Skip to content
Governance Register
Sign inFind yourself
Find yourselfSign in
Search How it works For organisations For professionals

Edition

United KingdomIrelandUnited States (current)New ZealandCanadaAustraliaScotlandNorthern Ireland
US nonprofit · EIN 680587332 · Durango, COiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 680587332) - 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.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2010.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.State registers Colorado Secretary of State (17 October 2026).Licence US Federal Government public domain.How we handle data

Dogsters Spay & Neuter Program

Donations deductible
Revenue
$747k
year to 31 December 2025
Expenses
$591k
year to 31 December 2025
Total assets
$934k
$5k liabilities
Net assets
$929k
assets less liabilities
Directors and trustees
3
3.4 years on average
Staff
4
6 volunteers
Left since last filing
0
no seats appear to have opened
Officers and senior staff
5
named in Part VII
How am I connected?

Dogsters Spay & Neuter Program'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.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 5 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Aimee HennemanExecutive Director2023
3 yrs
Lyn O'BrienMember2023
3 yrs
Rebekah NobileVice President2023
3 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

5 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Aimee HennemanExecutive Directorsince 2020
Karen ZempelPresidentsince 2021
Lynn O' BrienBoard Membersince 2021
Sandy BruceVice-Presidentsince 2021
Stephanie DavenportTreasurer2023

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
Emily HaysStaff40$142k
Aimee HennemanExecutive Director40$97k
Karen ZempelPresident5$0
Lyn O'BrienMember2$0
Stephanie DavenportTreasurer2$0

Colorado roster

5 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20263026962). 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
Karen ZempelPresident
Aimee Henneman
Lyn O'brienMember
Aimee HennemanDirector
Stephanie DavenportTreasurer

About

Legal name
Dogsters Spay & Neuter Program
EIN
680587332
Address
3600 Main Ave Ste B, Durango, CO, 81301-4082
State
Colorado
Mission
Provide no and low cost spay and neuter and veterinry services for cats and dogs to low income families to reduce overpopulation (as filed on the Form 990)
Activity (NTEE)
D60 Animal-related
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Animal-Related
Size band
5 (IRS master file code)
Formed
1995
Principal officer
Aimee Henneman (as named on the Form 990)
IRS ruling date
1 March 2005
Status
Code 01 (unconditional exemption)
Form 990 filings on record
1, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥3years on the filingsAimee Henneman
≥3years on the filingsLyn O'Brien
≥3years on the filingsRebekah Nobile

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
$934k
Total liabilities
$5k
Net assets or fund balances
$929k
Contributions and grants received
$393k
Program service revenue
$333k
Employees
4
Volunteers
6