- On January 23rd, 1928 Cornerstone Bank was founded as "Watonga State Bank" in Watonga, Oklahoma.
- In May of 1992, the bank purchased our Geary location from Chisholm Federal Savings & Loan.
- Our name changed to Cornerstone Bank in 2006.
- In 2008, our Mustang location was opened.
- In 2013, our Mustang location expanded with the opening of the Business Banking Center.
- We're looking foward to our next big milestone: our new Oklahoma City Branch opening in 2021!