Data update history
August 20, 2024
Posted financials
Added Form 990 for fiscal year 2023
August 11, 2024
Updated personnel
Identified 1 new personnel
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
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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