›Portfolio Companies

Past, Present and Future Leaders

InterWest is proud and privileged to partner with visionary management teams who are shaping the future of Information Technology and Healthcare. The companies they have started are vital parts of the portfolio of industry-leading startups that InterWest has helped over the last four decades.

Our Companies

Early stage IT and Healthcare Investing




Fri, 06/22/2012 - 09:21 -- anonghost

Obalon is a medical device company based in Carlsbad, CA that is developing a minimally invasive device to treat obesity.


Fri, 06/15/2012 - 11:14 -- anonghost

Founded in July 2009, Alt12 apps is a software company committed to creating compelling and impactful mobile apps for women. It combines mobile, social and community features that bring women and families together and provides value every important stage of a woman's life. Based in San Francisco, Alt12 derives its name from the keyboard shortcut Alt-1-2, which produces the female symbol.


Fri, 06/15/2012 - 10:56 -- anonghost

Founded in 1987, Glycomed developed pharmaceuticals based on complex carbohydrates. After a successful IPO in 1991, the company was merged with Ligand Pharmaceuticals in a stock swap in 1995.

Quantum Health Resources

Fri, 06/15/2012 - 10:49 -- anonghost

Quantum established itself as a provider of mail order and in-the-home services and support to hemophiliacs and their families, then extended its business and service model to those afflicted by other chronic genetic disorders, such as cystic fibrosis, sickle cell anemia, Crohn's disease, and alpha-1 anti-trypain deficiency. Quantum was acquired by Olsten in 1996.

Presidium Holdings

Fri, 06/15/2012 - 10:48 -- anonghost

Presidium was a health care service company focused on the workers' compensation and disability marketplace. It offered a complete set of claims management and managed care services that allowed self-insured, mid-sized companies to manage their workers' comp and short-term disability claims cost effectively and with good outcomes. The company was acquired by Aon Services in 1999.


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