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Plinth

· Private foundation

Dryden Family Foundation Inc

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.

$98k
Granted FY2025still arriving
10
Grants FY2025still arriving
6
States reached
$50k
Largest
01What you fund
0190% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20182025.

Education$300kHealth$69kRecreation & Sports$16kReligion$15kPhilanthropy$12kEnvironment$12kFood & Nutrition$10kAnimals$8kOther$0
02FY2025 · 10 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k8 grants · $25k
  • $10k–50k1 grant · $23k
  • $50k–250k1 grant · $50k
$3,000
Median grant
6
States reached
$556k
Total assets
Largest grants
RecipientAmount
UMD ST JOSEPH MEDICAL CENTER FOUNDATION$50,000
CALVERT SCHOOL$23,000
ARTHRITIS FOUNDATION$9,100
THE ODYSSEY SCHOOL$3,500
PANZI FOUNDATION$3,000
Individual grant recipient$2,500
AMC TIGER CLUB ANNUAL MEMBERSHIP$2,250
CLIMB WYOMING$2,000
Individual grant recipient$1,500
WHALES OF GUERRERO$1,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY18–25, $10k) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 19% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 11%CLIMB WYOMING: $2k → 10%CLIMB WYOMING: $2k → 10%CLIMB WYOMING: $2k → 10%BALLET BRAZOS: $1k → 22%CLIMB WYOMING: $1k → 10%CLIMB WYOMING: $1k → 10%CLIMB WYOMING: $500 → 10%FAMILY ACCESS NETWORK: $200 → 10%FAMILY ACCESS NETWORK: $200 → 10%SOUTH TEXAS SUPPER CLUB INC: $1k → 22%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

NY
MA
OR
WY
CA
UT
MO
MD
TN
NC
DC
GA
TX

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

72%of every dollar goes to organizations you’ve funded before.
$357k · 24 repeat orgs$137k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +45% since the first grant, against +8% for the ones you funded once.

24 repeat relationships — 5 still active in FY2025, 19 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

24
28

Total granted

$357k
$72k

Median revenue growth · since first grant

+45%
+8%

Still filing today

71%
64%

New vs renewed · share of each year

In FY2025, 34% of grant dollars renewed an existing relationship; $65k went to new ones.

50%100%’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’18’19’20’21’22’23’24’25
EducationRecreation & SportsHuman ServicesHealthPhilanthropyHousing & ShelterOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.

Backed again, and grew

  • CS
    CALVERT SCHOOL INCORPORATED
    8× · 2018–2025 · $224k · revenue +69%
  • TO
    THE ODYSSEY SCHOOL INC
    5× · 2018–2025 · $27k · revenue +85%
  • GS
    GILMAN SCHOOL INCORPORATED
    6× · 2018–2024 · $11k · revenue +45%

Funded once

  • WI
    Washington International Horse Show
    one grant, 2018 · $10k · revenue +8%
  • G
    GILCHRIST
    one grant, 2022 · $10k
  • IC
    ISLAND CONSERVATIONgraduated
    one grant, 2021 · $10k · revenue +67%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Seattle Biomedical Research Institute

We conduct fundamental infectious disease research to generate critical new knowledge about pathogens and their interactions with see schedule o for continuationhumans to enable the discovery and development of novel interventions,…

2
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

3
South Shore Charter School

The mission of south shore charter school is to cultivate students the tenacity, integrity, and curiosity needed to become innovative and socially responsible leaders, ready to face and solve the ever-changing challenges facing our…

Education
4
The Philadelphia School

The philadelphia school educates children for a future that is impossible to know but not impossible to shape. learn here. go anywhere.

5
Silicon Schools Fund Inc

The mission of the silicon schools fund is to improve education through supporting the launch of excellent new schools, improving academic instruction in existing schools, and by funding some of the boldest innovations in education…

Education
6
Capitol Hill Day School

Capitol Hill Day School is a co-educational independent school serving students from pre-kindergarten through 8th grade. Capitol Hill Day School deeply engages a diverse community of students in connecting the classroom with the larger…

Education
7
United States Center for Safesport

With the goal of ensuring athletes within the u.s. olympic and paralympic movement of are safe, supported, and strengthened. the center: delivers comprehensive abuse prevention education within and outside of the u.s. olympic and…

Recreation & Sports
8
The Water Research Foundation

The purpose of the water research foundation (wrf) is a definitive research organization to advance the science of all things water to better meet the evolving needs of its subscribers and the water sector. to engage exclusively in…

Environment
9
The Rand Corporation

Help improve policy and decision making through research and analysis.

Public Benefit
10
Arab Gulf States Institute in Washington

Agsiw's central mission is to provide expert research and analysis of the social, economic, and political dimensions of the gulf arab states and how they impact how they impact u.s. and gulf domestic and foreign policy. to accomplish this…

International
11
Aquarium of the Pacific Corporation

The aquarium of the pacific's mission is to instill a sense of wonder, respect, and stewardship for the pacific ocean, its inhabitants, and ecosystems.

Animals
12
Conservation X Labs Inc

To improve the efficacy, speed, cost, sustainability, and scaling of conservation solutions through harnessing exponential technology, innovation, and entrepreneurship to prevent human-induced extinction.

Animals

For reference, the grantee most central to the portfolio’s shape is The Odyssey School Inc and the most unlike its peers is C3 Legacy Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyIndependent K-8 SchoolsCancer Support OrganizationsChristian Missionary Organi…Classical Music EnsemblesVeteran Support ServicesCommunity Health CentersAffordable Housing Developm…Youth Sports Booster Organi…Public School District Foun…Child and Family ServicesElementary Literacy TutoringYouth Development CentersAt-Risk Youth MentoringProfessional Ballet Compani…Community Arts OrganizationsFood Pantries & AssistanceUrban Agriculture & Food Ac…Land Conservation Organizat…Animal Rescue and Adoption
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 32 years old; the field is 14. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number22%0%<5yr16%8%5–10yr19%16%10–20yr16%32%20–35yr11%24%35–55yr16%19%55yr+
THE FIELDby orgYOUR MONEYby value22%0%<5yr16%2%5–10yr19%4%10–20yr16%17%20–35yr11%10%35–55yr16%67%55yr+

The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 14% of the field you don’t fund.

orgs you fund
0.0%0/40
the rest of the field
14%
5,903/41,809

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

39 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 39 of the 57 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

0
Load-bearing (≥25% of a budget)
9
Early backer (in before they grew)
38/39
Grantees still filing
25/39
Grew since you first funded

Where your money sits — by cause, then by grantee

CALVERT SCHOOL INCORPORATED — $224,440 · EducationCALVERT SCHOOL INCORPORATEDTHE ODYSSEY SCHOOL INC — $26,500 · EducationTHE ODYSSEY SCHOOL INCGILMAN SCHOOL INCORPORATED — $10,500 · Education+5 more — $7,000 · EducationUMD ST JOSEPH MEDICAL CENTER FOUNDATION — $50,000 · OtherUMD ST JOSEPH MEDICAL CENTER FOUNDAT…Individual grant recipient — $17,375 · OtherIndividual grant recipientALLEN ACADEMY — $11,500 · OtherALLEN ACADEMYGILCHRIST — $10,000 · OtherGILCHRISTLIVING CLASSROOMS FOUNDATIONS — $10,000 · OtherLIVING CLASSROOMS FOUNDATIONSUNITED WAY OF CENTRAL OREGAN — $6,000 · OtherCENTRAL OREGON LOCAVORE — $6,000 · Other+25 more — $49,425 · Other+25 moreARTHRITIS FOUNDATION INC — $9,100 · HealthAmerican Heart Association Inc — $6,000 · HealthMt Washington Pediatric Hospital Inc — $2,000 · Health+1 more — $500 · HealthWashington International Horse Show — $10,000 · Recreation & SportsCST BASEBALL INC — $1,860 · Recreation & SportsTEMPLE GWATHMEY STEEPLECHASE FOUNDATION INC — $1,000 · Recreation & SportsNATIONAL ABILITY CENTER — $500 · Recreation & SportsC3 LEGACY FOUNDATION — $6,400 · PhilanthropyOPENCOLLECTIVE FOUNDATION — $5,000 · PhilanthropyRonny Maher Memorial Inc — $500 · PhilanthropyISLAND CONSERVATION — $10,000 · EnvironmentTHE MANOR CONSERVANCY INC — $1,500 · EnvironmentCLIMB DBA CLIMB WYOMING — $8,000 · Human ServicesBALLET BRAZOS — $1,000 · Human ServicesSOUTH TEXAS SUPPER CLUB INC — $1,000 · Human ServicesFamily Access Network Foundation — $400 · Human Services
Education$268,440Other$160,300Health$17,600Recreation & Sports$13,360Philanthropy$11,900Environment$11,500Human Services$10,400

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetCALVERT SCHOOL INCORPORATED — $224,440 over 8y, 0.2% of budgetTHE ODYSSEY SCHOOL INC — $26,500 over 5y, 0.2% of budgetGILMAN SCHOOL INCORPORATED — $10,500 over 6y, 0.0% of budgetWashington International Horse Show — $10,000 over 1y, 0.3% of budgetISLAND CONSERVATION — $10,000 over 1y, 0.1% of budgetCLIMB DBA CLIMB WYOMING — $8,000 over 6y, 0.0% of budgetC3 LEGACY FOUNDATION — $6,400 over 2y, 1.1% of budgetAmerican Heart Association Inc — $6,000 over 2y, 0.0% of budgetCENTRAL OREGON LOCAVORE — $6,000 over 4y, 0.1% of budgetOPENCOLLECTIVE FOUNDATION — $5,000 over 1y, 0.0% of budgetBALTIMORE SYMPHONY ORCHESTRA INC — $2,500 over 1y, 0.0% of budgetMARYLAND HORSE FOUNDATION INC — $2,500 over 1y, 0.2% of budgetSTEPHEN SILLER TUNNEL TO TOWERS FOUNDATION — $2,500 over 1y, 0.0% of budgetGARRISON FOREST SCHOOL INC — $2,000 over 4y, 0.0% of budgetTHE GIVING PLATE — $2,000 over 2y, 0.0% of budgetBETHLEHEM INN — $2,000 over 2y, 0.0% of budgetMt Washington Pediatric Hospital Inc — $2,000 over 1y, 0.0% of budgetSHEPHERD'S HOUSE MINISTRIES — $2,000 over 2y, 0.0% of budgetCST BASEBALL INC — $1,860 over 1y, 0.0% of budgetSHARE OUR STRENGTH — $1,500 over 2y, 0.0% of budgetCollege Station ISD Education Foundation Inc — $1,500 over 2y, 0.1% of budgetTHE MANOR CONSERVANCY INC — $1,500 over 4y, 0.5% of budgetBend-Redmond Habitat for Humanity — $1,000 over 1y, 0.0% of budgetBALLET BRAZOS — $1,000 over 1y, 0.5% of budgetWHALES OF GUERRERO — $1,000 over 1y, 0.6% of budgetJackson Hole Childrens Museum Inc — $1,000 over 2y, 0.1% of budgetTEMPLE GWATHMEY STEEPLECHASE FOUNDATION INC — $1,000 over 1y, 0.4% of budgetTHE NATIONAL MENTORING PARTNERSHIP INC — $1,000 over 3y, 0.0% of budgetSOUTH TEXAS SUPPER CLUB INC — $1,000 over 1y, 1.8% of budgetSPARROW CLUBS USA — $500 over 1y, 0.1% of budgetSPORTS BOOSTERS OF MARYLAND INC — $500 over 1y, 4.0% of budgetNATIONAL ABILITY CENTER — $500 over 1y, 0.0% of budgetROLAND PARK COUNTRY SCHOOL INC — $500 over 1y, 0.0% of budgetDYSLEXIA TUTORING PROGRAM — $500 over 1y, 0.1% of budgetRonny Maher Memorial Inc — $500 over 1y, 8.9% of budgetTHE V FOUNDATION — $500 over 1y, 0.0% of budgetFamily Access Network Foundation — $400 over 2y, 0.0% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

Baltimore Community Foundation IncMD18.8× affinity7 shared granteesties to 9 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Baltimore Community Foundation Inc · The Marion I & Henry J Knott Foundation Inc · Maybelle Clark Macdonald Fund · France-Merrick Foundation Inc · First Interstate BancSystem Foundation Inc · The Oregon Community Foundation · The Thomas B and Elizabeth M Sheridan Foundation Inc · Batza Family Foundation Inc · Middendorf Foundation Inc · W P Carey Foundation Inc · The Anjulicia Foundation · The Bessemer Giving Fund

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization Dryden Family Foundation Inc funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
202122232425
no gov · 110%0%1%3%5%your share of their income ↑0%25%50%75%100%share of the org’s income from governmentmedian 11%
  • Bend-Redmond Habitat for Humanity17% of income from government
  • Baltimore Symphony Orchestra Inc11% of income from government
  • Bethlehem Inn0% of income from government
  • Mt Washington Pediatric Hospital Inc0% of income from government
no gov moneyreceives it· size = income
11get no government money at all
10report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
typical government reliance, FY2025

Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 57 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

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

Source object · view filing

More from the funding graph