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$DYN All transactions

Dyne Therapeutics, Inc.

A

$ Value

$0

Shares

180,000

Price

$0

Filed

Feb 17

Insider

Name

Cox John

Title

CEO & President

CIK

0001498428

Roles

Director Officer

Transaction Details

Transaction Date

2026-02-12

Code

A

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

376,877

Footnotes

Consists of shares of Common Stock issuable under 180,000 restricted stock units ("RSUs"). Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs are scheduled to vest in equal quarterly installments over four years with the first installment vesting on May 12, 2026. | Includes 288,976 unvested RSUs. | These shares are held in a trust for the benefit of a child of the Reporting Person. | This option was granted on February 12, 2026. The shares underlying the option are scheduled to vest over four years in equal monthly installments through February 12, 2030.

Filing Info

Accession No.

0001193125-26-055075

Form Type

4

Issuer CIK

0001818794

Cox John's History

Date Ticker Type Value
2026-03-05 DYN $41K
2026-02-12 DYN A $0
2026-02-12 DYN A $0
2025-12-05 DYN $55K
2025-09-05 DYN $35K
2025-07-16 DYN A $0
2025-07-15 DYN G $0
2025-07-15 DYN G $0
2025-07-15 DYN G $0
2025-07-15 DYN G $0

Other Insiders at DYN (90d)

Insider Bought Sold Last
Posner Brian S $118K 2026-03-30
Cox John
CEO & President
$41K 2026-03-05
Rhodes Jason P $16.5M 2026-04-22
Lucera Erick
Chief Financial Officer
$107K 2026-04-01
Kerr Douglas
Chief Medical Officer
$13K 2026-03-05
Kersten Dirk $24.7M 2026-04-22
Friedl-Naderer Johanna
Chief Commercial Officer
$2K 2026-03-05