NEW YORK--(BUSINESS WIRE)--Lexington Insurance, a division of American International Group, Inc. (AIG), and the largest excess and surplus carrier in the U.S., today celebrated the 50th anniversary of its incorporation by hosting a day of giving back at its Boston headquarters. Approximately 250 employees participated by volunteering at one of three charities, including Stop Hunger Now, for which employees packaged approximately 40,000 meals for those in need overseas. Lexington employees also