2/29/08 14:08  | 1/18/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.d | 100 | 11.77 | 3 | 8 | 12 | 79 | D | -27 | -28 | -24 | -20 | -5 | -4 | -2 | -2 | -2 | -10 | -5 | 15 | -40 | -66 | 
1/10/08 21:45  | 1/9/08  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.dm | 108 | 12.27 | 3 | 9 | 13 | 79 | D | -7 | -23 | -6 | -21 | -11 | -13 | -12 | -6 | -5 | -8 | -9 | -16 | -61 | -58 | 
7/5/07 17:21  | 7/3/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.dm | 108 | 12.31 | 2 | 9 | 13 | 79 | D | 24 | -20 | -15 | -12 | -3 | 0 | 3 | -1 | 0 | -3 | -10 | 13 | 0 | -32 | 
3/2/07 13:03  | 1/18/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.d | 100 | 11.77 | 2 | 8 | 12 | 79 | D | 47 | 3 | 11 | 3 | 0 | -3 | -6 | -2 | 0 | -2 | 0 | -10 | -4 | -30 | 
1/19/07 19:55  | 1/18/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.d | 100 | 11.77 | 2 | 8 | 12 | 79 | D | 47 | 19 | 3 | 3 | 0 | -4 | -2 | -3 | -1 | -2 | 2 | -4 | -18 | -29 | 
1/16/07 15:55  | 6/30/06  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.ad | 12 | 26.40 | 3 | 0 | 1 | 74 | D | 49 | 23 | 6 | 9 | 3 | 0 | 1 | 1 | -2 | -2 | 2 | -2 | -18 | -28 | 
1/5/07 17:30  | 1/3/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.ad | 7 | 31.61 | 3 | 0 | 0 | 64 | D | 46 | 21 | 2 | 12 | 0 | 3 | 1 | -3 | 1 | 2 | 0 | -3 | -14 | -17 | 
1/5/07 15:30  | 1/3/07  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.d | 7 | 31.61 | 3 | 0 | 0 | 54 | D | 46 | 21 | 2 | 12 | 0 | 3 | 1 | -3 | -2 | 0 | -1 | -4 | -15 | -19 | 
7/3/06 11:53  | 6/30/06  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.dm | 16 | 25.20 | 2 | 1 | 1 | 59 | M | 76 | 54 | 29 | 12 | 14 | 15 | 13 | 11 | -5 | -9 | -18 | -14 | -5 | -20 | 
3/2/06 13:58  | 1/3/06  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.dm | 7 | 22.05 | 2 | 0 | 1 | 59 | 4 |  |  |  |  |  |  |  |  | 0 | -1 | 2 | -1 | -8 | 1 | 
1/4/06 15:40  | 1/3/06  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.dm | 7 | 22.05 | 1 | 0 | 1 | 59 | 4 |  |  |  |  |  |  |  |  | -1 | 0 | 9 | 16 | 19 | 21 | 
7/5/05 19:23  | 6/30/05  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.d | 4 | 22.16 | 1 | 0 | 0 | 59 | M | 43 | 12 | -2 | 2 | -1 | 0 | -3 | -3 | -3 | 5 | 10 | 9 | 19 | 50 | 
1/4/05 17:28  | 12/31/04  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.d | 3 | 19.73 | 1 | 0 | 0 | 58 | M | 105 | 20 | 11 | 3 | 0 | -3 | -4 | -5 | 0 | -1 | -2 | -2 | -1 | 21 | 
8/3/04 13:28  | 8/2/04  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.d | 1 | 21.36 | 1 | 0 | 0 | 58 | I | 89 | 23 | 3 | 1 | 0 | -3 | 0 | -3 | -1 | -4 | 5 | 14 | 10 | 25 | 
7/6/04 17:10  | 7/6/04  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.d | 5 | 18.80 | 2 | 0 | 0 | 58 | D | 76 | 27 | 7 | -15 | 8 | 3 | 0 | 1 | -1 | -1 | -5 | 8 | 13 | 11 | 
1/7/04 17:10  | 12/31/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P | 2 | 16.21 | 1 | 0 | 0 | 56 | M | 77 | 73 | 21 | 18 | 12 | 6 | 3 | 3 | 0 | 0 | 3 | 16 | 3 | 18 | 
12/12/03 17:06  | 12/12/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.a | 2 | 22.35 | 1 | 0 | 0 | 55 | D | 72 | 64 | 21 | 17 | 10 | 8 | 5 | 3 | -6 | -4 | -2 | 15 | 2 | 21 | 
12/12/03 17:04  | 12/12/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.a | 2 | 22.35 | 1 | 0 | 0 | 55 | D | 72 | 64 | 21 | 17 | 10 | 8 | 5 | 3 | -6 | -4 | -2 | 15 | 2 | 21 | 
11/13/03 16:58  | 9/30/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P | 1 | 16.76 | 1 | 0 | 0 | 55 | I | 52 | 55 | 19 | 8 | 9 | 6 | 0 | 0 | -1 | 1 | 13 | 20 | 12 | 37 | 
9/10/03 11:36  | 9/9/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P | 1 | 18.80 | 1 | 0 | 0 | 55 | D | 42 | 67 | 42 | 4 | 4 | 1 | 2 | -1 | -2 | 0 | 3 | 13 | 40 | 41 | 
7/28/03 13:14  | 7/1/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J | WA | DO | P,CEO | P.a | 2 | 11.62 | 1 | 0 | 0 | 62 | D | 48 | 55 | 38 | 21 | 0 | -3 | -5 | -4 | 1 | 4 | -3 | 6 | 29 | 31 | 
7/28/03 13:08  | 6/10/03  | COLB | Columbia Banking System Inc | WA | Financ | StBnk | State Commercial Banks | Dressel Melanie J |  | DO | P,CEO | P.a | 2 | 17.80 | 1 | 0 | 0 | 55 | M | 48 | 55 | 38 | 21 | 0 | -3 | -5 | -4 | 1 | 4 | -3 | 6 | 29 | 31 |