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 JS
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Detailed Insider History for:
COLUMBIA BANKING SYSTEM INC: COLB
Price: 3/6/26 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
$27.30 $32.70 $19.61 $8,166 295 2,757 5.4% 4.0% 100.23% 0.55%
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
1y
1
0%
15%
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
2
    
 
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
3
    
 
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
4
    
 
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
5
    
 
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
6
    
 
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
7
    
 
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
8
    
 
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
9
    
 
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
10
    
 
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
11
    
 
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
12
    
 
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
13
    
 
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
14
    
 
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
15
    
 
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
16
    
 
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
17
    
 
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
18
    
 
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
19
    
 
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
20
    
 
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
21
    
 
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
22
    
 
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
23
    
 
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
24
    
 
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
25
    
 
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
26
    
 
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
27
    
 
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
28
    
 
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
29
    
 
MOORE DEVINE DAVID
VP,SO
JS
$28,651
965
---
2/2/26
---
$29.69
23,267
-4.0
D
R
2/4/26 - 6:59:15 pm
30
    
 
MOORE DEVINE DAVID
VP,SO
JB
$62,201
2,095
---
2/2/26
---
$29.69
24,232
9.5
D
R
2/4/26 - 6:59:15 pm
31
    
 
MERRYWELL CHRISTOPHER
VP
JS
$146,936
4,949
---
2/2/26
---
$29.69
45,963
-9.7
D
R
2/4/26 - 6:56:44 pm
32
    
 
MERRYWELL CHRISTOPHER
VP
JB
$373,381
12,576
---
2/2/26
---
$29.69
50,912
32.8
D
R
2/4/26 - 6:56:44 pm
33
    
 
DEER AARON JAMES
VP
JS
$35,361
1,191
---
2/2/26
---
$29.69
42,374
-2.7
D
R
2/4/26 - 6:54:32 pm
34
    
 
DEER AARON JAMES
VP
JB
$77,788
2,620
---
2/2/26
---
$29.69
43,565
6.4
D
R
2/4/26 - 6:54:32 pm
35
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JS
$62,646
2,110
---
2/2/26
---
$29.69
55,106
-3.7
D
R
2/4/26 - 6:53:27 pm
36
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JB
$151,211
5,093
---
2/2/26
---
$29.69
57,216
9.8
D
R
2/4/26 - 6:53:27 pm
37
    
 
ANDERSON DREW K
VP
JS
$50,770
1,710
---
2/2/26
---
$29.69
23,274
-6.8
D
R
2/4/26 - 6:52:34 pm
38
    
 
ANDERSON DREW K
VP
JB
$93,405
3,146
---
2/2/26
---
$29.69
24,984
14.4
D
R
2/4/26 - 6:52:34 pm
39
1m
1
100%
-4%
2
GARDNER STEVEN R
DIR
S
$403,927
13,725
---
1/30/26
---
$29.43
---
All
I
---
2/3/26 - 5:13:20 pm
40
    
 
DEER AARON JAMES
VP
JS
$22,000
1,101
---
1/20/26
---
$28.35
40,945
-2.6
D
R
1/22/26 - 6:13:06 pm
41
    
 
NAMDAR FRANK
VP
JS
$46,834
2,231
---
1/20/26
---
$28.35
31,163
-6.7
D
R
1/22/26 - 6:12:30 pm
42
    
 
MOORE DEVINE DAVID
VP,SO
JS
$17,804
888
---
1/20/26
---
$28.35
22,137
-3.9
D
R
1/22/26 - 6:11:48 pm
43
    
 
OGNALL ANDREW H
VP
JS
$38,358
1,912
---
1/20/26
---
$28.35
72,356
-2.6
D
R
1/22/26 - 6:11:00 pm
44
    
 
BARUFFI KUMI YAMAMOTO
VP,GC,SEC
JS
$42,752
2,140
---
1/20/26
---
$28.35
52,123
-3.9
D
R
1/22/26 - 6:10:10 pm
45
    
 
ANDERSON DREW K
VP
JS
$31,582
1,504
---
1/20/26
---
$28.35
21,838
-6.4
D
R
1/22/26 - 6:09:25 pm
46
    
 
NIXON TORRAN B
VP
JS
$109,800
5,590
---
1/20/26
---
$28.35
99,279
-5.3
D
R
1/22/26 - 6:08:39 pm
47
    
 
MERRYWELL CHRISTOPHER
VP
JS
$99,112
5,056
---
1/20/26
---
$28.35
38,336
-11.7
D
R
1/22/26 - 6:07:48 pm
48
    
 
STEIN CLINT
CB,PR,CEO,DIR
JS
$375,638
19,565
---
1/20/26
---
$28.35
123,396
-13.7
D
R
1/22/26 - 6:06:04 pm
49
    
 
SEDA IVAN A
VP,CFO
3
---
---
---
12/31/25
---
---
---
---
---
R
12/31/25 - 5:59:08 pm
50
    
 
LAKELY BROCK
VP,CAO
3
---
---
---
11/20/25
---
---
10,860
---
D
R
12/1/25 - 8:03:41 pm
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