Oostburg State Bank
Oostburg, WI FDIC 10380 $100M-$500M
Quarter Ended
Q1'26
Data as of March 31, 2026
Quarterly Snapshot
Metric Q1'26 YoY Δ Q1'25
Profitability
Return on Assets (%) 1.21% +0.08 1.13%
Return on Equity (%) 11.56% +0.39 11.17%
Net Interest Margin (%) 3.92% +0.45 3.46%
Efficiency Ratio (%) 62.66% -2.15 64.80%
Pre-Provision Profit ($M) $2 +0.41 $1
Cost of Funds (%) 1.58% -0.22 1.80%
Balance Sheet
Total Assets ($M) $430 +38.95 $391
Gross Loans ($M) $316 +35.31 $280
Loan Growth YoY (%) 81.80% +2.01 79.79%
Total Deposits ($M) $381 +34.69 $346
Shareholders Equity ($M) $45 +4.78 $41
Tang. Book Value ($M) $45 +4.81 $40
TBV excl. AOCI ($M)** $49 +5.32 $44
Loan / Deposit Ratio (%) 81.80% +2.01 79.79%
Credit Quality
NPA / Total Assets (%) 0.20% +0.01 0.20%
Allowance / Loans (%) 1.31% -0.17% 1.48%
Net Charge-Off Ratio (%) 0.28% +0.00 0.27%
Capital
Tier 1 Capital Ratio (%) 13.09% -0.33 13.43%
** TBV excl. AOCI adds back unrealised losses on AFS securities to show capital excluding mark-to-market interest rate impact.
8-Quarter Trend
Metric Q2'24 Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26
▁▁▂▂▄▅▆█ Net Interest Margin (%) 3.33% 3.40% 3.42% 3.46% 3.56% 3.67% 3.74% 3.92%
▂▅▁▅▄█▅█ Return on Assets (%) 1.05% 1.12% 1.02% 1.13% 1.10% 1.19% 1.12% 1.21%
▅▂█▄▇▃█▁ Efficiency Ratio (%) 65.1% 63.2% 66.8% 64.8% 66.2% 64.0% 67.0% 62.7%
██▇▆▆▄▁▁ Cost of Funds (%) 1.84% 1.88% 1.82% 1.80% 1.78% 1.72% 1.61% 1.58%
▇▆▄▄█▁▂▄ NPA / Assets (%) 0.27% 0.25% 0.20% 0.20% 0.30% 0.11% 0.14% 0.20%
▇▇▅▄█▁▂▄ Net Charge-Off Ratio (%) 0.36% 0.35% 0.29% 0.27% 0.41% 0.16% 0.20% 0.28%
▁▄▁▃▅███ Tang. Book Value ($M) $38 $40 $38 $40 $41 $44 $44 $45
▁▁▂▃▄▅▆█ Gross Loans ($M) $266 $270 $278 $280 $286 $292 $303 $316
▁▂▄▄▄▆██ Total Deposits ($M) $317 $327 $350 $346 $344 $362 $383 $381
Portfolio Composition — Q1'26
Loan Mix%
Real Estate80%
C&I / Commercial17%
Consumer1%
Other3%
Deposit Mix%
Nonint.-Bearing Demand23%
Interest-Bearing (core)66%
Brokered / Other11%
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