The First Security Bank
Overbrook, KS · Owner: Overbrook Bankshares Inc
$226M
total assets, June 30, 2026
$226M
total assets, June 30, 2026
The First Security Bank is a state nonmember bank based in Overbrook, KS, owned by Overbrook Bankshares Inc. As of June 30, 2026 it held $225.6 million in assets and $191.4 million in deposits; assets were up 126.5% from a year before. It has 8 branches.
Updated Oct 11, 2026 · numbers as of June 30, 2026
Total assets
$226M
+126.5% in a year · +93.3% in a quarter
Deposits
$191M
+123.5% in a year · +86.3% in a quarter
Loans
$156M
+128.2% in a year · +125.1% in a quarter
Profit so far
$2.2M
Jan 1 to Jun 30, 2026 · +695.6% in a year
Capital ratio
7.98%
-0.66 pts in a year
Return on assets
2.91%
+2.36 pts in a year
Facts
- Type
- State nonmember bank
- Head office
- 312 Maple St, Overbrook, KS, 66524
- County
- Osage
- Holding company
- Overbrook Bankshares Inc
- Established
- Apr 3, 1897
- Employees
- 54
- Branches
- 8
- Website
- www.firstsecurityks.com
- Id
- b4752
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
8 offices as of June 30, 2026, holding $191.4 million in deposits
Branch map
Every branch, sized by its deposits
| State | Branches | Deposits | Share |
|---|---|---|---|
| Kansas | 8 | $191M | 100.0% |
| Largest branches | Place | Deposits |
|---|---|---|
| Conway Bank Branch | Conway Springs, KS | $35.2M |
| The First Security Bank (main office) | Overbrook, KS | $30.7M |
| Carbondale Branch | Carbondale, KS | $27.9M |
| Downtown Wichita Branch | Wichita, KS | $25.9M |
| Farmers & Merchants Branch | Argonia, KS | $24.0M |
| Norwich Branch | Norwich, KS | $17.7M |
| Paola Branch | Paola, KS | $16.0M |
| The First Security Bank Tonganoxie Branch | Tonganoxie, KS | $13.9M |
Related pages
Questions and answers
How big is The First Security Bank?
$225.6 million in total assets and $191.4 million in deposits as of June 30, 2026, with assets up 126.5% from a year before. Its loans were $156.3 million.
How many branches does The First Security Bank have?
8 branches in Kansas as of June 30, 2026.
Is The First Security Bank profitable?
Yes: it earned $2.18 million from January 1 to June 30, 2026 (up 695.6% from the same months a year before). Its return on assets was 2.91% a year; about 1% is typical.
Who owns The First Security Bank?
The First Security Bank is owned by Overbrook Bankshares Inc, its holding company.
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.