May 7 (Reuters) - Sierra Oncology Inc SRRA.O :
* SIERRA ONCOLOGY - FILED PROSPECTUS SUPPLEMENT WITH SEC IN CONNECTION WITH OFFER, SALE OF AN ADDITIONAL $50 MILLION OF SHARES PURSUANT TO SALE AGREEMENT
May 7 (Reuters) - Sierra Oncology Inc SRRA.O :
* SIERRA ONCOLOGY - FILED PROSPECTUS SUPPLEMENT WITH SEC IN CONNECTION WITH OFFER, SALE OF AN ADDITIONAL $50 MILLION OF SHARES PURSUANT TO SALE AGREEMENT