German Merck to buy Sigma Aldrich for $17 billion

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Frankfurt, Germany • Drug company Merck says it has agreed to buy St. Louis-based chemical firm Sigma-Aldrich Corp. for $17 billion.

Darmstadt-based Merck KGaA said Monday it is paying $140 per share in cash for all of Sigma-Aldrich's shares — a premium of 37 percent over Friday's closing price of $102.37.

Sigma-Aldrich has over 9,000 employees and supplies chemicals and laboratory equipment to government and commercial research facilities. It said its board of directors has unanimously approved the deal, which is expected to close next year, subject to regulators' approval.

Sigma-Aldrich CEO Rakesh Sachdev said the deal was a "very positive outcome" for shareholders due to the price premium and for employees, "who will benefit from enhanced opportunities as part of a larger, more global organization."