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US nonprofit · EIN 237019669 · Littleton, COiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 237019669) - 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.Principal officer IRS Form 990-N (e-Postcard) - principal officer named for tax year 2023.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

Denver Field Ornithologists Inc

Donations deductible
Revenue
$66k
year to 31 December 2025
Expenses
$50k
year to 31 December 2025
Total assets
$120k
year to 31 December 2025
Net assets
$120k
assets less liabilities
Directors and trustees
14
1.8 years on average
Left since last filing
0
no seats appear to have opened
Activity
B11
Education
Filings on record
3
latest 2025
How am I connected?

Denver Field Ornithologists Inc's network

14 people1 organisationi14 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (14). 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

14 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
Charles ChaseVice President2024
2 yrs
Courtney RellaBoard of Directors2025
1 yr
Cyndy JohnsonBoard of Directors2025
1 yr
David SuddjianBoard of Directors2025
1 yr
Gary WittBoard of Directors2025
1 yr
Janet PetersBoard of Directors2025
1 yr
Katherine Holland (also filed as Kathy Holland)Treasurer2023
3 yrs
Mary GederBoard of Directors2025
1 yr
Michael FernandezBoard of Directors2025
1 yr
Patrick O'DriscollCompany secretary2024
2 yrs
Phil WaltzBoard of Directors2025
1 yr
Sharon TinianowPresident2023
3 yrs
Thomas EconopoulyTreasurer2025
1 yr
William TurnerBoard of Directors2025
1 yr
Under 5 years5 to 6 years6 years or moreShow all 14 →

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
Sharon TinianowPresident2.7$0
Charles ChaseVice President1.3$0
Kathy HollandTreasurer0.8$0
Thomas EconopoulyTreasurer2$0
Cyndy JohnsonBoard of Directors0.7$0
Courtney RellaBoard of Directors0.1$0
David SuddjianBoard of Directors24.2$0
Janet PetersBoard of Directors1.8$0
Patrick O'DriscollSecretary11.6$0
Phil WaltzBoard of Directors0.9$0
Gary WittBoard of Directors1.9$0
William TurnerBoard of Directors1$0
Michael FernandezBoard of Directors7.2$0
Susan BlansettPast President2$0
Mary GederBoard of Directors0.1$0
Jill BoiceGrants Director0.9$0
Natalie Uschner-ArroyoHawk Watch Chair10.4$0

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

Colorado roster

17 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20263025071). 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
Michael FernandezDirector
Janet PetersDirector
Carly CrowDirector
Roger KoesterDirector
Charlie ChaseVice President
Scott HammelDirector
Gary WittDirector
Ryan CordaDirector
Andrea DuranDirector
Patrick O'driscollSecretary
Victoria W Miles
Jason BidgoodPresident
David SuddjianDirector
Victoria MilesTreasurer
Jill BoiceDirector
Mary GederDirector
Kris SauckeDirector

About

Legal name
Denver Field Ornithologists Inc
EIN
237019669
Address
9550 S Everett Way, Littleton, CO, 80127-8510
State
Colorado
Activity (NTEE)
B11 Education
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Education
Size band
4 (IRS master file code)
IRS ruling date
1 October 1936
Status
Code 01 (unconditional exemption)
Form 990 filings on record
3, latest 2025
IRS Publication 78
PC (contributions deductible)
Principal officer
Katherine S Holland (Form 990-N, tax year 2023)

Most connected

Longest observed on the filings

≥3years on the filingsKatherine Holland
≥3years on the filingsSharon Tinianow
≥2years on the filingsCharles Chase
≥2years on the filingsPatrick O'Driscoll

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
$120k
Net assets or fund balances
$120k

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$55k$38k$17k

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.
Denver Field Ornithologists, 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: Colorado Secretary of State (CDOS), business entities (data.colorado.gov 4ykn-tg5h). Licence: public domain. Data last fetched 18 October 2026.
State
Colorado
Entity type
nonprofit corporation
Status
Good Standing
Formed
18 October 1990
Registered agent
Rocky Mountain RA LLC (city and state not held)

This register does not publish officers or directors.