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Governance Register
US nonprofit · EIN 450617342 · Redwood City, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 450617342) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 30 June 2025: assets, liabilities, staff, website, telephone, pay.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2011.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

SAN Mateo County Sheriffs Activities League's network

12 people11 organisationsi12 people and 11 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (12). Violet dotted lines (11) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

12 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 12 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Adam AlbertiDirector2020
6 yrs
Christina CorpusDirector2019
7 yrs
Jerome MadiganDirector2023
3 yrs
Jaime GonzalezDirector2020
6 yrs
James BrownDirector2023
3 yrs
KAT Petrick (also filed as Kat Petrick)Treasurer2019
7 yrs
Ryan MonaghanDirector2023
3 yrs
Robert FoucraultDirector2020
6 yrs
SAL Zuno (also filed as Sal Zuno)Director2020
6 yrs
Steve WagstaffeDirector2019
7 yrs
Steven BookerDirector2020
6 yrs
Victor AenlleDirector2023
3 yrs
Under 5 years5 to 6 years6 years or moreShow all 12 →

Pay and hours

year to 30 June 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Mark FlegelDirector2$0
Victor AenlleDirector2$0
Steven BookerDirector2$0
James BrownDirector2$0
Eric BerggrenDirector2$0
Joshua ParkerDirector2$0
Adam PattersonDirector2$0
Jerome MadiganDirector2$0
Mason LokActing Exe Dir.2$0
Jaime GonzalezDirector2$0
Lilian TashiroDirector2$0
Perea DanDirector2$0
Steve WagstaffeDirector2$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
San Mateo County Sheriffs Activities League
EIN
450617342
Address
690 Broadway St, Redwood City, CA, 94063-3103
State
California
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. (as filed on the Form 990)
Activity (NTEE)
O50 Youth development
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Youth Development
Size band
6 (IRS master file code)
Formed
2011
Principal officer
Mason Lok (as named on the Form 990)
IRS ruling date
1 June 2011
Status
Code 01 (unconditional exemption)
Form 990 filings on record
5, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsChristina Corpus
≥7years on the filingsKAT Petrick
≥7years on the filingsSteve Wagstaffe
≥6years on the filingsAdam Alberti

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$1m
Total liabilities
$0
Net assets or fund balances
$1m
Contributions and grants received
$902k
Program service revenue
$16k
Employees
0
Volunteers
720