Kazuhiro Tsuga, a senior managing director at Panasonic, will replace Fumio Ohtsubo effective April 1. Ohtsubo will become chairman of the board, replacing Kunio Nakamura who will become executive advisor. While the changes are effective April 1, they will be submitted for and subject to approval at the company’s ordinary general meeting of shareholders to be held on June 27, 2012 … Dev Mukherjee, who joined Sears as president of major appliances in 2010, is “transitioning out of the company,” a Sears spokesman confirmed for TWICE. A successor is expected to be announced within the next few weeks. Joe Tautges, VP, chief financial officer and COO of Sears’ home appliance division, will play an active role in the transition as Mukherjee winds down and a new manager is brought in, the spokesman said. Mukherjee was Sears Holdings third appliance chief in four years … Robert Stevens, Best Buy’s chief technology officer and founder of Geek Squad, has left the retailer. Stephens is leaving the company. He founded Geek Squad, which began as a Minneapolis PC repair company in 1994 and was acquired by Best Buy eight years later as an entrée into the services business. He will continue to work with Best Buy on a project-by-project basis, CEO Brian Dunn said … Lee Applbaum, RadioShack’s chief marketing officer and an executive VP title since Sept. 2008, “is no longer associated with the company.” No reason was given for his departure and the news came in a RadioShack filing with the Securities & Exchange Commission (SEC). Brought in by former CEO Julian Day, Applbaum led the chain’s “The Shack” re-branding effort, which sought to attract a new generation of customers while retaining the company’s heritage … Kathleen Marini has joined the Home Technology Specialists of America (HTSA) as marketing director, a newly created position. Marini joins the buying group for integrators, installers and specialty A/V dealers from Panduit, a networking and electrical solutions firm, where she was global marketing manager. She also has held channel and marketing director posts with Alcatel, NEC and 3Com … Dave Robison, CEO of DSI Systems, has resigned from the distributor but will remain on the distributor’s board and be “heavily involved in the overall direction of the company,” according to a prepared statement. Doug Robison will assume the title of president and CEO, adding these responsibilities to his current duties. Separately, Jerry Satoren has been promoted to executive VP of CE Sales and will have full responsibility for DSI’s CE business, including sales, merchandising, and vendor relationships. He will continue reporting to Doug Robison … Danielle Kohler joined D& M Holdings in the newly created position of North America product manager for headphones.