$2.5B
total assets, June 30, 2026
Bank Five Nine is a state nonmember bank based in Oconomowoc, WI, owned by Oconomowoc Bancshares, Inc. (OCNB). As of June 30, 2026 it held $2.5 billion in assets and $2.1 billion in deposits; assets were up 1.1% from a year before. It has 15 branches.
Updated Oct 11, 2026 · numbers as of June 30, 2026
Total assets
$2.5B
+1.1% in a year · -3.0% in a quarter
Deposits
$2.1B
-0.0% in a year · -3.5% in a quarter
Loans
$2.1B
+7.7% in a year · +0.5% in a quarter
Profit so far
$17.2M
Jan 1 to Jun 30, 2026 · +21.7% in a year
Capital ratio
9.77%
+1.44 pts in a year
Return on assets
1.32%
+0.15 pts in a year
Facts
- Type
- State nonmember bank
- Head office
- 155 W Wisconsin Ave, Oconomowoc, WI, 53066
- County
- Waukesha
- Holding company
- Oconomowoc Bancshares, Inc. (OCNB)
- Established
- Sep 1, 1859
- Employees
- 342
- Branches
- 15
- Website
- www.bankfivenine.com
- Id
- b12517
Quarter by quarter
March 31, 1984 to June 30, 2026
Assets, deposits and loans
Each quarter end, US dollars
Profit by quarter
Net income of each quarter, the last 12
Ratios
Percent. Return on assets and net interest margin are yearly rates.
Branches
15 offices as of June 30, 2026, holding $2.1 billion in deposits
Branch map
Every branch, sized by its deposits
| State | Branches | Deposits | Share |
|---|---|---|---|
| Wisconsin | 15 | $2.1B | 100.0% |
| Largest branches | Place | Deposits |
|---|---|---|
| Bank Five Nine (main office) | Oconomowoc, WI | $776M |
| Germantown Branch | Germantown, WI | $170M |
| Brookfield Branch | Brookfield, WI | $167M |
| Hartland Branch | Hartland, WI | $157M |
| Brown Street Branch | Oconomowoc, WI | $141M |
| West Bend Branch | West Bend, WI | $139M |
| Summit Avenue Branch | Oconomowoc, WI | $121M |
| Mequon Branch | Mequon, WI | $107M |
| Hartford Branch | Hartford, WI | $94.4M |
| East Brookfield | Brookfield, WI | $84.1M |
Related pages
Questions and answers
How big is Bank Five Nine?
$2.5 billion in total assets and $2.1 billion in deposits as of June 30, 2026, with assets up 1.1% from a year before. Its loans were $2.1 billion.
How many branches does Bank Five Nine have?
15 branches in Wisconsin as of June 30, 2026.
Is Bank Five Nine profitable?
Yes: it earned $17.2 million from January 1 to June 30, 2026 (up 21.7% from the same months a year before). Its return on assets was 1.32% a year; about 1% is typical.
Who owns Bank Five Nine?
Bank Five Nine is owned by Oconomowoc Bancshares, Inc., its holding company, which is listed as OCNB.
Official public data from the reports every insured bank files each quarter. Profit so far runs from January 1 to the quarter end. Branch deposits are counted once a year, as of June 30. New quarters appear about two months after the quarter ends.