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Security Bank, S.B.

Springfield, IL · Cert 27723 · Security Midwest Bcorp Inc.

SI · FDIC · 3 branches

Q2 2026

$244.5MAssets
$137.5MLoans
$185.5MDeposits
$22.7MEquity
Loan mix
88%RE $113.6M9%C&I $11.5M3%Consumer $3.7MQ2 2025Q2 2026
Deposit mix
71%Interest-bearing $131.3M29%Noninterest $54.2MQ2 2025Q2 2026

NIM

4.51%Q2 ’244.90%Q2 ’255.06%Q2 ’26+22%-5%

Non-interest income vs. expense

3.44%Q2 ’243.70%Q2 ’253.35%Q2 ’26+7%-7%

Financial Results

Return on Assets (YTD, annualized)

0.68%-1 bps YoY

Net Interest Margin (YTD, annualized)

3.64%-18 bps YoY

Efficiency Ratio (YTD, annualized)

76.10%-224 bps YoY

Tier 1 Leverage Ratio

10.09%+94 bps YoY

Year to date, annualized, through each quarter.

MetricQ2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets0.69%0.66%0.15%0.65%0.68%-1 bps
Net Interest Margin3.82%3.77%3.53%3.50%3.64%-18 bps
Non-Interest Burden2.78%2.82%3.10%2.44%2.57%-21 bps
Loan Growth (YoY)4.57%1.57%4.07%16.32%21.85%+1,728 bps
Nonperforming Loans / Loans0.72%0.60%0.27%0.17%0.16%-56 bps
Allowance / Loans1.02%1.00%0.87%0.86%0.85%-17 bps
Tier 1 Leverage Ratio9.15%11.98%10.63%9.75%10.09%+94 bps
Equity / Assets7.17%10.87%8.40%8.65%9.28%+212 bps
Liquid Assets / Assets21.00%15.14%17.76%11.13%6.12%-1,489 bps