GlobeNewswire Inc | Jan 20, 2021 08:00AM EST

January 20, 2021

SOUTH SAN FRANCISCO, Calif., Jan. 20, 2021 (GLOBE NEWSWIRE) -- Catalyst Biosciences, Inc. (NASDAQ: CBIO), today announced two e-poster presentations at the European Association for Haemophilia and Allied Disorders (EAHAD) Virtual Congress being held on February 3 - 5, 2021.

Poster presentation details Poster Subcutaneous Marzeptacog Alfa (Activated) is effective for Title: on-demand treatment of spontaneous bleeding in hemophilia A rats Presenter: Tom Knudsen, DVM, Ph.D., vice president of translational research, Catalyst Biosciences Program ABS027 number: Date/Time: Poster available starting at 6 pm CET on February 2, through August 5, 2021 Poster Subcutaneous Marzeptacog Alfa (Activated) is effective for Title: on-demand treatment of spontaneous bleeding in dogs with Hemophilia A Presenter: Howard Levy, M.B.B.Ch., Ph.D., M.M.M., chief medical officer, Catalyst Biosciences Program ABS028 number: Date/Time: Poster available starting at 6 pm CET on February 2, through August 5, 2021

A copy of the presentation materials can be accessed on the Events and Presentations section of the Catalyst website (www.catalystbiosciences.com) once the presentations conclude.

About Catalyst Biosciences, the Protease Medicines companyCatalyst is a research and clinical development biopharmaceutical company focused on addressing unmet medical needs in rare disorders of the complement and coagulation systems. Our protease engineering platform has generated two late-stage clinical programs, including MarzAA, a subcutaneously (SQ) administered next-generation engineered coagulation Factor VIIa (FVIIa) for the treatment of episodic bleeding in subjects with rare bleeding disorders. Our complement pipeline includes a pre-clinical program partnered with Biogen for dry age-related macular degeneration, an improved complement factor I protease for SQ replacement therapy in patients with CFI deficiency and C4b-degraders designed to target disorders of the classical complement pathway as well as other complement programs in development.

Forward-Looking StatementsThis press release contains forward-looking statements that involve substantial risks and uncertainties. Forward-looking statements include statements about Catalysts product candidates and the benefits of its protease engineering platform. Actual results or events could differ materially from the plans, intentions, expectations and projections disclosed in the forward-looking statements. Various important factors could cause actual results or events to differ materially, including, but not limited to, the risk that trials and studies may be delayed as a result of COVID-19 and other factors, that trials may not have satisfactory outcomes, that additional human trials will not replicate the results from earlier trials, that potential adverse effects may arise from the testing or use of MarzAA, including the generation of neutralizing antibodies, the risk that costs required to develop or manufacture the Companys products will be higher than anticipated, including as a result of delays in trial enrollment, development and manufacturing resulting from COVID-19 and other factors, the risk that Biogen will terminate Catalysts agreement, competition and other risks described in the Risk Factors section of the Companys quarterly report filed with theSecurities and Exchange CommissiononNovember 5, 2020, and in other filings with theSecurities and Exchange Commission. The Company does not assume any obligation to update any forward-looking statements, except as required by law.

Contact:Ana KaporCatalyst Biosciences, Inc.investors@catbio.com