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Shell Lake State Bank

Shell Lake, WI · Cert 14911 · Shell Lake Bcorp Inc.

State charter, non-member · FDIC · 5 branches

Q2 2026

Board Package

Performance Trends and Peer Comparison

Part 1Performance Trends, own institution only2
Part 2Peer Comparison, banks under $1B in assets in WI3

Basis

Quarter: Q2 2026, the quarter ended June 30, 2026, on both parts.

Income statement: year to date as filed, annualized, on both parts.

Balance sheet: as filed at quarter end.

Peer group

Banks under $1B in assets in WI (n=109 to 112). Each measure ranks only the institutions that reported it, so n varies by measure.

Peer groups below the disclosure floor are suppressed.

Peer standing

Capital

42

Q2 2024Q2 2026peer median (50)

Asset Quality

62

Q2 2024Q2 2026peer median (50)

Profitability

40

Q2 2024Q2 2026peer median (50)

Liquidity

62

Q2 2024Q2 2026peer median

Efficiency

68

Q2 2024Q2 2026peer median (50)

Growth

No peer data yet

Capital, Asset Quality, Profitability, Efficiency: higher is always a stronger peer standing (▲ better, ▼ worse). Liquidity, Growth: the score reflects closeness to the peer median -- 100 is sitting exactly at the median, falling the same way whether the bank runs above or below it.

Source: FFIEC Call Report (031/041/051), as filed. Dollar figures derived from reported amounts in thousands. Ratios computed by CallReports.ai using published regulatory formulas.

CallReports · callreports.ai · Board PackageGenerated 2026-10-11

Shell Lake State Bank

Shell Lake, WI · Cert 14911 · Shell Lake Bcorp Inc.

State charter, non-member · FDIC · 5 branches

Q2 2026

$361.8MAssets
$240.8MLoans
$314.2MDeposits
$39.3MEquity
Loan mix
92%RE $209.4M4%C&I $9.1M4%Consumer $10.2MQ2 2025Q2 2026
Deposit mix
79%Interest-bearing $247.9M21%Noninterest $66.3MQ2 2025Q2 2026

NIM

4.22%Q2 ’244.62%Q2 ’254.89%Q2 ’26+15%+13%

Non-interest income vs. expense

1.78%Q2 ’241.83%Q2 ’252.01%Q2 ’26+6%+9%

Financial Results

Return on Assets (YTD, annualized)

1.16%+19 bps YoY

Net Interest Margin (YTD, annualized)

3.18%+36 bps YoY

Efficiency Ratio (YTD, annualized)

56.98%-166 bps YoY

Tier 1 Leverage Ratio

12.31%+31 bps YoY

Year to date, annualized, through each quarter.

MetricQ2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets0.97%1.00%1.01%1.20%1.16%+19 bps
Net Interest Margin2.82%2.79%2.82%3.10%3.18%+36 bps
Non-Interest Burden1.53%1.48%1.52%1.57%1.66%+13 bps
Loan Growth (YoY)2.46%2.97%3.44%4.92%6.05%+360 bps
Nonperforming Loans / Loans0.06%0.05%0.24%0.06%0.03%-3 bps
Allowance / Loans1.24%1.25%1.25%1.29%1.28%+4 bps
Tier 1 Leverage Ratio12.00%11.85%11.61%11.99%12.31%+31 bps
Equity / Assets9.82%10.22%10.38%10.60%10.87%+105 bps
Liquid Assets / Assets0.67%0.63%0.49%0.44%0.30%-37 bps

Source: FFIEC Call Report (031/041/051), as filed. Dollar figures derived from reported amounts in thousands. Ratios computed by CallReports.ai using published regulatory formulas. Income-statement figures are year-to-date as filed, annualized (the UBPR convention). Each quarter includes the ones before it.

CallReports · callreports.ai· Performance TrendsGenerated 2026-10-11

Shell Lake State Bank

Shell Lake, WI · Cert 14911 · Peer group: banks under $1B in assets in WI (n=109-112) · Shell Lake Bcorp Inc.

State charter, non-member · FDIC · 5 branches

Q2 2026

$361.8MAssets
$240.8MLoans
$314.2MDeposits
$39.3MEquity

Return on Assets

1.16%

Rank 57 of 112

Net Interest Margin

3.18%

Rank 85 of 112

Efficiency Ratio

56.98%

Rank 37 of 112

Equity / Assets

10.87%

Rank 50 of 112

Non-interest income vs. expense

$1.3M$7.4MINCOMEEXPENSE
Unfavorable gap of $6.1M · efficiency ratio beats 68% of banks under $1B in assets in WI
Bank 56.98%Peer median 62.7%Q3 2024Q2 2026Shaded: peer 25th to 75th percentile
MetricYour BankPeer 25thPeer MedianPeer 75thStandingRankPeer Position
Return on Assets1.16%0.85%1.17%1.51%Beats 49%57 / 112
Net Interest Margin3.18%3.19%3.59%3.89%Beats 24%85 / 112
Nonperforming Loans / Loans0.03%0.03%0.22%0.91%Beats 73%30 / 109
Tier 1 Capital Ratio12.31%11.22%12.95%15.76%Beats 40%67 / 112
Equity / Assets10.87%9.17%10.74%13.13%Beats 55%50 / 112
Loans / Assets66.55%64.03%71.52%78.98%32nd pctl76 / 112