DXCM - DexCom promotes technology chief Leach to COO August, 31 2022 05:06 PM DexCom Inc. DexCom ( NASDAQ: DXCM ) said Wednesday it promoted Jake Leach to the role of COO. Leach most recently served as chief technology officer at DXCM since 2018. For further details see: DexCom promotes technology chief Leach to COO