Cornerstone State Bank
Montgomery, MN FDIC 21525 $100M-$500M
Quarter Ended
Q1'26
Data as of March 31, 2026
Quarterly Snapshot
Metric Q1'26 YoY Δ Q1'25
Profitability
Return on Assets (%) 1.32% +0.71 0.61%
Return on Equity (%) 17.00% +7.26 9.74%
Net Interest Margin (%) 3.43% +0.56 2.87%
Efficiency Ratio (%) 61.47% -15.53 77.00%
Pre-Provision Profit ($M) $1 +0.44 $0
Cost of Funds (%) 1.49% -0.25 1.75%
Balance Sheet
Total Assets ($M) $243 +9.54 $234
Gross Loans ($M) $156 +5.47 $150
Loan Growth YoY (%) 69.73% +0.01 69.73%
Total Deposits ($M) $221 +8.00 $213
Shareholders Equity ($M) $19 +3.50 $15
Tang. Book Value ($M) $18 +3.55 $15
TBV excl. AOCI ($M)** $22 +3.91 $18
Loan / Deposit Ratio (%) 69.73% +0.01 69.73%
Credit Quality
NPA / Total Assets (%) 0.31% -0.31 0.62%
Allowance / Loans (%) 0.93% -0.12% 1.06%
Net Charge-Off Ratio (%) 0.48% -0.47 0.96%
Capital
Tier 1 Capital Ratio (%) 0.00% 0.00 0.00%
** TBV excl. AOCI adds back unrealised losses on AFS securities to show capital excluding mark-to-market interest rate impact.
8-Quarter Trend
Metric Q2'24 Q3'24 Q4'24 Q1'25 Q2'25 Q3'25 Q4'25 Q1'26
▁▁▁▄▄▅▅█ Net Interest Margin (%) 2.47% 2.48% 2.56% 2.87% 2.95% 2.99% 3.05% 3.43%
▁▁▃▃▂▄▅█ Return on Assets (%) 0.24% 0.35% 0.55% 0.61% 0.48% 0.72% 0.83% 1.32%
█▇▆▅▅▄▃▁ Efficiency Ratio (%) 87.4% 83.6% 77.8% 77.0% 75.3% 71.8% 70.7% 61.5%
▆█▇▅▄▃▁▁ Cost of Funds (%) 1.83% 1.98% 1.86% 1.75% 1.69% 1.67% 1.54% 1.49%
▁▁██▄▄▄▄ NPA / Assets (%) 0.05% 0.07% 0.56% 0.62% 0.28% 0.28% 0.31% 0.31%
▁▁██▄▄▄▄ Net Charge-Off Ratio (%) 0.08% 0.12% 0.88% 0.96% 0.44% 0.44% 0.48% 0.48%
▁▄▂▃▅▇██ Tang. Book Value ($M) $13 $15 $14 $15 $16 $17 $19 $18
▁▁▅▅▄▃▇█ Gross Loans ($M) $141 $143 $150 $150 $147 $146 $154 $156
▁▃▆▅▅▄▇█ Total Deposits ($M) $205 $210 $216 $213 $214 $212 $219 $221
Portfolio Composition — Q1'26
Loan Mix%
Real Estate86%
C&I / Commercial5%
Consumer7%
Other2%
Deposit Mix%
Nonint.-Bearing Demand14%
Interest-Bearing (core)83%
Brokered / Other3%
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