TULSA, OK — Gateway First Bank has appointed Melissa Bogle director of corporate communications, as which she will be responsible for defining and executing the corporate communications strategy, including internal and external communications across traditional, digital and social media platforms. She previously held senior roles at GableGotwals and Southcrest Hospital.

BOSTON — Alexion Pharmaceuticals has named Tanisha Carino executive VP and the company’s first chief corporate affairs officer. Carino will oversee the creation of a newly integrated corporate affairs function that encompasses Alexion’s corporate affairs activities. She previously led the US policy function for GlaxoSmithKline and spent more than a decade with Avalere Health, where she founded the Center on Evidence Based Medicine.

NEW YORK — Doretha (DeDe) Lea has been named executive VP, global public policy and government relations of ViacomCBS, effective upon closing of the proposed merger between Viacom and CBS. In her role, Lea will oversee all government affairs and public policy work for the combined company domestically and internationally. She has served as executive VP, global government affairs of Viacom since 2013, having previously served as executive VP, government relations beginning in 2005.