GNCA - Genocea -1.8% as holders file to offer 21.39M shares August, 18 2020 07:32 PM Genocea Biosciences Inc. Genocea Biosciences (NASDAQ:GNCA) is 1.8% lower postmarket after a registration to offer 21.39M shares by its holders.More news on: Genocea Biosciences, Inc., Healthcare stocks news, Stocks on the move, Read more ...