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 S  AS  JS*  OS  OS*  3
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 JS
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Detailed Insider History for:
DYNE THERAPEUTICS INC: DYN
Price: 12/20/24 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
$23.99 $47.45 $12.06 $2,441 102 956 0.0% 12.1% 112.61% 0.77%
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
$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
2
    
 
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
3
    
 
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
4
1y
9
22%
145%
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
5
    
 
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
6
1y
9
22%
145%
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
7
    
 
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
8
    
 
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
9
    
 
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
10
1y
9
22%
145%
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
11
    
 
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
12
    
 
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
13
1y
9
22%
145%
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
14
    
 
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
15
    
 
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
16
    
 
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
17
    
 
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
18
    
 
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
19
    
 
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
20
1y
9
22%
145%
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
21
    
 
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
22
    
 
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
23
    
 
COX JOHN
CEO,PR,DIR
3
---
---
---
3/25/24
---
---
5,000
---
D
A
4/4/24 - 9:07:38 pm
24
    
 
COX JOHN
DIR
3
---
---
---
3/25/24
---
---
10,000
---
D
---
3/27/24 - 4:13:54 pm
25
    
 
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
26
1y
9
22%
145%
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
27
    
 
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
28
    
 
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
29
    
 
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
30
1y
10
40%
94%
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
31
    
 
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
32
    
 
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
33
    
 
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
34
1y
10
40%
94%
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
35
    
 
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
36
1y
9
22%
145%
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
37
    
 
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
38
    
 
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
39
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$58,757
2,273
---
3/7/24
---
$25.85
121,955
-1.8
D
10b
3/11/24 - 9:45:41 pm
40
9m
4
0%
24%
4
RHODES JASON P
DIR
AS
$1,398,347
46,534
---
3/1/24
---
$30.05
847,388
-5.2
I
10b
3/5/24 - 5:08:16 pm
41
    
 
ATLAS VENTURE OPPORTUNITY FUND I L P
BO
AS
$513,825
17,099
---
3/1/24
---
$30.05
847,388
-2.0
I
10b
3/5/24 - 5:07:00 pm
42
    
 
ATLAS VENTURE OPPORTUNITY FUND I L P
BO
AS
$884,522
29,435
---
3/1/24
---
$30.05
1,458,691
-2.0
D
10b
3/5/24 - 5:07:00 pm
43
1y
10
40%
94%
2
BRUMM JOSHUA T
CEO,PR,DIR
OS
$2,895,519
100,000
2/29/24
3/1/24
$27.50
$29.70
563,471
-15.1
D
10b
3/1/24 - 9:38:23 pm
44
    
 
BRUMM JOSHUA T
CEO,PR,DIR
OE
$554,000
100,000
2/29/24
3/1/24
---
$5.54
657,951
17.9
D
10b
3/1/24 - 9:38:23 pm
45
    
 
MCNEILL JONATHAN
O
OS
$811,865
28,528
2/29/24
3/1/24
$27.50
$29.70
143,618
-16.6
D
10b
3/1/24 - 9:37:54 pm
46
    
 
MCNEILL JONATHAN
O
OE
$20,825
28,528
2/29/24
3/1/24
---
$0.73
167,878
20.5
D
10b
3/1/24 - 9:37:54 pm
47
    
 
SCALZO RICHARD WILLIAM
VP,FO
OS
$357,296
12,740
2/29/24
3/1/24
$27.50
$28.65
124,228
-9.3
D
10b
3/1/24 - 9:37:15 pm
48
    
 
SCALZO RICHARD WILLIAM
VP,FO
OE
$13,122
12,740
2/29/24
3/1/24
---
$1.03
133,539
10.5
D
10b
3/1/24 - 9:37:15 pm
49
9m
4
0%
24%
4
RHODES JASON P
DIR
AS
$19,626,902
807,838
2/26/24
2/28/24
$23.59
$25.25
864,487
-48.3
I
10b
2/28/24 - 7:15:53 pm
50
9m
5
0%
28%
6
ATLAS VENTURE FUND XI L P
BO
AS
$3,726,142
153,367
2/26/24
2/28/24
$23.59
$25.25
864,487
-15.1
I
10b
2/28/24 - 7:13:18 pm
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