TJ Entrepreneurs
Discover companies founded by TJHSST alumni and backed by TJ Angels.
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Current Investments
Active portfolio companies backed by TJ Angels
DexMat
Advanced Materials
Developer of Galvorn, a high-performance carbon nanotube material for wire, cable, and lightweighting applications. Achieved 2.5x growth in 2025, a 20x increase in production capacity, and a 96% reduction in production costs. Named Trellis 2025 Startup of the Year.
TJ Angels members joined their latest oversubscribed Seed round that brought in over $5M, led by non sibi ventures with participation from Governance Partners, Tailwind Futures, BetterWay, Capital Factory, and others.
SeedCircuit Breaker Labs
AI Safety
Developer of a patent-pending agentic red-teaming platform for mental health safety in conversational AI. Circuit Breaker Labs pressure-tests AI systems using clinically informed, multi-turn simulations, semantic language variation, repeated sampling, and automated scoring to uncover latent vulnerabilities that conventional guardrails, manual testing, and LLM-as-a-judge approaches can miss.
TJ Angels members joined the company’s Pre-Seed round, supporting its mission to make continuous, independent, and auditable safety evaluation a standard layer for conversational AI products.
Pre-Seed