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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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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
    
 
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
2
1y
4
100%
-44%
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
3
1y
2
100%
-53%
1
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
4
1y
2
100%
-53%
1
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
5
1y
14
50%
58%
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
6
    
 
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
7
    
 
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
8
    
 
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
9
    
 
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
10
    
 
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
11
1y
4
100%
-44%
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
12
1y
5
100%
-41%
7
ATLAS VENTURE FUND XI L P
BO
AS
$15,900,761
654,471
2/26/24
2/28/24
$23.59
$25.25
5,698,091
-10.3
D
10b
2/28/24 - 7:13:18 pm
13
1y
5
100%
-41%
7
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
14
    
 
FARWELL WILDON
O
AS
$10,175
407
---
2/28/24
---
$25.00
163,096
-0.2
D
10b
2/28/24 - 5:06:00 pm
15
1y
4
100%
-44%
4
RHODES JASON P
DIR
AS
$11,339,780
500,789
2/21/24
2/23/24
$22.44
$22.70
920,843
-35.2
I
10b
2/23/24 - 6:59:58 pm
16
1y
5
100%
-41%
7
ATLAS VENTURE FUND XI L P
BO
AS
$848,662
37,386
---
2/23/24
---
$22.70
920,843
-3.9
I
10b
2/23/24 - 6:58:32 pm
17
1y
5
100%
-41%
7
ATLAS VENTURE FUND XI L P
BO
AS
$10,491,118
463,403
2/21/24
2/23/24
$22.44
$22.70
6,352,562
-6.8
D
10b
2/23/24 - 6:58:32 pm
18
1y
4
100%
-44%
4
RHODES JASON P
DIR
AS
$11,867,292
510,152
2/15/24
2/20/24
$22.71
$23.40
6,815,965
-7.0
I
10b
2/20/24 - 6:36:47 pm
19
1y
5
100%
-41%
7
ATLAS VENTURE FUND XI L P
BO
AS
$11,867,292
510,152
2/15/24
2/20/24
$22.71
$23.40
6,815,965
-7.0
D
10b
2/20/24 - 6:35:34 pm
20
    
 
FARWELL WILDON
O
AS
$137,710
5,493
---
2/12/24
---
$25.07
163,503
-3.3
D
10b
2/14/24 - 4:27:23 pm
21
    
 
BRUMM JOSHUA T
CEO,PR,DIR
JS
---
21,500
---
1/29/24
---
---
563,471
-3.7
D
---
1/31/24 - 4:18:42 pm
22
    
 
FARWELL WILDON
O
AS
$2,500
100
---
1/26/24
---
$25.00
168,996
-0.1
D
10b
1/26/24 - 7:49:51 pm
23
    
 
MCNEILL JONATHAN
O
OS
$490,510
20,000
---
1/26/24
$24.52
$25.14
143,618
-12.2
D
10b
1/26/24 - 7:48:29 pm
24
    
 
MCNEILL JONATHAN
O
OE
$14,600
20,000
---
1/26/24
---
$0.73
163,618
13.9
D
10b
1/26/24 - 7:48:29 pm
25
    
 
SCALZO RICHARD WILLIAM
VP,FO
OS
$316,420
13,000
---
1/26/24
---
$24.34
124,228
-9.5
D
10b
1/26/24 - 7:47:53 pm
26
    
 
SCALZO RICHARD WILLIAM
VP,FO
OE
$13,390
13,000
---
1/26/24
---
$1.03
137,228
10.5
D
10b
1/26/24 - 7:47:53 pm
27
    
 
KERSTEN DIRK
DIR,BO
JB*
$29,999,988
1,714,285
---
1/9/24
---
$17.50
6,416,793
36.5
I
---
1/11/24 - 4:31:55 pm
28
1y
14
50%
58%
2
BRUMM JOSHUA T
CEO,PR
AS
$5,032,915
269,719
1/3/24
1/4/24
$18.34
$19.05
584,971
-31.6
D
10b
1/4/24 - 9:49:44 pm
29
    
 
BRUMM JOSHUA T
CEO,PR
OE
$1,179,811
269,719
1/3/24
1/4/24
$1.03
$5.54
803,507
50.5
D
10b
1/4/24 - 9:49:44 pm
30
    
 
BESKROVNAYA OXANA
O
AS
$1,629,985
87,779
1/3/24
1/4/24
---
$18.13
156,806
-35.9
D
10b
1/4/24 - 9:48:23 pm
31
    
 
BESKROVNAYA OXANA
O
OE
$70,040
68,000
1/3/24
1/4/24
---
$1.03
221,911
44.2
D
10b
1/4/24 - 9:48:23 pm
32
    
 
MCNEILL JONATHAN
O
AS
$529,194
31,900
1/2/24
1/4/24
$13.10
$18.04
143,618
-18.2
D
10b
1/4/24 - 9:47:38 pm
33
    
 
MCNEILL JONATHAN
O
OE
$14,600
20,000
1/3/24
1/4/24
---
$0.73
161,609
14.1
D
10b
1/4/24 - 9:47:38 pm
34
    
 
SCALZO RICHARD WILLIAM
VP,FO
AS
$244,530
13,000
---
1/3/24
---
$18.81
124,228
-9.5
D
10b
1/4/24 - 9:46:58 pm
35
    
 
SCALZO RICHARD WILLIAM
VP,FO
OE
$13,390
13,000
---
1/3/24
---
$1.03
137,228
10.5
D
10b
1/4/24 - 9:46:58 pm
36
    
 
SCALZO RICHARD WILLIAM
O
AS
$28,560
2,376
---
12/14/23
---
$12.02
124,228
-1.9
D
10b
12/14/23 - 4:59:25 pm
37
    
 
FARWELL WILDON
O
AS
$28,413
2,666
12/11/23
12/12/23
---
$10.55
169,096
-1.6
D
10b
12/12/23 - 5:33:28 pm
38
    
 
SCALZO RICHARD WILLIAM
O
AS
$14,794
1,380
---
12/11/23
---
$10.72
126,604
-1.1
D
10b
12/12/23 - 5:35:13 pm
39
    
 
MCNEILL JONATHAN
O
AS
$13,346
1,245
---
12/11/23
---
$10.72
155,518
-0.8
D
10b
12/12/23 - 5:34:48 pm
40
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$17,324
1,616
---
12/11/23
---
$10.72
187,882
-0.9
D
10b
12/12/23 - 5:34:21 pm
41
1y
14
50%
58%
2
BRUMM JOSHUA T
DIR
AS
$81,311
7,585
---
12/11/23
---
$10.72
584,971
-1.3
D
10b
12/12/23 - 5:33:03 pm
42
    
 
BESKROVNAYA OXANA
O
AS
$15,726
1,467
---
12/11/23
---
$10.72
176,585
-0.8
D
10b
12/12/23 - 5:32:28 pm
43
    
 
SCALZO RICHARD WILLIAM
O
AS
$30,662
2,553
12/4/23
12/6/23
---
$12.01
127,984
-2.0
D
10b
12/6/23 - 6:13:25 pm
44
    
 
SCALZO RICHARD WILLIAM
O
JB
---
89,742
---
11/15/23
---
---
130,537
220.0
D
R
11/16/23 - 4:35:22 pm
45
    
 
MCNEILL JONATHAN
O
JB
---
96,158
---
11/15/23
---
---
156,763
158.7
D
R
11/16/23 - 4:34:50 pm
46
    
 
HIGH SUSANNA GATTI
COO
JB
---
94,893
---
11/15/23
---
---
189,498
100.3
D
R
11/16/23 - 4:30:00 pm
47
    
 
FARWELL WILDON
O
JB
---
82,512
---
11/15/23
---
---
171,762
92.5
D
R
11/16/23 - 4:29:48 pm
48
    
 
BRUMM JOSHUA T
DIR
JB
---
358,877
---
11/15/23
---
---
592,556
153.6
D
R
11/16/23 - 4:29:18 pm
49
    
 
BESKROVNAYA OXANA
O
JB
---
93,718
---
11/15/23
---
---
178,052
111.1
D
R
11/16/23 - 4:23:49 pm
50
1y
11
36%
109%
2
HIGH SUSANNA GATTI
COO
AS
$73,549
9,939
---
11/2/23
---
$7.40
94,605
-9.5
D
10b
11/2/23 - 5:16:26 pm
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