LMNX acquires NSPH for $1.70/sh in cash—a 179% premium to NSPH’s closing price on 5/13/16 (the last trading day before LMNX’s original buyout offer of $1.35/sh): https://finance.yahoo.com/news/luminex-corporation-nanosphere-inc-acquisition-100000806.html The increase in the buyout price from $1.35 to $1.70 was triggered by a counter-offer from an undisclosed third party.