Gustavus & Louise Pfeiffer

Gustavus & Louise Pfeiffer is a scientific organization in Wilmington, Delaware. Its tax id (EIN) is 13-6086299. It was granted tax-exempt status by IRS in February, 1952. For detailed information such as income and other financial data of Gustavus & Louise Pfeiffer, refer to the following table.


Profile of Gustavus & Louise Pfeiffer

Organization Name Gustavus & Louise Pfeiffer
Tax Id (EIN)13-6086299
Address Foundation Source 501 Silverside Rd, Wilmington, DE 19809
In Care of Name Foundation Source
All tax-exempt organizations in zip code 19809
Tax PeriodAssetIncomeRevenue
December, 2013$26,568,174$1,191,206$0
December, 2015$24,513,142$4,189,391$0
December, 2016$24,760,515$2,308,660$0
December, 2017$23,483,440$5,229,923$0
December, 2018$20,614,620$3,056,439$0
December, 2019$22,129,055$3,812,869$0
December, 2020$21,798,051$3,627,202$0
December, 2021$19,275,018$6,363,727$0
December, 2022$15,514,522$1,614,228$0
December, 2023$17,863,505$933,643$0
IRS Exempt Status Ruling Date February, 1952
Exempt Status Unconditional Exemption
Deductibility Contributions are deductible
Organization's purposes,
activities, & operations
Gifts, grants, or loans to other organizations
Foundation Type Private non-operating foundation
Organization Type Corporation
Organization Classification Scientific Organization
Affiliation Independent - This organization is an independent organization or an independent auxiliary (i.e., not affiliated with a National, Regional, or Geographic grouping of organizations).
Primary Return(s) Required to File 990 - Not required to file (all other)
Private Foundation Filing Requirement Need to file 990-PF return
Asset Range Reported on Form 990$10,000,000 to 49,999,999
Income Range Reported on Form 990$500,000 to 999,999
Accounting Period 12