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Governance Register
US nonprofit · EIN 823766844 · Green Bay, WIiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 823766844) - 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 31 December 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

Brain Center of Green Bay Inc's network

13 people2 organisationsi13 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (13). Violet dotted lines (2) 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

13 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
Byron ConwayVice President2021
5 yrs
Christine Vanden HoogenExecutive Director2022
4 yrs
Dan Koster MDMember2021
5 yrs
David Donarski MDMember2019
7 yrs
Kramer RockMember2021
5 yrs
Maida ImsirovicMember2025
1 yr
Mark HillesheimMember2025
1 yr
MEG Kress GrunwaldMember2021
5 yrs
Phillip Clampitt MD (also filed as Phillip Clampitt)Member2021
5 yrs
Richard Horak MDMember2021
5 yrs
Rolf Lulloff MDPresident2019
7 yrs
Sheri FairmanMember2021
5 yrs
Vincent Schamber (also filed as Vince Schamber)Treasurer2019
7 yrs
Under 5 years5 to 6 years6 years or moreShow all 13 →

Pay and hours

year to 31 December 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
Christine Vanden HoogenExecutive Director40$122k
Rolf Lulloff MDPresident1$0
Byron ConwayVice President1$0
Vincent SchamberTreasurer1$0
Phillip Clampitt MDMember1$0
David Donarski MDMember1$0
Sheri FairmanMember1$0
Meg Kress GrunwaldMember1$0
Mark HillesheimMember1$0
Richard Horak MDMember1$0
Maida ImsirovicMember1$0
Dan Koster MDMember1$0
Kramer RockMember1$0

About

Legal name
Brain Center of Green Bay Inc
EIN
823766844
Address
2801 S Webster Ave, Green Bay, WI, 54301-2878
State
Wisconsin
Mission
The brain center of green bay is a non-profit organization that works to maximize brain health throughout life by increasing individual and societal awareness and action utilizing collaboration, advocacy, research and education (care). (as filed on the Form 990)
Activity (NTEE)
H48 Medical research
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Medical Research
Size band
5 (IRS master file code)
Formed
2017
Principal officer
Vincent Schamber (as named on the Form 990)
IRS ruling date
1 July 2019
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2025
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsDavid Donarski MD
≥7years on the filingsRolf Lulloff MD
≥7years on the filingsVincent Schamber
≥5years on the filingsByron Conway

Latest return

year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.
Total assets
$999k
Total liabilities
$30k
Net assets or fund balances
$969k
Contributions and grants received
$164k
Program service revenue
$0
Employees
3
Volunteers
10