Main Street Capital — Full Portfolio

7 tracked investments · listed companies and verified rows first

CBT Nuggets provides online IT training courses and certifications covering topics from entry-level to professional, with features including virtual labs, practice exams, and interactive learning tools.

Developer ToolsEdTechEnterprise SoftwareSaaS

hCaptchahcaptcha.com in 𝕏

hCaptcha builds privacy-preserving security systems that use deep learning and visual machine learning to protect online systems from bots and modern threats, offering an alternative to security tools that track users.

AI & Machine LearningCybersecuritySaaS

Northwindnorthwindskin.com in 𝕏Mar 2025 · $700MDefunct

Northwind operates a telemedicine platform connecting patients with dermatologists for diagnosis and treatment of chronic skin conditions including psoriasis and atopic eczema, offering customized treatment plans and a line of proprietary topical medications with ongoing follow-up care.

HealthtechLos Angeles, US

Johannes Vermandois(Founder)in

Co-investorsBonnier Capital Y Combinator Sixth Street

Televerdeteleverde.com in 𝕏

Televerde provides outsourced B2B sales development, demand generation, and customer retention services delivered by teams of formerly incarcerated women.

Enterprise SoftwareImpact & Social GoodMarketing TechSaaSSales Tech

Vince Barsolo(Chief Executive Officer)in Michelle Cirocco(Chief Social Responsibility Officer)in Alicia Rasta(Vice President and Head of Global Sales)inEric Crawford(Vice President & Corporate Controller)Yolanda Slan(Chief People Officer)Justin Vogel(Global General Manager)in

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Barfly VenturesGRTKMC

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.