Based in PORTSMOUTH, NH, PROPRIETORS PORTSMOUTH ATHENAEUM operates as a Public Charity. The organization reported $762K in revenue, $631K in expenses, $4.2M in total assets for fiscal year 2025. Imperigo tracks 20 reported grant relationships connected to this organization totaling approximately $258K.
THE PORTSMOUTH ATHENAEUM IS A MEMBERSHIP LIBRARY THAT WELCOMES ALL WHO SEEK KNOWLEDGE TO EXPERIENCE CULTURE AND SHARE IN THE HISTORY OF THE PISCATAQUA REGION SO THAT TOGETHER WE MAY FIND MEANING IN THE PAST TO ILLUMINATE THE PRESENT AND THE FUTURE.
How Proprietors Portsmouth Athenaeum divides every $100 it spends, from its own Form 990 filings, averaged across 8 years.
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Showing up to 5 of 20 total records — full history available with membership.
Officer compensation and complete director data available with membership.
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $762K | $631K | $4.2M |
| 2024 | $621K | $553K | $4.0M |
| 2023 | $614K | $568K | $3.8M |
| 2022 | $510K | $475K | $3.5M |
| 2020 | $458K | $484K | $3.4M |
Between 2020 and 2025, reported annual revenue grew from $458K to $762K (+66%), with total assets most recently reported at $4.2M.
Interactive year-over-year charts and full filing details available with membership.
