Private foundation · Hillsborough, CA

The Michael and Sally Mayer

View org profile →Find similar funders →Invitation only
Typical grant size
$500 – $2K – $8K
25th · median · 75th percentile
Unique recipients
19
Repeat grantees
5
funded 2+ years

Application procedures · from 2024 990-PF

Leadership · from 2024 990-PF

Sally Mayer
PRESIDENT
Michael Mayer
TREASURER
Rosemary-mayer Hintz
SECRETARY
David Mayer
DIRECTOR
Stephen Mayer
DIRECTOR
Greg Hintz
DIRECTOR
Andrea Mayer
DIRECTOR

Source: IRS Form 990-PF, Part VII. Officers, directors, and trustees as reported by the foundation.

Payout rate · TY 2024
4.2%
grants paid ÷ assets · ~5% IRS minimum
'20
'21
'22
'23
'24
85
Total grants awarded
$462K
Total amount
$5K
Average grant
$48K
Largest grant

Giving by year

2024
$73K
13 grants
2023
$57K
13 grants
2022
$102K
20 grants
2021
$116K
20 grants
2020
$114K
19 grants

Top recipients

Archbishop Riordan High School
5 grants · CA
$92K
Nami
3 grants · CA
$58K
San Mateo Pal
5 grants · CA
$47K
Family Connections
4 grants · CA
$39K
Service League Hope House
4 grants · CA
$37K
Cal Club House
3 grants · CA
$27K
4 grants · CA · ✓ Exact match
$21K
Amor
3 grants · CA
$15K
San Mateo Service League Hope House
1 grant · CA
$15K
Las Lomitas
2 grants · CA
$12K

Recipient names are as reported on the 990-PF. ✓ Exact match = EIN matched to IRS records by exact name + state; ≈ likely match = EIN inferred from a closely similar name. The recipient EIN is never stated on the form — it is DoubleNine’s match.

Recent grants · most recent filings first

San Mateo Service League Hope House
GENERAL OPERATING EXPENSES
CA · TY 2024
$15K
San Mateo Pal
GENERAL OPERATING EXPENSES
CA · TY 2024
$10K
Family Connections
GENERAL OPERATING EXPENSES
CA · TY 2024
$8K
Nami
GENERAL OPERATING EXPENSES
CA · TY 2024
$8K
Heart for Humanity
GENERAL OPERATING EXPENSES
CA · TY 2024
$6K
Uc San Diego
GENERAL OPERATING EXPENSES
CA · TY 2024
$5K
Serra Hs
GENERAL OPERATING EXPENSES
CA · TY 2024
$5K
Fund for Portland Public Schools
GENERAL OPERATING EXPENSES
OR · TY 2024
$5K
Lymelight
GENERAL OPERATING EXPENSES
CA · TY 2024
$5K
Archbishop Riordan High School
GENERAL OPERATING EXPENSES
CA · TY 2024
$5K
First Presbyterian Church of Burlingame
GENERAL OPERATING EXPENSES
CA · TY 2024
$1K
Bok Ranch
GENERAL OPERATING EXPENSES
CA · TY 2024
$1K
San Mateo Fellowship
GENERAL OPERATING EXPENSES
NY · TY 2024
$85
San Mateo Pal
GENERAL OPERATING EXPENSES
CA · TY 2023
$22K
Service League Hope House
GENERAL OPERATING EXPENSES
CA · TY 2023
$17K
Ll Foundation
GENERAL OPERATING EXPENSES
CA · TY 2023
$6K
Rose City Park School
GENERAL OPERATING EXPENSES
OR · TY 2023
$5K
Solmateo San Mateo
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
The Urban Paw
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
San Mateo Fellowship
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
Caritas Creek
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
Bok Ranch
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
Archbishop Riordan High School
GENERAL OPERATING EXPENSES
CA · TY 2023
$1K
Sing for America
GENERAL OPERATING EXPENSES
CA · TY 2023
$500
Hip Housing
GENERAL OPERATING EXPENSES
CA · TY 2023
$500
Filoli
GENERAL OPERATING EXPENSES
CA · TY 2023
$234
Nami
GENERAL OPERATING EXPENSES
CA · TY 2022
$20K
First Presbyterian Church of Burlingame
GENERAL OPERATING EXPENSES
CA · TY 2022
$13K
San Mateo Pal
GENERAL OPERATING EXPENSES
CA · TY 2022
$12K
Archbishop Riordan High School
GENERAL OPERATING EXPENSES
CA · TY 2022
$11K
Jazz at the Ballroom
GENERAL OPERATING EXPENSES
CA · TY 2022
$10K
Amor
GENERAL OPERATING EXPENSES
CA · TY 2022
$10K
Cal Club House
GENERAL OPERATING EXPENSES
CA · TY 2022
$10K
Family Connections
GENERAL OPERATING EXPENSES
CA · TY 2022
$8K
Service League Hope House
GENERAL OPERATING EXPENSES
CA · TY 2022
$3K
Lymelight
GENERAL OPERATING EXPENSES
CA · TY 2022
$2K
Filoli
GENERAL OPERATING EXPENSES
CA · TY 2022
$1K
Cora
GENERAL OPERATING EXPENSES
CA · TY 2022
$1K
Pets in Need
GENERAL OPERATING EXPENSES
CA · TY 2022
$1K
New Life Community Church
GENERAL OPERATING EXPENSES
CA · TY 2022
$795
Mills-peninsula Hospital
GENERAL OPERATING EXPENSES
CA · TY 2022
$500
Consumer Reports
GENERAL OPERATING EXPENSES
NY · TY 2022
$336
Fine Arts Museum of SF
GENERAL OPERATING EXPENSES
CA · TY 2022
$299
Alcoholics Anonymous
GENERAL OPERATING EXPENSES
CA · TY 2022
$143
San Mateo Fellowship
GENERAL OPERATING EXPENSES
CA · TY 2022
$56
Bay Area Ballers Youth Foundation
GENERAL OPERATING EXPENSES
CA · TY 2022
$25
Archbishop Riordan High School
GENERAL OPERATING EXPENSES
CA · TY 2021
$48K
Nami
GENERAL OPERATING EXPENSES
CA · TY 2021
$30K
San Mateo County Parks
GENERAL OPERATING EXPENSES
CA · TY 2021
$9K
Family Connections
GENERAL OPERATING EXPENSES
CA · TY 2021
$5K

Source: IRS Form 990-PF, Part XV. Up to 50 most recent grants shown.