Zealand Pharma A/S exercises its authorization granted by its extraordinary general meeting held on July 31, 2017 https://www.globenewswire.com/news-release/2017/08/08/1081934/0/en/Zealand-Pharma-A-S-exercises-its-authorization-granted-by-its-extraordinary-general-meeting-held-on-July-31-2017.html company announcement