Description LSB Corporation helps those with common (and uncommon) wealth in Massachusetts. It owns RiverBank (formerly Lawrence Savings Bank), which has about a half dozen offices in northeastern Massachusetts and nearby southern New Hampshire. Founded in 1868, RiverBank offers checking and savings accounts, NOW and money market accounts, CDs, and IRAs. Commercial mortgages dominate the company's lending activities; residential mortages and home equity, construction, business, and consumer loans round out its loan book. People's United Financial is buying LSB Corporation for some $96 million.