Conatus Pharmaceuticals completes the second closing of its Series B Private Placement Financing

SAN DIEGO – Conatus Pharmaceuticals Inc. announced an additional $7.5 million investment by MPM Capital of South San Francisco, CA. The Series B Preferred Stock financing is now closed with a total of $32.5 million of capital raised. The first closing was completed in early February, 2011. Jim Scopa from MPM will join the Conatus Board of Directors.

Conatus will use the proceeds to advance the clinical development of CTS-1027, a novel clinical-stage drug candidate the Company licensed from F. Hoffman-La Roche, Ltd. and the subject of multiple Phase 2 clinical trials in hepatitis C (HCV)-infected patients.

“We’ve watched the progress at Conatus and believe that CTS-1027 could make a significant difference in the treatment of HCV infection. MPM also expects to provide other resources, both strategic and clinical, to assist the management team in the execution of its business plan”

 said Jim Scopa, Managing Director of MPM Capital.

“The additional investment by MPM enables Conatus to move ahead assertively with its confirming Phase 2b clinical trial of CTS-1027 started in January 2011 as well as allowing for a thorough evaluation of the development compounds of Idun Pharmaceuticals acquired in 2010,”

said Steven J. Mento, Ph.D.

About Conatus Pharmaceuticals Inc.

Conatus Pharmaceuticals Inc. is a privately-held biopharmaceutical company engaged in the development of innovative human therapeutics to treat liver disease and oncology. Conatus’ lead drug candidate, CTS-1027 is in multiple Phase 2 clinical trials for the treatment of hepatitis C virus (HCV). Conatus was founded by the executive management team of Idun Pharmaceuticals in July 2005 following the sale of Idun to Pfizer. For additional information, please visit www.conatuspharma.com.

About Gilde Healthcare Partners

Netherlands-based Gilde Healthcare Partners (www.gildehealthcare.nl) is a transatlantic venture and growth capital firm focused on private healthcare technologies and services. It has over €400 million under management and is actively looking to lead new investments in therapeutics, diagnostics, medical devices and services. Gilde successfully builds healthcare businesses across Europe and US, investing up to €15 million in a single portfolio company. By investing in companies with clear achievable business models, Gilde has used its financial resources and network to create significant value for both its investors and the entrepreneurs it backs. For a list of Gilde’s portfolio companies please visit the website.

Gilde Healthcare II is supported by the European Communities Growth and Employment Initiative, MAP - ETF Start up Facility.