The Michael and Sally Mayer
The Michael and Sally Mayer is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Hillsborough, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $1.8M in total assets. In 2024, it awarded 13 grants totaling $73K. Net investment income was $52K.
Key facts about The Michael and Sally Mayer
- EIN
- 20-3874924
- Latest 990 filing
- Form 990-PF, 2024
- Annual giving (2024)
- $72,710
- Grants made (2024)
- 13
- Average grant
- $5,593
- Median grant
- $5,000
- New grantees (estimate)
- 38% first-time grantees (5 of 13, 2024)
- Total assets
- $1,750,790
- Primary geography
- California (93% of itemized 2024 grant dollars)
Data from IRS Form 990-PF, 2024; updated September 2026. New grantees are estimated by matching recipient names across years (methodology).
Who The Michael and Sally Mayer funds
By grant dollars, the top recipient states for The Michael and Sally Mayer's 13 itemized 2024 grants were California (93%) and Oregon (7%). The most frequent recipient cities were San Mateo, CA (2 grants) and Burlingame, CA (2 grants). 100% of grants with a stated purpose were for general or operating support.
Is The Michael and Sally Mayer open to new grantees?
38%
first-time grantees, 2024
In 2024, 5 of 13 grantees (38%) were first-time recipients. First grants averaged $7K; repeat grants $5K. How we count
Medians: $5K first-time, $5K repeat.
- 31% of 2024 grantees were also funded in 2023. Method
- Giving fell 37% from 2021 to 2024. Method
- In 2024 it paid out 123% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized IRS Form 990-PF grant lists (2020–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Next steps with The Michael and Sally Mayer
- How to evaluate The Michael and Sally Mayer as a funder
Our grant prospecting guide: read the 990-PF, check fit, and decide whether to apply.
- Draft an LOI to The Michael and Sally Mayer with AI
AI grant writing that drafts from your organization’s own materials, in your voice.
- Track this opportunity in a free grant tracker
A free Google Sheets or Excel template for deadlines, award terms, and reports due.
Financial Overview
From 2024 IRS Form 990-PF · View filing
Total Assets
$1.8M
+0.3% YoY
Annual Giving
$73K
+26.6% YoY
Grant Count
13
+0.0% YoY
Avg Grant Size
$6K
+26.6% YoY
Under IRS private-foundation payout rules, The Michael and Sally Mayer reported a distributable amount of $59K for 2024 — the minimum it must pay out in qualifying distributions.
About The Michael and Sally Mayer
Based on IRS filings
The Michael and Sally Mayer is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Hillsborough, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $1.8M in total assets. In 2024, it awarded 13 grants totaling $73K. Net investment income was $52K.
Focus Areas
Ready to take the next step with The Michael and Sally Mayer?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 13 itemized 2024 grant dollars.
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $1,750,790 | $1,745,763 | $2,046,404 |
| Revenue | $68,483 | $23,827 | $58,827 |
| Expenses | $89,601 | $75,721 | $166,436 |
| Qualifying Distributions | $72,735 | $57,493 | $102,338 |
| Net Investment Income | $51,617 | $58,522 | $33,301 |
| Distributable Amount | $58,919 | $55,847 | $76,338 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
Grant Size Distribution
85 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2024 grants, the largest recipients include San Mateo Service League Hope House ($15,000), San Mateo Pal ($9,800), Family Connections ($7,500).
| Recipient | Purpose | Amount |
|---|---|---|
| SAN MATEO SERVICE LEAGUE HOPE HOUSE Redwood City, CA | GENERAL OPERATING EXPENSES | $15,000 |
| SAN MATEO PAL San Mateo, CA | GENERAL OPERATING EXPENSES | $9,800 |
| FAMILY CONNECTIONS Menlo Park, CA | GENERAL OPERATING EXPENSES | $7,500 |
| NAMI San Jose, CA | GENERAL OPERATING EXPENSES | $7,500 |
| HEART FOR HUMANITY Novato, CA | GENERAL OPERATING EXPENSES | $6,000 |
| FUND FOR PORTLAND PUBLIC SCHOOLS Portland, OR | GENERAL OPERATING EXPENSES | $5,000 |
| LYMELIGHT Burlingame, CA | GENERAL OPERATING EXPENSES | $5,000 |
| SERRA HS San Mateo, CA | GENERAL OPERATING EXPENSES | $5,000 |
| UC SAN DIEGO La Jolla, CA | GENERAL OPERATING EXPENSES | $5,000 |
| ARCHBISHOP RIORDAN HIGH SCHOOL San Francisco, CA | GENERAL OPERATING EXPENSES | $4,500 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
No officer or director reported compensation in the available filings.
From 2024 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Sally Mayer | President | 5 | — |
| Michael Mayer | Treasurer | 5 | — |
| Rosemary-Mayer Hintz | Secretary | 1 | — |
| David Mayer | Director | 1 | — |
| Stephen Mayer | Director | 1 | — |
| Greg Hintz | Director | 1 | — |
| Andrea Mayer | Director | 1 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is The Michael and Sally Mayer?
The Michael and Sally Mayer is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in Hillsborough, CA. It holds $1.8M in total assets as of 2024.
How large is The Michael and Sally Mayer?
As of 2024, The Michael and Sally Mayer holds $1.8M in total assets with $68K in annual revenue. It awarded 13 grants totaling $73K in 2024.
Where does The Michael and Sally Mayer operate?
The Michael and Sally Mayer has awarded grants in California, Michigan, New York, Oregon.
What size grants does The Michael and Sally Mayer award?
In 2024, The Michael and Sally Mayer awarded 13 grants totaling $73K — an average of about $6K per grant, based on its IRS Form 990 filings.
How much is The Michael and Sally Mayer required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2024, The Michael and Sally Mayer reported a distributable amount of $59K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is The Michael and Sally Mayer's EIN?
The Michael and Sally Mayer's EIN (Employer Identification Number) is 20-3874924. IRS Form 990 filing data is available on this page for 2020–2024.
Explore Open Grants
Browse active grant opportunities in The Michael and Sally Mayer's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Silicon Valley Community Foundation
Mountain View, CA
Assets
$12.3B
Grants
3,576
Total Given
$3.2B
Texas Instruments Foundation
Dallas, TX
Assets
$73.0M
Grants
4,484
Total Given
$22.6M
Jewish Community Federation of San
San Francisco, CA
Assets
$2.0B
Grants
991
Total Given
$123.7M
California Community Foundation
Los Angeles, CA
Assets
$2.3B
Grants
2,174
Total Given
$326.6M
Tides Foundation
San Francisco, CA
Assets
$534.5M
Grants
2,110
Total Given
$382.1M
The William & Flora Hewlett Foundation
Menlo Park, CA
Assets
$14.2B
Grants
2,001
Total Given
$625.0M
Sempra Foundation
San Diego, CA
Assets
$11.5M
Grants
1,501
Total Given
$1.8M
Marin Community Foundation
Novato, CA
Assets
$1.1B
Grants
1,383
Total Given
$176.2M
Conrad N Hilton Foundation
Westlake Village, CA
Assets
$7.4B
Grants
1,339
Total Given
$287.7M
Chamberlin Education Foundation
Richmond, CA
Assets
$80.6M
Grants
1,302
Total Given
$3.0M
Jpmorgan Chase Foundation
New York, NY
Assets
$1.2B
Grants
10,334
Total Given
$202.5M
Verizon Foundation
Basking Ridge, NJ
Assets
$23.8M
Grants
5,464
Total Given
$7.0M
More Funders in California
Data last updated September 2026. Sourced from IRS Form 990-PF filings.