMMUNITY FOUNDATION Private foundation$5,0001 12016–2016 WILLIAM JAMES FOUNDATION
THE CRYSTAL FAMILY FOUNDATION Private foundation$5,0001 12010–2010 WILLIAMS FOUNDATION
ANNE AND HENRY ZARROW FOUNDATION Private foundation$4,0001 12023–2023 WILLIAM WALLACE 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.

2025 · Form 990PF · $153,710 spent · pay $29,670 · grants $121,588 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $121,588 79.1%
Pay: officers, directors, trustees $29,670 19.3%
Taxes $2,452 1.6%
Total$153,710100%

View the filing

2024 · Form 990PF · $138,586 spent · pay $27,275 · grants $109,510 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $109,510 79.0%
Pay: officers, directors, trustees $27,275 19.7%
Taxes $1,801 1.3%
Total$138,586100%

View the filing

2023 · Form 990PF · $137,724 spent · pay $21,896 · grants $114,570 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $114,570 83.2%
Pay: officers, directors, trustees $21,896 15.9%
Taxes $1,250 0.9%
Other expenses $8 0.0%
Total$137,724100%

View the filing

2022 · Form 990PF · $158,327 spent · pay $22,780 · grants $132,076 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $132,076 83.4%
Pay: officers, directors, trustees $22,780 14.4%
Taxes $3,471 2.2%
Total$158,327100%

View the filing

2021 · Form 990PF · $141,756 spent · pay $24,499 · grants $116,144 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $116,144 81.9%
Pay: officers, directors, trustees $24,499 17.3%
Taxes $1,113 0.8%
Total$141,756100%

View the filing

2020 · Form 990PF · $137,130 spent · pay $21,600 · grants $114,560 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $114,560 83.5%
Pay: officers, directors, trustees $21,600 15.8%
Taxes $970 0.7%
Total$137,130100%

View the filing

2019 · Form 990PF · $140,594 spent · pay $20,919 · grants $114,490 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $114,490 81.4%
Pay: officers, directors, trustees $20,919 14.9%
Taxes $3,610 2.6%
Fees: accounting $1,575 1.1%
Total$140,594100%

View the filing

2018 · Form 990PF · $137,317 spent · pay $16,674 · grants $118,386 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $118,386 86.2%
Pay: officers, directors, trustees $16,674 12.1%
Fees: accounting $1,575 1.1%
Taxes $682 0.5%
Total$137,317100%

View the filing

2011 · Form 990PF · $83,803 spent · pay $13,072 · grants $66,466 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $66,466 79.3%
Pay: officers, directors, trustees $13,072 15.6%
Taxes $3,465 4.1%
Fees: accounting $800 1.0%
Total$83,803100%

View the filing

2010 · Form 990PF · $77,430 spent · pay $12,781 · grants $62,700 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $62,700 81.0%
Pay: officers, directors, trustees $12,781 16.5%
Taxes $1,149 1.5%
Fees: other professional $800 1.0%
Total$77,430100%

View the filing