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Detailed Insider History for:
DYNE THERAPEUTICS INC: DYN
Price: 4/4/25 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
$8.28 $47.45 $8.15 $937 113 2,275 0.0% 12.8% 100.44% 0.75%
Exch Sector Industry Sub-Industry
NasdaqGS Mining Oil And Gas Extraction Crude Petroleum & Natural Gas
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#
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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
    
 
KERSTEN DIRK
DIR
AS
$1,427,063
31,300
---
8/30/24
$45.49
$46.01
400,000
-7.3
I
10b
9/4/24 - 4:05:03 pm
2
    
 
KERSTEN DIRK
DIR
AS
$6,045,783
134,261
8/28/24
8/29/24
$44.41
$45.81
431,300
-23.7
I
10b
8/30/24 - 4:05:13 pm
3
    
 
KERSTEN DIRK
DIR
AS
$6,950,453
154,900
8/26/24
8/27/24
---
$44.28
565,561
-21.5
I
10b
8/28/24 - 4:05:04 pm
4
    
 
KERSTEN DIRK
DIR
AS
$8,302,089
180,409
8/22/24
8/23/24
$45.82
$46.37
720,461
-20.0
I
10b
8/26/24 - 4:05:06 pm
5
    
 
KERSTEN DIRK
DIR
AS
$10,375,620
222,603
8/20/24
8/21/24
$45.68
$47.01
900,870
-19.8
I
10b
8/22/24 - 4:05:03 pm
6
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$124,174
2,752
---
8/19/24
$45.01
$46.00
111,022
-2.4
D
10b
8/20/24 - 4:28:01 pm
7
    
 
MCNEILL JONATHAN
O
AS
$122,054
2,705
---
8/19/24
$45.01
$46.00
132,106
-2.0
D
10b
8/20/24 - 4:27:39 pm
8
    
 
FARWELL WILDON
O
AS
$104,727
2,321
---
8/19/24
$45.01
$46.00
143,222
-1.6
D
10b
8/20/24 - 4:27:16 pm
9
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$131,304
2,910
---
8/19/24
$45.01
$46.00
145,882
-2.0
D
10b
8/20/24 - 4:26:55 pm
10
    
 
BESKROVNAYA OXANA
O
AS
$118,939
2,636
---
8/19/24
$45.01
$46.00
144,875
-1.8
D
10b
8/20/24 - 4:26:33 pm
11
    
 
KERSTEN DIRK
DIR
AS
$11,310,183
248,675
8/16/24
8/19/24
$44.52
$46.59
1,123,473
-18.1
I
10b
8/20/24 - 4:05:04 pm
12
    
 
KERSTEN DIRK
DIR
AS
$12,601,536
281,541
8/14/24
8/15/24
$43.67
$45.67
1,372,148
-17.0
I
10b
8/16/24 - 4:05:09 pm
13
    
 
KERSTEN DIRK
DIR
AS
$9,121,902
212,477
8/12/24
8/13/24
$42.08
$43.57
1,653,689
-11.4
I
10b
8/14/24 - 4:15:05 pm
14
    
 
KERSTEN DIRK
DIR
AS
$7,877,091
183,834
8/8/24
8/9/24
$40.74
$44.04
1,866,166
-9.0
I
A,10b
8/14/24 - 4:05:06 pm
15
    
 
KERSTEN DIRK
DIR
AS
$7,877,091
183,834
8/8/24
8/9/24
$40.74
$44.04
6,232,959
-2.9
I
10b
8/12/24 - 4:05:04 pm
16
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$1,403,668
40,000
6/21/24
6/24/24
$35.01
$35.33
148,792
-21.2
D
A,10b
7/3/24 - 9:00:02 pm
17
    
 
HIGH SUSANNA GATTI
COO
OE
$221,600
40,000
6/21/24
6/24/24
---
$5.54
178,579
28.9
D
A,10b
7/3/24 - 9:00:02 pm
18
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
OS
$1,334,201
40,000
---
6/12/24
$33.17
$33.70
148,792
-21.2
D
10b
6/13/24 - 9:45:04 pm
19
    
 
HIGH SUSANNA GATTI
COO
OE
$221,600
40,000
---
6/12/24
---
$5.54
188,792
26.9
D
10b
6/13/24 - 9:45:04 pm
20
    
 
BESKROVNAYA OXANA
O
AS
$66,942
2,136
---
6/11/24
---
$31.34
147,511
-1.4
D
10b
6/11/24 - 7:42:47 pm
21
    
 
FARWELL WILDON
O
AS
$82,428
2,636
---
6/11/24
---
$31.27
145,543
-1.8
D
10b
6/11/24 - 7:41:51 pm
22
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
OS
$164,582
5,270
---
6/11/24
---
$31.23
148,792
-3.4
D
10b
6/11/24 - 7:34:41 pm
23
    
 
MCNEILL JONATHAN
O
AS
$57,133
1,823
---
6/11/24
---
$31.34
134,811
-1.3
D
10b
6/11/24 - 7:34:02 pm
24
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$41,714
1,331
---
6/11/24
---
$31.34
113,774
-1.2
D
10b
6/11/24 - 7:28:44 pm
25
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
OS
$2,419,200
80,000
---
6/10/24
---
$30.24
154,062
-34.2
D
10b
6/11/24 - 7:34:41 pm
26
    
 
HIGH SUSANNA GATTI
COO
OE
$443,200
80,000
---
6/10/24
---
$5.54
234,062
51.9
D
10b
6/11/24 - 7:34:41 pm
27
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$48,066
1,590
---
6/10/24
---
$30.23
115,105
-1.4
D
10b
6/11/24 - 7:28:44 pm
28
    
 
BESKROVNAYA OXANA
O
OS
$1,002,751
30,426
---
5/20/24
$32.49
$34.08
149,647
-16.9
D
10b
5/22/24 - 9:01:04 pm
29
    
 
BESKROVNAYA OXANA
O
OE
$31,339
30,426
---
5/20/24
---
$1.03
180,073
20.3
D
10b
5/22/24 - 9:01:04 pm
30
    
 
BESKROVNAYA OXANA
O
AS
$76,469
2,705
---
5/16/24
$28.20
$28.59
149,647
-1.8
D
10b
5/17/24 - 9:07:27 pm
31
    
 
FARWELL WILDON
O
AS
$67,310
2,381
---
5/16/24
$28.20
$28.59
148,179
-1.6
D
10b
5/17/24 - 9:06:52 pm
32
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$77,402
2,738
---
5/16/24
$28.20
$28.59
154,062
-1.7
D
10b
5/17/24 - 9:05:44 pm
33
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$73,162
2,588
---
5/16/24
$28.20
$28.59
116,695
-2.2
D
10b
5/17/24 - 9:04:52 pm
34
    
 
MCNEILL JONATHAN
O
AS
$78,420
2,774
---
5/16/24
$28.20
$28.59
136,634
-2.0
D
10b
5/17/24 - 9:03:32 pm
35
    
 
COX JOHN
CEO,PR,DIR
3
---
---
---
3/25/24
---
---
5,000
---
D
A
4/4/24 - 9:07:38 pm
36
    
 
COX JOHN
DIR
3
---
---
---
3/25/24
---
---
10,000
---
D
---
3/27/24 - 4:13:54 pm
37
    
 
FARWELL WILDON
O
AS
$67,082
2,615
3/11/24
3/12/24
---
$25.58
150,560
-1.7
D
10b
3/12/24 - 9:58:16 pm
38
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$784,248
29,491
3/8/24
3/11/24
---
$25.70
156,800
-15.8
D
10b
3/13/24 - 6:04:11 am
39
    
 
MCNEILL JONATHAN
O
OS
$2,861,373
109,601
3/8/24
3/11/24
$25.46
$25.71
139,408
-44.0
D
10b
3/13/24 - 6:04:07 am
40
    
 
MCNEILL JONATHAN
O
OE
$597,351
107,825
3/8/24
3/11/24
---
$5.54
231,184
87.4
D
10b
3/13/24 - 6:04:07 am
41
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$2,329,007
88,924
3/8/24
3/11/24
---
$24.99
119,283
-42.7
D
10b
3/12/24 - 9:57:40 pm
42
1y
14
50%
58%
2
BRUMM JOSHUA T
CEO,PR,DIR
AS
$11,125,776
429,730
3/8/24
3/11/24
$25.30
$25.93
537,998
-44.4
D
10b
3/12/24 - 9:56:20 pm
43
    
 
BRUMM JOSHUA T
CEO,PR,DIR
OE
$2,289,920
413,343
3/8/24
3/11/24
---
$5.54
917,728
81.9
D
10b
3/12/24 - 9:56:20 pm
44
    
 
BESKROVNAYA OXANA
O
AS
$53,482
2,081
---
3/11/24
---
$25.70
152,352
-1.3
D
10b
3/12/24 - 9:42:33 pm
45
    
 
SCALZO RICHARD WILLIAM
VP,FO
OE
$477,836
86,252
---
3/8/24
---
$5.54
208,207
70.7
D
10b
3/12/24 - 9:57:40 pm
46
1y
14
50%
58%
2
BRUMM JOSHUA T
CEO,PR,DIR
AS
$234,873
9,086
---
3/7/24
---
$25.85
554,385
-1.6
D
10b
3/11/24 - 9:57:11 pm
47
    
 
BESKROVNAYA OXANA
O
AS
$61,342
2,373
---
3/7/24
---
$25.85
154,433
-1.5
D
10b
3/11/24 - 9:56:46 pm
48
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$41,127
1,591
---
3/7/24
---
$25.85
186,291
-0.8
D
10b
3/11/24 - 9:56:37 pm
49
    
 
FARWELL WILDON
O
AS
$256,585
9,921
---
3/7/24
$25.80
$26.20
153,175
-6.1
D
10b
3/11/24 - 9:52:27 pm
50
    
 
MCNEILL JONATHAN
O
AS
$62,919
2,434
---
3/7/24
---
$25.85
141,184
-1.7
D
10b
3/11/24 - 9:50:24 pm
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