Skip to content
Governance Register
US nonprofit · EIN 320273395 · Denver, COiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 320273395) - 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 December 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.State registers Colorado Secretary of State (17 October 2026).Licence US Federal Government public domain.How we handle data

Center for the Study of Classical Architecture Inc's network

8 people2 organisationsi8 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (8). 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

8 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.
NameRole as filedSinceOn the board
Christian ArndtBoard Member2024
2 yrs
Christopher ShieldsCompany secretary2019
7 yrs
Garrett Hardee O'NealBoard Member2025
1 yr
Michael HupfTreasurer2020
6 yrs
Phil SteinhauerBoard Member2018
8 yrs
Steve EkmanPresident2018
8 yrs
Tommy Matthews (also filed as Tom Matthews)Board Member2018
8 yrs
William MillerVice President2018
8 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Ashley JacobsChapter Administrator2023

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
Steve EkmanPresident2$0
Phil SteinhauerBoard Member2$0
William MillerVice President2$0
Christian ArndtBoard Member2$0
Tommy MatthewsBoard Member2$0
Christopher ShieldsSecretary2$0
Michael HupfTreasurer2$0
Garrett Hardee O'nealBoard Member2$0

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

Colorado roster

15 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20263025245). Titles are as filed; some entries are registered agents or custodians of records rather than board members. Source: data.colorado.gov, public domain.
NameTitle as filed
Garrett Hardee O'nealDirector
Donald RugglesEmeritus
Thomas MatthewsEmeritus
Phil SteinhauerDirector
William MillerVice President
Hupf Michael
Eric MandilEmeritus
Steve EkmanPresident
Chad CoxEmeritus
Michael HupfTreasurer
Tommy MatthewsDirector
Steve EkmanChapter President
Ashley JacobsChapter Director
Christian ArndtDirector
Christopher ShieldsSecretary

About

Legal name
Center for the Study of Classical Architecture Inc
EIN
320273395
Address
303 S Broadway B-149, Denver, CO, 80209-1558
State
Colorado
Activity (NTEE)
B60 Education
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Education
Size band
3 (IRS master file code)
IRS ruling date
1 June 1997
Status
Code 01 (unconditional exemption)
Form 990 filings on record
7, latest 2025

Most connected

Longest observed on the filings

≥8years on the filingsPhil Steinhauer
≥8years on the filingsSteve Ekman
≥8years on the filingsTommy Matthews
≥8years on the filingsWilliam Miller

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
$36k
Total liabilities
$0
Net assets or fund balances
$36k

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$52k$48k$4k

As filed on the IRS Form 990. US dollars.