Sierra Oncology (ProNAi Therapeutics) ^{Priced, Nasdaq: SRRA}

We are a clinical-stage oncology company pioneering a novel class of therapeutics based on our proprietary DNA interference (DNAi) technology platform. Our vision is to be the leader in developing and commercializing a portfolio of DNAi-based therapies to deliver extraordinary therapeutic outcomes that dramatically change patients’ lives. The core of our scientific expertise is our understanding of DNAi oligonucleotides, which are rationally designed DNA sequences that modulate the transcription of oncogenes known to be involved in cancer cell survival and proliferation. Our lead DNAi product candidate, PNT2258, targets BCL2, a widely overexpressed oncogene that is an important gatekeeper of the programmed cell death process known as apoptosis and has been linked to many forms of cancer. We are pursuing a multi-faceted clinical development strategy that is designed to efficiently achieve regulatory approval and maximize the commercial opportunity of PNT2258.