On 07 Dec 2017 Dart closed the doors on Dart Neuro Science in San Diego laying off all 265 employees. Without income to write the loss off against Eastern may have simply looked at there situation and said "maybe this security we have for the outstanding LOC is not as valuable to us now than it was when we moved forward with the loan a number of years ago". Dart may have been looking at this situation for many months as it is unlikely that the decision to close DNS was made overnight.

Just a thought that popped into my head after reading chicagoest's post on the new US tax legislation that recently pasted into law.

tada