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Governance Register
US nonprofit · EIN 464873378 · Riverside, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 464873378) - 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 time served.Latest return IRS Form 990 series e-file data - 990EZ for the year to 31 July 2025: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2023.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Riverside Poly High School Theater Booster Club Corporation's network

3 peoplei3 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (3). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

3 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.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record.
NameRole as filedSinceOn the board
Candice BowmanTreasurer2025
1 yr
Dina CalderonjVP2025
1 yr
Katherine LaagPresident2025
1 yr
Under 5 years5 to 6 years6 years or more

Pay and hours

year to 31 July 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
Katherine LaagPresident5$0
Dina CalderonjVP5$0
Candice BowmanTreasurer5$0

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

About

Legal name
Riverside Poly High School Theater Booster Club Corporation
EIN
464873378
Address
3457 Arlington Ave Ste 104 PMB 323, Riverside, CA, 92506-3220
State
California
Activity (NTEE)
Z99 Unknown
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Unknown
Size band
1 (IRS master file code)
IRS ruling date
1 August 2014
Status
Code 01 (unconditional exemption)
Form 990 filings on record
1, latest 2025
IRS Publication 78
PC (contributions deductible)
Principal officer
Kat Laag (Form 990-N, tax year 2023)

Most connected

Longest observed on the filings

≥1years on the filingsCandice Bowman
≥1years on the filingsDina Calderonj
≥1years on the filingsKatherine Laag

Latest return

year to 31 July 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 July 2025. US dollars, as filed.
Total assets
$8k
Total liabilities
$0
Net assets or fund balances
$8k

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$4k$6kDeficit $1k

As filed on the IRS Form 990. US dollars.