Data update history
July 21, 2023
Posted financials
Added Form 990 for fiscal year 2022
July 3, 2023
Updated personnel
Identified 1 new personnel
February 3, 2023
Posted financials
Added Form 990 for fiscal year 2021
August 24, 2021
Posted financials
Added Form 990 for fiscal year 2019
October 22, 2020
Updated personnel
Identified 2 new personnel
Nonprofit Types
SchoolsFraternities and sororitiesChapter / child organizations
Issues
Education
Characteristics
MembershipsState / local levelNo full-time employees
General information
- Address
- PO Box 675
- Tulsa, OK 74101
- Metro area
- Tulsa, OK
- County
- Tulsa County, OK
- Website URL
- osusigmanu.com/homeĀ
- Phone
- (405) 372-3377
IRS details
- EIN
- 73-0581049
- Fiscal year end
- June
- Taxreturn type
- Form 990
- Year formed
- 1920
- Eligible to receive tax-deductible contributions (Pub 78)
- No
Categorization
- NTEE code, primary
- B83: Student Sororities, Fraternities
- NAICS code, primary
- 72131: Fraternity Houses, Sorority Houses, Residential Clubs, and Worker Camps
- Parent/child status
- Child within group exemption
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