MARATHON FOUNDATION

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Plain text MARATHON FOUNDATION. furp.org, nonprofit organization profile, tax years 2019–2025. https://furp.org/org/marathon-foundation-273518399. Retrieved 2026-11-02.

APA furp.org. (n.d.). MARATHON FOUNDATION [Nonprofit organization profile; tax years 2019–2025]. Retrieved November 2, 2026, from https://furp.org/org/marathon-foundation-273518399

MLA “MARATHON FOUNDATION.” furp.org, tax years 2019–2025, https://furp.org/org/marathon-foundation-273518399. Accessed 2 Nov. 2026.

Retrieved 2026-11-02; covers tax years 2019–2025. Data: furp.org, CC BY 4.0.

2025 · Form 990PF · revenue $179K · expenses $179K · assets $375K

EIN
27-3518399
Address
20742 STONE OAK PKWY STE 107, SAN ANTONIO, TX 78258-7538
Website
WWW.THEMARATHONFOUNDATION.ORG
NTEE code
T21
Exempt type
501(c)(3): charitable, religious, educational, scientific or literary (corporation)
Ruling date
February 2011 (when the IRS recognized its exemption)
IRS status
Exempt (unconditional) (IRS Business Master File) IRS data ↗
Tax-deductible donations
Yes: listed in IRS Publication 78 (private foundation) Pub 78 ↗
Foundation status
Private non-operating foundation
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Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).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

1 person 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
Shannon Carter EXECUTIVE DI2025 $17,000$17,000 1

Officers and directors, no compensation reported

6 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

NameLatest titleYearsHrs/wk (latest)CompensationOrganizations
Claudia Huntington PRESIDENT2019-2025 3 $0 reported 1
Marshall B Miller Jr VICE PRES/SE2019-2025 1 $0 reported 1
Bruce A Blakemore VICE PRES/TR2019-2025 1 $0 reported 1
Prentice Miller BOARD MEMBER2024-2025 1 $0 reported 1
Paige Shafer BOARD MEMBER2020-2025 1 $0 reported 1
Reid H Miller (former) VP SCHOLARSH2019-2023 1 $0 reported 1

People by year

2025 · 6 people listed · 1 paid, $17K
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
SHANNON CARTER EXECUTIVE DI12 $17,000-$0 $17,0001
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
PRENTICE MILLER BOARD MEMBER1 $0-$0 $01
PAIGE SHAFER BOARD MEMBER1 $0-$0 $01
2024 · 5 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
PRENTICE MILLER BOARD MEMBER1 $0-$0 $01
PAIGE SHAFER EXECUTIVE DI1 $0-$0 $01
2023 · 5 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
REID H MILLER VP SCHOLARSH1 $0-$0 $01
PAIGE SHAFER VICE PRESIDE1 $0-$0 $01
2022 · 5 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
REID H MILLER VP SCHOLARSH1 $0-$0 $01
PAIGE SHAFER VICE PRESIDE1 $0-$0 $01
2021 · 5 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
REID H MILLER VP SCHOLARSH1 $0-$0 $01
PAIGE SHAFER VICE PRESIDE1 $0-$0 $01
2020 · 5 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
REID H MILLER VP SCHOLARSH1 $0-$0 $01
PAIGE SHAFER VICE PRESIDE1 $0-$0 $01
2019 · 4 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
CLAUDIA HUNTINGTON PRESIDENT3 $0-$0 $01
MARSHALL B MILLER JR VICE PRES/SE1 $0-$0 $01
BRUCE A BLAKEMORE VICE PRES/TR1 $0-$0 $01
REID H MILLER VP SCHOLARSH1 $0-$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.

2025 · 0 grants to organizations · $0 · 18 grants to individuals · $151K
2024 · 0 grants to organizations · $0 · 13 grants to individuals · $79K
2023 · 0 grants to organizations · $0 · 14 grants to individuals · $58K
2022 · 0 grants to organizations · $0 · 5 grants to individuals · $22K
2021 · 0 grants to organizations · $0 · 10 grants to individuals · $35K
2020 · 1 grant to organizations · $11K · 4 grants to individuals · $7K
2019 · 4 grants to organizations · $29K · 5 grants to individuals · $8K

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.

2025 · 8 contributors · $129K
#ContributorTypeCity, stateTotalNoncashSource
7 ONE ELEVEN MINERAL PARTNERSHIP Organization or other SAN ANTONIO, TX $30,000- Form 990PF Sch. B, 2025 · filing
1 CLAUDIA HUNTINGTON Person SAN ANTONIO, TX $25,000- Form 990PF Sch. B, 2025 · filing
2 MARSHALL B MILLER JR Person SAN ANTONIO, TX $25,000- Form 990PF Sch. B, 2025 · filing
3 BRUCE A BLAKEMORE Person SAN ANTONIO, TX $20,000- Form 990PF Sch. B, 2025 · filing
4 WILLIAM S HARTE Person SAN ANTONIO, TX $10,000- Form 990PF Sch. B, 2025 · filing
8 ALAN CHESLER LAURA EHRENBERG-CHESL Person SAN ANTONIO, TX $9,460$9,460 Form 990PF Sch. B, 2025 · filing
5 IVONNE DURANT Person MARATHON, TX $5,000- Form 990PF Sch. B, 2025 · filing
6 TIMOTHY SANDY ARMOUR Person PALOS VERDES ESTATES, CA $5,000- Form 990PF Sch. B, 2025 · filing
2024 · 4 contributors · $55K
#ContributorTypeCity, stateTotalNoncashSource
1 BRUCE A BLAKEMORE Person SAN ANTONIO, TX $25,000- Form 990PF Sch. B, 2024 · filing
2 GLENBROOK PARTNERS DE LP Organization or other SAN ANTONIO, TX $12,500- Form 990PF Sch. B, 2024 · filing
3 MBM RE DEVELOPMENT INVESTMENTS LLC Person SAN ANTONIO, TX $12,500- Form 990PF Sch. B, 2024 · filing
4 IVONNE DURANT Person MARATHON, TX $5,000- Form 990PF Sch. B, 2024 · filing
2023 · 5 contributors · $59K
#ContributorTypeCity, stateTotalNoncashSource
3 BRUCE A BLAKEMORE Person SAN ANTONIO, TX $20,000- Form 990PF Sch. B, 2023 · filing
5 AMERICAN ENDOWMENT FOUNDATION Person HUDSON, OH $15,000- Form 990PF Sch. B, 2023 · filing
4 PERMIAN BASIN AREA FOUNDATION Person MIDLAND, TX $13,689- Form 990PF Sch. B, 2023 · filing
1 CLAUDIA HUNTINGTON Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2023 · filing
2 MARSHALL B MILLER JR Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2023 · filing
2022 · 5 contributors · $38K
#ContributorTypeCity, stateTotalNoncashSource
4 PERMIAN BASIN AREA FOUNDATION Person MIDLAND, TX $13,251- Form 990PF Sch. B, 2022 · filing
3 BRUCE A BLAKEMORE Person SAN ANTONIO, TX $10,000- Form 990PF Sch. B, 2022 · filing
1 CLAUDIA HUNTINGTON Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2022 · filing
2 MARSHALL B MILLER JR Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2022 · filing
5 AMERICAN ENDOWMENT FOUNDATION Person HUDSON, OH $5,000- Form 990PF Sch. B, 2022 · filing
2021 · 1 contributor · $13K
#ContributorTypeCity, stateTotalNoncashSource
1 PERMIAN BASIN AREA FOUNDATION Person MIDLAND, TX $12,686- Form 990PF Sch. B, 2021 · filing
2020 · 5 contributors · $57K
#ContributorTypeCity, stateTotalNoncashSource
4 KATHLEEN S FISHER Person CAMBRIDGE, MA $25,000- Form 990PF Sch. B, 2020 · filing
3 PERMIAN BASIN AREA FOUNDATION Person MIDLAND, TX $12,000- Form 990PF Sch. B, 2020 · filing
5 ROGER EVANS WINTER Person FREDERICKSBURG, TX $10,000- Form 990PF Sch. B, 2020 · filing
1 CLAUDIA HUNTINGTON Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2020 · filing
2 MARSHALL B MILLER JR Person SAN ANTONIO, TX $5,000- Form 990PF Sch. B, 2020 · filing
2019 · 1 contributor · $10K
#ContributorTypeCity, stateTotalNoncashSource
1 JOAN AND HERB KELLEHER CHARITABLE F Person SAN ANTONIO, TX $10,000- 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
2025 · Form 990PF period ending 2025-12-31 · view filing · original 990 ↗
$179,127$178,649 $374,753$374,753 $136,644- $17,000--
2024 · Form 990PF period ending 2024-12-31 · view filing · original 990 ↗
$94,835$98,477 $374,598$374,598 $62,850- ---
2023 · Form 990PF period ending 2023-12-31 · view filing · original 990 ↗
$81,642$94,579 $378,371$378,371 $67,689- ---
2022 · Form 990PF period ending 2022-12-31 · view filing · original 990 ↗
$57,327$56,475 $391,448$391,448 $45,251- ---
2021 · Form 990PF period ending 2021-12-31 · view filing · original 990 ↗
$60,604$71,877 $391,004$391,004 $17,601- ---
2020 · Form 990PF period ending 2020-12-31 · view filing · original 990 ↗
$74,456$48,120 $402,277$402,277 $61,600- ---
2019 · Form 990PF period ending 2019-12-31 · view filing · original 990 ↗
$38,442$66,023 $375,941$375,941 $19,471- ---

Funders of this organization

2 grantors reported grants to this organization, $166,626 in all, tax years 2016 to 2023. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

GrantorTypeMatchYears givenGrantsTotalLatest yearLatest year's amountGrants
PERMIAN BASIN AREA FOUNDATION DAF sponsor Exact 2016, 2018, 2020-2023 6$146,626 2023$13,689
show
AMERICAN ENDOWMENT FOUNDATION DAF sponsor Exact 2022-2023 2$20,000 2023$15,000
show

Nearby + Similar BETA

Organizations like this one: what they do and who they are linked to

Same category: NTEE code and revenue

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
MIDWAY FOUNDATIONTXT21 $95,178$67,985 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state, similar name
TNB FOUNDATIONTXT21 $209,938$83,939 TRUSTEE$0 Same NTEE code T21, revenue within 2x, same state, similar name
E & M FOUNDATION INCTXT21 $118,697$183,169 DIRECTOR$0 Same NTEE code T21, revenue within 2x, same state, similar name
EOSERA FOUNDATIONTXT21 $133,732$68,401 DIRECTOR$0 Same NTEE code T21, revenue within 2x, same state, similar name
BUZBEE FOUNDATIONTXT21 $114,565$93,998 Trustee$0 Same NTEE code T21, revenue within 2x, same state, similar name
BIGLARI FOUNDATIONTXT21 $337,501$323,941 TRUSTEE$0 Same NTEE code T21, revenue within 2x, same state, similar name
MCBEE FAMILY FOUNDATIONTXT21 $98,414$170,643 PRESIDENT/TREASURER$0 Same NTEE code T21, revenue within 2x, same state, similar name
TCBS FOUNDATION INCTXT21 $99,222$43,470 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
RACKSPACE FOUNDATIONTXT21 $149,093$297,549 Treasurer$0 Same NTEE code T21, revenue within 2x, same state
TEX MEX LEGACY FOUNDATIONTXT21 $238,968$108,473 CHAIRMAN$0 Same NTEE code T21, revenue within 2x, same state
WONG FAMILY FOUNDATIONTXT21 $252,705$159,146 DIRECTOR$0 Same NTEE code T21, revenue within 2x, same state
ONCOR CARES FOUNDATIONTXT21 $129,455$667,236 CHAIRMAN/PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
GROSE FAMILY FOUNDATIONTXT21 $104,317$53,885 President$0 Same NTEE code T21, revenue within 2x, same state
ARENA ENERGY FOUNDATIONTXT21 $298,273$351,032 DIRECTOR$0 Same NTEE code T21, revenue within 2x, same state
KOS EMPLOYEE FOUNDATIONTXT21 $102,904$68,905 President$0 Same NTEE code T21, revenue within 2x, same state
ADVOCATE FOUNDATION INCTXT21 $336,138$458,916 Board Chair$0 Same NTEE code T21, revenue within 2x, same state
THOMAS J MORAN FAMILY FOUNDATIONTXT21 $113,989$170,000 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
STEWART TITLE FOUNDATIONTXT21 $186,046$892,221 President$0 Same NTEE code T21, revenue within 2x, same state
TOMBLIN FAMILY FOUNDATIONTXT21 $204,291$218,797 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
CARING FRIENDS FOUNDATIONTXT21 $219,666$279,860 TRUSTEE$57,259 Same NTEE code T21, revenue within 2x, same state
GLASS BELMONT FOUNDATIONTXT21 $107,339$9,413 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
LIGHT A CANDLE FOUNDATIONTXT21 $181,501$252,147 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
INVESTAR IMPACT FOUNDATIONTXT21 $174,757$151,206 DIRECTOR/CHAIRMAN$0 Same NTEE code T21, revenue within 2x, same state
OESCHGER FAMILY FOUNDATIONTXT21 $296,618$486,848 PRESIDENT$0 Same NTEE code T21, revenue within 2x, same state
COPART PRIVATE FOUNDATIONTXT21 $106,760$217,952 President$0 Same NTEE code T21, revenue within 2x, same state

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
WAL-DOT FOUNDATION Private foundation$1,250,0002 12011–2015 SUSAN SCHWARTZ FAMILY FOUNDATION
SEMPRA ENERGY FOUNDATION Private foundation$500,0001 12020–2020 ONCOR CARES FOUNDATION
THE MIAMI FOUNDATION INC DAF sponsor$226,9316 12021–2025 ADVOCATE FOUNDATION INC
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$208,0107 32016–2023 PROMISE FOUNDATION; URBAN OUTREACH INCORPORATED; RACKSPACE FOUNDATION
SILICON VALLEY COMMUNITY FOUNDATION DAF sponsor$194,7003 12022–2024 ADVOCATE FOUNDATION INC
MCPHERSON COUNTY COMMUNITY FOUNDATION DAF sponsor$168,10012 12011–2025 URBAN OUTREACH INCORPORATED
NATIONAL PHILANTHROPIC TR DAF sponsor$136,5006 32016–2022 PROMISE FOUNDATION; RABA KISTNER CHARITABLE FOUNDATION; DESIGN INSPIRATIONS
THE DALLAS FOUNDATION DAF sponsor$116,0002 12020–2024 ADVOCATE FOUNDATION INC
COMMUNITIES FOUNDATION OF TEXAS DAF sponsor$102,6754 12021–2024 ADVOCATE FOUNDATION INC
PERMIAN BASIN AREA FOUNDATION funds this one DAF sponsor$92,0257 12011–2024 MIDLAND TEEN COURT INC
SHELL USA COMPANY FOUNDATION Private foundation$91,5007 12016–2024 URBAN OUTREACH INCORPORATED
HELEN GREATHOUSE CHARITABLE TRUST Private foundation$50,0005 12021–2025 MIDLAND TEEN COURT INC
JEWISH COMMUNAL FUND DAF sponsor$42,5305 12009–2016 PROMISE FOUNDATION
HENRY FOUNDATION Private foundation$40,0002 12015–2016 MIDLAND TEEN COURT INC
FASKEN FOUNDATION Private foundation$36,0003 12020–2023 MIDLAND TEEN COURT INC

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 · $178,649 spent · pay $17,000 · grants $151,395 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $151,395 84.7%
Pay: officers, directors, trustees $17,000 9.5%
Fees: other professional $6,333 3.5%
Other expenses $3,568 2.0%
Taxes $353 0.2%
Total$178,649100%

View the filing

2024 · Form 990PF · $98,477 spent · pay $0 · grants $78,897 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $78,897 80.1%
Fees: other professional $16,500 16.8%
Other expenses $2,574 2.6%
Taxes $506 0.5%
Total$98,477100%

View the filing

2023 · Form 990PF · $94,579 spent · pay $0 · grants $58,177 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $58,177 61.5%
Fees: other professional $29,000 30.7%
Fees: accounting $4,625 4.9%
Other expenses $2,472 2.6%
Taxes $305 0.3%
Total$94,579100%

View the filing

2022 · Form 990PF · $56,475 spent · pay $0 · grants $22,000 · events $0
LineAs describedTotalShare
Fees: other professional $29,000 51.4%
Contributions, gifts, grants paid $22,000 39.0%
Other expenses $3,142 5.6%
Fees: accounting $2,025 3.6%
Taxes $308 0.5%
Total$56,475100%

View the filing

2021 · Form 990PF · $71,877 spent · pay $0 · grants $35,446 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $35,446 49.3%
Fees: other professional $29,000 40.3%
Fees: accounting $4,305 6.0%
Other expenses $2,915 4.1%
Taxes $211 0.3%
Total$71,877100%

View the filing

2020 · Form 990PF · $48,120 spent · pay $0 · grants $17,470 · events $0
LineAs describedTotalShare
Fees: other professional $24,500 50.9%
Contributions, gifts, grants paid $17,470 36.3%
Fees: accounting $3,000 6.2%
Other expenses $2,447 5.1%
Taxes $703 1.5%
Total$48,120100%

View the filing

2019 · Form 990PF · $66,023 spent · pay $0 · grants $36,430 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $36,430 55.2%
Fees: other professional $24,500 37.1%
Fees: accounting $3,075 4.7%
Other expenses $1,759 2.7%
Taxes $259 0.4%
Total$66,023100%

View the filing

State business registration

The same business name in the same state, from the state’s official registry data.

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