First Amended Disclosure Statement Filed by Genocea Biosciences, Inc.

Genocea Biosciences, Inc. is a biopharmaceutical company. The Company is engaged in discovering and developing cancer immunotherapies using its proprietary ATLAS platform. The ATLAS platform can profile each patient's CD4+ and CD8+ T cell immune responses to every potential target or antigen identified by next-generation sequencing of that patient's tumor. ATLAS zeroes in on both antigens that activate anti-tumor T cell responses and inhibitory antigens, or Inhibigens, that drive pro-tumor immune responses. Its GEN-009 is an investigational neoantigen vaccine delivering adjuvanted synthetic long peptides from ATLAS-identified neoantigens. The Company has a license agreement with Harvard College (Harvard), granting the Company a sublicensable license to one patent family, to develop, make, use, market licensed products, and perform licensed services related to the ATLAS discovery platform.