What are the tax consequences for former Medco holders with regard to the merger with Express-Scripts?

Former Medco shareholders who received Express Scripts stock as part of the merger may face tax consequences depending on the specifics of the transaction. Generally, if the merger qualifies as a tax-free reorganization under IRS rules, shareholders may not recognize gain or loss at the time of the exchange. However, if cash was received in the transaction, that portion could be taxable. It's advisable for former Medco holders to consult a tax professional for personalized guidance based on their individual circumstances.