# William F Harnisch Foundation Inc

William F Harnisch Foundation Inc is a Private Foundation based in East Quogue, United States.

## Overview

- **Organization type:** Private Foundation
- **Headquarters:** East Quogue, United States
- **Region:** North America

## About

The IRS Exempt Organizations Business Master File snapshot retrieved on 2026-10-14 identifies William F Harnisch Foundation Inc as a private grantmaking foundation exempt under Section 501(c)(3). Its Employer Identification Number is 11-3353576. Its reported mailing city is East Quogue, New York, United States. For the tax period ending December 2024, the retained IRS record reports total assets of USD 5,449,646. Reported income for that tax period is USD 7,099,404. The reported NTEE classification code is T20Z. The IRS ruling year recorded in this snapshot is 1997. Original retained record: IRS Exempt Organizations Business Master File, eo1.csv, EIN 11-3353576. 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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