Dubuque Arboretum Association Inc
Donations deductibleRevenue
$660k
year to 31 December 2025
Expenses
$609k
year to 31 December 2025
Total assets
$3.3m
$65k liabilities
Net assets
$3.2m
assets less liabilities
Directors and trustees
7
2.7 years on average
Staff
9
225 volunteers
Left since last filing
0
no seats appear to have opened
Officers and senior staff
6
named in Part VII
Dubuque Arboretum Association Inc's network
7 people1 organisationi7 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (7). Violet dotted lines (1) 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
7 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 11 voting members of its governing body on its latest Form 990 Part VI; we list 7 in Part VII (Part VII does not always name every voting member).| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Anna Roling | Director | 2025 | 1 yr |
| Jeff Tupper | Director | 2025 | 1 yr |
| Laurana Snyder | Director | 2025 | 1 yr |
| Mercedes Pfab | Director | 2025 | 1 yr |
| Merlin Green | Director | 2023 | 3 yrs |
| Steven Ulstad | Director | 2019 | 7 yrs |
| TIM Loeffelholz | Director | 2024 | 2 yrs |
Under 5 years5 to 6 years6 years or more
Officers and senior leadership
6 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Dawn Bandy | Vice President | 2025 |
| Jeff Mozena | President | 2025 |
| Jenna Hirtz | Executive Director | since 2023 |
| Marsha Abbott | Treasurer | 2025 |
| Sandi Helgerson | Executive Director | since 2019 |
| Wendy Knight | Company secretary | 2025 |
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.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| Jenna Hirtz | Executive Director | 40 | $77k | ||
| Merlin Green | Director | 1 | $0 | ||
| Autumn Ernzen | Director | 1 | $0 | ||
| Mercedes Pfab | Director | 1 | $0 | ||
| Sahil Kumar | Director | 1 | $0 | ||
| Jim Schumacher | Director | 1 | $0 | ||
| Steven Ulstad | Board Member | 1 | $0 | ||
| Jeff Mozena | Board Member | 1 | $0 | ||
| Laurana Snyder | Director | 1 | $0 | ||
| Marsha Abbott | Treasurer | 5 | $0 | ||
| Dawn Bandy | Chair | 5 | $0 | ||
| Anna Roling | Secretary | 5 | $0 | ||
| Tim Loeffelholz | Vice Chair | 5 | $0 |
About
- Legal name
- Dubuque Arboretum Association Inc
- EIN
- 421160989
- Address
- 3800 Arboretum Dr, Dubuque, IA, 52001-1040
- State
- Iowa
- Mission
- To become a cherished destination for all, where vibrant gardens create transformative experiences that connect people, inspire learning, and deepen appreciation for nature. (as filed on the Form 990)
- Activity (NTEE)
- C410 Environment
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Environment
- Size band
- 6 (IRS master file code)
- Formed
- 1980
- Principal officer
- Jenna Hirtz (as named on the Form 990)
- IRS ruling date
- 1 December 1981
- 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 filingsSteven Ulstad
≥3years on the filingsMerlin Green
≥2years on the filingsTIM Loeffelholz
≥1years on the filingsAnna Roling
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
- $3.3m
- Total liabilities
- $65k
- Net assets or fund balances
- $3.2m
- Contributions and grants received
- $422k
- Program service revenue
- $46k
- Employees
- 9
- Volunteers
- 225
Filed finances
1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.| Tax year | Total revenue | Total expenses | Surplus or deficit |
|---|---|---|---|
| 2023 | $713k | $568k | $145k |
As filed on the IRS Form 990. US dollars.
State registration
1 entityiBusiness-entity registers published by US states. These records are matched to this organisation by name and state, not by EIN, and are labelled as likely matches. Street addresses are not shown.Dubuque Arboretum Association, Inc. likely matchiMatched by exact name and state (and ZIP where shown). State registers do not publish EINs, so this is not a confirmed match. Source: Iowa Secretary of State, active business entities (data.iowa.gov ez5t-3qay). Licence: CC BY 4.0. Attribution: Iowa Secretary of State. Data last fetched 18 October 2026.
- State
- Iowa
- Entity type
- Revised Domestic Non-Profit
- Status
- Active
- Formed
- 20 November 1980
- Registered agent
- Jenna Hirtz (city and state not held)