Portfolio map · VC firm · United States

InterWest Partners portfolio map

61 startups InterWest Partners has backed in rounds we track, since 2000, grouped by their main sector. Together they have raised $5.4B. The biggest sector is Biotech, with 21 companies.

61startups backed
11sectors
$5.4Braised between them
Biotechbiggest sector

InterWest Partners's investor profile

Biotech

21

IT Services

7

Software

6

AI

6

Medical Devices

3

Telecoms

3

Internet

3

E-commerce

3

Manufacturing

3

Healthtech

3

Big Data & Analytics

3

Segment by segment

Biotech

21 startups · $3.0B raised

  1. CTCidara TherapeuticsCidara Therapeutics is a biotechnology company that specializes in the fields of healthcare and therapeutics.United States$463M
  2. CVRxCVRx is a medical device company developing implantable technology for the treatment of high blood pressure.United States$369M
  3. WelltokSilverlink Communications is a healthcare IT company that develops solutions for patient communications and engagement.United States$239M
  4. GynesonicsGynesonics develops transcervical, uterus-preserving, incision-less technologies for diagnostic and therapeutic applications.United States$214M
  5. AvedroAvedro is a medical device and pharmaceutical company advancing the science and technology of corneal cross-linking.United States$203M
  6. CelladonCelladon is a biotechnology company developing molecular therapies for the treatment of heart failure.United States$172M
  7. ReVision OpticsReVision Optics offers PRESBYLENS, a refractive surgery solution to correct vision loss by the natural aging process.United States$172M
  8. Cardiac DimensionsCardiac Dimensions is a medical device company based in Kirkland, Washington, founded in 2001.United States$150M

IT Services

7 startups · $269M raised

  1. Aria SystemsAria Systems is a software company based in San Francisco, specializing in billing and monetization solutions.United States$99M
  2. Staccato CommunicationsDoor, Mr.United States$76M
  3. Platform SolutionsPlatform Solutions develops open mainframe computers compatible with a set of data center environments and operating systems.United States$37M
  4. EpocratesEpocrates develops software that provides reference information about drugs and diseases, and diagnostic tools for healthcare professionals.United States$35M
  5. VendavoVendavo is a global provider of AI-powered pricing optimization, Configure-Price-Quote (CPQ), and rebate management software solutUnited States$21M
  6. Alt12 AppsUpdate: Alt12 Apps was acquired by The Honest Company in 2015.United States$1.3M
  7. PiggybackrPiggybackr is an online fundraising platform that teaches young people how to raise money for their teams, schools, and communitieUnited States$325K

Software

6 startups · $394M raised

  1. Pivot3Pivot3 provides easy to use and efficient solutions that are designed to meet the performance, scale, and resiliency requirements United States$229M
  2. INVIDI TechnologiesINVIDI Technologies offers Advatar, an application that delivers addressable targeted advertising and marketing messages to viewers.United States$132M
  3. CCCape Clear SoftwareCape Clear Software provides services-oriented architecture (SOA) and enterprise service bus (ESB) technology.United States$20M
  4. QuickshiftQuickShift is an all-in-one staffing platform for event based businesses created as a means to solve the unique problems that arisUnited States$5.2M
  5. Stellar LoyaltyStellar Loyalty is the first applications provider to deliver breakthrough cloud-based customer loyalty solutions.United States$5.0M
  6. AppMeshAppMesh develops business platform solutions for mobile devices.United States$3.0M

AI

6 startups · $576M raised

  1. RibbonRibbon is a one-page checkout solution enabling merchants accept payments online and make an intuitive checkout experience for customers.United States$271M
  2. CanvaCanva Pty Ltd is an Australian multinational software company based in Sydney, known for its user-friendly graphic design platform.Australia$248M
  3. Splice MachineSplice Machine is a San Francisco-based company that offers a unique Hadoop-powered, in-memory relational database management system (RDBMS).United States$47M
  4. RRealityEnginesUnited States$5.3M
  5. PogoseatPogoseat is an enterprise software company based in San Francisco, California, specializing in mobile ticketing solutions for the United States$4.6M
  6. AviateAviate is a job-discovery and preparation platform.Japan$440K

Medical Devices

3 startups · $123M raised

  1. SpirationSpiration is a developer of therapeutic medical devices for the treatment of air leaks and lung diseases.United States$81M
  2. NanostimNanostim is an early-stage medical device company working to prevent complications related to pacemakers.United States$38M
  3. ODOn Demand TherapeuticsThe Total Solution for Sight-Threatening Retinal DiseasesOn Demand Therapeutics, Inc.United States$3.8M

Telecoms

3 startups · $190M raised

  1. XirrusXirrus provides wireless networking products such as indoor and outdoor enclosures, snap-on covers, and I-beam mounting kits.United States$113M
  2. kajeetKajeet, the industry leader for safe, mobile student Internet connectivity outside the classroom, helps students succeed in school.United States$66M
  3. Venturi WirelessVenturi Wireless is the trusted leader in providing enabling platforms to service providers worldwide.United States$11M

Internet

3 startups · $24M raised

  1. CubeTreeCubeTree, a social networking platform, offers an enterprise collaboration suite for companies creating private and secure social networks.United States$12M
  2. AdsNativeAdsNative is an ad-platform that enables advertisers, publishers and application developers to buy and sell visually integrated adUnited States$11M
  3. CrowdpacCrowdpac is a non-partisan political crowdfunding startup using technology and data to help citizens engage in politics.United States$2.1M

E-commerce

3 startups · $329M raised

  1. The RealRealThe RealReal is an online marketplace for authenticated and consigned luxury goods.United States$318M
  2. LocBoxLocBox enables secure deliveries, simple returns, and product experiences for consumers.United States$10M
  3. RixtyRixty, an online payment system, allows users to spend money on online games, virtual worlds and other types of digital content.United States$1.3M

Manufacturing

3 startups · $269M raised

  1. CIC3 IoTUnited States$170M
  2. QuantanceQuantance manufactures semiconductors that increase data speed and battery life in mobile devices.United States$51M
  3. MicrofabricaMicrofabrica is an advanced additive manufacturing company based in Van Nuys, California, specializing in the high-volume productiUnited States$48M

Healthtech

3 startups · $73M raised

  1. APAvera PharmaceuticalAvera Pharmaceuticals is a specialty pharmaceutical company that acquires, develops, and commercializes pharmaceutical compounds.United States$48M
  2. LensX LasersLensX Lasers is a developer of surgical lasers used for the reparation of cataracts.United States$22M
  3. GAIN FitnessGAIN Fitness is a fitness technology company based in San Francisco.United States$2.8M

Big Data & Analytics

3 startups · $199M raised

  1. TotangoTotango is an enterprise Customer Success Software company based in Redwood City, California.United States$127M
  2. Sierra Logicsemiconductor companyUnited States$37M
  3. Periscope DataPeriscope Data is the most powerful, flexible analytics platform for data professionals and business users.United States$35M

How this map is made. Every startup here has raised money in a round we track that names InterWest Partners as an investor, the first in 2000. Each sits under its main sector, read from its rounds, and each sector shows its best-funded first; sectors with fewer than three companies are left off. Rebuilt nightly; updated 15 November 2026.

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