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· Public charity

Donald B Tanklage and Carole F Tanklage Foundation

The donald b.

$490k
Granted FY2019
28
Grants FY2019
2
States reached
$50k
Largest
01What you fundRead
02The needRead
03Your edgeRead
04Your fieldRead
05Through PlinthRead

Read this first · the figures below need context

93% of Donald B Tanklage and Carole F Tanklage Foundation’s FY2020 grant dollars went to Marin Community Foundation, not to grantees.

Its money now reaches organizations through that sponsor, which does not report who recommended each grant. FY2020 names 28 organizations directly, so a portfolio cannot be read from it. Everything below is therefore FY2019, the last year Donald B Tanklage and Carole F Tanklage Foundation named its own grantees at scale: 28 organizations, $468k. It is dated, not current.

Organizations named directly on the return

5
’17
22
’18
28
’19
28
’20

Amber years are those where most dollars went to a sponsor.

01What you fund
0197% classified

What you funded, over time

Every grant clustered by its grantee’s IRS cause code (NTEE), by year — across FY2017–2020.

Philanthropy$7.8MAnimals$510kHuman Services$157kEducation$80kHealth$75kInternational$50kRecreation & Sports$48kPublic Benefit$40kEnvironment$35kOther$324k
02FY2019 · 28 grants

Where the money goes

Your grants by size, and where they go.

The 28 grants below total $467,500 — the rows itemised in this filing. The $490,000 headline is the total grant expense reported on the return, so the remaining $22,500 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.

By grant size · FY2019

  • $10k–50k27 grants · $418k
  • $50k–250k1 grant · $50k
$15,000
Median grant
2
States reached
$0
Total assets
Largest grants
RecipientAmount
BEST FRIENDS ANIMAL SOCIETY$50,000
UNITED STATES FRIENDS OF THE DAVID SHELDRICK WILDLIFE TRUST INC$35,000
AMERICAN NATIONAL RED CROSS$25,000
THE SALVATION ARMY - GOLDEN STATE DIVISION$25,000
BEYOND BARRIERS ATHLETIC FOUNDATION$22,500
KAINOS HOME AND TRAINING CENTER FOR THE DEVELOPMENTALLY DISABLED$20,000
KIM'S HORSE AND KID CONNECTION SCHOLARSHIP FUND AT FRANKLIN CANYO$20,000
ABILITIES UNITED$20,000
BORDER COLLIE RESCUE OF NORTHERN CALIFORNIA INC$20,000
SWEETBEAU HORSES$20,000
COASTSIDE OPPORTUNITY CENTER$17,500
GREATER FARALLONES ASSOCIATION$15,000
PAWS FOR PURPLE HEARTS$15,000
UNITED STATES CATHOLIC CONFERENCE$15,000
PENINSULA VOLUNTEERS INC$15,000
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 (FY18–20, $157k) land where the poverty rate runs at 8%, against an area that typically sits at 10%. 24% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.

area typical 10%AMERICAN NATIONAL RED CROSS: $25k → 10%AMERICAN NATIONAL RED CROSS: $5k → 14%WWP INC: $7k → 14%PENINSULA VOLUNTEERS INC: $15k → 7%ABILITIES UNITED: $20k → 8%COASTSIDE OPPORTUNITY CENTER: $30k → 7%COASTSIDE OPPORTUNITY CENTER: $18k → 7%COASTSIDE OPPORTUNITY CENTER: $18k → 7%KAINOS HOME AND TRAINING CENTER FOR THE DEVELOPMENTALLY DISABLED: $20k → 7%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

ME
NY
CA
UT
MD
KS
TN
DC
FL

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.

64%of every dollar goes to organizations you’ve funded before.
$884k · 21 repeat orgs$492k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +65% since the first grant, against +46% for the ones you funded once.

21 repeat relationships — 18 still active in FY2019, 3 since wound down; 20 grantees were first funded in FY2019 (too recent to call). Read against FY2019, the last year this funder named its own grantees directly; its giving has since run through a sponsor, which reports no donor behind each grant.

How the two cohorts compare

Re-uppedFunded once

Organizations

21
7

Total granted

$884k
$52k

Median revenue growth · since first grant

+65%
+46%

Still filing today

86%
100%

New vs renewed · share of each year

In FY2020, 57% of grant dollars renewed an existing relationship; $275k went to new ones.

50%100%’17’18’19’20
RenewedFirst-time

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

’17’18’19’20
AnimalsHuman ServicesHealthEducationPhilanthropyArts & CultureOther

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

  • TW
    THRIVE WITH HORSES
    4× · 2017–2020 · $80k · revenue +93% · 57% of their budget
  • PA
    PERFORMING ANIMAL WELFARE SOCIETY
    4× · 2017–2020 · $70k · revenue +118%
  • CH
    COASTSIDE HOPE
    3× · 2018–2020 · $65k · revenue +426%

Funded once

  • LR
    LYMPHOMA RESEARCH FOUNDATIONgraduated
    one grant, 2018 · $10k · revenue +42%
  • NM
    NOTABLE MUSIC AND ARTS ORGANIZATIONgraduated
    one grant, 2018 · $10k · revenue +29%
  • MP
    MOUNTED PATROL OF SAN MATEO COUNTY FOUNDATIONgraduated
    one grant, 2018 · $10k · revenue +409% · 32% of their budget

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
Marin Humane Society

Marin humane transforms lives through exceptional animal care, humane education, and advocacy. every day, marin humane inspires compassion and positive relationships between people and animals.

Animals
2
Society for the Prevention of Cruelty to Animals for Monterey County

The SPCA Monterey County's Mission is assuring compassionate treatment of all animals through rescue, rehabilitation, protection and education. The SPCA shelters homeless, neglected, and abused pets, including dogs, cats, horses, exotic…

Animals
3
Monterey Bay Aquarium Research Institute
—
4
Pet Orphans of Southern California

In addition to rescue and adoption, pet orphans provides a wide range of services including education, medical/financial, spay/neuter, and training assistance.

Animals
5
Rancho Coastal Humane Society

See schedule orancho coastal is dedicated to the rescue and shelter of abandoned companion animals. it encourages adoptions into loving homes and provides educational and community outreach programs designed to enhance the human-animal…

Animals
6
The California Wildlife Center

The california wildlife center (cwc) takes responsibility for the protection of all native wildlife through rehabilitiation, education and conservation. as the los angeles area's premier wildlife medical care and rehabilitation facility,…

Health
7
World Vets

To improve the health & well-being of animals through veterinary aid, response, training, research & local capacity building worldwide. We provide services to companion animals, horses, street dogs, livestock and marine animals including…

Animals
8
Santa Barbara Humane Society for the Prevention of Cruelty to Animals

Santa barbara humane operates two campuses located in santa barbara and santa maria providing care for community-owned and homeless animals. both campuses offer affordable high quality veterinary care, compassionate behavior training…

Animals
9
San Francisco Bay Bird Observatory

The San Francisco Bay Bird Observatory is dedicated to the conservation of birds and their habitats through science and outreach.

Environment
10
Marine Megafauna Foundation

Save threatened marine life using pioneering research, education, and sustainable conservation solutions

International
11
Sustainable Conservation

Sustainable Conservation advances the collaborative stewardship of Californias land, air, and water for the benefit of nature and people. For over three decades, Sustainable Conservation has built coalitions of people with different…

Environment
12
The Ocean Foundation

As the only community foundation for the ocean, The Ocean Foundation's 501(c)(3) mission is to improve global ocean health, climate resilience, and the blue economy. We create partnerships to connect people in the communities in which we…

Environment

For reference, the grantee most central to the portfolio’s shape is Marin Community Foundation and the most unlike its peers is Ocean Voyages Institute. 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 backsteadyFamily Philanthropic Founda…Youth Sports & Activities S…Labor Unions and Worker Adv…Animal Rescue and WelfareEnvironmental Conservation …
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 28 years old; the field is 14. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number24%2%<5yr15%6%5–10yr20%18%10–20yr17%38%20–35yr11%20%35–55yr13%16%55yr+
THE FIELDby orgYOUR MONEYby value24%0%<5yr15%1%5–10yr20%4%10–20yr17%5%20–35yr11%88%35–55yr13%2%55yr+

The field is 24% startups (under 5 years old) — 2% 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%0/52
the rest of the field
14%
26,003/186,926

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

49 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 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 49 of the 51 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.

3
Load-bearing (≥25% of a budget)
16
Early backer (in before they grew)
49/49
Grantees still filing
41/49
Grew since you first funded

Where your money sits — by cause, then by grantee

MARIN COMMUNITY FOUNDATION — $7,779,318 · PhilanthropyMARIN COMMUNITY FOUNDATION+5 more — $67,000 · PhilanthropyTHRIVE WITH HORSES — $80,000 · AnimalsPERFORMING ANIMAL WELFARE SOCIETY — $70,000 · AnimalsTHE DAVID SHELDRICK WILDLIFE TRUST USA INC — $57,500 · AnimalsSWEETBEAU HORSES — $55,000 · AnimalsBEST FRIENDS ANIMAL SOCIETY — $50,000 · AnimalsGREATER FARALLONES ASSOCIATION — $47,500 · AnimalsMGVP INC Mountain Gorilla Veterinary Project — $45,000 · AnimalsROCKETDOGRESCUE — $40,000 · AnimalsHumane World for Animals Inc — $20,000 · Animals+5 more — $45,000 · AnimalsBORDER COLLIE RESCUE OF NORTHERN CALIFORNIA INC — $70,000 · OtherTHE SALVATION ARMY — $50,000 · OtherOcean Voyages Institute — $45,000 · OtherST ANTHONY OF PADUA CHURCH — $33,000 · OtherSTOCKTON POLICE OFFICERS BENEFIT ASSOCIATION — $20,000 · OtherLIVING FREE NON-PROFIT ANIMAL SANCTUARY — $20,000 · OtherBEYOND BARRIERS ATHLETIC FOUNDATION — $47,500 · OtherPAWS FOR PURPLE HEARTS — $40,000 · OtherAmazon Watch Inc — $35,000 · OtherPUENTE DE LA COSTA SUR — $25,000 · OtherGLIDE FOUNDATION — $26,000 · OtherBOYS & GIRLS CLUB OF THE COASTSIDE — $25,000 · Other+1 more — $10,000 · OtherCOASTSIDE HOPE — $65,000 · Human ServicesAmerican National Red Cross & Its Constituent Chapters and Branches — $30,000 · Human ServicesKainos Home and Training Center for the Developmentally Disabled — $20,000 · Human ServicesABILITYPATH HOUSING — $20,000 · Human ServicesPENINSULA VOLUNTEERS INC — $15,000 · Human ServicesWOUNDED WARRIOR PROJECT INC — $7,000 · Human ServicesCALIFORNIA STATE UNIVERSITY FRESNO FOUNDATION — $35,000 · EducationPeralta Colleges Foundation — $15,000 · EducationThe Peninsula College Fund — $10,000 · EducationCALIFORNIA FAMILY FOUNDATION — $10,000 · EducationACCESS MAMMOTH — $10,000 · EducationSQUARE PEG FOUNDATION — $20,000 · HealthK9s ON THE FRONT LINE — $20,000 · HealthWAR HORSES FOR VETERANS INC — $15,000 · HealthHEALTHCARE FOUNDATION NORTHERN SONOMA COUNTY — $10,000 · HealthLYMPHOMA RESEARCH FOUNDATION — $10,000 · HealthDIRECT RELIEF — $45,000 · InternationalMEDECINS SANS FRONTIERES USA INC — $5,000 · International
Philanthropy$7,846,318Animals$510,000Other$446,500Human Services$157,000Education$80,000Health$75,000International$50,000

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 budgetMARIN COMMUNITY FOUNDATION — $7,779,318 over 1y, 3.3% of budgetTHRIVE WITH HORSES — $80,000 over 4y, 57% of budgetPERFORMING ANIMAL WELFARE SOCIETY — $70,000 over 4y, 0.5% of budgetCOASTSIDE HOPE — $65,000 over 3y, 1.5% of budgetTHE DAVID SHELDRICK WILDLIFE TRUST USA INC — $57,500 over 2y, 0.6% of budgetSWEETBEAU HORSES — $55,000 over 3y, 6.1% of budgetBEST FRIENDS ANIMAL SOCIETY — $50,000 over 1y, 0.1% of budgetBEYOND BARRIERS ATHLETIC FOUNDATION — $47,500 over 2y, 17% of budgetGREATER FARALLONES ASSOCIATION — $47,500 over 4y, 1.0% of budgetDIRECT RELIEF — $45,000 over 1y, 0.0% of budgetOcean Voyages Institute — $45,000 over 1y, 8.4% of budgetMGVP INC Mountain Gorilla Veterinary Project — $45,000 over 1y, 2.6% of budgetPAWS FOR PURPLE HEARTS — $40,000 over 2y, 0.4% of budgetROCKETDOGRESCUE — $40,000 over 3y, 1.8% of budgetFOUNDATION FOR STUDENTS RISING ABOVE — $37,000 over 3y, 0.3% of budgetAmazon Watch Inc — $35,000 over 1y, 0.3% of budgetCALIFORNIA STATE UNIVERSITY FRESNO FOUNDATION — $35,000 over 2y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches — $30,000 over 2y, 0.0% of budgetBOYS & GIRLS CLUB OF THE COASTSIDE — $25,000 over 1y, 3.3% of budgetPUENTE DE LA COSTA SUR — $25,000 over 2y, 0.3% of budgetSTOCKTON POLICE OFFICERS BENEFIT ASSOCIATION — $20,000 over 1y, 31% of budgetKainos Home and Training Center for the Developmentally Disabled — $20,000 over 1y, 0.3% of budgetLIVING FREE NON-PROFIT ANIMAL SANCTUARY — $20,000 over 2y, 0.6% of budgetHumane World for Animals Inc — $20,000 over 2y, 0.0% of budgetK9s ON THE FRONT LINE — $20,000 over 1y, 21% of budgetPeralta Colleges Foundation — $15,000 over 2y, 0.9% of budgetShepherds Green Sanctuary — $15,000 over 1y, 11% of budgetWAR HORSES FOR VETERANS INC — $15,000 over 1y, 1.6% of budgetPENINSULA VOLUNTEERS INC — $15,000 over 1y, 0.3% of budgetTHE MARINE MAMMAL CENTER — $10,000 over 1y, 0.1% of budgetLYMPHOMA RESEARCH FOUNDATION — $10,000 over 1y, 0.1% of budgetThe Peninsula College Fund — $10,000 over 1y, 1.0% of budgetMOUNTED PATROL OF SAN MATEO COUNTY FOUNDATION — $10,000 over 1y, 32% of budgetACCESS MAMMOTH — $10,000 over 1y, 0.2% of budgetTHE HAWN FOUNDATION — $10,000 over 1y, 1.3% of budgetNine Lives Foundation — $10,000 over 1y, 0.8% of budgetWOUNDED WARRIOR PROJECT INC — $7,000 over 1y, 0.0% of budgetMEDECINS SANS FRONTIERES USA INC — $5,000 over 1y, 0.0% of budgetFARM SANCTUARY INC — $5,000 over 1y, 0.0% of budgetCOMMUNITY FOUNDATION OF MENDOCINO COUNTY — $5,000 over 1y, 0.1% of budgetMONTEREY BAY AQUARIUM FOUNDATION — $5,000 over 1y, 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.

Marin Community Found…Silicon Valley Commun…Atkinson FoundationThe David and Lucile …The Intuit FoundationThe San Francisco Fou…Jewish Community Fede…The Palo Alto Communi…Second Harvest of Sil…Bothin FoundationKaiser Foundation Hos…McNabb Foundation
Marin Community FoundationCA42.2× affinity21 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Marin Community Foundation · Silicon Valley Community Foundation · Atkinson Foundation · The David and Lucile Packard Foundation · The Intuit Foundation · The San Francisco Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · The Palo Alto Community Fund · Second Harvest of Silicon Valley · Bothin Foundation · Kaiser Foundation Hospitals · McNabb Foundation

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 Donald B Tanklage and Carole F Tanklage Foundation 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 or a single department — and drag the year to watch it move.

2024
’20’21’22’23’24’25
no gov · 00%6%25%56%100%your share of their income ↑0%25%50%75%100%share of the org’s income from government →median 0%
  • Wounded Warrior Project Inc — 0% of income from government
no gov moneyreceives it· size = income
0get no government money at all
6report 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, FY20–25

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.

05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Donald B Tanklage and Carole F Tanklage Foundation?

Find your warmest path to Donald B Tanklage and Carole F Tanklage Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

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 51 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 e-file return for fiscal year 2019, released 2019. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home
State money flows
the interactive map of money crossing state lines