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Letter portraitLegal landscapeQuarterYTD

Old Plank Trail Community Bank, National Association

New Lenox, IL · Cert 58314 · Wintrust Financial Corp.

National charter · OCC · 15 affiliate banks · 16 branches (213 in holding)

Q2 2026

$3.5BAssets
$2.5BLoans
$3.1BDeposits
$294.6MEquity
Loan mix
34%RE $0.8B48%C&I $1.1B18%Consumer $0.4BQ2 2025Q2 2026
Deposit mix
85%Interest-bearing $2.6B15%Noninterest $0.5BQ2 2025Q2 2026

NIM

5.29%Q2 ’245.16%Q2 ’254.89%Q2 ’26+2%-1%

Non-interest income vs. expense

1.75%Q2 ’241.59%Q2 ’251.54%Q2 ’26-11%0%

Financial Results

Return on Assets (YTD, annualized)

1.19%-12 bps YoY

Net Interest Margin (YTD, annualized)

3.00%-4 bps YoY

Efficiency Ratio (YTD, annualized)

47.72%-37 bps YoY

Tier 1 Leverage Ratio

8.82%-11 bps YoY

Year to date, annualized, through each quarter.

MetricQ2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets1.32%1.19%1.16%1.28%1.19%-12 bps
Net Interest Margin3.03%2.95%2.98%3.15%3.00%-4 bps
Non-Interest Burden1.30%1.27%1.30%1.37%1.30%0 bps
Loan Growth (YoY)14.90%13.59%10.33%7.86%9.22%-568 bps
Nonperforming Loans / Loans0.43%0.42%0.52%0.32%0.28%-14 bps
Allowance / Loans0.58%0.66%0.67%0.59%0.62%+4 bps
Tier 1 Leverage Ratio8.92%8.79%9.06%9.06%8.82%-11 bps
Equity / Assets8.51%8.54%8.82%8.61%8.34%-17 bps
Liquid Assets / Assets11.65%11.37%9.92%9.69%11.45%-20 bps