# Proprietors Portsmouth Athenaeum

Proprietors Portsmouth Athenaeum is a Nonprofit Organization based in Portsmouth, United States.

## Overview

- **Organization type:** Nonprofit Organization
- **Headquarters:** Portsmouth, United States
- **Region:** North America

## About

The IRS Exempt Organizations Business Master File snapshot retrieved on 2026-10-14 identifies Proprietors Portsmouth Athenaeum as a tax-exempt nonprofit organization exempt under Section 501(c)(3). Its Employer Identification Number is 02-0245312. Its reported mailing city is Portsmouth, New Hampshire, United States. For the tax period ending December 2025, the retained IRS record reports total assets of USD 4,205,947. Reported income for that tax period is USD 1,369,426. Reported revenue for that tax period is USD 762,070. The reported NTEE classification code is B76Z. The IRS ruling year recorded in this snapshot is 1958. Original retained record: IRS Exempt Organizations Business Master File, eo1.csv, EIN 02-0245312. Total assets are balance-sheet assets, not assets under management. These are dated IRS records; they do not establish current finances or a present investment mandate.

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Updated: 2026-10-25T16:21:26Z

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