L. Dennis Kozlowski, accused of looting hundreds of millions of dollars from Tyco International Ltd. to fund a lavish lifestyle of parties and extravagant purchases, was convicted Friday of grand larceny and other charges.

A Manhattan State Supreme Court jury deliberated 11 days before convicting the former Tyco CEO and the conglomerate’s former finance chief, Mark H. Swartz. The verdict came after a four-month trial; the pair face up to 30 years in prison on their convictions — the maximum sentence for both under the law, prosecutors said.