At least five groups of Insilco Corp....

At least five groups of Insilco Corp. shareholders have filed suit against the company, seeking to thwart a $950-million management-led leveraged buyout they consider “grossly unfair and inadequate.” The high-technology and specialty consumer products concern’s directors accepted the offer earlier this month. In complaints filed in Superior Court in New Haven, Conn., the shareholders charge that Insilco would be worth a lot more in “an open auction for the company.”