Our Portfolio

Over the past decade, Alta Partners has built a strong and diversified portfolio. Alta has invested in over 150 companies, including some of the leaders in the biopharmaceuticals, medical technology, and information technology sectors.

Recent Additions

Achaogen, Inc.
South San Francisco, California,
Achaogen is a clinical stage biopharmaceutical company focused on the discovery and development of broad-spectrum antibiotics to treat multi-drug resistant bacterial infections.
Contact: Farah Champsi
ATS Medical, Inc.
Minneapolis, Minnesota
ATS Medical, Inc. is a leading developer, manufacturer and marketer of products and services focused on cardiac surgery.
Nasdaq: ATSI
Contact: Guy P. Nohra
Avid Radiopharmaceuticals, Inc.
Philadelphia, PA
Avid Radiopharmaceuticals is a leader in the development of molecular imaging products that allow for earlier and more effective detection, diagnosis and monitoring of major chronic human diseases. Avid currently has three clinical-stage molecular imaging product development programs, with the lead program utilizing a PET agent to image amyloid plaques in Alzheimer’s disease.
Contact: Ed Hurwitz
Esperion Therapeutics (spin-out)
Plymouth, MI
Esperion Therapeutics, Inc. discovers and develops therapies to prevent, treat, and reverse cardiovascular and metabolic diseases.
Contact: Alison Kiley
Excaliard Pharmaceuticals
Encinitas, California
Excaliard is a private biotechnology company focused on the development and commercialization of antisense drugs for the local treatment of scarring and other fibrotic diseases.
Contact: Farah Champsi
Immune Design Corp.
Seattle, Washington
Immune Design Corp. is a Seattle-based biotechnology company focused on developing a broad platform of novel vaccines (both therapeutic and prophylactic) for the treatment of infectious disease. The Company's technologies regulate immunity by targeting dendritic cell responses with combinations of proprietary viral vectors, TLR agonists, and adjuvants.
Contact: Ed Penhoet, Ph.D.
MAKO Surgical
Ft. Lauderdale, FL
MAKO Surgical Corp. (Nasdaq:MAKO) is a medical device company focused on marketing its advanced robotic-arm solution and its implants for minimally invasive orthopedic knee procedures known as MAKOplasty®
Sonexa Therapeutics, Inc.
San Diego, California
Sonexa Therapeutics is a clinical-stage biopharmaceutical company developing therapeutics for the treatment of Alzheimer's disease.
Contact: Robert Alexander, Ph.D.
Sutro Biopharma
Menlo Park, California
Sutro Biopharma is creating opportunities for the development of novel protein-based therapeutics and vaccines using a proprietary cell-free protein synthesis technology. Cell-free technology has the potential to overcome many of the significant limitations associated with using whole mammalian and bacterial cells for making protein-based biologics.
Contact: David Mack, Ph.D.