Brightstar Corp., a $5.7 billion Miami-based wireless distribution company, appointed Thomas Seifert CFO and executive vice president. He replaces Dennis Strand, who was named president of a new unit, Brightstar Financial Services. Seifert recently was CFO and senior vice president at Advanced Micro Devices. Previously he was CFO and COO at Qimonda, where he played a role in the company's IPO. Earlier he was group vice president and general manager of the memory rroducts group at Infineon Technologies and CEO and COO at Wireline Communications.

Jim Leddy of JetblueJetBlue, the New York-based U.S. airline with $4.5 billion in annual revenue, appointed James Leddy treasurer and vice president. This position was previously held by Mark Powers, who is now JetBlue's CFO. Leddy, pictured at left, joins JetBlue from NBCUniversal, where he was senior vice president of treasury and cash management. Earlier, he worked at General Electric, Measurisk and the Industrial Bank of Japan.

Henry Schein, an $8.5 billion healthcare products and services provider in Melville, N.Y., named Carolynne Borders vice president of investor relations. Borders recently served as vice president of investor relations and corporate communications for a semiconductor products design company. Earlier she was a senior associate at the Financial Relations Board. She was also co-founder and executive vice president of LI Invest, a former not-for-profit organization in Long Island, N.Y.

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Wade Davis of ViacomViacom, the $4 billion entertainment company, named Wade Davis CFO. He succeeds Jimmy Barge, who is leaving New York-based Viacom to pursue other interests. Wade, 40, at right, joined Viacom in 2005 as senior vice president of mergers and acquisitions and later worked in strategic planning and corporate development. In his time with the company, Davis has led ventures including partnerships with Microsoft and Unilever and the acquisition of DreamWorks, the Teenage Mutant Ninja Turtles and Atom Shockwave. Previously he spent more than 10 years as an investment banker at Wasserstein Perella and Lazard Freres & Co.,  served as executive vice president at Americas Choice, and co-founded AdvancedPath Academics, a technology-based center that educates high school dropouts.

Keyera, a $2.5 billion natural gas midstream business based in Calgary, Canada, appointed Steven Kroeker CFO and vice president. He succeeds Dean Setoguchi, who resigned to pursue other interest. Kroeker most recently served as Keyera's vice president of corporate development. From 2004 to 2006, he was a director in the energy group of Scotia Capital Investment Banking.

Children's Place, a $1.7 billion children's apparel retailer that is based in Secaucus, N.J., named Michael Scarpa CFO and executive vice president. He succeeds Steven Baginski, who is leaving to pursue other opportunities. Scarpa, 56, most recently was CFO and COO at Talbots, and earlier spent 25 years at Liz Claiborne, where his final position was COO. Scarpa began his career at Maidenform and Krementz and Co.

Eric Harkness of GATXGATX Corp., a Chicago-based railcar leasing company with $1.3 billion in 2011 revenue, said its chief risk officer, Eric Harkness, will take on the additional title of treasurer.. Harkness, 39, joined GATX in 2007 as a senior investment risk officer and later became vice president and chief risk officer.

Regis Corp., a $563 million hair care services company based in Minneapolis., named Steven Spiegel CFO and executive vice president. He replaces Brent Moen, who is resigning. Spiegel most recently was vice president of finance and corporate controller at Unilever Group. He joined Unilever when it acquired Alberto Culver, and was vice president of commercial finance for the Americas, Asia Pacific and Africa at Alberto Culver from 2007 to 2010. He also served as vice president of commercial finance for U.S. branded beauty at Alberto Culver.

Ignite Restaurant Group, the Houston-based operator of Joe's Crab Shack and Brick House Tavern + Tap, appointed Michael Dixon CFO and senior vice president. He succeeds Jeffery Rager, who resigned from the $357 million business. Dixon most recently was CFO and senior vice president at Pinkberry. He served as CFO and senior vice president at The Cheesecake Factory from 2004 to 2008 and was the company's controller from 2000 to 2004. Earlier Dixon served as controller at Petsmart.com and director of finance and business development at Walt Disney Co. Prior to Walt Disney, he worked at Coopers & Lybrand.

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