Toronto private-equity firm buys Nielsen show division for $950 million. (May 6)

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Acquires Wallmerk chemical-production firm.

  Founder of Miracle Sealants Co.

  February imports increase another two-thirds from 2012 volume.

  Longtime company chief Tom Peck to be chairman. (April 8)

  Private-equity fund divesting most of its stake (April 8)