We are investigating possible breaches of fiduciary duty and other violations of law by the board of directors of ImmunoGen, Inc. (“ImmunoGen” or the “Company”) (NASDAQ: IMGN), in connection with its proposed acquisition by AbbVie Inc. (NYSE: ABBV).  Under the merger agreement, Company shareholders will receive $31.26 per share.

Weiss Law is investigating whether (i) the ImmunoGen board acted in the best interests of Company shareholders in agreeing to the merger, (ii) the $31.26 merger consideration adequately compensates ImmunoGen shareholders, and (iii) all information regarding the sales process and valuation of the transaction will be fully and fairly disclosed.

Weiss Law 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 clients and obtained important corporate governance relief in many of 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 materially misleading information), consumer fraud (including false advertising, defective products, or other deceptive business practices), or anti-trust violations, please email us at stockinfo@weisslawllp.com