September 22, 2016 Mr. Habib J. Dable Madison, NJ 07940 Dear Habib:Employment Agreement • September 27th, 2016 • Acceleron Pharma Inc • Biological products, (no disgnostic substances) • Massachusetts
Contract Type FiledSeptember 27th, 2016 Company Industry JurisdictionThis letter agreement (“Agreement”) sets forth the terms and conditions of your employment with Acceleron Pharma Inc. (the “Company”), effective as of no later than December 26, 2016 (such date you actually commence employment, the “Start Date”). The Company prefers that the Start Date be October 15, 2016, but agrees to target December 1, 2016 in the event you are not reasonably able to commence employment as of October 15, 2016.