Fitchburg, WI
Bank Oak Bank
Oak Bank is a federally insured bank based in Fitchburg, Wisconsin.
- Type
- Bank
- Charter
- State-chartered commercial bank, not a Federal Reserve member
- Primary regulator
- FDIC
- Established
- August 14, 2000
- Headquarters
- Fitchburg, WI
- FDIC certificate #
- 35333
- Fed RSSD ID
- 2857600
- Holding company
- Oak Financial Inc
- Website
- WWW.OAK.BANK
$462.1M
Total assets Data as of Q1 2026
$397.6M
Total deposits Data as of Q1 2026
1
Branch locations Data as of Q1 2026
$1.5M
Net income Data as of Q1 2026
1.26%
Return on assets Data as of Q1 2026
Source: U.S. FDIC BankFind & NCUA 5300 Call Report (public data). Data sources · Data as of Q1 2026
Branches by state
Oak Bank operates 1 branch location in Wisconsin. Select a state to drill down to its towns and individual branches.
Ownership
Oak Bank is owned by Oak Financial Inc. See the full ownership & merger history.
Other banks in Wisconsin
Federally insured banks headquartered in Wisconsin, by total assets.
- Associated Bank, National Association $45.54B
- Nicolet National Bank $15.55B
- Johnson Bank $7.01B
- Bank First, N.A. $6.06B
- Town Bank, National Association $4.52B
- First Business Bank $4.32B
- John Deere Financial, f.s.b. $4.11B
- Lake Ridge Bank $3.33B
Similar-size banks
Institutions close to Oak Bank’s $462.1M in assets.
- Ameristate Bank $462.2M
- Sterling State Bank $462.3M
- The Hometown Savings Bank $461.9M
- Gold Coast Bank $463.1M
- High Plains Bank $460.5M
- United Savings Bank $460.4M