The TellerScore is our own summary of the figures this institution reports publicly; it is not issued or endorsed by any government agency. It is not a prediction, and deposits within insurance limits are protected either way.

From Q2 2025 to Q2 2026, the score rose 3 points (66 → 69), mostly because the earnings component improved by 19 points.

Percentile against banks of similar size nationwide (100th = best among peers; for ratios where lower is better, the scale is flipped).

Similar-size banks in Wisconsin

Yes. Security Bank is an FDIC-insured institution (FDIC certificate #10015). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category.

An estimated 12.0% of deposits ($25.9M) are above the $250,000 FDIC insurance limit, below the peer median of 24%. Insured balances are protected regardless of the score.

The tier 1 leverage ratio is 11.58%, well above the 5% level regulators use as the "well capitalized" benchmark for this measure. Its total risk-based capital ratio is 0.00% (benchmark: 10%).

Check how much of your own balance is covered

Security Bank lists 4 offices in 4 cities. Most locations:

• Bloomer, WI (1)
• New Auburn, WI (1)
• Ridgeland, WI (1)
• Sand Creek, WI (1)

All branch addresses and map

In 2025, Security Bank reported 92 home-loan applications under HMDA (LEI 549300IPFYHYZ3L7UL18): 74 originated ($19,280,000 total), 6 denied, and 5 withdrawn or closed by the applicant. Its denial rate on decided applications was 6.9%, compared with 22.2% for all lenders nationwide.

Denial rates depend heavily on loan type and applicant mix and are not a measure of fairness or of your own odds.

Legal name

Security Bank

Former names

Bank of New Auburn

Type

State-chartered bank

FDIC certificate #

10015

RSSD ID

20053

Primary regulator

FDIC

Holding company

Security Bank Shares Inc

Established

August 28, 1907

Headquarters

112 E Main St, New Auburn, WI 54757

Website

www.securityonlinebank.com

Employees

24