Weiss & Lurie, a national class action and shareholder rights law firm with offices in New York City and Los Angeles, is investigating possible breaches of fiduciary duty and other violations of law by the Board of Directors of Catalyst Health Solutions, Inc. (NASDAQ: CHSI) arising from its agreement for Catalyst to be acquired by SXC Health Solutions Corp. (NASDAQ: SXCI, TSX: SXC) for $28.00 in cash and 0.6606 shares of SXC stock per Catalyst share. The transaction is expected to close in the second half of 2012. Weiss & Lurie is investigating whether the Catalyst Board acted in the best interests of shareholders in approving this deal. Following the close of the acquisition, two current Catalyst directors will sit on the board of the combined company. Notably, Catalyst recently reported that it had “a transformational year” and achieved excellent 2011 results – its revenue increased 42% over last year’s to $5.33 billion, its adjusted earnings per diluted share increased 23% to $2.37, gross profit increased by 31% to $307.9 million, and that it expected a strong 2012 with revenue in the range of $5.8 billion to $6.2 billion. If you own Catalyst shares and would like more information about your rights as a shareholder or additional information concerning our investigation, please contact Julia J. Sun either by telephone at (888) 593-4771 or by email at firstname.lastname@example.org. Weiss & Lurie has litigated hundreds of stockholder class and derivative actions for violations of corporate and fiduciary duties. We have recovered over a billion dollars for defrauded institutions and individuals and obtained important corporate governance in these cases. If you have information or would like legal advice concerning possible corporate wrongdoing (including insider trading, waste of corporate assets, accounting fraud, or issuing materially misleading information), consumer fraud (including false advertising, defective products, or other deceptive business practices), or anti-trust violations, please email us at email@example.com or fill out the form on our website, http://www.weisslurie.com/contact/report_fraud/. Attorney Advertising. Past results do not guarantee a similar outcome.