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Marathon Bank

Wausau, WI · Cert 29745 · Marathon Bcorp Inc.

SI · FDIC · 5 branches

Q2 2026

$261.1MAssets
$219.2MLoans
$197.8MDeposits
$38.6MEquity
Loan mix
98%RE $209.7M1%C&I $3.1M0%Consumer $0.3MQ3 2024Q2 2026
Deposit mix
85%Interest-bearing $168.5M15%Noninterest $29.3MQ3 2024Q2 2026

Return on Assets (YTD, annualized)

0.78%+70 bps YoY

Net Interest Margin (YTD, annualized)

3.24%+57 bps YoY

Efficiency Ratio (YTD, annualized)

73.53%-2,194 bps YoY

Tier 1 Leverage Ratio

15.34%+13 bps YoY

NIM

4.10%Q2 ’244.16%Q2 ’254.78%Q2 ’26+8%+22%

Non-interest income vs. expense

2.73%Q2 ’242.58%Q2 ’252.67%Q2 ’26-21%-10%

Year to date, annualized, through each quarter.

MetricQ3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets-0.22%-0.13%0.28%0.08%0.33%0.50%0.88%0.78%+70 bps
Net Interest Margin2.53%2.57%2.61%2.66%2.77%2.89%3.25%3.24%+57 bps
Non-Interest Burden3.02%2.89%2.31%2.54%2.38%2.31%2.14%2.28%-26 bps
Loan Growth (YoY)-10.98%-9.04%-1.70%9.34%16.98%19.63%12.11%8.37%-97 bps
Nonperforming Loans / Loans0.00%0.00%0.00%0.03%0.09%0.09%0.09%0.03%0 bps
Allowance / Loans0.99%0.99%0.91%0.90%0.86%0.86%0.86%0.80%-11 bps
Tier 1 Leverage Ratio13.42%13.64%13.42%15.21%15.04%15.27%15.35%15.34%+13 bps
Equity / Assets13.40%13.36%12.41%15.02%14.84%14.99%15.19%14.78%-24 bps
Liquid Assets / Assets6.16%5.86%9.45%5.05%5.43%4.53%5.16%4.70%-35 bps