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Letter portraitLegal landscapeQuarterYTD

Columbia Trust Bank

Pasco, WA · Cert 34257

FDIC

Q4 2005

$215.0MAssets
$148.5MLoans
$185.4MDeposits
$17.4MEquity
Loan mix
33%RE $16.6M64%C&I $31.6M3%Consumer $1.6MQ4 2004Q4 2005
Deposit mix
78%Interest-bearing $145.4M22%Noninterest $40.0MQ4 2004Q4 2005

NIM

5.38%Q4 ’035.26%Q4 ’045.62%Q4 ’05+1%-1%

Non-interest income vs. expense

2.76%Q4 ’033.02%Q4 ’043.25%Q4 ’05+17%+10%

Financial Results

Return on Assets (YTD, annualized)

0.62%-12 bps YoY

Net Interest Margin (YTD, annualized)

3.93%-4 bps YoY

Efficiency Ratio (YTD, annualized)

75.79%+678 bps YoY

Tier 1 Leverage Ratio

n/a

Year to date, annualized, through each quarter.

MetricQ4 2004Q1 2005Q2 2005Q3 2005Q4 2005YoY ΔTrend
Return on Assets0.74%0.71%0.69%0.68%0.62%-12 bps
Net Interest Margin3.98%4.44%4.38%4.17%3.93%-4 bps
Non-Interest Burden2.62%3.05%3.21%3.05%2.89%+27 bps
Loan Growth (YoY)16.31%14.80%7.13%4.74%2.61%-1,370 bps
Nonperforming Loans / Loans0.00%0.00%0.00%0.00%0.00%0 bps
Allowance / Loans1.70%1.72%1.65%1.59%1.64%-7 bps
Tier 1 Leverage Ration/an/an/an/an/an/an/a
Equity / Assets8.84%8.75%8.72%8.28%8.10%-75 bps
Liquid Assets / Assets0.87%0.98%0.83%5.94%7.84%+697 bps