Alvarez & Marsal — Greg Mateja, former head of risk integration at ING U.S., joined the firm’s executive benefits consulting division as a managing director, based in Greenwich, Conn. At ING, Mateja was responsible for asset-liability management.

Blackstone Group LP (NYSE: BX) — David Calhoun, chief executive of television ratings company Nielsen Holdings NV, has been hired head the New York firm’s private equity portfolio operations. His responsibilities include assisting the firm in conducting due diligence prior to new deals, helping to identify post-acquisition business strategies and aiding the CEOs of portfolio companies with operational challenges. Blackstone will position Calhoun on the firm’s management and executive committee. He will also act as executive chairman at Nielsen beginning in January. Nielsen’s operating income jumped from $800 million at the time of the leveraged buyout to $1.7 billion in 2012 under Calhoun’s leadership. Calhoun joined Nielsen in 2006 after it was acquired by a Blackstone-backed consortium that included Carlyle Group LP (Nasdaq: CG), KKR & Co LP (NYSE: KKR) and Thomas H. Lee Partners LP. Calhoun currently sits on the boards of Boeing Co. (NYSE: BA) and Caterpillar Inc. (NYSE: CAT). Previously, he served as vice chairman of General Electric Co. (NYSE: GE) and chief executive of GE Infrastructure, the Fairfield, Conn.-based company’s largest business unit.

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