Venture-Backed Startups

CiRC Biosciences develops cellular reprogramming therapies that convert fibroblasts directly into specific neurons and cell types lost in degenerative eye and brain diseases. Its programs target dopaminergic neurons in Parkinson's disease, GABAergic interneurons in refractory epilepsy, and orexin neurons in treatment-resistant narcolepsy, building on prior retinal cell replacement work.

2 investors

0 investors

Circa provides software tools for event planners and managers to organize, coordinate, and execute events. The platform helps event professionals manage logistics, timelines, and attendee experiences.

2 investors

Circa was a company focused on accelerating renter wealth; it has since joined Stake to continue that mission.

3 investors

Circa Scientific develops cardiac medical devices for electrophysiologists and interventional cardiologists, including esophageal temperature monitoring and transseptal and pericardial access solutions. Its products aim to reduce procedural complications and improve patient outcomes.

0 investors

Circada develops circadian lighting products and systems that adjust light intensity, color, and wavelengths to align with the natural progression of the sun, aiming to support the body's circadian rhythm and health outcomes. The company also conducts research in clinical settings such as intensive care patient recovery and neuro-rehabilitation.

1 investor

Circadence develops gamified, cloud-based cybersecurity training and awareness platforms for individuals, teams, and government agencies. The company creates high-fidelity virtual simulations and cyber ranges aligned with NIST/NICE frameworks for hands-on learning.

2 investors

Circadia develops an FDA-cleared contactless patient monitoring platform using AI and hardware to enable early detection of patient health changes and reduce rehospitalizations. The platform serves healthcare providers and hospitals seeking to shift from reactive to predictive care delivery.

3 investors

Circadian provides virtual, at-home specialty care teams that coordinate treatment across sleep, endocrinology, cardiology, and pulmonology for patients with chronic cardiometabolic conditions. It combines at-home diagnostics, remote monitoring, and adherence programs, working with primary care providers, payers, and employers in the US.

1 investor

0 investors

Circadian Positioning Systems develops circadian rhythm-based solutions aimed at optimizing human performance in mission-critical scenarios.

1 investor

Circadian Risk offers a physical security risk and compliance assessment platform that lets organizations monitor risk across multiple locations, run assessments against any compliance standard, and manage remediation from a single dashboard. It serves security teams and consultants across industries such as grocery distribution and financial institutions, providing vulnerability, threat, and impact analysis plus reporting and corrective action tools.

2 investors

0 investors

Circadiance develops and manufactures remote patient monitoring products with cloud-based solutions that connect healthcare professionals to patients, including tools that help premature infants leave the hospital sooner. It also makes PAP and non-invasive ventilation products for people with sleep-disordered breathing and NICU patients, serving hospitals and homecare companies.

1 investor

Circana provides technology, AI, and data analytics through its Liquid Data platform to consumer packaged goods companies, durables manufacturers, and retailers. Its predictive analytics help clients measure market share, understand consumer behavior, and analyze media campaign effectiveness across CPG, general merchandise, and retail industries.

1 investor

Circe uses a proprietary aerobic gas fermentation process to convert point-source CO₂ emissions into carbon-negative molecules that are drop-in equivalents of ingredients used in food, chemical, and fuel manufacturing. It serves industrial manufacturers across sectors and operates a pilot gas fermentation plant.

6 investors

0 investors

CIRCE Scientific develops patented ingredient synergies and formulations focused on cellular and systemic resilience, working with clients to co-create products for supplements, functional foods, cosmetics, and animal care. It serves brands in the health, longevity, and dermocosmetics markets, with applications spanning UV/environmental protection, sports recovery, and veterinary use.

1 investor

0 investors

Circeus acquires and holds B2B mission-critical software companies as a permanent home, applying an AI platform and shared back-office functions (finance, HR, tax, data) to grow them. It targets founder-led SaaS businesses with recurring revenue and provides operational support, add-on acquisition capital, and go-to-market help.

5 investors

0 investors

Sort Express is a 3D puzzle game where players organize, match, and clear real-world objects across progressively harder levels.

1 investor

0 investors

Circle Asia is a Singapore-based company building a digital banking platform aimed at consumers across emerging Southeast Asian markets. Its services center on payments and access to credit for retail users.

1 investor