Rockwood Holdings Inc said its shareholder Kohlberg Kravis Roberts & Co will sell almost half of the stake it owns in the specialty chemicals maker, sending its shares down 2 percent in extended trading. Kohlberg Kravis -- an asset management company -- owns about 21 percent stake, or 15.9 million shares in Rockwood Holdings. Goldman Sachs & Co is serving as sole book running manager of the offering, the company said. Rockwood Holdings, which makes inorganic chemicals and solutions and engineered materials, posted its seventh straight market-topping quarterly results last week.
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