NAB hires Ray Quinones, ex-office of Rep. Darren Soto, D-Fla., as director-government relations … Arista Networks appoints Aspen Technology’s Chantelle Breithaupt as chief financial officer, effective February … NCTA board changes: Cox Communications President Mark Greatrex becomes vice chairman, succeeding Charter Communications’ retiring Executive Chairman Tom Rutledge; Charter CEO Chris Winfrey becomes board corporate system director and Comcast Cable CEO Dave Watson treasurer; Fox News Media CEO Suzanne Scott joins board as at-large program director and CommScope CEO Chuck Treadway as associate director, replacing CommScope’s Frank Drendel, retiring and stepping down from board ... Windstream promotes Joe Scattareggia to president-wholesale, and Mike Flannery to president-enterprise; Scattareggia and Flannery, who previously served as the chief revenue officers of their respective business units, succeed former Windstream Wholesale and Enterprise President Buddy Bayer, departing year-end to pursue another opportunity.

Varnish Software, caching, streaming and content delivery software solutions provider, hires Global Connect’s Fredrik Borg as CEO, succeeding Lars Larsson, moving to a new Varnish role focused on customer acquisition and strategic partnerships ... Semtech, IoT systems and cloud connectivity service provider, adds former Fly Leasing Chief Financial Officer Julie Garcia Ruehl to its board, expanding it to 12 members ... Educational Media Foundation, parent company of Christian radio networks K-LOVE and Air1, promotes David Pierce to chief media officer and elevates Matt Reynolds to CFO, and hires CoreCivic Foundation’s Bethany Davis as senior vice president-communications ... National Defense University Foundation adds Kirstjen Nielsen, former Homeland Security secretary under President Donald Trump, to its board ... BigSpring, AI revenue acceleration platform, adds Wendy Bahr, former senior vice president of Cisco’s global partner organization, as an adviser ... Mobile gaming platform Kooply adds Jill Braff, Microsoft's Xbox general manager-mobile and casual games, to its board.