· Private foundation
Martha P Mack 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 FY2022–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k1 grant · $5k
- $10k–50k1 grant · $25k
- $50k–250k4 grants · $350k
- $250k+3 grants · $1.4M
| Recipient | Amount |
|---|---|
| SCRIPPS HEALTH FOUNDATION | $500,000 |
| SANFORD BURNHAM PREBYS | $500,000 |
| UC SAN DIEGO FOUNDATION | $405,000 |
| THE SCRIPPS RESEARCH INSTITUTE | $100,000 |
| SALK INSTITUTE FOR BIOLOGICAL STUDIES | $100,000 |
| SHARP HEALTHCARE FOUNDATION | $100,000 |
| THE SALVATION ARMY | $50,000 |
| SOUTHERN METHODIST UNIVERSITY | $25,000 |
| LA JOLLA INSTITUTE OF IMMUNOLOGY | $5,000 |
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 (FY22–24) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 7% of your dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-need ZIPs.
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.
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.
5 repeat relationships — 5 still active in FY2024, 0 since wound down; 4 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, 86% of grant dollars renewed an existing relationship; $255k 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
- SHSCRIPPS HEALTH2× · 2023–2024 · $1.1M · revenue +18%
- SBSANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE3× · 2022–2024 · $800k · revenue +7%
- USUC SAN DIEGO FOUNDATION2× · 2023–2024 · $505k · revenue +33%
Funded once
- UOUNIVERSITY OF SAN DIEGOgraduatedone grant, 2023 · $250k · revenue +34%
- ROREGENTS OF THE UNIVERSITY OF CALIFORNIAone grant, 2022 · $100k
- TSTHE SALVATION ARMY VENTURA RESIDENCES INCone grant, 2022 · $100k · revenue +4%
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 central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
At la jolla institute for immunology, our scientists focus on understanding how the immune system works in order to promote human health and prevent disease. our discoveries apply to many diseases, ranging from diabetes to heart disease,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
To harness the power of the human immune system and advanced computing technologies to create and translate scientific discoveries into next generation vaccines and therapies for prevention, control and cure of chronic diseases, enabling…
The graduate school of the stowers institute for medical research ("gssimr") exempt purpose is to provide graduate education that will prepare scholars for scientific research in the biological sciences.
Scu is a catholic and jesuit institution that makes student learning its central focus, promotes faculty and staff learning in its various forms, and exhibits organizational learning.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Our mission is to build a unique institute that bridges basic research and drug discovery, and that attracts the best and brightest scientists, physicians and students to work together synergistically to find cures for neglected human…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Stanford university is one of a select group of american universities that have achieved eminence in both undergraduate and graduate education and research - cont'd sch o.
For reference, the grantee most central to the portfolio’s shape is Uc San Diego Foundation and the most unlike its peers is Sanford Burnham Prebys Medical Discovery Institute. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
10 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. 10 of the 13 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 SCRIPPS HEALTH ↗
- Who funds SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE ↗
- Who funds UC SAN DIEGO FOUNDATION ↗
- Who funds UNIVERSITY OF SAN DIEGO ↗
- Who funds The Salk Institute for Biological Studies ↗
- Who funds THE SCRIPPS RESEARCH INSTITUTE ↗
- Who funds Sharp Healthcare Foundation ↗
- Who funds THE SALVATION ARMY VENTURA RESIDENCES INC ↗
- Who funds Southern Methodist University ↗
- Who funds SUPPORT THE ENLISTED PROJECT 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.
Open a dossier: Rancho Santa Fe Foundation · Jewish Community Foundation of San Diego · The San Diego Foundation · 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 Martha P Mack 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.
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.