Catalyst health solutions

Rockville-based Catalyst Health Solutions Inc.    (NASDAQ: CHSI) has agreed to be acquired by fellow pharmacy benefits manager SXC Health Solutions Corp. (NASDAQ: SXCI) in a transaction valued at approximately $4.4 billion.

Under the terms of the agreement, Catalyst shareholders will receive $28 in cash and 0.6606 shares of SXC stock for each Catalyst share. That implies a purchase price of $81.02 per Catalyst share--a 28 percent premium to the closing price of Catalyst stock on April 17.