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US nonprofit · EIN 205288478 · Union Grove, WIiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 205288478) - 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 - 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 (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 2015.Exemption status IRS Automatic Revocation of Exemption List (posted to 13 October 2026).Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Bronco Booster Club Inc

Donations deductible
Revenue
$70k
year to 31 July 2025
Expenses
$43k
year to 31 July 2025
Total assets
$64k
year to 31 July 2025
Net assets
$64k
assets less liabilities
Directors and trustees
3
2.4y av
Left since last filing
0
no seats appear to have opened
Activity
O12
Youth development
Filings on record
2
latest 2025
Exemption reinstated on 15 December 2019. The IRS had automatically revoked it on 15 December 2019 (after three years without a return). Source: IRS Automatic Revocation of Exemption List, posted to 13 October 2026.
How am I connected?

Bronco Booster Club Inc'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.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.
NameRole as filedSinceOn the board
Brian SackPresident2024
2 yrs
Nikolaus SendelbachTreasurer2024
2 yrs
Rebecca EichnerCompany secretary2024
2 yrs
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
Brian SackPresident5$0
Cary MadrigalVice Preside5$0
Nikolaus SendelbachTreasurer5$0
Rebecca EichnerSecretary5$0

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

About

Legal name
Bronco Booster Club Inc
EIN
205288478
Address
1767 Shumann Dr, Union Grove, WI, 53182-1787
State
Wisconsin
Activity (NTEE)
O12 Youth development
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Youth Development
Size band
3 (IRS master file code)
IRS ruling date
1 August 2024
Status
Code 01 (unconditional exemption)
Form 990 filings on record
2, latest 2025
IRS Publication 78
PC (contributions deductible)
Principal officer
Rory Esch (Form 990-N, tax year 2015)

Most connected

Longest observed on the filings

≥2years on the filingsBrian Sack
≥2years on the filingsNikolaus Sendelbach
≥2years on the filingsRebecca Eichner

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
$64k
Net assets or fund balances
$64k

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$70k$43k$27k

As filed on the IRS Form 990. US dollars.