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Thumb Bank & Trust

Pigeon, MI · Cert 14513 · Thumb Bcorp Employee STK Ownership Plan

State charter, Fed member · FED · 13 branches

Q2 2026

Board Package

Performance Trends and Peer Comparison

Part 1Performance Trends, own institution only2
Part 2Peer Comparison, banks under $1B in assets operating in a single state3

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 operating in a single state (n=751 to 755). 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

13

Q2 2024Q2 2026peer median (50)

Asset Quality

78

Q2 2024Q2 2026peer median (50)

Profitability

85

Q2 2024Q2 2026peer median (50)

Liquidity

73

Q2 2024Q2 2026peer median

Efficiency

72

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

Thumb Bank & Trust

Pigeon, MI · Cert 14513 · Thumb Bcorp Employee STK Ownership Plan

State charter, Fed member · FED · 13 branches

Q2 2026

$673.3MAssets
$418.6MLoans
$595.8MDeposits
$64.2MEquity
Loan mix
86%RE $282.8M10%C&I $31.2M4%Consumer $13.9MQ3 2024Q2 2026
Deposit mix
70%Interest-bearing $419.6M30%Noninterest $176.2MQ3 2024Q2 2026

Return on Assets (YTD, annualized)

1.65%+22 bps YoY

Net Interest Margin (YTD, annualized)

4.29%+24 bps YoY

Efficiency Ratio (YTD, annualized)

54.31%-183 bps YoY

Tier 1 Leverage Ratio

9.44%+16 bps YoY

NIM

4.64%Q2 ’245.00%Q2 ’255.10%Q2 ’26+21%+6%

Non-interest income vs. expense

2.56%Q2 ’242.71%Q2 ’252.74%Q2 ’26+11%-1%

Year to date, annualized, through each quarter.

MetricQ3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Return on Assets1.09%1.20%1.41%1.43%1.47%1.45%1.63%1.65%+22 bps
Net Interest Margin3.40%3.28%4.07%4.05%4.10%4.08%4.18%4.29%+24 bps
Non-Interest Burden2.03%1.89%2.22%2.19%2.21%2.23%2.11%2.17%-1 bps
Loan Growth (YoY)4.94%6.91%13.58%11.36%8.90%10.96%6.21%15.84%+448 bps
Nonperforming Loans / Loans0.05%0.05%0.05%0.04%0.04%0.03%0.03%0.03%-1 bps
Allowance / Loans1.21%1.17%1.14%1.15%1.14%1.10%1.14%1.06%-10 bps
Tier 1 Leverage Ratio9.41%8.73%9.22%9.29%9.40%9.53%9.18%9.44%+16 bps
Equity / Assets9.87%8.47%9.06%9.25%9.58%9.65%9.28%9.53%+28 bps
Liquid Assets / Assets8.36%11.95%11.71%10.57%12.65%11.31%13.24%6.12%-446 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

Thumb Bank & Trust

Pigeon, MI · Cert 14513 · Peer group: banks under $1B in assets operating in a single state (n=751-755) · Thumb Bcorp Employee STK Ownership Plan

State charter, Fed member · FED · 13 branches

Q2 2026

$673.3MAssets
$418.6MLoans
$595.8MDeposits
$64.2MEquity

Return on Assets

1.66%

Rank 125 of 755

Net Interest Margin

4.29%

Rank 153 of 755

Efficiency Ratio

57.26%

Rank 216 of 755

Equity / Assets

9.53%

Rank 506 of 755

Non-interest income vs. expense

$3.9M$18.8MINCOMEEXPENSE
Unfavorable gap of $14.9M · efficiency ratio beats 72% of banks under $1B in assets operating in a single state
Bank 57.26%Peer median 64.8%Q3 2024Q2 2026Shaded: peer 25th to 75th percentile
MetricYour BankPeer 25thPeer MedianPeer 75thStandingRank8-Qtr TrendPeer Position
Return on Assets1.66%0.72%1.06%1.45%Beats 83%125 / 755
Net Interest Margin4.29%3.15%3.68%4.17%Beats 80%153 / 755
Nonperforming Loans / Loans0.03%0.09%0.42%1.05%Beats 81%147 / 751
Tier 1 Capital Ratio9.44%11.56%13.81%17.74%Beats 3%733 / 755
Equity / Assets9.53%8.93%10.56%13.13%Beats 33%506 / 755
Loans / Assets62.17%54.70%67.27%76.55%39th pctl463 / 755