Martha P Mack Foundation
Martha P Mack Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Detroit, MI. IRS filing data is available from 2021 through 2024. As of 2024, the organization holds $23.1M in total assets. In 2024, it awarded 9 grants totaling $1.8M. Net investment income was $6.1M.
Key facts about Martha P Mack Foundation
- EIN
- 30-6702159
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $1,785,000
- Grants made (2024)
- 9
- Average grant
- $198,333
- Median grant
- $100,000
- Total assets
- $23,114,274
- Primary geography
- California (99% of itemized 2024 grant dollars)
Data from IRS Form 990-PF, 2024; updated September 2026.
Who Martha P Mack Foundation funds
By grant dollars, the top recipient states for Martha P Mack Foundation's 9 itemized 2024 grants were California (99%). The most frequent recipient cities were La Jolla, CA (6 grants). None of its 9 grants with a stated purpose were described as general or operating support. Recurring purposes include "For Support of Daily" (9 grants).
How Martha P Mack Foundation gives
- In 2024 it paid out 176% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Next steps with Martha P Mack Foundation
- How to evaluate Martha P Mack Foundation as a funder
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Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$23.1M
+18.4% YoY
Annual Giving
$1.8M
+55.2% YoY
Grant Count
9
+125.0% YoY
Avg Grant Size
$198K
-31.0% YoY
Under IRS private-foundation payout rules, Martha P Mack Foundation reported a distributable amount of $1.0M for 2024 — the minimum it must pay out in qualifying distributions.
About Martha P Mack Foundation
Based on IRS filings
Martha P Mack Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Detroit, MI. IRS filing data is available from 2021 through 2024. As of 2024, the organization holds $23.1M in total assets. In 2024, it awarded 9 grants totaling $1.8M. Net investment income was $6.1M.
Focus Areas
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Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 9 itemized 2024 grant dollars.
States
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $23,114,274 | $19,525,151 | $8,620,209 |
| Revenue | $6,237,732 | $12,238,487 | $-292,601 |
| Expenses | $1,943,465 | $1,273,344 | $614,432 |
| Qualifying Distributions | $1,795,813 | $1,216,778 | $502,475 |
| Net Investment Income | $6,101,970 | $420,511 | $198,430 |
| Distributable Amount | $1,021,350 | $672,970 | $424,586 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2024
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 9 recipients in 2024
Grant Size Distribution
19 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2024 grants, the largest recipients include Sanford Burnham Prebys ($500,000), Scripps Health Foundation ($500,000), Uc San Diego Foundation ($405,000).
| Recipient | Purpose | Amount |
|---|---|---|
| SANFORD BURNHAM PREBYS La Jolla, CA | FOR SUPPORT OF DAILY | $500,000 |
| SCRIPPS HEALTH FOUNDATION La Jolla, CA | FOR SUPPORT OF DAILY | $500,000 |
| UC SAN DIEGO FOUNDATION La Jolla, CA | FOR SUPPORT OF DAILY | $405,000 |
| THE SCRIPPS RESEARCH INSTITUTE La Jolla, CA | FOR SUPPORT OF DAILY | $100,000 |
| SALK INSTITUTE FOR BIOLOGICAL STUDIES La Jolla, CA | FOR SUPPORT OF DAILY | $100,000 |
| SHARP HEALTHCARE FOUNDATION San Diego, CA | FOR SUPPORT OF DAILY | $100,000 |
| THE SALVATION ARMY Rancho Palos Verdes, CA | FOR SUPPORT OF DAILY | $50,000 |
| SOUTHERN METHODIST UNIVERSITY Dallas, TX | FOR SUPPORT OF DAILY | $25,000 |
| LA JOLLA INSTITUTE OF IMMUNOLOGY La Jolla, CA | FOR SUPPORT OF DAILY | $5,000 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2023 IRS filing
From 2023 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Bank of America N a | Trustee | 2 | $111,013 |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Martha P Mack Foundation?
Martha P Mack Foundation is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Detroit, MI. It holds $23.1M in total assets as of 2024.
How large is Martha P Mack Foundation?
As of 2024, Martha P Mack Foundation holds $23.1M in total assets with $6.2M in annual revenue. It awarded 9 grants totaling $1.8M in 2024.
Where does Martha P Mack Foundation operate?
Martha P Mack Foundation has awarded grants in California, Texas.
What size grants does Martha P Mack Foundation award?
In 2024, Martha P Mack Foundation awarded 9 grants totaling $1.8M — an average of about $198K per grant, based on its IRS Form 990 filings.
How much is Martha P Mack Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, Martha P Mack Foundation reported a distributable amount of $1.0M on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Martha P Mack Foundation's EIN?
Martha P Mack Foundation's EIN (Employer Identification Number) is 30-6702159. IRS Form 990 filing data is available on this page for 2021–2024.
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Data last updated September 2026. Sourced from IRS Form 990-PF filings.