Home » Illinois » Darien »

Sleep Research Society

Sleep Research Society is an educational organization (also a scientific organization) in Darien, Illinois. Its tax id (EIN) is 23-7125856. It was granted tax-exempt status by IRS in August, 1971. For detailed information such as income and other financial data of Sleep Research Society, refer to the following table.


Profile of Sleep Research Society

Organization Name Sleep Research Society
Tax Id (EIN)23-7125856
Address 2510 N Frontage Rd, Darien, IL 60561-1511
In Care of Name Steven Henriksen
All tax-exempt organizations in zip code 60561
Tax PeriodAssetIncomeRevenue
December, 2013$3,802,544$631,597$628,946
December, 2015$3,742,656$620,000$613,529
December, 2016$3,791,081$2,791,469$1,167,884
December, 2017$3,842,227$859,331$857,464
December, 2018$3,950,197$1,399,383$948,727
December, 2019$3,922,659$2,803,587$1,383,449
December, 2020$3,907,388$770,221$768,607
December, 2021$4,291,686$1,027,087$1,025,545
December, 2022$4,151,949$1,064,764$1,064,300
December, 2023$4,135,557$1,213,585$1,213,585
IRS Exempt Status Ruling Date August, 1971
Exempt Status Unconditional Exemption
Deductibility Contributions are deductible
Organization's purposes,
activities, & operations
Scientific research (diseases)
Foundation Type Organization that normally receives no more than one-third of its support from gross investment income and unrelated business income and at the same time more than one-third of its support from contributions, fees, and gross receipts related to exempt purposes. 509(a)(2)
Organization Type Corporation
Organization Classification Educational 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 (all other) or 990EZ return
Private Foundation Filing Requirement No need to 990-PF return
Asset Range Reported on Form 990$1,000,000 to 4,999,999
Income Range Reported on Form 990$1,000,000 to 4,999,999
Accounting Period 12