Skip to content
Governance Register
US nonprofit · EIN 200718450 · Gouldsboro, MEiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 200718450) - 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 tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 30 June 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 (us-approach-v4-clean). 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

Maine Natural History Observatory's network

7 peoplei7 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (7). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

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.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 8 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Bob DeforrestDirector2019
7 yrs
Glen MittelhauserTreasurer/Ex2019
7 yrs
Jacob Van De SandeDirector2019
7 yrs
Jill WebberDirector2022
4 yrs
Jordan ChalfantCompany secretary2022
4 yrs
Megan McOskerDirector2019
7 yrs
Rich MacdonaldPresident2019
7 yrs
Under 5 years5 to 6 years6 years or more

Pay and hours

year to 30 June 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
Glen MittelhauserTreasurer/Ex40$38k
Rich MacdonaldPresident$0
Jordan ChalfantSecretary$0
Megan McOskerDirector$0
Jacob van de SandeDirector$0
Bob DeforrestDirector$0
Jill WebberDirector$0

About

Legal name
Maine Natural History Observatory
EIN
200718450
Address
317 Guzzle Rd, Gouldsboro, ME, 04607-3128
State
Maine
Mission
Natural history observation (as filed on the Form 990)
Activity (NTEE)
A80 Arts, culture and humanities
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Arts, Culture & Humanities
Size band
4 (IRS master file code)
Principal officer
Glen Mittelhauser (as named on the Form 990)
IRS ruling date
1 May 2004
Status
Code 01 (unconditional exemption)
Form 990 filings on record
7, latest 2025
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsBob Deforrest
≥7years on the filingsGlen Mittelhauser
≥7years on the filingsJacob Van De Sande
≥7years on the filingsMegan McOsker

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$268k
Total liabilities
$2k
Net assets or fund balances
$266k
Contributions and grants received
$135k
Program service revenue
$214k
Employees
8
Volunteers
25

Filed finances

2 yearsiTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$349k$274k$75k
2023$387k$233k$154k

As filed on the IRS Form 990. US dollars.