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Governance Register
US nonprofit · EIN 391727792 · Milwaukee, WIiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 391727792) - 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 - 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. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Milwaukee Domes Alliance Inc's network

12 people4 organisationsi12 people and 4 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 (4) 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.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. 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
Beverly SmileyTreasurer2021
5 yrs
Ellen WilkinsonBoard Member2023
3 yrs
Jack SmileyBoard Member2021
5 yrs
Jenne HohnBoard Member2023
3 yrs
Jeremy GuthPresident2021
5 yrs
Karen Von RuedenBoard Member2021
5 yrs
Margaret WittigCompany secretary2021
5 yrs
Marianne SchmidBoard Member2021
5 yrs
Mike RoemerBoard Member2021
5 yrs
Pat HabanekBoard Member2022
4 yrs
Peter SmileyVice President2021
5 yrs
Tom MortensenBoard Member2021
5 yrs
Under 5 years5 to 6 years6 years or moreShow all 12 →

Officers and senior leadership

2 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Christa Beall DiefenbachExecutive Director (From 10/21)since 2022
Sarah SullivanExecutive Director (Thru 10/21)2022

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
Christa Beall DiefenbachChief Executive Officer40$114k
Beverly SmileyPresident3$0
Tom MortensenVice President1$0
Margaret WittigSecretary1$0
Andy HolmanTreasurer3$0
Alex ChouBoard Member1$0
Pat HabanekBoard Member1$0
Jenne HohnBoard Member1$0
Mike RoemerBoard Member1$0
Marianne SchmidBoard Member1$0
Karen von RuedenBoard Member1$0
Ellen WilkinsonBoard Member1$0
Derek ClaytonBoard Member1$0
Carter KauthBoard Member1$0
Yollande Tientcheu TchouapiBoard Member1$0
Falamak NourzadBoard Member1$0
Michael HaeberleBoard Member1$0
Hanna PaulBoard Member (Thru August 2024)1$0

About

Legal name
Milwaukee Domes Alliance Inc
EIN
391727792
Address
524 S Layton Blvd, Milwaukee, WI, 53215-1236
State
Wisconsin
Mission
The mission of milwaukee domes alliance is to provide inspirational experiences that restore connections to nature and community in a one-of-a-kind horticultural oasis at the heart of milwaukee. (as filed on the Form 990)
Activity (NTEE)
N30Z Recreation and sports
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Recreation & Sports
Size band
6 (IRS master file code)
Formed
1987
Principal officer
Christa Beall Diefenbach (as named on the Form 990)
IRS ruling date
1 July 1992
Status
Code 01 (unconditional exemption)
Form 990 filings on record
3, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥5years on the filingsBeverly Smiley
≥5years on the filingsJack Smiley
≥5years on the filingsJeremy Guth
≥5years on the filingsKaren Von Rueden

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
$3.6m
Total liabilities
$94k
Net assets or fund balances
$3.5m
Contributions and grants received
$1.1m
Program service revenue
$63k
Grants and similar paid out
$15k
Employees
29
Volunteers
159