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Plinth

· Private foundation

Peter & Masha Plotkin Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$148k
Granted FY2024still arriving
14
Grants FY2024still arriving
1
States reached
$31k
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20172024.

Arts & Culture$490kEducation$342kHealth$45kYouth Development$20kHuman Services$20k
02FY2024 · 14 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2024

  • Under $10k3 grants · $10k
  • $10k–50k11 grants · $138k
$10,000
Median grant
1
States reached
$3.4M
Total assets
Largest grants
RecipientAmount
INNER-CITY ARTS$31,000
CHILDREN CAN ACHIEVE$15,000
HUMA HOUSE INC$12,000
TRABUCO HILLS HIGH SCHOOL$10,000
IRVINE VALLEY COLLEGE FOUNDATION$10,000
LAGUNA COLLEGE OF ART AND DESIGN$10,000
LAGUNA HILLS HIGH SCHOOL ART PROGRAM$10,000
APA MUSIC THEATER GUILD FUND$10,000
IRVINE HIGH SCHOOL$10,000
KIDSINGERS$10,000
LOS ANGELES LEADERSHIP FOUNDATION$10,000
VISTAMAR SCHOOL$5,000
ENCORE THEATRE GROUP$2,500
EXCEPTIONAL CHILDREN'S FOUNDATION$2,500
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 (FY21–24, $8k) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%EXCEPTIONAL CHILDREN'S FOUNDATION: $5k → 14%EXCEPTIONAL CHILDREN'S FOUNDATION: $3k → 14%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.

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.

74%of every dollar goes to organizations you’ve funded before.
$677k · 19 repeat orgs$239k to everyone else

19 repeat relationships — 8 still active in FY2024, 11 since wound down; 6 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

19
19

Total granted

$677k
$185k

Median revenue growth · since first grant

+9%
+49%

Still filing today

53%
32%

New vs renewed · share of each year

In FY2024, 63% of grant dollars renewed an existing relationship; $55k went to new ones.

50%100%’17’18’19’20’21’22’23’24
RenewedFirst-time

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

’17’18’19’20’21’22’23’24
EducationArts & CultureHuman ServicesPhilanthropyOther

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

  • LC
    LAGUNA COLLEGE OF ART & DESIGN
    7× · 2017–2024 · $77k · revenue +322%
  • IA
    INNER-CITY ARTS
    4× · 2019–2024 · $67k · revenue +27%
  • K
    KIDSINGERS
    5× · 2019–2024 · $47k · revenue +12%

Funded once

  • TH
    THE H E ART PROJECT dba ARTWORXLA
    one grant, 2023 · $22k · revenue -14%
  • IG
    Individual grant recipient
    one grant, 2022 · $20k
  • WC
    WISH CHARTER SCHOOL
    one grant, 2019 · $15k

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
San Francisco High School of the Arts

San Francisco Arts and Science Academy (ASA) provides TK5 grade students with a strong foundation in the arts, language, math, and science, fostering creativity, curiosity, and character development. Our bilingual, hands-on curriculum…

Education
2
Renaissance Arts Academy

Tk-12 charter public school focused on educational equity and success for all students with a priority on tradionally underserved populations.

Education
3
All About Kids La
Philanthropy
4
Los Angeles Academy of Arts and Enterprise

To prepare students for leadership in the arts and business; where creativity, academic knowledge and financial literacy are essential for success. we are providing an education that integrates the four lenses of learning: academics, arts,…

Education
5
California Institute of Contemporary Art
6
Hollywood Schoolhouse Inc

Hollywood Schoolhouse knows, values, and encourages fearless curiosity. Through a blended program of innovative academics and structured learning, our diverse community inspires students to be academically strong, artistically proud,…

Education
7
White Hall Arts Academy Foundation

White Hall Arts Academy Foundations mission is to use the power of the arts to educate empower and encourage low income communities. We strive to bridge the gap between mental health social emotional learning arts development and creative…

Arts & Culture
8
The Honarkar Foundation
Public Benefit
9
Los Angeles International Dance Festival
10
California Institute of the Arts

Calarts is a multidisciplinary community of artists. our ongoing educational endeavor is grounded in openness, experimentation, critical engagement, and creative freedom. through artistic practice, we transform ourselves, each other, and…

Arts & Culture
11
Oakland School for the Arts

To establish and maintain a positive school culture in which all students are motivated to learn, support each other, and have structures in place that assist students in accessing their full artistic and academic potential.

Education
12
Hermosa Beach Youth Music

To initiate and develop musci education programs for Hermosa Beach youth.

For reference, the grantee most central to the portfolio’s shape is Inner-City Arts and the most unlike its peers is Fair Burn Youth Association. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

Your grantees are a median of 21 years old; the field is 12. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number25%9%<5yr16%0%5–10yr20%36%10–20yr17%36%20–35yr10%5%35–55yr12%14%55yr+
THE FIELDby orgYOUR MONEYby value25%9%<5yr16%0%5–10yr20%24%10–20yr17%34%20–35yr10%3%35–55yr12%31%55yr+

The field is 25% startups (under 5 years old) — 9% of your grantees by number, and just 9% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 16% of the field you don’t fund.

orgs you fund
0.0%0/23
the rest of the field
16%
7,867/49,793

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

21 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. 21 of the 44 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)
3
Early backer (in before they grew)
20/21
Grantees still filing
13/21
Grew since you first funded

Where your money sits — by cause, then by grantee

TRABUCO HILLS HIGH SCHOOL — $67,000 · OtherTRABUCO HILLS HIGH SCHOOLCHILDREN CAN ACHIEVE INC — $37,000 · OtherCHILDREN CAN ACHIEVE INCLAGUNA HILLS HIGH SCHOOL — $33,000 · OtherLAGUNA HILLS HIGH SCHOOLAPA MUSIC THEATER GUILD — $30,000 · OtherAPA MUSIC THEATER GUILDLAGUNA HILLS HIGH SCHOOL ART DEPARTMENT — $20,000 · OtherIndividual grant recipient — $20,000 · OtherMUSICAL THEATER GUILD — $17,000 · OtherFAIR BURN YOUTH ASSOCIATION — $16,000 · OtherWISH CHARTER SCHOOL — $15,000 · OtherNEWPORT HARBOR HIGH SCHOOL — $15,000 · OtherHUNTINGTON BEACH HIGH SCHOOL — $15,000 · OtherCHRISTIAN ARTS & THEATRE — $14,000 · Other+13 more — $99,000 · Other+13 moreAZUSA PACIFIC UNIVERSITY — $88,000 · EducationAZUSA PACIFIC UNIVERSITYLAGUNA COLLEGE OF ART & DESIGN — $77,000 · EducationLAGUNA COLLEGE OF ART & DESIGNLOS ANGELES LEADERSHIP FOUNDATION — $47,000 · EducationLOS ANGELES LEADERSHIP FOUNDATIONWESTCHESTER ENRICHED SCIENCE MAGNETS SCHOOL PTO — $41,000 · EducationWESTCHESTER ENRICHED SCIENCE MAGNETS S…WISEBURN EDUCATION FOUNDATION — $20,000 · EducationWISEBURN EDUCATION FOUNDATIONVISTAMAR SCHOOL — $13,000 · EducationWESTSIDE INNOVATIVE SCHOOL HOUSE INC — $11,000 · Education+2 more — $17,500 · Education+2 moreINNER-CITY ARTS — $67,000 · Arts & CultureINNER-CITY ARTSKIDSINGERS — $47,000 · Arts & CultureKIDSINGERSTHE H E ART PROJECT dba ARTWORXLA — $22,000 · Arts & CultureTHE H E ART PROJECT …Huma House Inc — $12,000 · Arts & CultureHuma House IncApa Musical Theater Guild Fund — $10,000 · Arts & CultureApa Musical Theater …+2 more — $7,500 · Arts & CultureROTARY CLUB OF PLAYA VENICE SUNRISE — $20,000 · Human ServicesEXCEPTIONAL CHILDREN'S FOUNDATION — $7,500 · Human ServicesIrvine Valley College Foundation — $10,000 · Philanthropy
Other$398,000Education$314,500Arts & Culture$165,500Human Services$27,500Philanthropy$10,000

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 budgetAZUSA PACIFIC UNIVERSITY — $88,000 over 4y, 0.0% of budgetLAGUNA COLLEGE OF ART & DESIGN — $77,000 over 7y, 0.1% of budgetINNER-CITY ARTS — $67,000 over 4y, 0.8% of budgetLOS ANGELES LEADERSHIP FOUNDATION — $47,000 over 4y, 6.5% of budgetKIDSINGERS — $47,000 over 5y, 5.6% of budgetWESTCHESTER ENRICHED SCIENCE MAGNETS SCHOOL PTO — $41,000 over 3y, 14% of budgetTHE H E ART PROJECT dba ARTWORXLA — $22,000 over 1y, 1.3% of budgetWISEBURN EDUCATION FOUNDATION — $20,000 over 2y, 6.6% of budgetROTARY CLUB OF PLAYA VENICE SUNRISE — $20,000 over 2y, 17% of budgetFAIR BURN YOUTH ASSOCIATION — $16,000 over 2y, 3.7% of budgetVISTAMAR SCHOOL — $13,000 over 2y, 0.1% of budgetHuma House Inc — $12,000 over 1y, 2.6% of budgetWESTSIDE INNOVATIVE SCHOOL HOUSE INC — $11,000 over 1y, 0.1% of budgetIrvine Valley College Foundation — $10,000 over 1y, 1.0% of budgetFriends of the Academy of Music Inc — $10,000 over 1y, 6.0% of budgetApa Musical Theater Guild Fund — $10,000 over 1y, 9.7% of budgetEXCEPTIONAL CHILDREN'S FOUNDATION — $7,500 over 2y, 0.0% of budgetGRAMMY MUSEUM FOUNDATION INC — $5,000 over 1y, 0.1% of budgetA PLACE CALLED HOME — $3,000 over 1y, 0.1% of budgetENCORE THEATRE GROUP — $2,500 over 1y, 0.4% 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.

  • Who funds AZUSA PACIFIC UNIVERSITY
  • Who funds LAGUNA COLLEGE OF ART & DESIGN
  • Who funds INNER-CITY ARTS
  • Who funds LOS ANGELES LEADERSHIP FOUNDATION
  • Who funds KIDSINGERS
  • Who funds WESTCHESTER ENRICHED SCIENCE MAGNETS SCHOOL PTO
  • Who funds THE H E ART PROJECT dba ARTWORXLA
  • Who funds WISEBURN EDUCATION FOUNDATION
  • Who funds ROTARY CLUB OF PLAYA VENICE SUNRISE
  • Who funds FAIR BURN YOUTH ASSOCIATION
  • Who funds VISTAMAR SCHOOL
  • Who funds Huma House Inc
  • Who funds WESTSIDE INNOVATIVE SCHOOL HOUSE INC
  • Who funds Irvine Valley College Foundation
  • Who funds Friends of the Academy of Music Inc
  • Who funds Apa Musical Theater Guild Fund
  • Who funds EXCEPTIONAL CHILDREN'S FOUNDATION
  • Who funds LAX COASTAL EDUCATION FOUNDATION
  • Who funds GRAMMY MUSEUM FOUNDATION INC

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.

California Community FoundationCA13.3× affinity5 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: California Community Foundation · Sempra Foundation · The Blackbaud Giving Fund · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 Peter & Masha Plotkin 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.

2025
202122232425
no gov · 00%6%25%56%100%your share of their income ↑0%4%8%11%15%share of the org’s 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
    ⤢ axis zoomed · 0–15%
    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.

    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Peter & Masha Plotkin Foundation?

    Find your warmest path to Peter & Masha Plotkin 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 44 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 2024, released 2024. Filings run roughly 12–24 months behind; figures are dated accordingly.

    Source object · view filing

    More from the funding graph