Mark Weisenborn LLC

Company facts

Self-certified in SAM.gov

• Self Certified Small Disadvantaged Business
• For Profit Organization
• Veteran Owned Business

Entity structure

Corporate Entity (Not Tax Exempt)

Other NAICS codes in SAM.gov

• 541213 Tax Preparation Services
• 541219 Other Accounting Services
• 541611 Administrative Management and General Management Consulting Services
• 541720 Research and Development in the Social Sciences and Humanities
• 561990 All Other Support Services

SAM.gov registration date

Dec 24, 2025

Physical address

1221 Hermosa Ave Suite 101, Hermosa Beach, CA 90254, USA

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Jan 1, 2026.