Maine Natural History Observatory

Maine Natural History Observatory is a registered arts & culture nonprofit based in Gouldsboro, ME, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2003 and has been operating for 23 years. Its EIN is 200718450. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 84/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $349K in annual revenue. 27 officers and directors are publicly disclosed. GiveRadar has identified 1 potential concern.

Maine Natural History Observatory's highest-paid executive, Glen Mittelhauser, received $35,650 in reported compensation in its most recent filing (2025). This figure comes straight from the organization's official filing and covers salary plus other reportable pay. Executive pay generally scales with the size and complexity of a nonprofit, so it is best read alongside the organization's revenue and what it does.

Based on official filings, Maine Natural History Observatory has $349K in annual revenue. It allocates 88% of expenses to programs and services. This is above the average of 76% for arts & culture charities in United States. Its revenue is below the peer average of $1M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Maine Natural History Observatory (MNHO) is a nonprofit research organization in Downeast Maine dedicated to documenting, studying, and sharing knowledge about Maine’s plants, animals, and ecosystems. Through scientific research, long-term monitoring, and data archiving, MNHO is working to build a comprehensive understanding of the state’s biodiversity and natural history. The Observatory collaborates with conservation organizations, volunteers, and agencies to collect high-quality biological data, develop natural history educational tools, and make natural history information accessible to scientists, educators, and the public. Its mission is to advance the conservation of Maine’s natural resources by providing reliable data and fostering a deeper appreciation for the state’s rich ecological diversity. Maine Natural History Observatory is classified as an arts & culture organization registered in United States. The organization was founded in 2003.

GiveRadar has identified 1 potential concern for Maine Natural History Observatory. Red flags are automatically detected from official data and may include high executive compensation relative to budget, low program spending, or missing financial filings. Red flags do not necessarily mean wrongdoing but indicate areas that may warrant further review before donating.

Maine Natural History Observatory is classified as an Arts & Culture organization, registered in United States. It operates as a Publicly-supported charity (509(a)(2)). By size, it is categorized as a small organization. It has $349K in annual revenue. The organization has 27 disclosed officers and directors.

Maine Natural History Observatory's EIN (Employer Identification Number) is 200718450. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.