KaloBios Initiates Phase 1/2 Trial of Humaneered™ Monoclonal Antibody KB001 for Treatment of Pseudomonas Infections in Mechanically Ventilated Patients: May 19, 2008

KaloBios Expands Senior Management Team: May 5, 2008

KaloBios Completes Patient Dosing in its U.S. Phase 1 Trial of Its Third Drug Candidate, KB003: April 28, 2008

KaloBios Initiates Phase 1/2 Trial of Humaneered™ Monoclonal Antibody KB001 for Treatment of Pseudomonas Infections in Cystic Fibrosis Patients: March 31, 2008

KaloBios Initiates Phase 1/2 Trial of KB002 Engineered Monoclonal Antibody in Persistent Asthma: March 10, 2008

KaloBios Strengthens Development Expertise with Additions to Senior Management Team: January 29, 2008

KaloBios Elects Denise M. Gilbert, Ph.D. to the Board of Directors: January 28, 2008

Previous Announcements
KaloBios Raises $20 Million in Series C Financing: July 23, 2007

KaloBios Initiates a U.S. Phase 1 Study of Its Second Drug Candidate, KB001: June 11, 2007

KaloBios Bolsters Development Expertise with New Chief Medical Officer
and SVP, Regulatory Affairs, Quality and Project Management
: June 8, 2007

KaloBios Licenses Humaneering™ Technology to Major Pharmaceutical Company: April 23, 2007

KaloBios Commences Clinical Trial of Novel Antibody Rheumatoid Arthritis Drug Candidate: November 9, 2006

KaloBios Pharmaceuticals Appoints David W. Pritchard as President and Chief Executive Officer: October 12, 2006

KaloBios Collaborates to Engineer Human Antibody Therapeutic Drugs,
Successful completion of first Humaneering™ program and commencement of a broader agreement: June 1, 2006

KaloBios Pharmaceuticals Raises $20 Million in Private Equity,
Led by MPM Capital and GBS Ventures: March 16, 2005

KaloBios In-Licenses Rheumatoid Arthritis Drug from the Ludwig Institute for Cancer Research: July 22, 2004

KaloBios Pharmaceuticals In-Licenses Antibody from UCSF to Prevent and Treat Pseudomonas Infections: June 2, 2004

KaloBios and Celscia Therapeutics Announce Merger: January 12, 2004

In Vivo Article: December 19, 2003

KaloBios Completes $4 Million in Seed Funding from Sofinnova Ventures and Alloy Ventures: June 24, 2003

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