 Matthew Lindenbaum, Director at Dime Community Bancshares NASDAQ:DCOM, made a large buy and sell of company shares on September 3, according to a new SEC filing. What Happened: A Form 4 filing from the U.S. Securities and Exchange Commission reports that on September 3, Matthew Lindenbaum bought 260,487 Dime Community Bancshares shares at prices ranging from 33.07 to 33.17 per share, for a total of 8,638,189. 