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Northbrook Bank & Trust Company, National Association

Northbrook, IL · Cert 57082 · Wintrust Financial Corp.

National charter · OCC · 15 affiliate banks · 7 branches (213 in holding)

Q2 2026

$6.4BAssets
$4.5BLoans
$5.4BDeposits
$531.5MEquity
Loan mix
36%RE $1.5B53%C&I $2.1B11%Consumer $0.4BQ3 2024Q2 2026
Deposit mix
74%Interest-bearing $4.0B26%Noninterest $1.4BQ3 2024Q2 2026

Return on Assets (YTD, annualized)

1.42%-1 bps YoY

Net Interest Margin (YTD, annualized)

2.82%+4 bps YoY

Efficiency Ratio (YTD, annualized)

29.17%-434 bps YoY

Tier 1 Leverage Ratio

9.38%-14 bps YoY

NIM

5.44%Q2 ’245.32%Q2 ’255.05%Q2 ’26+2%+1%

Non-interest income vs. expense

1.18%Q2 ’241.08%Q2 ’250.94%Q2 ’26-2%-18%

Year to date, annualized, through each quarter.

MetricQ3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets1.28%1.28%1.51%1.43%1.40%1.50%1.32%1.42%-1 bps
Net Interest Margin2.68%2.59%2.81%2.79%2.75%2.78%2.90%2.82%+4 bps
Non-Interest Burden0.67%0.63%0.71%0.68%0.65%0.63%0.56%0.56%-12 bps
Loan Growth (YoY)5.71%18.31%12.63%14.26%16.64%9.17%14.10%9.02%-524 bps
Nonperforming Loans / Loans0.37%0.24%0.26%0.24%0.23%0.25%0.34%0.27%+3 bps
Allowance / Loans0.65%0.63%0.62%0.62%0.69%0.57%0.63%0.61%-2 bps
Tier 1 Leverage Ratio9.72%9.21%9.56%9.52%9.60%9.66%9.36%9.38%-14 bps
Equity / Assets8.85%7.30%8.75%8.43%8.93%8.79%7.53%8.35%-8 bps
Liquid Assets / Assets15.77%23.56%13.77%13.20%12.93%11.80%19.48%15.62%+242 bps