After the Bell: Dentsply, Sirona Merge; United Natural Names CFO; Novavax Up 6% on Study Data

Here are some headlines that posted after the closing bell: Dental equipment makers Dentsply International (XRAY) and Sirona Dental (SIRO) have agreed to combine in a stock-swap deal that creates a company with a implied proforma equity value of $33 billion. Dentsply gained 1.8% to $55.35 in aftermarket action, while Sirona rose 2.7% to $102. […]