S28 Capital

Biotech company developing AI-powered multiomics blood tests for early cancer detection. Its platform analyzes cell-free DNA, methylation patterns, and protein biomarkers from routine blood draws to screen for cancers in their earliest stages. Lead product SimpleScreen targets FDA approval for colorectal cancer screening.

Teleport is the infrastructure identity company, providing on-demand, least-privileged access to infrastructure on a foundation of cryptographic identity and zero trust. The platform integrates access management, zero trust networking, and identity security into a single solution, replacing passwords and secrets with true identity for engineers and services. Previously known as Gravitational, the company was founded by the Mailgun team (YC W11, acquired by Rackspace).

Clerk provides a complete suite of embeddable authentication UIs, flexible APIs, and admin dashboards for user management. The platform handles sign-up, sign-in, multi-factor authentication, organization management, and session handling, allowing developers to add secure auth to their applications in minutes instead of months. Clerk integrates natively with Next.js, React, and other popular frameworks.