Insider Stock Trading History of Baruffi Kumi Yamamoto


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 Baruffi Kumi Yamamoto since year 2005. The trader's CIK number is 1619728. At the time of this reporting, Baruffi Kumi Yamamoto is the EVP and General Counsel 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 Baruffi Kumi Yamamoto since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2019-01-02 COLB Columbia Banking System Inc Buy 210 32.66 6,858
2018-07-05 COLB Columbia Banking System Inc Buy 374 36.81 13,766
2018-01-08 COLB Columbia Banking System Inc Buy 174 36.63 6,373

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 Baruffi Kumi Yamamoto (EVP and General Counsel of Columbia Banking System Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.