Ribbon Communications names Juniper Networks’ Dan Redington executive vice president-sales, Americas, succeeding Steven Bruny, retiring in early 2023 ... Astra Space moves product engineering executive Giovanni Greco to newly expanded role in charge of launch system delivery; program management executive Jonathan Donaldson now accountable for leading Astra spacecraft engine delivery; Benjamin Lyon resigns as chief engineer and executive vice president-operations and engineering ... Opendoor Technologies, e-commerce platform for residential real estate transactions, promotes Chief Financial Officer Carrie Wheeler to CEO, moving co-founder and CEO Eric Wu to new role as president-marketplace; Opendoor also adds Wheeler to its board, expanding it to nine members, and names Chief Accounting Officer Christy Schwartz interim CFO; President Andrew Low Ah Kee resigns, will remain advisor through Q1.