The Rosen Law Firm, P.A. announces that it is investigating the Board of Directors of Ambit Biosciences Corporation (NASDAQ:AMBI) for possible breaches of fiduciary duty and other violations of law by failing to adequately shop Ambit to maximize shareholder value before agreeing to be acquired by Daiichi Sankyo Company, Ltd.

If you would like to join the action, go to http://rosenlegal.com/cases-381.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 $15.00 in cash for each share of Ambit they own and the right to receive an additional payment of up to $4.50 per share if certain goals are reached. The proposed transaction is valued at approximately $410 million. The investigation relates to whether the proposal for $15.00 in cash and the right to receive an additional payment of up to $4.50 per share is fair to public shareholders and whether Ambit’s Board breached its fiduciary duties in connection with the proposed sale.

If you currently own shares of Ambit and wish to obtain additional information, please visit the website at http://rosenlegal.com/cases-381.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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