NEW YORK — Vivus Inc.'s biggest shareholder said Tuesday it is suing the obesity drug maker as it continues to fight for greater control of the company.
First Manhattan Co., which as a 9.9-percent stake in Vivus, said it was in position to win a proxy fight when Vivus adjourned voting on a slate of new board members. It filed suit aiming to stop the drug maker and its representatives from soliciting proxies or votes for the company's annual shareholder meeting. The investment firm also wants the court to certify disputed results of the election of Vivus' directors, and to stop the company's current directors from taking any further action on behalf of Vivus.
The suit was filed in the Court of Chancery of the State of Delaware.
The legal action is the latest step in a dispute that began in March. Vivus said Tuesday it has been negotiating with First Manhattan in good faith.
Stating that the launch of Vivus' weight loss drug Qsymia was unsuccessful, First Manhattan initially moved to replace Vivus' entire board of directors, claiming that the company needed new and independent leadership. The firm said the company should change its U.S. business strategy and work to get Qsymia approved in Europe
It also sought expand the board to nine directors from six.
Last month, First Manhattan reached out to shareholders seeking support for its slate. And earlier this month, it said it would name Anthony Zook, the former president of MedImmune, as Vivus' CEO if it gains control of the company. Leland Wilson has been CEO of Vivus since 1991.
Shareholders will elect a slate of directors at the company's annual meeting, which was originally scheduled for Monday but was moved to Thursday. First Manhattan wants the court to recognize the votes cast on Monday.