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Cornerstone State Bank

Montgomery, MN · Cert 21525 · Cornerstone Bcorp Inc.

State charter, non-member · FDIC · 7 branches

Q2 2026

$247.0MAssets
$152.4MLoans
$223.9MDeposits
$19.9MEquity
Loan mix
88%RE $134.2M5%C&I $7.1M7%Consumer $11.4MQ3 2024Q2 2026
Deposit mix
86%Interest-bearing $193.2M14%Noninterest $30.7MQ3 2024Q2 2026

Market Position · Minneapolis-St. Paul-Bloomington, MN-WI · 2026 SOD (annual) · 0.1% share · #78 of 125 inst. · $0.1B of $253.2B

10.6% Le Sueur
1.6% Scott
9.2% Sibley
1.4% Blue Earth

Executive Summary

  • Earnings: ROA of 1.30%, up 103 bps year over year; NIM at 3.67%.
  • Asset quality: problem loans at 0.80% of loans (+36 bps YoY), with net recoveries of 1.71%.
  • Capital: tier 1 leverage ratio of 10.60%, up 53 bps from a year ago.
  • Funding: loans stand at 68.07% of deposits as of Q2 2026.

Return on Assets (quarter, annualized)

1.30%+103 bps YoY

Net Interest Margin (quarter, annualized)

3.67%+89 bps YoY

Efficiency Ratio (quarter, annualized)

60.67%-1,307 bps YoY

Tier 1 Leverage Ratio

10.60%+53 bps YoY

NIM

4.07%Q2 ’244.44%Q2 ’255.11%Q2 ’26+20%+32%

Non-interest income vs. expense

2.35%Q2 ’242.49%Q2 ’252.55%Q2 ’26+6%+5%

Discrete quarter, annualized.

MetricQ3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Earnings
Return on Assets0.46%0.88%0.48%0.28%0.95%0.91%1.04%1.30%+103 bps
Return on Equity7.23%13.67%7.67%4.14%13.15%11.71%13.36%16.60%+1,247 bps
Net Interest Margin2.24%2.51%2.58%2.78%2.81%2.97%3.16%3.67%+89 bps
Efficiency Ratio76.34%62.29%77.00%73.74%65.25%67.51%61.47%60.67%-1,307 bps
Non-Interest Burden1.58%1.37%1.90%1.92%1.63%1.86%1.78%2.02%+10 bps
Growth
Asset Growth (YoY)4.94%3.84%2.75%3.95%0.57%2.13%4.09%4.91%+96 bps
Loan Growth (YoY)10.68%11.99%8.65%3.87%2.10%2.84%3.63%3.76%-12 bps
Deposit Growth (YoY)2.09%4.09%2.77%4.29%0.89%1.20%3.75%4.65%+36 bps
Asset Quality
Nonperforming Loans / Loans0.12%0.88%0.96%0.44%0.44%0.48%0.48%0.80%+36 bps
Net Charge-Offs / Loans0.52%-0.03%0.04%1.52%-0.02%-0.07%0.00%-1.71%-322 bps
Allowance / Loans1.02%1.02%1.06%0.93%0.94%0.91%0.93%1.40%+47 bps
Allowance Coverage of NPLs8.7x1.2x1.1x2.1x2.1x1.9x1.9x1.7x-0.3x
Capital
Tier 1 Leverage Ratio9.99%10.09%9.97%10.07%10.28%10.32%10.34%10.60%+53 bps
Total Risk-Based Capital9.99%10.09%9.97%10.07%10.28%10.32%10.34%10.60%+53 bps
Equity / Assets6.89%6.06%6.44%6.92%7.59%7.87%7.63%8.08%+116 bps
Liquidity & Funding
Loans / Deposits68.00%69.29%70.47%68.65%68.82%70.41%70.39%68.07%-58 bps
Liquid Assets / Assets0.38%1.06%0.35%0.96%2.39%1.58%1.46%1.65%+69 bps
CRE / Total Capitaln/an/an/an/a173.27%177.69%173.33%n/an/a