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 JS
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Detailed Insider History for:
COLUMBIA BANKING SYSTEM INC: COLB
Price: 3/20/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$26.14 $32.70 $19.61 $7,726 296 2,836 5.6% 4.1% 100.18% 0.56%
Exch Sector Industry Sub-Industry
NasdaqGS Finance, Insurance, And Real Estate Depository Institutions State Commercial Banks
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JS
$24,578
937
---
3/13/26
---
$26.23
53,715
-1.7
D
A
3/20/26 - 7:26:53 pm
2
    
 
LAKELY BROCK
VP,CAO
JS
$5,535
211
---
3/13/26
---
$26.23
11,104
-1.9
D
A
3/20/26 - 7:25:30 pm
3
    
 
STEIN CLINT
CB,CEO,PR,DIR
JS
$187,571
7,151
---
3/13/26
---
$26.23
151,584
-4.5
D
R
3/17/26 - 8:48:47 pm
4
    
 
STEIN CLINT
CB,CEO,PR,DIR
JB
$476,625
18,171
---
3/13/26
---
$26.23
158,735
12.9
D
R
3/17/26 - 8:48:47 pm
5
    
 
OGNALL ANDREW H
VP
JS
$24,945
951
---
3/13/26
---
$26.23
74,132
-1.3
D
R
3/17/26 - 8:45:59 pm
6
    
 
OGNALL ANDREW H
VP
JB
$62,454
2,381
---
3/13/26
---
$26.23
75,083
3.3
D
R
3/17/26 - 8:45:59 pm
7
    
 
NIXON TORRAN B
VP
JS
$52,512
2,002
---
3/13/26
---
$26.23
101,240
-1.9
D
R
3/17/26 - 8:43:18 pm
8
    
 
NIXON TORRAN B
VP
JB
$131,491
5,013
---
3/13/26
---
$26.23
103,242
5.1
D
R
3/17/26 - 8:43:18 pm
9
    
 
NAMDAR FRANK
VP
JS
$35,856
1,367
---
3/13/26
---
$26.23
31,923
-4.1
D
R
3/17/26 - 8:39:19 pm
10
    
 
NAMDAR FRANK
VP
JB
$73,969
2,820
---
3/13/26
---
$26.23
33,290
9.3
D
R
3/17/26 - 8:39:19 pm
11
    
 
MOORE DEVINE DAVID
VP,SO
JS
$9,862
376
---
3/13/26
---
$26.23
22,508
-1.6
D
R
3/17/26 - 8:35:17 pm
12
    
 
MOORE DEVINE DAVID
VP,SO
JB
$24,656
940
---
3/13/26
---
$26.23
22,884
4.3
D
R
3/17/26 - 8:35:17 pm
13
    
 
MERRYWELL CHRISTOPHER
VP
JS
$51,752
1,973
---
3/13/26
---
$26.23
44,067
-4.3
D
R
3/17/26 - 8:33:52 pm
14
    
 
MERRYWELL CHRISTOPHER
VP
JB
$131,491
5,013
---
3/13/26
---
$26.23
46,040
12.2
D
R
3/17/26 - 8:33:52 pm
15
    
 
LAKELY BROCK
VP,CAO
S
$5,535
211
---
3/13/26
---
$26.23
11,104
-1.9
D
R
3/17/26 - 8:31:01 pm
16
    
 
LAKELY BROCK
VP,CAO
JB
$22,191
846
---
3/13/26
---
$26.23
11,315
8.1
D
R
3/17/26 - 8:31:01 pm
17
    
 
DEER AARON JAMES
VP
JS
$16,184
617
---
3/13/26
---
$26.23
41,875
-1.5
D
R
3/17/26 - 8:27:37 pm
18
    
 
DEER AARON JAMES
VP
JB
$41,102
1,567
---
3/13/26
---
$26.23
42,492
3.8
D
R
3/17/26 - 8:27:37 pm
19
--
--
--
--
1
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
S
$24,578
937
---
3/13/26
---
$26.23
53,715
-1.7
D
R
3/17/26 - 8:26:13 pm
20
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JB
$62,454
2,381
---
3/13/26
---
$26.23
54,652
4.6
D
R
3/17/26 - 8:26:13 pm
21
    
 
ANDERSON DREW K
VP
JS
$31,869
1,215
---
3/13/26
---
$26.23
21,969
-5.2
D
R
3/17/26 - 8:24:10 pm
22
    
 
ANDERSON DREW K
VP
JB
$65,732
2,506
---
3/13/26
---
$26.23
23,184
12.1
D
R
3/17/26 - 8:24:10 pm
23
1y
1
0%
11%
2
NIXON TORRAN B
VP
AS
$127,932
4,481
3/3/26
3/4/26
$28.25
$28.85
98,229
-4.4
D
10b
3/5/26 - 4:27:54 pm
24
    
 
STEIN CLINT
CB,PR,CEO,DIR
JS
$278,497
9,789
---
3/1/26
---
$28.45
140,564
-6.5
D
---
3/2/26 - 9:09:14 pm
25
    
 
OGNALL ANDREW H
VP
JS
$37,099
1,304
---
3/1/26
---
$28.45
72,702
-1.8
D
---
3/2/26 - 9:06:55 pm
26
    
 
NIXON TORRAN B
VP
JS
$84,781
2,980
---
3/1/26
---
$28.45
102,710
-2.8
D
---
3/2/26 - 9:05:50 pm
27
    
 
NAMDAR FRANK
VP
JS
$51,438
1,808
---
3/1/26
---
$28.45
30,470
-5.6
D
---
3/2/26 - 9:04:51 pm
28
    
 
MERRYWELL CHRISTOPHER
VP
JS
$91,894
3,230
---
3/1/26
---
$28.45
41,027
-7.3
D
---
3/2/26 - 9:03:26 pm
29
    
 
LAKELY BROCK
VP,CAO
JS
$11,124
391
---
3/1/26
---
$28.45
10,469
-3.6
D
---
3/2/26 - 9:02:04 pm
30
    
 
MOORE DEVINE DAVID
VP,SO
JS
$23,841
838
---
3/1/26
---
$28.45
21,944
-3.7
D
---
3/2/26 - 9:00:12 pm
31
    
 
DEER AARON JAMES
VP
JS
$26,117
918
---
3/1/26
---
$28.45
40,925
-2.2
D
---
3/2/26 - 8:59:06 pm
32
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JS
$51,182
1,799
---
3/1/26
---
$28.45
52,271
-3.3
D
---
3/2/26 - 8:57:16 pm
33
    
 
ANDERSON DREW K
VP
JS
$51,438
1,808
---
3/1/26
---
$28.45
20,678
-8.0
D
---
3/2/26 - 8:52:53 pm
34
    
 
STEIN CLINT
CB,PR,CEO,DIR
JS
$123,504
3,922
---
2/15/26
---
$31.49
150,353
-2.5
D
---
2/18/26 - 6:34:53 pm
35
    
 
OGNALL ANDREW H
VP
JS
$29,317
931
---
2/15/26
---
$31.49
74,006
-1.2
D
---
2/18/26 - 6:33:45 pm
36
    
 
NIXON TORRAN B
VP
JS
$59,988
1,905
---
2/15/26
---
$31.49
105,690
-1.8
D
---
2/18/26 - 6:32:23 pm
37
    
 
NAMDAR FRANK
VP
JS
$36,812
1,169
---
2/15/26
---
$31.49
32,278
-3.5
D
---
2/18/26 - 6:31:05 pm
38
    
 
MOORE DEVINE DAVID
VP,SO
JS
$15,273
485
---
2/15/26
---
$31.49
22,782
-2.1
D
---
2/18/26 - 6:29:37 pm
39
    
 
MERRYWELL CHRISTOPHER
VP
JS
$53,722
1,706
---
2/15/26
---
$31.49
44,257
-3.7
D
---
2/18/26 - 6:28:34 pm
40
    
 
DEER AARON JAMES
VP
JS
$16,721
531
---
2/15/26
---
$31.49
41,843
-1.3
D
---
2/18/26 - 6:27:32 pm
41
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JS
$32,624
1,036
---
2/15/26
---
$31.49
54,070
-1.9
D
---
2/18/26 - 6:26:09 pm
42
    
 
ANDERSON DREW K
VP
JS
$24,814
788
---
2/15/26
---
$31.49
22,486
-3.4
D
---
2/18/26 - 6:25:04 pm
43
    
 
STEIN CLINT
CB,PR,CEO,DIR
JS
$594,869
20,036
---
2/2/26
---
$29.69
140,940
-12.4
D
R
2/4/26 - 7:03:59 pm
44
    
 
STEIN CLINT
CB,PR,CEO,DIR
JB
$1,511,666
50,915
---
2/2/26
---
$29.69
162,928
45.5
D
R
2/4/26 - 7:03:59 pm
45
    
 
OGNALL ANDREW H
VP
JS
$57,272
1,929
---
2/2/26
---
$29.69
74,937
-2.5
D
R
2/4/26 - 7:02:48 pm
46
    
 
OGNALL ANDREW H
VP
JB
$133,902
4,510
---
2/2/26
---
$29.69
76,866
6.2
D
R
2/4/26 - 7:02:48 pm
47
    
 
NIXON TORRAN B
VP
JS
$164,126
5,528
---
2/2/26
---
$29.69
107,595
-4.9
D
R
2/4/26 - 7:02:08 pm
48
    
 
NIXON TORRAN B
VP
JB
$411,028
13,844
---
2/2/26
---
$29.69
113,123
13.9
D
R
2/4/26 - 7:02:08 pm
49
    
 
NAMDAR FRANK
VP
JS
$70,751
2,383
---
2/2/26
---
$29.69
33,447
-6.7
D
R
2/4/26 - 7:00:50 pm
50
    
 
NAMDAR FRANK
VP
JB
$138,563
4,667
---
2/2/26
---
$29.69
35,830
15.0
D
R
2/4/26 - 7:00:50 pm
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