MVTG(.004) 8-K Departure of Directors or Principal Officers; Election of Directors; Appointment of Principal Officers https://www.otcmarkets.com/edgar/GetFilingHtml?FilingID=12117098 https://globenewswire.com/news-release/2017/06/08/1010333/0/en/Mantra-Venture-Group-CEO-Delivers-an-Open-Letter-to-Shareholders.html