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Texas · Private foundation

Otter Island Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$191k
Granted FY2025(still arriving)
86
Grants FY2025
80
Organizations funded FY2024
14%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$1,000
Largest grant, FY2025
$27,000
Organizations funded a year
80 to 100
FY2018 to FY2024
States reached, FY2025
21
Total assets, FY2025
$2.9M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 14% of the organizations Otter Island Foundation funded were first-time grantees, receiving 7% of its grant dollars.

New vs renewed · share of each year

In FY2024, 93% of grant dollars renewed an existing relationship; $13k went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23’24
EducationArts & CultureHealthHuman ServicesCivil RightsPhilanthropyOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving84$189k12%
FY202480$177k14%
FY202399$194k14%
FY2022100$193k18%
FY202194$177k16%
FY202098$180k19%
FY201989$171k24%
FY201887$186k18%
98% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Arts & Culture$457kEducation$374kHealth$141kEnvironment$130kReligion$59kPhilanthropy$58kHuman Services$44kCivil Rights$39kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

ME
NH
IL
NY
MA
OR
IA
IN
OH
CT
RI
CA
UT
CO
VA
AZ
TN
NC
DC
LA
AL
GA
TX

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 159 grantees
All grantees of Otter Island Foundation by total granted
GranteeTotal grantedYearsShare of their budget
The William a Farnsworth Library and Art Museum Inc$138,76181%
Island Institute$107,11190%
Connecticut College$74,00090%
Children's Museum Inc$70,42490%
National Trust for Historic Preservation in the United States$55,00030%
Friends of the Strand Theatre Inc$45,06681%
San Francisco Day School$35,50080%
Poe Elementary School PTO$32,50072%
Rockport Library Foundation$30,94732%
Annunciation Orthodox School$30,0009n/a
Planned Parenthood Federation of America Inc$27,07750%
Duke University$23,50090%
Penobscot Bay YMCA$22,45890%
Alzheimer's Disease Research Foundation$22,40090%
American Civil Liberties Union Foundation Inc$21,90090%
United Midcoast Charities Inc$21,51391%
Alley Theatre$21,50090%
Everytown for Gun Safety Support Fund Inc$21,00050%
Hermann Park Conservancy$20,94090%
Groton School$20,00090%
The Girls Foundation of Tanzania$16,40081%
Calvary Presbyterian Church$15,5006n/a
The Methodist Hospital Foundation$13,75060%
Voteorg$13,00060%
St George's School$13,00090%
Glide Foundation$12,80050%
Pomfret School Incorporated$10,50090%
Teach for America Inc$10,40530%
The General Henry Knox Museum$10,01161%
Equal Justice Initiative$10,00060%
New England Historic Genealogical Society$10,00020%
Camden Conference$9,01351%
Vanderbilt University$9,00090%
The Colorado College$9,00090%
Center for Contemporary Art$9,00090%
North Bridge Academy$9,00020%
Maine Coast Heritage Trust$9,00090%
Texas Christian University$9,00090%
Maysles Institute Inc$8,50090%
United Way of Greater Houston$8,00030%
Houston Public Media Foundation$8,00070%
Menil Foundation Inc$7,85030%
The Museum of Fine Arts Houston$7,50030%
The Uva School of Education and Human Development Foundation Inc$7,50080%
The Boulder Jewish Community Center$7,47560%
Primary Children's Cancer$7,0003n/a
Alzheimer's Foundation of America Inc$7,00040%
Astrodome Conservancy$6,25052%
Texas Children's Hospital$6,15060%
San Francisco Food Bank$6,05060%
The Aspen Institute Inc$6,00060%
Stratford Hall$6,00020%
Memorial Sloan-Kettering Cancer Center$5,82050%
Young Audiences Inc of Houston$5,7003n/a
Coastal Mountains Land Trust$5,50090%
Buffalo Bayou Partnership Inc$5,50070%
William Marsh Rice University$5,50020%
First Congregational Church$5,5003n/a
Feeding America$5,25030%
Impact on Education Inc$5,25060%
Junkyard Social Club$5,25021%
Friends of Fleming Park$5,2008n/a
St Anthony Foundation$5,1425n/a
Depelchin Children's Center$5,00010%
1st Congregational Society in Gilmanton$5,0001n/a
Watermans Community Center$5,00080%
The Trustees of the Smith College$5,00040%
Episcopal High School$4,5005n/a
Bay Chamber Concerts Inc$4,50090%
Kqed Inc$4,21050%
Kids' Meals Inc$4,00020%
Star of Hope Mission$4,00070%
The Tanzanian Childrens Fund Inc$3,80080%
Maine Seacoast Mission$3,50090%
Epilepsy Foundation of Texas$3,40040%
La Casa de las Madres$3,25050%
Children's Hospital Colorado Foundation$3,25050%
Vinalhaven Land Trust Inc$3,25080%
The Barack Obama Foundation$3,00020%
Mothers Against Media Addiction$3,00020%
Sls Preschool$3,00010%
Friends of Arches&Canyonlands Parks Bates Wilson Legacy Fund$2,85070%
There With Care$2,75050%
The Center for Reproductive Rights Inc$2,50010%
Feeding Texas$2,50010%
United States Fund for Unicef$2,50010%
The Houston Food Bank$2,50010%
Project Hope - the People-To-People Health Foundation Inc$2,50010%
New York Yacht Club Foundation$2,50060%
Reproductive Freedom for All Foundation$2,50010%
Yellowstone Academy Inc Dba Yellowstone Schools$2,50050%
Maine Historical Society$2,25050%
The Owls Head Transportation Museum$2,25040%
The Max Warburg Courage Curriculum Inc$2,25090%
Bo's Place$2,10040%
Planned Parenthood Gulf Coast Inc$2,00010%
International Rett Syndrome Foundation$2,00020%
St John's School$2,00040%
Operation Smile Inc$2,00030%
St Paul's School$2,00010%
Friends and Foundation of the San Francisco Public Library$1,90030%
Canterbury Shaker Village Inc$1,75050%
Society for the Preservation of New Engl$1,70050%
Community Food Share Inc$1,50030%
Beyond Bedtime Inc$1,50030%
Boulder Public Library Foundation$1,50050%
Boulder Historical Society Inc$1,50050%
Gulf of Maine Research Institute$1,50020%
Lawndale Art & Performance Center$1,50010%
Friends of Boulder Community School of Integrated$1,50021%
Wow Children's Museum World of Wonder$1,50050%
Rotary Club of Lawndale Inc$1,50014%
American National Red Cross & Its Constituent Chapters and Branches$1,50020%
Boulder Ballet$1,50020%
Common Sense Media$1,50020%
Pizza to the Polls$1,25020%
The Heritage Society$1,25040%
Trustees of Boston University$1,25030%
Share Our Strength$1,00010%
Boys and Girls Clubs of Greater Houston Inc$1,00020%
North Haven Foundation$1,0001n/a
Boulder Philharmonic Orchestra$1,00020%
San Francisco Parks Alliance$1,00010%
North Haven Sustainable Housing$1,00020%
San Francisco CASA$1,00020%
University of California San Francisco Foundation$1,00010%
Homeworthy$1,00020%
Tenth Mountain Division Hut Assn Inc 10th Mountain$1,00020%
Herring Gut Learning Center$1,00020%
Homeboy Industries$1,00010%
Aos Foundation$1,0001n/a
Vesterheim Norwegian-American Museum$95050%
American Camping Association Inc$90020%
The Hurricane Island Foundation$80050%
Broadreach Family & Community Services$75020%
Eat Real Certified Inc$75020%
Houston's Amazing Place Inc$75010%
Association of Small Foundations$75010%
Colorado Uplift Inc$75020%
Ronald McDonald House Charities Greater Houston Inc$59020%
Colorado Healing Fund$50010%
Huntsman Cancer Foundation$50010%
Nehemiah Center Inc$50020%
Homeless Prenatal Program Inc$50010%
We Win Institute Inc$5001n/a
Breakthrough T1d$50010%
Houston Parks Board$50010%
The National World War II Museum Inc$50020%
Camp For All Foundation$50010%
Barbara Bush Houston Literacy Foundation$45020%
Feeding Colorado$45010%
Family House Inc$40930%
Emergency Family Assistance Association$29810%
Share-A-Gift$2582n/a
Hamilton Families$15010%
Friends of Colonial Pemaquid$1501n/a
Frank R Williams Scholarship Fund Inc$10811%
Episcopal Community Services$10010%
North Haven Conservation Partners$1002n/a

What it could do for these grantees

Plus 54 recipients with no EIN on record ($271k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Otter Island Foundation supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetThe William a Farnsworth Library and Art Museum Inc: $138,761 over 8y, 0.6% of budgetIsland Institute: $107,111 over 9y, 0.2% of budgetConnecticut College: $74,000 over 9y, 0.0% of budgetChildren's Museum Inc: $70,424 over 9y, 0.2% of budgetNational Trust for Historic Preservation in the United States: $55,000 over 3y, 0.0% of budgetFriends of the Strand Theatre Inc: $45,066 over 8y, 1.4% of budgetSan Francisco Day School: $35,500 over 8y, 0.0% of budgetPoe Elementary School PTO: $32,500 over 7y, 2.1% of budgetRockport Library Foundation: $30,947 over 3y, 1.7% of budgetPlanned Parenthood Federation of America Inc: $27,077 over 5y, 0.0% of budgetDuke University: $23,500 over 9y, 0.0% of budgetPenobscot Bay YMCA: $22,458 over 9y, 0.2% of budgetAlzheimer's Disease Research Foundation: $22,400 over 9y, 0.0% of budgetAmerican Civil Liberties Union Foundation Inc: $21,900 over 9y, 0.0% of budgetUnited Midcoast Charities Inc: $21,513 over 9y, 0.6% of budgetAlley Theatre: $21,500 over 9y, 0.0% of budgetEverytown for Gun Safety Support Fund Inc: $21,000 over 5y, 0.0% of budgetHermann Park Conservancy: $20,940 over 9y, 0.0% of budgetGroton School: $20,000 over 9y, 0.0% of budgetThe Girls Foundation of Tanzania: $16,400 over 8y, 1.3% of budgetThe Methodist Hospital Foundation: $13,750 over 6y, 0.0% of budgetVoteorg: $13,000 over 6y, 0.4% of budgetSt George's School: $13,000 over 9y, 0.0% of budgetGlide Foundation: $12,800 over 5y, 0.0% of budgetPomfret School Incorporated: $10,500 over 9y, 0.0% of budgetTeach for America Inc: $10,405 over 3y, 0.0% of budgetThe General Henry Knox Museum: $10,011 over 6y, 0.5% of budgetEqual Justice Initiative: $10,000 over 6y, 0.0% of budgetNew England Historic Genealogical Society: $10,000 over 2y, 0.0% of budgetCamden Conference: $9,013 over 5y, 1.1% of budgetVanderbilt University: $9,000 over 9y, 0.0% of budgetThe Colorado College: $9,000 over 9y, 0.0% of budgetCenter for Contemporary Art: $9,000 over 9y, 0.1% of budgetNorth Bridge Academy: $9,000 over 2y, 0.1% of budgetMaine Coast Heritage Trust: $9,000 over 9y, 0.0% of budgetTexas Christian University: $9,000 over 9y, 0.0% of budgetMaysles Institute Inc: $8,500 over 9y, 0.2% of budgetUnited Way of Greater Houston: $8,000 over 3y, 0.0% of budgetHouston Public Media Foundation: $8,000 over 7y, 0.0% of budgetMenil Foundation Inc: $7,850 over 3y, 0.0% of budgetThe Museum of Fine Arts Houston: $7,500 over 3y, 0.0% of budgetThe Uva School of Education and Human Development Foundation Inc: $7,500 over 8y, 0.1% of budgetThe Boulder Jewish Community Center: $7,475 over 6y, 0.0% of budgetAlzheimer's Foundation of America Inc: $7,000 over 4y, 0.0% of budgetAstrodome Conservancy: $6,250 over 5y, 2.4% of budgetTexas Children's Hospital: $6,150 over 6y, 0.0% of budgetSan Francisco Food Bank: $6,050 over 6y, 0.0% of budgetThe Aspen Institute Inc: $6,000 over 6y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 144.

Nonprofits that may fit its grantmaking

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Maine Community Foundation IncME30.8× affinity17 shared granteesties to 10 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Maine Community Foundation Inc · Fisher Charitable Foundation · Tr Ua the Camden Foundation · Middlecott Foundation · Davis Family Foundation · The Bertuzzi Family Foundation · Community Foundation Boulder County · Onion Foundation · Albert & Ethel Herzstein Charitable Foundation · Angel Foundation · Morton-Kelly Charitable Trust · Strake Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Otter Island Foundation with peer funders

About Otter Island Foundation

How much does Otter Island Foundation give?
Otter Island Foundation reported 86 grants totaling $191,400 in its FY2025 IRS filing. It funded between 80 and 100 organizations a year over FY2018 to FY2024.
What does Otter Island Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Arts & Culture (31%), Education (25%), Health (10%).
Who are Otter Island Foundation's largest grantees?
By total granted over FY2017 to FY2025: The William a Farnsworth Library and Art Museum Inc ($139k), Island Institute ($107k), Connecticut College ($74k).
Does Otter Island Foundation fund new organizations?
In FY2024, 14% of the organizations it funded were first-time grantees.
Does Otter Island Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Otter Island Foundation?
Its strongest co-funders, measured against what their size predicts, include Maine Community Foundation Inc, Fisher Charitable Foundation, Tr Ua the Camden Foundation.
Where is Otter Island Foundation based?
Otter Island Foundation is based in TX.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 219 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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