They agreed to return the equivalent value of 3.1 million Tesla stock options, according to the court filing. Last week, reports surfaced that Musk even planned a lavish glass house for himself near Tesla headquarters in Austin, Texas, worth millions of dollars which prompted an internal investigation by the electric car-maker's board over alleged improprieties. �� Tesla Directors To Return USD 735 Million to Company As They ‘Overpaid Themselves’.