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THE MISSION OF THE SAN MATEO COUNTY SHERIFF'S ACTIVITIES LEAGUE IS TO FOSTER RELATIONSHIPS BETWEEN DEPUTIES, YOUTH, FAMILIES AND THE COMMUNITY IN ORDER TO HELP OUR YOUTH REACH THEIR FULL POTENTIAL.
Source: IRS Form 990 (Tax Year 2025)
Source: IRS Form 990 via ProPublica Nonprofit Explorerⓘ Leadership data below reflects a more recent filing (Tax Year 2025) from the IRS e-file system.
Total Revenue
▼$950.6K
Total Contributions
$839K
Total Expenses
▼$845K
Total Assets
$866.3K
Total Liabilities
▼$0
Net Assets
$866.3K
Officer Compensation
→$0
Other Salaries
$0
Investment Income
▼$372
Fundraising
▼$140.2K
Source: USAspending.gov
No federal awards found for this organization.
USAspending.gov tracks federal grants, cooperative agreements, and other financial assistance. Not all nonprofits receive federal funding.
Source: Federal Audit Clearinghouse (fac.gov)
No federal single audit records found for this organization.
Single audits are required for entities expending $750,000+ in federal awards annually.
Tax Year 2025 · Source: IRS e-Filed Form 990
Members of the governing board. Board members often serve without compensation.
| Name | Title | Hrs/Wk | Compensation | Related Orgs | Other |
|---|
Source: IRS Publication 78, Auto-Revocation List & e-Postcard Data
Tax-deductible contributions: Yes
Deductibility code: PC
990-N (e-Postcard) Filing History
This organization files simplified Form 990-N (annual gross receipts ≤ $50,000).
Sources: IRS e-Filed Form 990 (XML) & ProPublica Nonprofit Explorer
Scroll →
| Year | Revenue | Contributions | Expenses | Assets | Net Assets |
|---|---|---|---|---|---|
| 2024 | $950.6K | $839K | $845K | $866.3K | $866.3K |
| 2023 | $610.7K | $595.1K | $1.1M | $760.7K | $760.7K |
| 2022 | $767.3K | $766.9K | $828K | $990.8K | $990.8K |
| 2021 | $761.4K | $764.8K | $764.1K | $1.1M |
Sources: ProPublica Nonprofit Explorer & IRS e-File Index
Financial data: IRS Form 990 via ProPublica Nonprofit Explorer (Tax Year 2024)
Leadership & compensation: IRS e-Filed Form 990, Part VII (Tax Year 2025)
Organization info: IRS Business Master File · ProPublica Nonprofit Explorer
Tax-deductibility: IRS Publication 78
| Total |
|---|
| Adam Patterson | Director | 2 | $0 | $0 | $0 | $0 |
| Eric Berggren | Director | 2 | $0 | $0 | $0 | $0 |
| Jaime Gonzalez | Director | 2 | $0 | $0 | $0 | $0 |
| James Brown | Director | 2 | $0 | $0 | $0 | $0 |
| Jerome Madigan | Director | 2 | $0 | $0 | $0 | $0 |
| Joshua Parker | Director | 2 | $0 | $0 | $0 | $0 |
| Lilian Tashiro | Director | 2 | $0 | $0 | $0 | $0 |
| Mark Flegel | Director | 2 | $0 | $0 | $0 | $0 |
| Mason Lok | Acting Exe Dir. | 2 | $0 | $0 | $0 | $0 |
| Perea Dan | Director | 2 | $0 | $0 | $0 | $0 |
| Steve Wagstaffe | Director | 2 | $0 | $0 | $0 | $0 |
| Steven Booker | Director | 2 | $0 | $0 | $0 | $0 |
| Victor Aenlle | Director | 2 | $0 | $0 | $0 | $0 |
Adam Patterson
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Eric Berggren
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Jaime Gonzalez
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
James Brown
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Jerome Madigan
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Joshua Parker
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Lilian Tashiro
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Mark Flegel
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Mason Lok
Acting Exe Dir.
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Perea Dan
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Steve Wagstaffe
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Steven Booker
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Victor Aenlle
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
| $1.1M |
| 2020 | $1.4M | $1M | $1.6M | $1.2M | $1.1M |
| 2019 | $1.7M | $1M | $1.8M | $1.3M | $1.2M |
| 2018 | $1.6M | $1.1M | $1.5M | $724.8K | $724.8K |
| 2017 | $1.2M | $773.4K | $1.3M | $694.7K | $499.7K |
| 2016 | $578K | $264.2K | $674.1K | $779K | $595.9K |
| 2015 | $1.1M | $481K | $966.5K | $692.1K | $692.1K |
| 2014 | $1M | $472K | $813.7K | $558.8K | $558.8K |
| 2013 | $375.1K | $218.2K | $236.7K | $349K | $349K |
| 2012 | $230.4K | $230.4K | $135.9K | $170K | $170K |
| 2022 | 990 | Data |
| 2021 | 990 | Data | PDF not yet published by IRS |
| 2020 | 990 | Data | PDF not yet published by IRS |
| 2019 | 990 | Data |
| 2018 | 990 | Data |
| 2017 | 990 | Data |
| 2016 | 990 | Data |
| 2015 | 990 | Data |
| 2014 | 990 | Data |
| 2013 | 990 | Data |
| 2012 | 990 | Data |