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 JS
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Detailed Insider History for:
COLUMBIA BANKING SYSTEM INC: COLB
Price: 2/6/26 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
$32.07 $32.23 $19.61 $9,593 295 2,709 4.6% 3.0% 99.17% 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
    
 
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
2
    
 
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
3
    
 
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
4
    
 
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
5
    
 
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
6
    
 
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
7
    
 
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
8
    
 
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
9
    
 
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
10
    
 
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
11
    
 
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
12
    
 
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
13
    
 
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
14
    
 
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
15
    
 
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
16
    
 
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
17
    
 
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
18
    
 
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
19
    
 
GARDNER STEVEN R
DIR
S
$403,927
13,725
---
1/30/26
---
$29.43
---
All
I
---
2/3/26 - 5:13:20 pm
20
    
 
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
21
    
 
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
22
    
 
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
23
    
 
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
24
    
 
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
25
    
 
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
26
    
 
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
27
    
 
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
28
    
 
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
29
    
 
SEDA IVAN A
VP,CFO
3
---
---
---
12/31/25
---
---
---
---
---
R
12/31/25 - 5:59:08 pm
30
    
 
LAKELY BROCK
VP,CAO
3
---
---
---
11/20/25
---
---
10,860
---
D
R
12/1/25 - 8:03:41 pm
31
    
 
COLUMBIA BANKING SYSTEM INC
VP,CAO
3
---
---
---
11/20/25
---
---
10,860
---
D
R
12/1/25 - 5:40:33 pm
32
    
 
STUDENMUND JAYNIE M
DIR
JB
---
17,858
8/31/25
9/2/25
---
---
17,858
New
D
R
9/3/25 - 9:41:31 pm
33
    
 
MITCHELL M CHRISTIAN
DIR
JB
---
37,960
8/31/25
9/2/25
---
---
37,960
New
D
R
9/3/25 - 9:31:11 pm
34
    
 
GARDNER STEVEN R
DIR
JB
---
338,221
---
8/31/25
---
---
338,221
New
I
---
9/3/25 - 9:47:05 pm
35
    
 
GARDNER STEVEN R
DIR
JB
---
245,875
---
8/31/25
---
---
245,875
New
D
---
9/3/25 - 9:47:05 pm
36
    
 
STUDENMUND JAYNIE M
DIR
JB
---
3,843
---
8/31/25
---
---
3,843
New
I
R
9/3/25 - 9:41:31 pm
37
    
 
STUDENMUND JAYNIE M
DIR
3
---
---
---
8/31/25
---
---
---
---
---
---
9/3/25 - 7:49:57 pm
38
    
 
MITCHELL M CHRISTIAN
DIR
3
---
---
---
8/31/25
---
---
---
---
---
---
9/3/25 - 7:46:12 pm
39
    
 
GARDNER STEVEN R
DIR
3
---
---
---
8/31/25
---
---
---
---
---
---
9/3/25 - 7:43:01 pm
40
    
 
GIEM JUDI
HR
3
---
---
---
6/2/25
---
---
---
---
---
---
6/9/25 - 4:53:27 pm
41
    
 
POPE MARIA M
DIR
JB
---
3,382
---
5/15/25
---
---
47,569
7.7
D
---
5/16/25 - 9:53:06 pm
42
    
 
FINKELSTEIN MARK A
DIR
JB
---
3,382
---
5/15/25
---
---
31,605
12.0
D
---
5/16/25 - 9:52:55 pm
43
    
 
FORREST ERIC
DIR
JB
---
3,382
---
5/15/25
---
---
32,402
11.7
D
---
5/16/25 - 9:52:44 pm
44
    
 
LUND RANDAL LEE
DIR
JB
---
3,382
---
5/15/25
---
---
23,714
16.6
D
---
5/16/25 - 9:52:34 pm
45
    
 
MACHUCA LUIS
DIR
JB
---
3,382
---
5/15/25
---
---
26,004
15.0
D
---
5/16/25 - 9:52:22 pm
46
    
 
NUMATA S MAE FUJITA
DIR
JB
---
3,382
---
5/15/25
---
---
37,113
10.0
D
---
5/16/25 - 9:52:12 pm
47
    
 
SCHULTZ JOHN F
DIR
JB
---
3,382
---
5/15/25
---
---
49,435
7.3
D
---
5/16/25 - 9:52:01 pm
48
    
 
SEATON ELIZABETH WHITEHEAD
DIR
JB
---
3,382
---
5/15/25
---
---
32,566
11.6
D
---
5/16/25 - 9:51:50 pm
49
    
 
TERRY HILLIARD C III
DIR
JB
---
3,382
---
5/15/25
---
---
51,565
7.0
D
---
5/16/25 - 9:51:39 pm
50
    
 
VARNADO ANDDRIA
DIR
JB
---
3,382
---
5/15/25
---
---
26,945
14.4
D
---
5/16/25 - 9:51:28 pm
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