Sean Spivey, former senior policy adviser in NTIA’s Office of Spectrum Management and also ex-FCC, joins Wilkinson Barker as a partner-telecom ... Tegna hires Artsy CEO Michael Steib as president-CEO and director, succeeding David Lougee retiring, effective Aug. 12; company also adds former Away President Catherine Dunleavy and X’s Denmark West to its board as independent directors ... Spectra7 announces the retirement of CEO Raouf Halim, with board Chair Ron Pasek becoming interim CEO ... Pax8 promotes global engineering lead Eric Stevens to chief AI officer ... Sangoma Technologies adds April Walker, ex-Salesforce vice president, to its board ... DigitalOcean cloud provider appoints Bratin Saha, former vice president-general manager, Amazon Web Services, as its chief product and technology officer.