UPDATE 1-Germany's Merck to buy Bio-Techne for $11.3 billion

Bio-Techne Corporation
Merck & Co., Inc.

Bio-Techne Corporation

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Merck & Co., Inc.

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Adds shares in paragraph 2, details in paragraphs 3 to 5

- Merck KGaA MRCG.DE has agreed to acquire biotech firm Bio-Techne Corp TECH.O for $11.3 billion, the German science and healthcare firm said in a statement on Thursday.

Shares of Bio-Techne rose 22% in premarket trading.

The offer price of $73 per share implies a 24% premium to Bio-Techne's close on Wednesday.

The acquisition would expand Merck's presence in life-science research. Bio-Techne supplies research reagents, proteins, antibodies, analytical instruments and other tools used by scientists and drug developers.

The German firm said it would fund the acquisition through a combination of existing cash and new debt.