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Dyne Therapeutics, Inc.

DYN Scheduled selling only

CIK 0001818794 #1391 in the set updated 17 Sep 2026

Bought (1 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (1 mo)

$247.78K

$247.78K on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 5 sales

Net

−$247.78K

$0.00 against sales at will

By person

12 insiders · 5 transactions

11.2×

John G. Cox holds 11.2 times base salary in stock. $8.11M 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

Kerr Douglas

Chief Medical Officer

—

$115.55K (2) scheduled

−$115.55K

162,564

0.0871%

$3.07M

+242.2%

Cox John

CEO & President

—

$106.82K (1) scheduled

−$106.82K

429,507

0.2300%

$8.11M

+457.8%

Friedl-Naderer Johanna

Chief Commercial Officer

—

$25.41K (2) scheduled

−$25.41K

152,897

0.0819%

$2.89M

+161.8%

Kersten Dirk

Director

—

3,586,796

1.92%

$67.72M

−42.1%

Rhodes Jason P

Director

—

428,946

0.2297%

$8.10M

−91.4%

Beskrovnaya Oxana

Chief Scientific Officer

—

195,840

0.1049%

$3.70M

+37.2%

HIGH SUSANNA GATTI

Chief Operating Officer

—

131,636

0.0705%

$2.49M

−6.4%

Scalzo Richard William

SVP, Head of Finance & Admin.

—

122,330

0.0655%

$2.31M

+22.4%

Lucera Erick

Chief Financial Officer

—

119,766

0.0641%

$2.26M

—

Posner Brian S

Director

—

24,500

0.0131%

$462.56K

+188.2%

Lubner David Charles

Director

—

0.0000%

$0.00

−100.0%

Incerti Carlo

Director

—

0.0000%

$0.00

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Cox John

8 Sep 2026

CEO & President

Sold on a plan

5,658

$18.88

$106.82K

Kerr Douglas

8 Sep 2026

Chief Medical Officer

Sold on a plan

1,290

$18.88

$24.36K

Friedl-Naderer Johanna

8 Sep 2026

Chief Commercial Officer

Sold on a plan

185

$18.88

$3.49K

Kerr Douglas

4 Sep 2026

Chief Medical Officer

Sold on a plan

3,745

$24.35

$91.19K

Friedl-Naderer Johanna

4 Sep 2026

Chief Commercial Officer

Sold on a plan

900

$24.35

$21.92K

What was left out

Form 4 filings counted 8

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 5

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 0

History held since 18 Sep 2020