Tesla has $8 Billion worth of shareholder value in the past five days, amounting to a very public meltdown for CEO Elon Musk. Tesla shares have fallen 8.9 percent today

In the interview with New York Times Musk remarks that the last three years with the company has been “excruciating” and “the most difficult and painful” of his career. He also notes that he and members of the board are slated to meet with SEC officials next week following its investigation and subsequent subpoena after making his privatization tweets. NYT reported that the board is concerned about Musk, his use of Ambien, and his recreational drug activities, which could be fueling the troublesome tweets he’s been making.