Shares of Okta Inc. OKTA, -3.20% rallied 3.2% in premarket trading Thursday, after the identity software company said it would lay off about 7% of its workforce, as part of a restructuring aimed at improving efficiencies and profitability. The company disclosed in an 8-K filing with the Securities and Exchange Commission that the restructuring involves cutting 400 full-time jobs. That will result in restructuring charges of $24 million in the fiscal fourth quarter for employee severance and benefits costs, ...