Our Portfolio

Over the past decade, Alta Partners has built a strong and diversified portfolio. Alta has invested in over 180 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.
ATS was acquired by Medtronic in August of 2010.
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 was acquired by Eli Lilly (NYSE: LLY) in 2010.
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®
Contact: Dan Janney
Pathwork Diagnostics
Redwood City, CA
Pathwork Diagnostics Inc. is a privately held company that develops and delivers innovative molecular diagnostics for oncology. Pathwork's Tissue of Origin Test identifies the source of cancers that are difficult to classify and increases oncologists’ confidence in their treatment approaches. It is the only FDA-approved molecular diagnostic test for tissue of origin.
Contact: David Mack, 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.