· Private foundation
Sijbrandij 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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- $10k–50k2 grants · $50k
- $50k–250k6 grants · $859k
- $250k+8 grants · $4.5M
| Recipient | Amount |
|---|---|
| OPEN RESEARCH LAB | $1,500,000 |
| INFORMATION AGE ACADEMY (THE LEVIT LAB INC) | $1,000,000 |
| GLOBAL IMPACT | $505,810 |
| GLOBAL IMPACT | $399,629 |
| GLOBAL IMPACT | $311,474 |
| Individual grant recipient | $310,000 |
| DIGITAL HARBOR FOUNDATION (TALENT MOBILITY FUND) | $250,000 |
| LAND USE ATLAS INC | $250,000 |
| ILLUMINATE (ACCESSIBLE BIG ART - NAGA AND THE CAPTAINESS) | $249,522 |
| Individual grant recipient | $220,000 |
| KIWIX | $120,000 |
| UNIVERSITY OF CHICAGO | $109,208 |
| ABUNDANCE NETWORK EDUCATION | $100,000 |
| UCLA FOUNDATION | $60,000 |
| UCLA FOUNDATION (HOUSING VOICE PODCAST - JANA GALLUS) | $31,950 |
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.
Dollar for dollar, your grants (FY21–24) land where the poverty rate runs at 10%, against an area that typically sits at 10%. 53% of your dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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
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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +468% since the first grant, against -4% for the ones you funded once.
5 repeat relationships — 1 still active in FY2024, 4 since wound down; 10 grantees were first funded in FY2024 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 13% of grant dollars renewed an existing relationship; $3.6M went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- GFGITLAB FOUNDATION2× · 2022–2023 · $11M · revenue +642%
- IGIndividual grant recipient2× · 2023–2024 · $1.0M
- AUAGORA UNIVERSITY INC2× · 2022–2023 · $198k · revenue +468%
Funded once
- UCUBI Charitable Incone grant, 2021 · $5.0M · revenue -70% · 94% of their budget
- STSIGNAL TECHNOLOGY FOUNDATIONone grant, 2022 · $1.0M · revenue +13%
- CFCENTER FOR INNOVATIVE GOVERNANCE RESEARCH CHARTER CITIES INSTITUTEone grant, 2023 · $750k
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
The open markets institute works to help people relearn how to use competition policy to build stronger democracies, more just and equitable societies, more innovative and sustainable economies, and a more secure and peaceful world.
Organization mission the observer research foundation america orf america is an independent, non-partisan, and nonprofit organization in washington dc dedicated to addressing policy challenges facing the united states, india, and their…
Transluce is an independent research lab that builds open, scalable technology for understanding ai systems and steering them in the public interest.
To engage in scientific research and educational activities throughout the world on behalf of and in conjunction with the university of chicago.
The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
See schedule onorc at the university of chicago conducts research and data science on critical societal issues to guide decision-making and the development of programs and public policy. our experts identify relationships and trends, and…
Orcid provides an identifier for individuals to use with their name as they engage in research, scholarship, and innovation activities. we provide open tools that enable transparent and trustworthy connections between researchers, their…
The mission of the uc davis foundation is to secure, steward and manage private gifts for uc davis.
Our mission is to accelerate scientific progress, understand the root causes of disease, and narrow the gap between discoveries and impact on patients.
Activate empowers scientists to reinvent the world by bringing their research to market. activate partners with u.s. based funders, research institutions, and other pillars of the hard technology community to help entrepreneurial…
For reference, the grantee most central to the portfolio’s shape is Medecins Sans Frontieres Usa Inc and the most unlike its peers is Keller Restaurant Relief Fund. 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 14 years old; the field is 14. You back the younger end — and your money leans older still.
The field is 24% startups (under 5 years old) — 15% of your grantees by number, and just 44% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 14% of the field you don’t fund.
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.
20 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. 20 of the 30 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.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 GITLAB FOUNDATION ↗
- Who funds Global Impact ↗
- Who funds UBI Charitable Inc ↗
- Who funds Open Research Lab ↗
- Who funds SIGNAL TECHNOLOGY FOUNDATION ↗
- Who funds UCLA FOUNDATION ↗
- Who funds LAND USE ATLAS INC ↗
- Who funds AGORA UNIVERSITY INC ↗
- Who funds TURN 2 U INC dba THE LAST MILE ↗
- Who funds University of Chicago ↗
- Who funds RESEARCH INSTITUTE ON TURKEY INC ↗
- Who funds Abundance Network Education ↗
- Who funds PADI AWARE FOUNDATION ↗
- Who funds Mercatus Center Inc ↗
- Who funds UNITED STATES FUND FOR UNICEF ↗
- Who funds MISALIGNMENT MUSEUM ↗
- Who funds Save The Children Federation Inc ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds KELLER RESTAURANT RELIEF FUND ↗
- Who funds SECOND HARVEST OF SILICON VALLEY ↗
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.
Open a dossier: Silicon Valley Community Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · National Philanthropic Trust · 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 Sijbrandij 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.
- Save the Children Federation Inc — 30% of income from government
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.
Warm introductions · Powered by PlinthPlus
How do I get to Sijbrandij Foundation?
Find your warmest path to Sijbrandij 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.