The Rosen Law Firm, P.A. announces that it is investigating the Board of Directors of Sigma-Aldrich Corporation (NASDAQ:SIAL) for possible breaches of fiduciary duty and other violations of state law by failing to adequately shop Sigma-Aldrich to maximize shareholder value before agreeing to be acquired by Merck KGaA.

If you would like to join the action, go to http://rosenlegal.com/cases-369.html or contact Phillip Kim or Kevin Chan, toll-free at 866-767-3653, or via e-mail at pkim@rosenlegal.com or kchan@rosenlegal.com. There is no cost or obligation to you.

Under the terms of the proposed transaction, shareholders will receive $140.00 in cash for each share of Sigma-Aldrich they own. The proposed transaction is valued at approximately $17 billion. The investigation relates to whether the proposal for $140.00 in cash per share is fair to public shareholders and whether Sigma-Aldrich’s Board breached its fiduciary duties in connection with the proposed sale.

If you currently own shares of Sigma-Aldrich and wish to obtain additional information, please visit the website at http://rosenlegal.com/cases-369.html. You may also contact Phillip Kim or Kevin Chan of The Rosen Law Firm toll free at 866-767-3653 or via e-mail at pkim@rosenlegal.com or kchan@rosenlegal.com.

The Rosen Law Firm represents investors throughout the globe, concentrating its practice in securities class actions and shareholder derivative litigation.

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