Civic Intelligence

San Mateo County Sheriffs Activities League

990 • Fiscal year 2025 • EIN 45-0617342

Jul 01, 2024 to Jun 30, 2025 • Filed on Nov 10, 2025

Organization Profilewww.sheriffsactivitiesleague.com
3151 Edison WayRedwood City, CA 94063

(650) 257-3407

Siviq Scores

Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.

Liabilities / Assets

19th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Liabilities / Revenue

19th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Net Margin

72nd percentile

18%

Higher net margin than 72% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Top Officer Pay

42nd percentile

$0

Higher top officer pay than 42% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Asset Growth

82nd percentile

21%

Faster asset growth than 82% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Revenue Growth

52nd percentile

7.1%

Faster revenue growth than 52% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets19th percentile

Assets

Up

$1,044,806

Up $178,545 (+21%) from 2024

Net Assets

Up

$1,044,806

Up $178,545 (+21%) from 2024

Liabilities

Flat

$0

Flat from 2024

Revenue And Expenses
Liabilities / Revenue19th percentileNet Margin72nd percentile

Revenue

Up

$1,017,635

Up $67,026 (+7.1%) from 2024

Expenses

Down

$839,090

Down $5,912 (-0.7%) from 2024

Net Income

Up

$178,545

Up $72,938 (+69%) from 2024

Historical Trend

Balance Sheet Trend

Asset Growth82nd percentile

The highlighted filing sits inside the broader history for assets, liabilities, and net assets.

$1.5M$1.0M$500K$0Assets 2012: $169,991Liabilities 2012: $0Net Assets 2012: $169,9912012Assets 2013: $349,029Liabilities 2013: $0Net Assets 2013: $349,0292013Assets 2014: $558,773Liabilities 2014: $0Net Assets 2014: $558,7732014Assets 2015: $692,055Liabilities 2015: $0Net Assets 2015: $692,0552015Assets 2016: $779,031Liabilities 2016: $183,109Net Assets 2016: $595,9222016Assets 2017: $694,737Liabilities 2017: $194,995Net Assets 2017: $499,7422017Assets 2018: $724,819Liabilities 2018: $0Net Assets 2018: $724,8192018Assets 2019: $1,323,872Liabilities 2019: $132,989Net Assets 2019: $1,190,8832019Assets 2020: $1,151,660Liabilities 2020: $97,473Net Assets 2020: $1,054,1872020Assets 2021: $1,051,496Liabilities 2021: $5Net Assets 2021: $1,051,4912021Assets 2022: $990,778Liabilities 2022: $0Net Assets 2022: $990,7782022Assets 2023: $760,654Liabilities 2023: $0Net Assets 2023: $760,6542023Assets 2024: $866,261Liabilities 2024: $0Net Assets 2024: $866,2612024Assets 2025: $1,044,806Liabilities 2025: $0Net Assets 2025: $1,044,8062025

Highlighted filing

2025

Assets$1,044,806
Liabilities$0
Net Assets$1,044,806
Open 2025 Filing

Operations Trend

Revenue Growth52nd percentile

Revenue, expenses, and net income across loaded years, with this filing highlighted.

$2.0M$1.0M$0-$1.0MRevenue 2012: $230,353Expenses 2012: $135,949Net Income 2012: $94,4042012Revenue 2013: $375,136Expenses 2013: $236,678Net Income 2013: $138,4582013Revenue 2014: $1,040,513Expenses 2014: $813,657Net Income 2014: $226,8562014Revenue 2015: $1,107,728Expenses 2015: $966,452Net Income 2015: $141,2762015Revenue 2016: $577,970Expenses 2016: $674,103Net Income 2016: -$96,1332016Revenue 2017: $1,173,429Expenses 2017: $1,269,609Net Income 2017: -$96,1802017Revenue 2018: $1,641,581Expenses 2018: $1,547,730Net Income 2018: $93,8512018Revenue 2019: $1,740,104Expenses 2019: $1,750,407Net Income 2019: -$10,3032019Revenue 2020: $1,423,803Expenses 2020: $1,560,499Net Income 2020: -$136,6962020Revenue 2021: $761,423Expenses 2021: $764,120Net Income 2021: -$2,6972021Revenue 2022: $767,255Expenses 2022: $827,967Net Income 2022: -$60,7122022Revenue 2023: $610,693Expenses 2023: $1,090,818Net Income 2023: -$480,1252023Revenue 2024: $950,609Expenses 2024: $845,002Net Income 2024: $105,6072024Revenue 2025: $1,017,635Expenses 2025: $839,090Net Income 2025: $178,5452025

Highlighted filing

2025

Revenue$1,017,635
Expenses$839,090
Net Income$178,545
Open 2025 Filing
Jump To
Filing Snapshot
Filing Period
Jul 1, 2024 to Jun 30, 2025
Signed
Nov 10, 2025
Return Version
2024v5.2
Gross Receipts
$1,050,383
Mission and Program Overview

Mission

The mission of the sheriff's activities league is to invest in all youth of san mateo county by creating opportunities that guide them toward their full potential through impactful programs, which foster relationships between deputies, youth, families and the community.

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.

Balance Sheet Detail
LineBeginningEndChange
Assets
Cash and Non-Interest-Bearing Accounts$839,332$1,018,636▲ $179,304
Inventories for Sale or Use$12,500$12,500→ $0
Land, Buildings, and Equipment, Net$9,428$8,669▼ $759
Savings and Temporary Cash Investments-$0-
Accounts Receivable-$0-
Other Notes and Loans Receivable, Net-$0-
Pledges and Grants Receivable-$0-
Receivable From Disqualified Prsn-$0-
Receivables From Officers Etc-$0-
Investments Other Securities-$0-
Investments Program Related-$0-
Investments in Publicly Traded Securities-$0-
Intangible Assets-$0-
Prepaid Expenses and Deferred Charges-$0-
Total Assets$866,261$1,044,806▲ $178,545
Other Assets Total$5,001$5,001→ $0
Liabilities
Total Liabilities$0$0→ $0
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$866,261$1,044,806▲ $178,545
Total Net Assets Fund Balance$866,261$1,044,806▲ $178,545
Total Liabilities and Net Assets / Fund Balance$866,261$1,044,806▲ $178,545

Asset Categories

AssetBook ValueDepreciationBasis
Equipment$6,384$60,983$67,367
Other Land Buildings$2,285$6,706$8,991
Compensation and Service Providers
Top Officer Pay42nd percentile

Board Members and Trustees

NameTitle
Mason LokActing Exe Director
Adam PattersonDirector
Eric BerggrenDirector
Jaime GonzalezDirector
James BrownDirector
Jerome MadiganDirector
Joshua ParkerDirector
Lilian TashiroDirector
Mark FlegelDirector
Perea DanDirector
Steve WagstaffeDirector
Steven BookerDirector
Victor AenlleDirector
Revenue and Support

Revenue Composition

Contributions and Grants
$901,911
Program Service Revenue
$16,487
Investment Income
$6,007
Other Revenue
$93,230
All Other Contributions
$118,153
Change in Net Assets
$178,545
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$839,090
Total Fundraising Expense$4,318
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Other$99,544$328,934-$428,478
Occupancy-$195,885-$195,885
Insurance$32,775$49,980-$82,755
Information Technology-$40,198-$40,198
Fees for Services Accounting-$11,237-$11,237
Office Expenses$1,140$5,644-$6,784
Advertising-$2,336-$2,336
Depreciation Depletion-$759-$759
Other Expenses$42,435$25$1,026$25
All Other Expenses$-20,747$10,101$3,292$-7,354
Total Functional Expenses$155,147$679,625$4,318$839,090
Fundraising, Events, and Gaming
Fundraising activities
Yes
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Fundraising Gross Income$125,978
Fundraising Direct Expenses$32,748
Professional Fundraising Fees$0

Fundraising Events

EventGross ReceiptsGross RevenueDirect ExpensesNet Income
Food Wine & Heroes$125,978$125,978$32,748$93,230
Total Events$125,978$125,978$32,748$93,230
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Insider Transactions and Loans

Loans and Receivables

Line ItemBeginningEndChange
Receivables from Disqualified Persons-$0-
Receivables from Officers, Directors, Trustees, and Key Employees-$0-
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Backup withholding compliance
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
No
Audited financial statements prepared
No
Key decisions subject to board approval
Yes
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section B, Line 11B

“Form 990 is provided to board members for review, discussion and approval.”

Form 990, Part VI, Section B, Line 12C

“Board members discuss any potential conflicts during board meetings.”

Form 990, Part VI, Section C, Line 18

“Documents available upon request.”

Form 990, Part VI, Section C, Line 19

“Documents available upon request.”

Filing and Contact Details

Filer

Filer Name
San Mateo County Sheriffs
EIN
45-0617342
Phone
6502573407
Address
3151 EDISON WAY, REDWOOD CITY, CA 94063

Signing Officer

Name
Mason Lok
Title
Acting Executive Director
Signed
2025-11-10
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Mason Lok
Formed
2011
Legal Domicile
CA
Voting Board Members
13
Independent Board Members
9
Employees
0
Volunteers
720

Preparer

Firm
Sk Accountancy Corporation
Address
1151 Harbor Bay Pkwy Ste 202, Alameda, CA 94502
Preparer
Nikki Yun Zhang CPA
Phone
5103550492
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IRS990/MissionDesc0THE MISSION OF THE SHERIFF'S ACTIVITIES LEAGUE IS TO INVEST IN ALL YOUTH OF SAN MATEO COUNTY BY CREATING OPPORTUNITIES THAT GUIDE THEM TOWARD THEIR FULL POTENTIAL THROUGH IMPACTFUL PROGRAMS, WHICH FOSTER RELATIONSHIPS BETWEEN DEPUTIES, YOUTH, FAMILIES AND THE COMMUNITY.
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IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt00
IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt0866261
IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt01044806
IRS990/NoListedPersonsCompensatedInd0X
IRS990/NondeductibleContributionsInd0false
IRS990/OccupancyGrp/ManagementAndGeneralAmt0195885
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IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt05644
IRS990/OfficeExpensesGrp/ProgramServicesAmt01140
IRS990/OfficeExpensesGrp/TotalAmt06784
IRS990/OfficerMailingAddressInd0false
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IRS990/Organization501c3Ind0X
IRS990/OrganizationFollowsFASB117Ind0X
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IRS990/OtherExpensesGrp/Desc0PROGRAM EXPENSES
IRS990/OtherExpensesGrp/Desc1MEMBERSHIP
IRS990/OtherExpensesGrp/Desc2BANK & CC FEES
IRS990/OtherExpensesGrp/FundraisingAmt01026
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt033716
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt1810
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt225
IRS990/OtherExpensesGrp/ProgramServicesAmt042435
IRS990/OtherExpensesGrp/TotalAmt077177
IRS990/OtherExpensesGrp/TotalAmt1810
IRS990/OtherExpensesGrp/TotalAmt225
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IRS990/OtherRevenueTotalAmt00
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IRS990/OthNotesLoansReceivableNetGrp/EOYAmt00
IRS990/PartialLiquidationInd0false
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IRS990/PayrollTaxesGrp/TotalAmt00
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IRS990/PYGrantsAndSimilarPaidAmt0500
IRS990/PYInvestmentIncomeAmt0372
IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt00
IRS990/PYOtherExpensesAmt0844502
IRS990/PYOtherRevenueAmt098273
IRS990/PYProgramServiceRevenueAmt012994
IRS990/PYRevenuesLessExpensesAmt0105607
IRS990/PYTotalExpensesAmt0845002
IRS990/PYTotalRevenueAmt0950609
IRS990/QuidProQuoContributionsInd0false
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IRS990/RcvFndsToPayPrsnlBnftCntrctInd0false
IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt00
IRS990/ReconcilationRevenueExpnssAmt0178545
IRS990/RelatedEntityInd0false
IRS990/RelatedOrganizationCtrlEntInd0false
IRS990/ReportInvestmentsOtherSecInd0false
IRS990/ReportLandBuildingEquipmentInd0true
IRS990/ReportOtherAssetsInd0false
IRS990/ReportOtherLiabilitiesInd0false
IRS990/ReportProgramRelatedInvstInd0false
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IRS990/RoyaltiesGrp/TotalAmt00
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IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt0838970
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt0595113
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt0766922
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt0764820
IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt03867736
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IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus1YearAmt0372
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus2YearsAmt0356
IRS990ScheduleA/GrossInvestmentIncome509Grp/CurrentTaxYearMinus3YearsAmt0333
IRS990ScheduleA/GrossInvestmentIncome509Grp/TotalAmt07068
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt0109716
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt0111266
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt015224
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt02059
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt0238265
IRS990ScheduleA/GrossReceiptsNonUnrltBusGrp/TotalAmt00
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearAmt06007
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus1YearAmt0372
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus2YearsAmt0356
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/CurrentTaxYearMinus3YearsAmt0333
IRS990ScheduleA/InvestmentIncomeAndUBTIGrp/TotalAmt07068
IRS990ScheduleA/InvestmentIncomeCYPct00.00170
IRS990ScheduleA/InvestmentIncomePYPct00.00030
IRS990ScheduleA/NetIncomeFromOtherUBIGrp/TotalAmt00
IRS990ScheduleA/OtherIncome509Grp/TotalAmt00
IRS990ScheduleA/Post1975UBTIGrp/TotalAmt00
IRS990ScheduleA/PubliclySupportedOrg509a2Ind0X
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IRS990ScheduleA/PublicSupportPY509Pct00.99750
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IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt0766922
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt0766879
IRS990ScheduleA/Total509Grp/TotalAmt04106001
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IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt0950608
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt0610693
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt0767255
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt0766879
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt04113069
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
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IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
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IRS990/ScheduleBRequiredInd0true
IRS990ScheduleD/EquipmentGrp/BookValueAmt06384
IRS990ScheduleD/EquipmentGrp/DepreciationAmt060983
IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt067367
IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt02285
IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt06706
IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt08991
IRS990ScheduleD/TotalBookValueLandBuildingsAmt08669
IRS990ScheduleG/AgrmtProfFundraisingActyInd0false
IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt032748
IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm0FOOD WINE & HEROES
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt0125978
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt0125978
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt0125978
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt0125978
IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt093230

Document Assets

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Filings

Displayed year

2025 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$1,044,806
Liabilities
$0
Net assets
$1,044,806
Revenue
$1,017,635
Expenses
$839,090
Net income
$178,545
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$1.04$0.00$1.04$1.02$0.84$0.18
2024XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.87$0.00$0.87$0.95$0.85$0.11
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.76$0.00$0.76$0.61$1.09$0.48
2022XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.99$0.00$0.99$0.77$0.83$0.06
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.05$0.00$1.05$0.76$0.76$0.00
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.15$0.10$1.05$1.42$1.56$0.14
2019Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.32$0.13$1.19$1.74$1.75$0.01
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.72$0.00$0.72$1.64$1.55$0.09
2017XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.69$0.19$0.50$1.17$1.27$0.10
2016Summary only. Only limited summary data is available for this year.$0.78$0.18$0.60$0.58$0.67$0.10
2015Detailed filing. Detailed filing data is available for this year.$0.69$0.00$0.69$1.11$0.97$0.14
2014Detailed filing. Detailed filing data is available for this year.$0.56$0.00$0.56$1.04$0.81$0.23
2013Summary only. Only limited summary data is available for this year.$0.35$0.00$0.35$0.38$0.24$0.14
2012Summary only. Only limited summary data is available for this year.$0.17$0.00$0.17$0.23$0.14$0.09