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Battle of the green and white proxy cards: Merck ups the ante to buy Tempe's Versum

Hayley Ringle
Battle of the green and white proxy cards: Merck ups the ante to buy Tempe's Versum

Versum announced in January it planned to merge with Entegris Inc. in a deal that would move the company’s headquarters out of Tempe into Entegris’ offices in Massachusetts.