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Detailed Insider History for:
GREAT LAKES DREDGE AND DOCK CORP: GLDD
Price: 3/28/25 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
$8.84 $12.89 $6.55 $595 67 461 0.0% 1.4% 84.93% 2.50%
Exch Sector Industry Sub-Industry
NasdaqGS Construction Heavy Construction Other Than Building Construction Contractors Heavy Construction Other Than Bldg Const- Contractors
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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
    
 
ARMSTRONG DANA A
DIR
JB
---
4,833
---
3/31/25
---
---
4,833
New
D
---
4/1/25 - 8:42:33 pm
2
    
 
SHIPP EARL L
DIR
JB
---
5,057
---
3/31/25
---
---
39,117
14.8
D
---
4/1/25 - 8:39:59 pm
3
    
 
STEUERT D MICHAEL
DIR
JB
---
5,057
---
3/31/25
---
---
91,507
5.8
D
---
4/1/25 - 8:37:19 pm
4
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JS
$79,092
9,091
---
3/17/25
---
$8.70
48,681
-15.7
D
R
3/18/25 - 5:08:50 pm
5
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JB
---
24,445
---
3/17/25
---
---
68,432
55.6
D
R
3/18/25 - 5:08:50 pm
6
    
 
PETTERSON LASSE
CEO,PR,DIR
JS
$309,389
35,562
---
3/17/25
---
$8.70
960,244
-3.6
D
R
3/18/25 - 5:05:50 pm
7
    
 
PETTERSON LASSE
CEO,PR,DIR
JB
---
171,943
---
3/17/25
---
---
1,038,773
19.8
D
R
3/18/25 - 5:05:50 pm
8
    
 
KORNBLAU SCOTT LEE
VP,CFO
JS
$295,174
33,928
---
3/17/25
---
$8.70
112,039
-23.2
D
R
3/18/25 - 5:02:26 pm
9
    
 
KORNBLAU SCOTT LEE
VP,CFO
JB
---
66,794
---
3/17/25
---
---
161,428
70.6
D
R
3/18/25 - 5:02:26 pm
10
    
 
JOHANSON DAVID
VP,OO
JS
$67,651
7,776
---
3/17/25
---
$8.70
76,930
-9.2
D
R
3/18/25 - 4:55:40 pm
11
    
 
JOHANSON DAVID
VP,OO
JB
---
20,897
---
3/17/25
---
---
93,755
28.7
D
R
3/18/25 - 4:55:40 pm
12
    
 
HANSON WILLIAM H
VP
JS
$42,012
4,829
---
3/17/25
---
$8.70
52,168
-8.5
D
R
3/18/25 - 4:47:45 pm
13
    
 
HANSON WILLIAM H
VP
JB
---
12,971
---
3/17/25
---
---
62,611
26.1
D
R
3/18/25 - 4:47:45 pm
14
    
 
GUNSTEN CHRISTOPHER
VP
JS
$75,986
8,734
---
3/17/25
---
$8.70
59,669
-12.8
D
R
3/18/25 - 4:41:20 pm
15
    
 
GUNSTEN CHRISTOPHER
VP
JB
---
20,897
---
3/17/25
---
---
75,993
37.9
D
R
3/18/25 - 4:41:20 pm
16
    
 
BEYKO ELENI
VP
JS
$104,852
12,052
---
3/17/25
---
$8.70
67,365
-15.2
D
R
3/18/25 - 4:36:21 pm
17
    
 
BEYKO ELENI
VP
JB
---
24,380
---
3/17/25
---
---
85,435
39.9
D
R
3/18/25 - 4:36:21 pm
18
    
 
BAYER RYAN
VP,CAO
JS
$16,861
1,938
---
3/17/25
---
$8.70
13,336
-12.7
D
R
3/18/25 - 4:31:25 pm
19
    
 
BAYER RYAN
VP,CAO
JB
---
2,159
---
3/17/25
---
---
15,495
16.2
D
R
3/18/25 - 4:31:25 pm
20
    
 
GUNSTEN CHRISTOPHER
VP
B
$30,031
3,875
---
3/4/25
---
$7.75
61,532
6.7
D
---
3/5/25 - 5:42:48 pm
21
    
 
SHANAHAN KATHLEEN M
DIR
JB
---
2,849
---
1/15/25
---
---
70,524
4.2
D
---
1/16/25 - 4:33:26 pm
22
    
 
ARMSTRONG DANA A
DIR
3
---
---
---
1/5/25
---
---
---
---
---
---
1/8/25 - 5:00:26 pm
23
    
 
STEUERT D MICHAEL
DIR
JB
---
1,772
---
12/31/24
---
---
86,450
2.1
D
---
1/3/25 - 4:50:38 pm
24
    
 
SHIPP EARL L
DIR
JB
---
1,771
---
12/31/24
---
---
34,060
5.5
D
---
1/3/25 - 4:37:14 pm
25
    
 
DICKERSON LAWRENCE R
DIR
JB
---
4,069
---
12/31/24
---
---
86,217
5.0
D
---
1/3/25 - 4:24:39 pm
26
1y
4
75%
-17%
3
DICKERSON LAWRENCE R
DIR
S
$191,799
15,936
---
11/14/24
---
$12.04
82,148
-16.2
D
---
11/15/24 - 4:01:34 pm
27
1y
4
75%
-17%
3
DICKERSON LAWRENCE R
DIR
S
$67,118
5,323
---
11/12/24
---
$12.61
98,084
-5.1
D
---
11/13/24 - 4:19:11 pm
28
3m
1
100%
-9%
3
SHANAHAN KATHLEEN M
DIR
S
$293,542
23,238
---
11/11/24
---
$12.63
67,675
-25.6
D
---
11/12/24 - 4:57:17 pm
29
3m
1
100%
-9%
2
STEGER RONALD
DIR
S
$153,120
12,000
---
11/11/24
---
$12.76
25,404
-32.1
D
---
11/12/24 - 4:50:50 pm
30
    
 
STEUERT D MICHAEL
DIR
JB
---
1,899
---
9/30/24
---
---
84,678
2.3
D
---
10/2/24 - 4:50:49 pm
31
    
 
SHIPP EARL L
DIR
JB
---
1,899
---
9/30/24
---
---
32,289
6.2
D
---
10/2/24 - 4:41:54 pm
32
    
 
DICKERSON LAWRENCE R
DIR
JB
---
4,363
---
9/30/24
---
---
103,407
4.4
D
---
10/2/24 - 4:32:22 pm
33
1y
1
0%
45%
2
PETTERSON LASSE
CEO,PR,DIR
AS
$579,503
63,918
8/19/24
8/20/24
$9.06
$9.10
977,611
-6.1
D
10b
8/21/24 - 4:31:52 pm
34
1y
1
0%
45%
2
PETTERSON LASSE
CEO,PR,DIR
AS
$1,008,185
110,863
8/15/24
8/16/24
$9.08
$9.11
1,041,529
-9.6
D
10b
8/19/24 - 4:28:20 pm
35
    
 
PETTERSON LASSE
CEO,PR,DIR
JS
$890,000
100,000
---
7/15/24
---
$8.90
1,152,392
-8.0
D
---
7/17/24 - 4:06:30 pm
36
    
 
STEUERT D MICHAEL
DIR
JB
---
2,337
---
6/28/24
---
---
82,779
2.9
D
---
7/1/24 - 5:10:45 pm
37
    
 
SHIPP EARL L
DIR
JB
---
2,278
---
6/28/24
---
---
30,390
8.1
D
---
7/1/24 - 5:08:49 pm
38
    
 
DICKERSON LAWRENCE R
DIR
JB
---
5,232
---
6/28/24
---
---
99,044
5.6
D
---
7/1/24 - 5:01:23 pm
39
    
 
SCHIFFER VIVIENNE
VP,LO,CCO,SEC
JS
$7,533
1,070
---
5/6/24
---
$7.04
50,545
-2.1
D
---
5/7/24 - 4:43:29 pm
40
    
 
PETTERSON LASSE
CEO,PR,DIR
JS
$66,648
9,467
---
5/6/24
---
$7.04
1,252,392
-0.8
D
---
5/7/24 - 4:40:27 pm
41
    
 
KORNBLAU SCOTT LEE
VP,CFO,TR
JS
$11,799
1,676
---
5/6/24
---
$7.04
116,757
-1.4
D
---
5/7/24 - 4:35:08 pm
42
    
 
JOHANSON DAVID
VP,OO
JS
$4,541
645
---
5/6/24
---
$7.04
78,588
-0.8
D
---
5/7/24 - 4:30:43 pm
43
    
 
HANSON WILLIAM H
VP
JS
$3,421
486
---
5/6/24
---
$7.04
53,198
-0.9
D
---
5/7/24 - 4:26:56 pm
44
    
 
GUNSTEN CHRISTOPHER
VP
JS
$4,506
640
---
5/6/24
---
$7.04
57,657
-1.1
D
---
5/7/24 - 4:24:02 pm
45
    
 
BEYKO ELENI
VP
JS
$6,259
889
---
5/6/24
---
$7.04
69,935
-1.3
D
---
5/7/24 - 4:19:28 pm
46
    
 
KORNBLAU SCOTT LEE
VP,CFO,TR
JS
$141,463
19,675
---
4/25/24
---
$7.19
118,433
-14.2
D
R
4/29/24 - 4:49:26 pm
47
    
 
KORNBLAU SCOTT LEE
VP,CFO,TR
JB
---
50,000
---
4/25/24
---
---
138,108
56.7
D
R
4/29/24 - 4:49:26 pm
48
    
 
BEYKO ELENI
VP
JS
$60,175
8,088
---
4/24/24
---
$7.44
70,824
-10.2
D
---
4/25/24 - 4:12:16 pm
49
    
 
STEUERT D MICHAEL
DIR
JB
---
2,429
---
3/28/24
---
---
80,442
3.1
D
---
4/1/24 - 6:32:26 pm
50
    
 
SHIPP EARL L
DIR
JB
---
2,286
---
3/28/24
---
---
28,112
8.9
D
---
4/1/24 - 6:29:31 pm
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