S&P Global Market Intelligence presents a weekly rundown of executive changes in the U.S. technology, media and telecommunications industries.
* MDC Partners Inc. named Seth Gardner COO of the company starting June 17. In this newly created role, Gardner will oversee the company's operations, real estate portfolio, IT, human resources and benefits, as well as centralized resources. He most recently was managing director, COO and chief legal officer of Carlyle Group LP's credit division.
* John Macdonald resigned as CFO of Towerstream Corp., effective June 7, to pursue another career opportunity. The fixed-wireless fiber alternative company said that its board has initiated a search to find a new CFO.
* Emerald Expositions Events Inc., an operator of business-to-business trade shows in the U.S., appointed Brian Field to be COO, effective June 1. Field previously was COO of UBM Americas, a unit of Informa PLC.
* Snap Inc. promoted Derek Andersen to CFO of the company. Lara Sweet, who was named interim CFO after the departure of Tim Stone, will now become chief people officer of Snap. In this new role, Sweet will oversee Snap's global talent acquisition and management strategies, and processes and human resource functions. Sweet will continue as chief accounting officer until a replacement is named.
* After it secured majority investment from private equity firm ParkerGale LLC, EditShare LLC named Conrad Clemson as its new CEO. Clemson most recently led Cisco Systems Inc.'s Video, Mobility and Cloud organizations. EditShare is a technology company that provides solutions for the post-production, TV and film industries.
* Former Walt Disney Co. executive Kevin Brockman has joined AT&T Inc.'s WarnerMedia Entertainment as executive vice president of global communications. In this role, Brockman will oversee all corporate and content communications initiatives globally across the company's portfolio of networks and brands. This includes HBO (US), Cinemax and TNT (US), as well as the upcoming WarnerMedia direct-to-consumer streaming service. Brockman previously was executive vice president of global communications for the Disney | ABC Television group.