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Dyne Therapeutics, Inc.

DYN Net buying
CIK 0001818794 #1391 in the set updated 17 Sep 2026
Bought (120 mo)
$93.57M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$408.09M
$348.22M on a plan · $46.58M straight out of an exercise
Sold at will
$13.28M
64 of 453 sales
Net
−$314.52M
+$80.29M against sales at will

By person

29 insiders · 477 transactions
11.4×

John G. Cox holds 11.4 times base salary in stock. $8.26M of shares against $721.00K in salary for 2025.

Salary from the company's own proxy. The shares are what John G. Cox last reported holding, valued at $18.88, the price Common Stock was last bought or sold at on the open market here, on 8 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Rhodes Jason P
Director
$10.00M (1)
$173.35M (114) scheduled
−$163.35M
428,946
0.2297%
$8.10M
Kersten Dirk
Director
$30.00M (2)
$136.30M (88) scheduled
−$106.30M
3,586,796
1.92%
$67.72M
Atlas Venture Fund XI, L.P. entity
10% owner
$42.83M (29) scheduled
−$42.83M
6,562,578
3.51%
$123.90M
+321.5%
Brumm Joshua T
CEO & President
$26.68M (31) scheduled
−$26.68M
537,998
0.2881%
$10.16M
VV Manager II, LLC entity
10% owner
$15.49M (2)
+$15.49M
79,921
0.0428%
$1.51M
Logos Global Management LP entity
10% owner
$13.30M (1)
+$13.30M
1,504,392
0.8056%
$28.40M
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
$12.54M (1)
+$12.54M
2,805,045
1.50%
$52.96M
Atlas Venture Opportunity Fund II, L.P. entity
10% owner
$10.00M (1)
+$10.00M
934,581
0.5005%
$17.64M
Scalzo Richard William
SVP, Head of Finance & Admin.
$8.71M (40) scheduled
−$8.71M
122,330
0.0655%
$2.31M
HIGH SUSANNA GATTI
Chief Operating Officer
$7.06M (28) scheduled
−$7.06M
131,636
0.0705%
$2.49M
McNeill Jonathan
Chief Business Officer
$5.63M (34) scheduled
−$5.63M
132,106
0.0707%
$2.49M
+563.9%
Beskrovnaya Oxana
Chief Scientific Officer
$3.50M (30) scheduled
−$3.50M
195,840
0.1049%
$3.70M
Atlas Venture Opportunity Fund I, L.P. entity
10% owner
$1.40M (2) scheduled
−$1.40M
2,306,079
1.23%
$43.54M
−2.0%
Cox John
CEO & President
$1.97M (9)
$581.33K (9) scheduled
+$1.39M
437,507
0.2343%
$8.26M
+725.5%
Farwell Wildon
Chief Medical Officer
$955.49K (21) scheduled
−$955.49K
143,222
0.0767%
$2.70M
Incerti Carlo
Director
$474.05K (1) scheduled
−$474.05K
0
0.0000%
$0.00
Kerr Douglas
Chief Medical Officer
$325.76K (11) scheduled
−$325.76K
162,564
0.0871%
$3.07M
Posner Brian S
Director
$274.84K (7)
+$274.84K
24,500
0.0131%
$462.56K
+188.2%
Lucera Erick
Chief Financial Officer
$228.68K (4) scheduled
−$228.68K
119,766
0.0641%
$2.26M
Friedl-Naderer Johanna
Chief Commercial Officer
$60.86K (11) scheduled
−$60.86K
152,897
0.0819%
$2.89M
Forbion Capital Fund IV Cooperatief U.A. entity
10% owner
6,131,079
3.28%
$115.75M
Wellington Biomedical Innovation Master Investors (Cayman) I L.P.
10% owner
1,608,785
0.8615%
$30.37M
CureDuchenne Ventures, LLC entity
10% owner
602,972
0.3229%
$11.38M
Subramanian Romesh
Chief Scientific Officer
566,249
0.3032%
$10.69M
+7.9%
Stehman-Breen Catherine
Director
115,713
0.0620%
$2.18M
+10.2%
HURWITZ EDWARD
Director
91,081
0.0488%
$1.72M
MPM BIOVENTURES 2018, L.P.
10% owner
91,081
0.0488%
$1.72M
Klein Lawrence Otto
Director
10,725
0.0057%
$202.49K
Lubner David Charles
Director
0
0.0000%
$0.00

Nothing of that kind in this period.

What was left out

Form 4 filings counted 327
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 9
Sales on a Rule 10b5-1 plan 327
Sales straight out of an exercise 62
Sales at will 64
Transactions with no price 0
Shares from compensation/vesting 51,568,564
Sales filed before the plan box existed 30
History held since 18 Sep 2020