Sos International LTD

Company facts

Self-certified in SAM.gov

• For Profit Organization
• Subchapter S Corporation

Entity structure

Corporate Entity (Not Tax Exempt)

NAICS codes registered in SAM.gov

• 541930 Translation and Interpretation Services Primary
• 221118 Other Electric Power Generation
• 221121 Electric Bulk Power Transmission and Control
• 221122 Electric Power Distribution
• 236210 Industrial Building Construction
• 236220 Commercial and Institutional Building Construction
• 237990 Other Heavy and Civil Engineering Construction
• 238110 Poured Concrete Foundation and Structure Contractors

Show all

• 238120 Structural Steel and Precast Concrete Contractors
• 238130 Framing Contractors
• 238140 Masonry Contractors
• 238150 Glass and Glazing Contractors
• 238160 Roofing Contractors
• 238170 Siding Contractors
• 238190 Other Foundation, Structure, and Building Exterior Contractors
• 238210 Electrical Contractors and Other Wiring Installation Contractors
• 238220 Plumbing, Heating, and Air-Conditioning Contractors
• 238290 Other Building Equipment Contractors
• 238310 Drywall and Insulation Contractors
• 238320 Painting and Wall Covering Contractors
• 238330 Flooring Contractors
• 238340 Tile and Terrazzo Contractors
• 238350 Finish Carpentry Contractors
• 238390 Other Building Finishing Contractors
• 238910 Site Preparation Contractors
• 238990 All Other Specialty Trade Contractors
• 334290 Other Communications Equipment Manufacturing
• 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing
• 424410 General Line Grocery Merchant Wholesalers
• 484110 General Freight Trucking, Local
• 484121 General Freight Trucking, Long-Distance, Truckload
• 484122 General Freight Trucking, Long-Distance, Less Than Truckload
• 485113 Bus and Other Motor Vehicle Transit Systems
• 485410 School and Employee Bus Transportation
• 493110 General Warehousing and Storage
• 519210 Libraries and Archives
• 519290 Web Search Portals and All Other Information Services
• 531110 Lessors of Residential Buildings and Dwellings
• 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)
• 531130 Lessors of Miniwarehouses and Self-Storage Units
• 531190 Lessors of Other Real Estate Property
• 531312 Nonresidential Property Managers
• 541330 Engineering Services
• 541511 Custom Computer Programming Services
• 541513 Computer Facilities Management Services
• 541519 Other Computer Related Services
• 541611 Administrative Management and General Management Consulting Services
• 541690 Other Scientific and Technical Consulting Services
• 541713 Research and Development in Nanotechnology
• 541820 Public Relations Agencies
• 541910 Marketing Research and Public Opinion Polling
• 541990 All Other Professional, Scientific, and Technical Services
• 561110 Office Administrative Services
• 561210 Facilities Support Services
• 561320 Temporary Help Services
• 561330 Professional Employer Organizations
• 561410 Document Preparation Services
• 561611 Investigation and Personal Background Check Services
• 561612 Security Guards and Patrol Services
• 561613 Armored Car Services
• 561720 Janitorial Services
• 561730 Landscaping Services
• 561790 Other Services to Buildings and Dwellings
• 561990 All Other Support Services
• 562111 Solid Waste Collection
• 562119 Other Waste Collection
• 562991 Septic Tank and Related Services
• 562998 All Other Miscellaneous Waste Management Services
• 611430 Professional and Management Development Training
• 622110 General Medical and Surgical Hospitals
• 721310 Rooming and Boarding Houses, Dormitories, and Workers' Camps
• 722514 Cafeterias, Grill Buffets, and Buffets
• 722515 Snack and Nonalcoholic Beverage Bars
• 812111 Barber Shops
• 921190 Other General Government Support
• 928110 National Security
• 928120 International Affairs

Corporate family

• Sos International LTD. Parent G8CKFWF9KYH9
  • Sos International LTD R4G8JH5CDJG2
    • Sos International LLC L3VCKMD7J585
    • Sosi-77 Construction LLC R2TGLZRZCLC6
    • Sosi-Impact LLC JLRWW4KQNM28

SAM.gov registration date

Dec 28, 2005

Physical address

1881 Campus Commons Dr #500, Reston, VA 20191, USA

Website

sosi.com

Founded

1989

Employees

1K-5K

Estimated annual revenue

$500M-$1B

Industry

1. Industrials
2. Commercial & Professional Services
3. Professional Services
4. Consulting

SIC code

87 Engineering & Management Services

Profiles

• LinkedIn
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• Facebook
• Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated May 28, 2026.