Stack21 Solutions LLC

Company facts

Self-certified in SAM.gov

• For Profit Organization
• Limited Liability Company

Entity structure

Corporate Entity (Not Tax Exempt)

Other NAICS codes in SAM.gov

• 522310 Mortgage and Nonmortgage Loan Brokers
• 541110 Offices of Lawyers
• 541199 All Other Legal Services
• 541211 Offices of Certified Public Accountants
• 541214 Payroll Services
• 541219 Other Accounting Services
• 541511 Custom Computer Programming Services
• 541512 Computer Systems Design Services

Show all 21

• 541513 Computer Facilities Management Services
• 541519 Other Computer Related Services
• 541612 Human Resources Consulting Services
• 541614 Process, Physical Distribution, and Logistics Consulting Services
• 541618 Other Management Consulting Services
• 541690 Other Scientific and Technical Consulting Services
• 541930 Translation and Interpretation Services
• 541990 All Other Professional, Scientific, and Technical Services
• 561110 Office Administrative Services
• 561499 All Other Business Support Services
• 561611 Investigation and Personal Background Check Services
• 611430 Professional and Management Development Training
• 611710 Educational Support Services

SAM.gov registration date

Mar 30, 2026

Physical address

169 US-9W #1, Haverstraw, NY 10927, USA

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Apr 13, 2026.