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Oak Bank

Fitchburg, WI · Cert 35333 · Oak Financial Inc.

State charter, non-member · FDIC · 1 branch

Q2 2026

$486.3MAssets
$381.0MLoans
$419.6MDeposits
$52.7MEquity
Loan mix
83%RE $302.0M16%C&I $59.5M0%Consumer $1.1MQ3 2024Q2 2026
Deposit mix
79%Interest-bearing $331.3M21%Noninterest $88.2MQ3 2024Q2 2026

Return on Assets (YTD, annualized)

1.28%+15 bps YoY

Net Interest Margin (YTD, annualized)

3.56%+33 bps YoY

Efficiency Ratio (YTD, annualized)

56.73%-217 bps YoY

Tier 1 Leverage Ratio

12.28%+64 bps YoY

NIM

4.90%Q2 ’245.30%Q2 ’255.23%Q2 ’26+17%+10%

Non-interest income vs. expense

1.96%Q2 ’242.11%Q2 ’252.23%Q2 ’26+21%+6%

Year to date, annualized, through each quarter.

MetricQ3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets1.04%0.98%1.07%1.14%1.17%1.11%1.26%1.28%+15 bps
Net Interest Margin2.74%2.80%3.16%3.23%3.25%3.25%3.54%3.56%+33 bps
Non-Interest Burden1.41%1.55%1.78%1.75%1.74%1.86%1.88%1.86%+11 bps
Loan Growth (YoY)5.34%2.29%-2.75%-1.15%-4.08%-4.39%-3.77%-0.55%+59 bps
Nonperforming Loans / Loans0.00%0.40%0.41%0.40%0.42%0.18%0.00%0.04%-36 bps
Allowance / Loans1.49%1.52%1.58%1.56%1.62%1.66%1.71%1.65%+9 bps
Tier 1 Leverage Ratio11.03%10.83%11.23%11.64%11.34%11.33%12.00%12.28%+64 bps
Equity / Assets9.96%9.82%10.10%10.32%10.19%10.77%10.97%10.83%+51 bps
Liquid Assets / Assets3.96%2.95%2.46%2.94%6.71%5.68%5.41%6.35%+341 bps