Insider Stock Trading History of Nelson Mark W


The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Nelson Mark W since year 2005. The trader's CIK number is 1202458. At the time of this reporting, Nelson Mark W is the Executive Vice Presi of Columbia Banking System Inc . (stock ticker symbol COLB). See this page for all insider trading activities at Columbia Banking System Inc .


Stock purchases, sales, and option exercises reported by insider Nelson Mark W since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2008-03-03 COLB Columbia Banking System Inc Option Ex 10,500 10.68 112,140
2008-03-03 COLB Columbia Banking System Inc Sale 1,772 23.54 41,714
2007-01-03 COLB Columbia Banking System Inc Buy 95 31.61 3,002
2006-06-30 COLB Columbia Banking System Inc Buy 114 26.40 3,009
2005-06-30 COLB Columbia Banking System Inc Buy 136 22.16 3,013
2006-01-03 COLB Columbia Banking System Inc Buy 136 21.92 2,981
2005-06-30 COLB Columbia Banking System Inc Buy 136 22.16 3,013
2005-06-30 COLB Columbia Banking System Inc Buy 136 22.16 3,013
2006-01-03 COLB Columbia Banking System Inc Buy 136 21.92 2,981
2004-12-31 COLB Columbia Banking System Inc Buy 136 22.16 3,013
2004-12-31 COLB Columbia Banking System Inc Buy 136 22.16 3,013

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Nelson Mark W (Executive Vice Presi of Columbia Banking System Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.