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Michigan · 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.

$1.8M
Granted FY2024(still arriving)
9
Grants FY2024
4
Organizations funded FY2023
75%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$100,000
Largest grant, FY2024
$500,000
Organizations funded a year
4 to 6
FY2022 to FY2023
States reached, FY2024
2
Total assets, FY2024
$23M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 75% of the organizations Martha P Mack Foundation funded were first-time grantees, receiving 83% of its grant dollars.

The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving9$1.8M44%
FY20234$1.1M75%
FY20226$456kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2022 to 2024.

Health$2.1MEducation$906kScience & Tech$200kHousing & Shelter$100kHuman Services$80k

Top grantees

Largest recipients by total granted, FY2022 to FY2024, and the share of each one’s budget the grants supplied at peak.

Show all 11 grantees
All grantees of Martha P Mack Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Scripps Health$1,100,00020%
Sanford Burnham Prebys Medical Discovery Institute$800,00030%
Uc San Diego Foundation$505,00020%
University of San Diego$250,00010%
The Salk Institute for Biological Studies$200,00020%
The Scripps Research Institute$100,00010%
Sharp Healthcare Foundation$100,00010%
The Salvation Army Ventura Residences Inc$100,0001n/a
Southern Methodist University$51,00020%
The Salvation Army$50,0001n/a
Support the Enlisted Project Inc$30,00011%

What it could do for these grantees

Plus 2 recipients with no EIN on record ($105k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Martha P Mack Foundation supplied at peak.

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetScripps Health: $1,100,000 over 2y, 0.0% of budgetSanford Burnham Prebys Medical Discovery Institute: $800,000 over 3y, 0.4% of budgetUc San Diego Foundation: $505,000 over 2y, 0.2% of budgetUniversity of San Diego: $250,000 over 1y, 0.1% of budgetThe Salk Institute for Biological Studies: $200,000 over 2y, 0.1% of budgetThe Scripps Research Institute: $100,000 over 1y, 0.0% of budgetSharp Healthcare Foundation: $100,000 over 1y, 0.3% of budgetSouthern Methodist University: $51,000 over 2y, 0.0% of budgetSupport the Enlisted Project Inc: $30,000 over 1y, 1.1% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 9.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Rancho Santa Fe FoundationCA13.7× affinity4 shared granteesties to 5 of 5Hover any node to trace its alignments.Compare side by side →

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Martha P Mack Foundation with peer funders

About Martha P Mack Foundation

How much does Martha P Mack Foundation give?
Martha P Mack Foundation reported 9 grants totaling $1,785,000 in its FY2024 IRS filing. It funded between 4 and 6 organizations a year over FY2022 to FY2023.
What does Martha P Mack Foundation fund?
By grant dollars over FY2022 to FY2024, its largest causes are Health (62%), Education (27%), Science & Tech (6%).
Who are Martha P Mack Foundation's largest grantees?
By total granted over FY2022 to FY2024: Scripps Health ($1.1M), Sanford Burnham Prebys Medical Discovery Institute ($800k), Uc San Diego Foundation ($505k).
Does Martha P Mack Foundation fund new organizations?
In FY2023, 75% of the organizations it funded were first-time grantees.
Does Martha P Mack Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Martha P Mack Foundation?
Its strongest co-funders, measured against what their size predicts, include Rancho Santa Fe Foundation, Jewish Community Foundation of San Diego, The San Diego Foundation.
Where is Martha P Mack Foundation based?
Martha P Mack Foundation is based in MI.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 13 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

Generated from the IRS Form 990-PF e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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