STRATEGY STUDIO / PUBLIC DATA EXPLORER

WHALESBACK FOUNDATION

Cite this

Plain text WHALESBACK FOUNDATION. Strategy Studio, nonprofit organization profile, tax years 2011–2025. https://strategystudio.org/org/311478498. Retrieved 2026-10-20.

APA Strategy Studio. (n.d.). WHALESBACK FOUNDATION [Nonprofit organization profile; tax years 2011–2025]. Retrieved October 20, 2026, from https://strategystudio.org/org/311478498

MLA “WHALESBACK FOUNDATION.” Strategy Studio, tax years 2011–2025, https://strategystudio.org/org/311478498. Accessed 20 Oct. 2026.

Retrieved 2026-10-20; covers tax years 2011–2025. Data: Strategy Studio, CC BY 4.0.

2025 · Form 990PF · revenue $138K · expenses $221K · assets $4.2M

EIN
31-1478498
Address
1 PIERREPONT ST, BROOKLYN, NY 11201-3302
NTEE code
T20Z
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Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).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

None of the 2 people listed on these returns reported compensation from the organization. They are listed below.

Officers and directors, no compensation reported

2 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
Theodore Roosevelt Iv PRES./SECT./TREAS./TRUSTEE2011-2025 0 $0 reported 1
Constance Roosevelt TRUSTEE2011-2025 0 $0 reported 1

People by year

2025 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2024 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2023 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2022 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2021 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2020 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2019 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2018 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2017 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2016 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2015 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2014 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2013 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2012 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $0-$0 $01
2011 · 2 people listed · none paid
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
THEODORE ROOSEVELT IV PRES./SECT./TREAS./TRUSTEE0 $0-$0 $01
CONSTANCE ROOSEVELT TRUSTEE0 $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 · 2 grants to organizations · $514K

Listed grants add up to $514,250; the return's “grants paid” expense line says $205,867. Returns can differ here (grants paid vs. accrued, items listed elsewhere); check the filing.

2024 · 3 grants to organizations · $396K

Listed grants add up to $395,548; the return's “grants paid” expense line says $224,303. Returns can differ here (grants paid vs. accrued, items listed elsewhere); check the filing.

2023 · 8 grants to organizations · $409K
2022 · 19 grants to organizations · $438K
2021 · 20 grants to organizations · $314K
2020 · 19 grants to organizations · $320K · 1 returned · -$15K
2019 · 25 grants to organizations · $300K
2018 · 25 grants to organizations · $271K
2017 · 24 grants to organizations · $250K
2016 · 25 grants to organizations · $256K
2015 · 20 grants to organizations · $257K
2014 · 15 grants to organizations · $249K
2013 · 17 grants to organizations · $183K
2012 · 17 grants to organizations · $228K
2011 · 13 grants to organizations · $175K

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.

2016 · 1 contributor · $25K
#ContributorTypeCity, stateTotalNoncashSource
1 THEODORE ROOSEVELT IV Person BROOKLYN, NY $25,000$25,000 Form 990PF Sch. B, 2016 · 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 ↗
$137,517$221,240 $4,248,937$4,248,937 -- $0--
2024 · Form 990PF period ending 2024-12-31 · view filing · original 990 ↗
$214,572$244,238 $4,332,660$4,332,660 -- $0--
2023 · Form 990PF period ending 2023-12-31 · view filing · original 990 ↗
$369,265$431,502 $4,362,326$4,362,326 -- $0--
2022 · Form 990PF period ending 2022-12-31 · view filing · original 990 ↗
$394,457$451,555 $4,414,297$4,414,297 -- $0--
2021 · Form 990PF period ending 2021-12-31 · view filing · original 990 ↗
$347,678$330,025 $4,460,085$4,460,085 -- $0--
2020 · Form 990PF period ending 2020-12-31 · view filing · original 990 ↗
$190,797$311,102 $4,442,694$4,442,694 -- $0--
2019 · Form 990PF period ending 2019-12-31 · view filing · original 990 ↗
$158,313$304,631 $4,577,502$4,562,502 -- $0--
2018 · Form 990PF period ending 2018-12-31 · view filing · original 990 ↗
$137,218$275,917 $4,600,917$4,600,917 -- $0--
2017 · Form 990PF period ending 2017-12-31 · view filing · original 990 ↗
-$86,321$254,972 $4,733,959$4,733,959 -- $0--
2016 · Form 990PF period ending 2016-12-31 · view filing · original 990 ↗
$223,870$272,109 $5,075,252$5,075,252 $25,000- $0--
2015 · Form 990PF period ending 2015-12-31 · view filing · original 990 ↗
$847,205$290,879 $5,123,491$5,123,491 -- $0--
2014 · Form 990PF period ending 2014-12-31 · view filing · original 990 ↗
$184,735$324,267 $4,567,165$4,567,165 -- $0--
2013 · Form 990PF period ending 2013-12-31 · view filing · original 990 ↗
$427,289$233,681 $4,706,697$4,706,697 -- $0--
2012 · Form 990PF period ending 2012-12-31 · view filing · original 990 ↗
$225,054$282,802 $4,513,089$4,513,089 -- $0--
2011 · Form 990PF period ending 2011-12-31 · view filing · original 990 ↗
$311,772$214,970 $4,570,837$4,570,837 -- $0--

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
TWIG FOUNDATIONNYT20 $144,291$2,840,304 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state, similar name
ACTUS FOUNDATIONNYT20 $135,146$107,068 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
MASKERADO FOUNDATIONNYT20 $139,097$1,080,160 PRESIDENT/DIRECTOR$0 Same NTEE code T20, revenue within 2x, same state
SATHI FOUNDATION INCNYT20 $142,288$478,204 OFFICER$0 Same NTEE code T20, revenue within 2x, same state
HAZON YESHAYA FOUNDATIONNYT20 $135,000$129,389 PRESIDENT$0 Same NTEE code T20, revenue within 2x, same state
AVEN SESHIYU FOUNDATIONNYT20 $140,128$27,010 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
GILLES AND DEBBIE FOUNDATIONNYT20 $145,188$228,376 PRESIDENT$0 Same NTEE code T20, revenue within 2x, same state
M & R SCHREIBER FOUNDATIONNYT20 $133,799$132,495 Director$0 Same NTEE code T20, revenue within 2x, same state
CASE FAMILY FOUNDATION TRNYT20 $130,481$84,289 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
M J SAAD FAMILY FOUNDATIONNYT20 $131,425$165,276 PRESIDENT$0 Same NTEE code T20, revenue within 2x, same state
S & R KLEIMAN FOUNDATION INCNYT20 $133,838$153,300 PRESIDENT/DIRECTOR$0 Same NTEE code T20, revenue within 2x, same state
POLLINGER FAMILY FOUNDATIONNYT20 $145,982$362,879 PRESIDENT AND TREASURER$0 Same NTEE code T20, revenue within 2x, same state
SHARMA FAMILY FOUNDATION INCNYT20 $138,698$57,328 DIRECTOR$0 Same NTEE code T20, revenue within 2x, same state
NON NOBIS SOLUM FOUNDATION INCNYT20 $132,678$191,487 PRESIDENT$0 Same NTEE code T20, revenue within 2x, same state
THE LOUIS FEINBERG FOUNDATIONNYT20 $135,978$80,000 Director$20,000 Same NTEE code T20, revenue within 2x, same state
JOHN F MAHER FAMILY FOUNDATIONNYT20 $134,513$63,294 PRESIDENT; CHIEF EXECUTIVE OFFICER$0 Same NTEE code T20, revenue within 2x, same state
HUNT CHARITABLE FOUNDATION INCNYT20 $135,084$146,119 PRESIDENT, DIRECTOR$0 Same NTEE code T20, revenue within 2x, same state
KATE J SOLOMON FAMILY FOUNDATIONNYT20 $133,508$212,866 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
MHM FAMILY CHARITABLE FOUNDATIONNYT20 $142,700$143,965 President$0 Same NTEE code T20, revenue within 2x, same state
OHEL RACHEL VE LEAH FOUNDATION INCNYT20 $136,794$138,093 DIRECTOR$0 Same NTEE code T20, revenue within 2x, same state
EILEEN & MURRAY FRIEDMAN FOUNDATIONNYT20 $139,274$144,520 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
LYDIA & ROB PETTY FAMILY FOUNDATIONNYT20 $129,395$153,101 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
LESTER AND GRACE MASLOW FOUNDATION INCNYT20 $136,290$146,387 TRUSTEE$10,000 Same NTEE code T20, revenue within 2x, same state
EILEEN LUDWIG GREENLAND FOUNDATIONNYT20 $146,002$113,383 TRUSTEE$0 Same NTEE code T20, revenue within 2x, same state
NIXON-MARINONI FAMILY FOUNDATION INCNYT20 $134,547$80,454 TRUSTEE$0 Same NTEE code T20, 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
THE COMMON SENSE FUND INC Private foundation$197,5004 12012–2015 OHEL RACHEL VE LEAH FOUNDATION INC
UNITED CHARITY FOUNDATION Private foundation$50,0002 12022–2024 HONG W MOY FOUNDATION
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$39,4856 12016–2024 KNOCK FOUNDATION INC
MARY DUKE BIDDLE FOUNDATION Private foundation$20,0001 12021–2021 CARIS FOUNDATION
FORGOOD INC DAF sponsor$18,7782 12013–2019 KNOCK FOUNDATION INC
MIGHTYCAUSE CHARITABLE FOUNDATION DAF sponsor$15,2552 12011–2013 KNOCK FOUNDATION INC
BANK OF AMERICA CHARITABLE FOUNDATION INC Private foundation$15,0006 12012–2017 KNOCK FOUNDATION INC
CALIFORNIA COMMUNITY FOUNDATION DAF sponsor$7,5001 12012–2012 KNOCK FOUNDATION INC
RECORDS-JOHNSTON FAMILY FOUNDATION INC Private foundation$4,0002 12023–2024 KNOCK FOUNDATION INC
THE BOB AND KAREN WORTHAM CHARITABLE FOU Private foundation$5001 12022–2022 PHC FOUNDATION
AMAZONSMILE FOUNDATION Private foundation$4073 12020–2023 KNOCK FOUNDATION INC
WAGNER FAMILY FOUNDATION INC Private foundation$2501 12023–2023 SUFFOLK COUNTY BAR ASSOCIATION CHARITY FOUNDATION
ELLIOTT AND RONNI ROBINSON CHARITABLE FOUNDATION Private foundation$641 12024–2024 WILLOW HILL 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 · $221,240 spent · pay $0 · grants $205,867 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $205,867 93.1%
Fees: other professional $9,332 4.2%
Fees: accounting $5,566 2.5%
Taxes $475 0.2%
Total$221,240100%

View the filing

2024 · Form 990PF · $244,238 spent · pay $0 · grants $224,303 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $224,303 91.8%
Fees: other professional $9,239 3.8%
Taxes $5,861 2.4%
Fees: accounting $4,835 2.0%
Total$244,238100%

View the filing

2023 · Form 990PF · $431,502 spent · pay $0 · grants $409,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $409,000 94.8%
Taxes $13,459 3.1%
Other expenses $7,788 1.8%
Fees: accounting $1,250 0.3%
Interest $5 0.0%
Total$431,502100%

View the filing

2022 · Form 990PF · $451,555 spent · pay $0 · grants $438,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $438,500 97.1%
Other expenses $6,829 1.5%
Fees: accounting $6,131 1.4%
Taxes $95 0.0%
Total$451,555100%

View the filing

2021 · Form 990PF · $330,025 spent · pay $0 · grants $313,800 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $313,800 95.1%
Other expenses $7,721 2.3%
Fees: accounting $4,836 1.5%
Taxes $3,668 1.1%
Total$330,025100%

View the filing

2020 · Form 990PF · $311,102 spent · pay $0 · grants $305,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $305,000 98.0%
Fees: accounting $4,684 1.5%
Taxes $1,418 0.5%
Total$311,102100%

View the filing

2019 · Form 990PF · $304,631 spent · pay $0 · grants $300,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $300,000 98.5%
Fees: accounting $4,631 1.5%
Total$304,631100%

View the filing

2018 · Form 990PF · $275,917 spent · pay $0 · grants $271,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $271,000 98.2%
Fees: accounting $4,917 1.8%
Total$275,917100%

View the filing

2017 · Form 990PF · $254,972 spent · pay $0 · grants $250,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $250,000 98.0%
Fees: accounting $4,972 2.0%
Total$254,972100%

View the filing

2016 · Form 990PF · $272,109 spent · pay $0 · grants $256,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $256,000 94.1%
Taxes $11,112 4.1%
Fees: accounting $4,997 1.8%
Total$272,109100%

View the filing

2015 · Form 990PF · $290,879 spent · pay $0 · grants $257,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $257,000 88.4%
Fees: other professional $28,718 9.9%
Fees: accounting $4,826 1.7%
Taxes $335 0.1%
Total$290,879100%

View the filing

2014 · Form 990PF · $324,267 spent · pay $0 · grants $249,430 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $249,430 76.9%
Fees: other professional $59,860 18.5%
Taxes $9,873 3.0%
Fees: accounting $5,104 1.6%
Total$324,267100%

View the filing

2013 · Form 990PF · $233,681 spent · pay $0 · grants $183,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $183,000 78.3%
Fees: other professional $48,185 20.6%
Fees: accounting $4,867 2.1%
Taxes $1,486 0.6%
Other expenses -$3,857 -1.7%
Total$233,681100%

View the filing

2012 · Form 990PF · $282,802 spent · pay $0 · grants $228,500 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $228,500 80.8%
Fees: other professional $40,765 14.4%
Other expenses $8,410 3.0%
Fees: accounting $4,650 1.6%
Taxes $477 0.2%
Total$282,802100%

View the filing

2011 · Form 990PF · $214,970 spent · pay $0 · grants $175,000 · events $0
LineAs describedTotalShare
Contributions, gifts, grants paid $175,000 81.4%
Taxes $25,186 11.7%
Fees: other professional $10,212 4.8%
Fees: accounting $4,572 2.1%
Total$214,970100%

View the filing