Venture-Backed Startups

0 investors

Circulate Health provides therapeutic plasma exchange (TPE) as a turnkey clinical service that it delivers through partner clinics, supplying trained apheresis nurses, FDA-cleared equipment, standardized protocols, and operational support. The company positions TPE as a longevity and healthspan intervention, backed by a clinical trial showing reduced biological age markers.

1 investor

Circulate is a B2B platform that matches brands with 127+ verified European packaging suppliers, letting them compare sustainability data, pricing, and lead times and manage orders in one place. It provides sustainable packaging products (mailer bags, boxes, cushioning, tape) with real CO₂/LCA data and PPWR, CSRD, and EPR compliance reporting for the European market.

1 investor

Boston-based healthcare logistics company operating a HIPAA-compliant platform for non-emergency medical transportation.

2 investors

1 investor

Círculo de Belleza is an online distributor of professional beauty products in Mexico, offering brand-name items with same-day fulfillment and nationwide shipping. It serves both general consumers and stylists, providing salon pricing without minimum purchase requirements, and offers a mobile app for ordering.

2 investors

CIRCULO Capital is a real estate investment firm that acquires and manages multi-family workforce apartment housing in the US, with a portfolio of 1,466 apartment units across 11 properties. It has owned and operated over 20 properties in Texas, Oklahoma and Tennessee.

1 investor

0 investors

Circulor provides a supply chain traceability platform that tracks raw materials such as cobalt, lithium, nickel, and natural graphite, offering Digital Product/Battery Passport and Trust & Assurance solutions. It helps enterprises meet regulatory due diligence and compliance requirements, including EU Regulation 2023/1542 on batteries.

8 investors

Circulose is a Swedish textile innovation company that produces CIRCULOSE®, a raw material made from 100% recycled cotton textiles that lets fashion brands replace virgin fibers within existing supply chains. It operates a commercial-scale chemical textile-to-textile recycling plant and partners with brands and fiber producers to scale circular materials in the fashion industry.

1 investor

Circulus recycles post-consumer LDPE and LLDPE plastic film into post-consumer recycled (PCR) resins, sold under the CIRCA brand for commercial and industrial use. Its resins serve brand owners, retailers, resin producers, and converters for flexible plastic applications such as bags, shrink films, and overwraps.

1 investor

Circulus Agtech processes residual organic matter through liquid extraction and biological monitoring to produce nutrient-precise organic liquid fertilizer for commercial farms. It connects farms with suppliers of organic matter (households, schools, animal farms) as a sustainable alternative to synthetic and mined fertilizers.

1 investor

circuly provides subscription management software built for physical, consumer-durable products, enabling brands to launch and operate Product-as-a-Service, rental, and subscription models with features like recurring billing, renewals, buyouts, returns, asset tracking, and payment recovery. It integrates with shop systems, payment providers, and logistics tools, and serves retailers and manufacturers across sectors such as bikes, furniture, eyewear, consumer electronics, and medical equipment.

4 investors

0 investors

Circumvent develops precision medicines for neurodegenerative diseases, with current focus on Batten Disease and other rare neurological disorders. The company's research targets synaptic dysfunction and lysosomal pathways through investigation of the palmitoylome.

1 investor

Circunomics operates a B2B marketplace and predictive analytics platform for second-life and used batteries, matching supply and demand across battery lifecycle stages. It serves mobility OEMs, the energy sector, and recyclers to support a circular battery economy.

2 investors

Circus provides an onboarding, time-tracking and payroll platform for film and entertainment production teams, handling union and non-union worker start packs, timesheets, expense reports and talent agency management. It integrates with payroll processors like Cast & Crew, Entertainment Partners and QuickBooks and organizes multiple productions under secure workspaces.

1 investor

Cirdan builds laboratory information systems and diagnostic software for clinical and pathology laboratories, covering the full clinical pathway with real-time data analysis and AI-based workflow tools. It serves pathologists and national laboratories, offering 24/7 support and e-learning resources.

2 investors

Ciridae is an engineering firm that builds AI-native operating systems—software that runs core business operations—using proprietary kits, vertical playbooks, and production infrastructure to deploy quickly. It serves services businesses and the investors backing them.

1 investor

Cirion Technologies provides secure, low-latency fiber connectivity spanning over 105,000 km and carrier-neutral, cloud-connected data centers across Latin America. It serves hyperscalers, service providers, and enterprises running critical workloads in the region.

1 investor

Cirius Therapeutics is a clinical-stage pharmaceutical company developing therapies for patients with chronic metabolic diseases driven by insulin resistance, including Type 2 Diabetes and obesity.

0 investors

Cirkul makes a water bottle system with flavor cartridges that let users adjust the taste and intensity of their water. It sells directly to consumers through its website.

1 investor

Ciro is an AI-powered go-to-market platform that automates the research, list building, and outreach process for B2B sales and marketing teams. The platform uses natural language prompts to generate enriched prospect lists and personalized email sequences without generic templates.

2 investors

Ciroos is an AI-powered site reliability engineering (SRE) platform that performs context-aware root cause analysis across cloud, infrastructure, applications, and third-party dependencies to reduce incident duration and operational toil. It is built for enterprise engineering and SRE teams operating in complex, fragmented environments, working alongside existing observability tools rather than replacing them.

1 investor