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Marathon Bank

Wausau, WI · Cert 29745 · Marathon Bcorp Inc.

SI · 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=110 to 113). 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

75

Q2 2024Q2 2026peer median (50)

Asset Quality

88

Q2 2024Q2 2026peer median (50)

Profitability

18

Q2 2024Q2 2026peer median (50)

Liquidity

0

Q2 2024Q2 2026peer median

Efficiency

22

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

Marathon Bank

Wausau, WI · Cert 29745 · Marathon Bcorp Inc.

SI · FDIC · 5 branches

Q2 2026

$261.1MAssets
$219.2MLoans
$197.8MDeposits
$38.6MEquity
Loan mix
98%RE $209.7M1%C&I $3.1M0%Consumer $0.3MQ2 2025Q2 2026
Deposit mix
85%Interest-bearing $168.5M15%Noninterest $29.3MQ2 2025Q2 2026

NIM

4.10%Q2 ’244.16%Q2 ’254.78%Q2 ’26+8%+22%

Non-interest income vs. expense

2.73%Q2 ’242.58%Q2 ’252.67%Q2 ’26-21%-10%

Market Position · Wausau, WI · 2026 SOD (annual) · 3.0% share · #10 of 17 inst. · $0.2B of $5.4B

3.0% Marathon
0.6% Ozaukee
0.1% Waukesha

Executive Summary

  • Earnings: ROA of 0.78%, up 70 bps year over year; NIM at 3.24%.
  • Asset quality: problem loans at 0.03% of loans (0 bps YoY), with net recoveries of 0.27%.
  • Capital: tier 1 leverage ratio of 15.34%, up 13 bps from a year ago.
  • Funding: loans stand at 110.81% of deposits as of Q2 2026.

Financial Results

Return on Assets (YTD, annualized)

0.78%+70 bps YoY

Net Interest Margin (YTD, annualized)

3.24%+57 bps YoY

Efficiency Ratio (YTD, annualized)

73.53%-2,194 bps YoY

Tier 1 Leverage Ratio

15.34%+13 bps YoY

Year to date, annualized, through each quarter.

MetricQ2 2025Q3 2025Q4 2025Q1 2026Q2 2026YoY ΔTrend
Earnings
Return on Assets0.08%0.33%0.50%0.88%0.78%+70 bps
Return on Equity0.61%2.39%3.50%5.84%5.24%+462 bps
Net Interest Margin2.66%2.77%2.89%3.25%3.24%+57 bps
Efficiency Ratio95.47%86.70%80.94%69.87%73.53%-2,194 bps
Non-Interest Burden2.54%2.38%2.31%2.14%2.28%-26 bps
Growth
Asset Growth (YoY)7.99%13.58%13.74%5.06%9.50%+151 bps
Loan Growth (YoY)9.34%16.98%19.63%12.11%8.37%-97 bps
Deposit Growth (YoY)3.66%8.94%6.16%-3.49%7.84%+417 bps
Asset Quality
Nonperforming Loans / Loans0.03%0.09%0.09%0.09%0.03%0 bps
Net Charge-Offs / Loans-0.01%-0.01%-0.01%-0.01%-0.27%-26 bps
Allowance / Loans0.90%0.86%0.86%0.86%0.80%-11 bps
Allowance Coverage of NPLs27.3x9.4x9.6x9.7x26.5x-0.8x
Capital
Tier 1 Leverage Ratio15.21%15.04%15.27%15.35%15.34%+13 bps
Total Risk-Based Capital15.21%15.04%15.27%15.35%15.34%+13 bps
Equity / Assets15.02%14.84%14.99%15.19%14.78%-24 bps
Liquidity & Funding
Loans / Deposits110.26%109.22%114.90%117.52%110.81%+55 bps
Liquid Assets / Assets5.05%5.43%4.53%5.16%4.70%-35 bps
CRE / Total Capitaln/a388%382%375%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

Marathon Bank

Wausau, WI · Cert 29745 · Peer group: banks under $1B in assets in WI (n=110-113) · Marathon Bcorp Inc.

SI · FDIC · 5 branches

Q2 2026

$261.1MAssets
$219.2MLoans
$197.8MDeposits
$38.6MEquity

Executive Summary

  • Strongest standing: net charge-offs / loans outperforms 100% of banks under $1B in assets in WI (rank 37 of 110).
  • Widest gap: return on equity trails 89% of banks under $1B in assets in WI (rank 101 of 113).
  • Overall: at or above the peer median on 5 of 9 directional measures.

Return on Assets

0.76%

Rank 94 of 113

Net Interest Margin

3.24%

Rank 82 of 113

Efficiency Ratio

73.53%

Rank 89 of 113

Equity / Assets

14.78%

Rank 16 of 113

Non-interest income vs. expense

$1.0M$6.8MINCOMEEXPENSE
Unfavorable gap of $5.8M · efficiency ratio beats 22% of banks under $1B in assets in WI
Bank 73.53%Peer median 62.4%Q3 2024Q2 2026Shaded: peer 25th to 75th percentile
MetricYour BankPeer 25thPeer MedianPeer 75thStandingRankPeer Position
Earnings
Return on Assets0.76%0.85%1.17%1.51%Beats 17%94 / 113
Return on Equity5.13%7.70%10.77%13.67%Beats 11%101 / 113
Net Interest Margin3.24%3.19%3.59%3.89%Beats 27%82 / 113
Efficiency Ratio73.53%54.61%62.43%71.88%Beats 22%89 / 113
Asset Quality
Nonperforming Loans / Loans0.03%0.03%0.24%0.91%Beats 75%29 / 110
Net Charge-Offs / Loans0.00%n/a0.00%0.01%Beats 100%37 / 110
Capital
Tier 1 Capital Ratio15.34%11.22%12.95%15.76%Beats 71%33 / 113
Total Risk-Based Capital Ratio15.34%11.57%13.59%16.73%Beats 68%36 / 113
Equity / Assets14.78%9.17%10.74%13.13%Beats 86%16 / 113
Liquidity & Funding
Loans / Deposits110.81%76.54%86.37%98.93%93rd pctl8 / 112
Loans / Assets83.95%63.07%71.33%78.84%85th pctl17 / 113
Brokered Deposits / Depositsn/aNot reported for this institution