$GTT CEO Richard Calder resigns, effective June 1 (i.e., 5 days from now). Guess he realized that rollups don& #39;t unroll well. He& #39;s now free to sell his 1,935,583 shares before they become worthless. https://www.businesswire.com/news/home/20200526005398/en/">https://www.businesswire.com/news/home...