I don't know anything about TPE but it appears that they didn't meet a target. A lot of companies have been ruthlessly punished for not meeting expected targets:
From the TPE 2017 Results and 2018 Outlook report:
2. 2H 2017 operating EBITDA of -$3.6m fell short of target.
3. Key drivers of the shortfall were: a. External straw delays: customs and shipping delays on remaining tolling contract volume and Hungary straw. b. Additional operating costs: increased labour in anticipation of greater straw volumes through 4Q 2017 which didn’t eventuate. c. Lower Contract Manufacturing Organisation (‘CMO’) volumes: CPO tablets into the UK. d. Unplanned plant downtime: Norway API production downtime due to unresolved maintenance issue from prior owner impacted first 6 weeks post acquisition.
