The Huntington National Bank

GreenStone provides financial services to the agricultural industry - including short, intermediate and long-term loans, equipment and building leases, life insurance, crop insurance, accounting and tax services. GreenStone also specializes in residential and country home loans, and provides lending products for the purchase, improvement, construction or refinance of residences along with financing future home sites and recreational land.

Employees of the Sealed Power Company started the credit union in 1942 as the Sealed Power Employees Credit Union. Initially the credit union served just the employees of Sealed Power, but over the years membership was made available to relatives of members. Additional groups were added through mergers with Muskegon Printing, Industrial Employees Credit Union, Oceana Schools Employees Credit Union and West Michigan Steel Employees Federal Credit Union. In 2004, the credit union was granted a community charter. This charter allows membership privileges to anyone who lives, works, worships, or attends school in Allegan, Kent, Mason, Montcalm, Muskegon, Ottawa, Oceana, or Newaygo County.