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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=743 to 746). 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

75

Q2 2024Q2 2026peer median

Efficiency

71

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 $13.9MQ2 2025Q2 2026
Deposit mix
70%Interest-bearing $419.6M30%Noninterest $176.2MQ2 2025Q2 2026

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%

Market Position · Bay City, MI · 2026 SOD (annual) · 6.5% share · #4 of 7 inst. · $0.1B of $1.3B

21.3% Sanilac
17.9% Huron
6.5% Bay
14.0% Tuscola

Executive Summary

  • Earnings: ROA of 1.65%, up 22 bps year over year; NIM at 4.29%.
  • Asset quality: problem loans at 0.03% of loans (-1 bps YoY), with net charge-offs at 0.00%.
  • Capital: tier 1 leverage ratio of 9.44%, up 16 bps from a year ago.
  • Funding: loans stand at 70.26% of deposits as of Q2 2026.

Financial Results

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

Year to date, annualized, through each quarter.

MetricQ2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Earnings
Return on Assets1.43%1.47%1.45%1.63%1.65%+22 bps
Return on Equity15.98%16.13%15.76%17.25%17.36%+139 bps
Net Interest Margin4.05%4.10%4.08%4.18%4.29%+24 bps
Efficiency Ratio56.14%56.29%56.88%54.11%54.31%-183 bps
Non-Interest Burden2.19%2.21%2.23%2.11%2.17%-1 bps
Growth
Asset Growth (YoY)7.30%10.24%1.18%4.99%3.39%-391 bps
Loan Growth (YoY)11.36%8.90%10.96%6.21%15.84%+448 bps
Deposit Growth (YoY)7.01%10.45%-0.18%4.57%1.37%-564 bps
Asset Quality
Nonperforming Loans / Loans0.04%0.04%0.03%0.03%0.03%-1 bps
Net Charge-Offs / Loans0.00%0.00%0.00%0.00%0.00%0 bps
Allowance / Loans1.15%1.14%1.10%1.14%1.06%-10 bps
Allowance Coverage of NPLs28.9x30.2x34.0x36.3x39.5x+10.6x
Capital
Tier 1 Leverage Ratio9.29%9.40%9.53%9.18%9.44%+16 bps
Total Risk-Based Capital14.79%14.98%14.74%14.72%9.44%-534 bps
Equity / Assets9.25%9.58%9.65%9.28%9.53%+28 bps
Liquidity & Funding
Loans / Deposits61.48%61.23%63.31%60.96%70.26%+878 bps
Liquid Assets / Assets10.57%12.65%11.31%13.24%6.12%-446 bps
CRE / Total Capitaln/a196.00%201%221%n/an/a

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=743-746) · Thumb Bcorp Employee STK Ownership Plan

State charter, Fed member · FED · 13 branches

Q2 2026

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

Executive Summary

  • Strongest standing: return on equity outperforms 92% of banks under $1B in assets operating in a single state (rank 58 of 746).
  • Widest gap: total risk-based capital ratio trails 97% of banks under $1B in assets operating in a single state (rank 725 of 746).
  • Overall: at or above the peer median on 6 of 9 directional measures.

Return on Assets

1.66%

Rank 120 of 746

Net Interest Margin

4.29%

Rank 148 of 746

Efficiency Ratio

57.26%

Rank 219 of 746

Equity / Assets

9.53%

Rank 491 of 746

Non-interest income vs. expense

$3.9M$18.8MINCOMEEXPENSE
Unfavorable gap of $14.9M · efficiency ratio beats 71% of banks under $1B in assets operating in a single state
Bank 57.26%Peer median 64.6%Q3 2024Q2 2026Shaded: peer 25th to 75th percentile
MetricYour BankPeer 25thPeer MedianPeer 75thStandingRankPeer Position
Earnings
Return on Assets1.66%0.72%1.06%1.45%Beats 84%120 / 746
Return on Equity17.46%6.74%10.51%13.63%Beats 92%58 / 746
Net Interest Margin4.29%3.17%3.68%4.16%Beats 80%148 / 746
Efficiency Ratio57.26%55.74%64.58%75.47%Beats 71%219 / 746
Asset Quality
Nonperforming Loans / Loans0.03%0.09%0.42%1.07%Beats 80%147 / 743
Net Charge-Offs / Loans0.00%0.00%0.01%0.05%Beats 75%188 / 743
Capital
Tier 1 Capital Ratio9.44%11.55%13.75%17.60%Beats 3%725 / 746
Total Risk-Based Capital Ratio9.44%11.71%14.33%18.43%Beats 3%725 / 746
Equity / Assets9.53%8.90%10.51%13.06%Beats 34%491 / 746
Liquidity & Funding
Loans / Deposits70.26%61.31%78.27%90.78%36th pctl479 / 746
Loans / Assets62.17%53.60%66.97%76.08%40th pctl449 / 746
Brokered Deposits / Depositsn/aNot reported for this institution