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Company

Dyne Therapeutics, Inc.

DYN · CIK 0001818794

SEC FORM 4
$106,823.04

Dyne Therapeutics, Inc. (DYN)

Sale of 5,658 shares at $18.88 per share.

Reporting Person Cox John · Officer Title CEO & President · Transaction Code S

Traded Sep 8, 2026 · Disclosed Sep 8, 2026

Source: SEC Form 4 · 0001498428-26-000005 · filed 2026-09-08 · View filing →

SEC FORM 4
$24,355.20

Dyne Therapeutics, Inc. (DYN)

Sale of 1,290 shares at $18.88 per share.

Reporting Person Kerr Douglas · Officer Title Chief Medical Officer · Transaction Code S

Traded Sep 8, 2026 · Disclosed Sep 8, 2026

Source: SEC Form 4 · 0001814189-26-000005 · filed 2026-09-08 · View filing →

SEC FORM 4
$3,492.80

Dyne Therapeutics, Inc. (DYN)

Sale of 185 shares at $18.88 per share.

Reporting Person Friedl-Naderer Johanna · Officer Title Chief Commercial Officer · Transaction Code S

Traded Sep 8, 2026 · Disclosed Sep 8, 2026

Source: SEC Form 4 · 0001915598-26-000005 · filed 2026-09-08 · View filing →

SEC FORM 4
$91,190.75

Dyne Therapeutics, Inc. (DYN)

Sale of 3,745 shares at $24.35 per share.

Reporting Person Kerr Douglas · Officer Title Chief Medical Officer · Transaction Code S

Traded Sep 4, 2026 · Disclosed Sep 8, 2026

Source: SEC Form 4 · 0001814189-26-000005 · filed 2026-09-08 · View filing →

SEC FORM 4
$21,915.00

Dyne Therapeutics, Inc. (DYN)

Sale of 900 shares at $24.35 per share.

Reporting Person Friedl-Naderer Johanna · Officer Title Chief Commercial Officer · Transaction Code S

Traded Sep 4, 2026 · Disclosed Sep 8, 2026

Source: SEC Form 4 · 0001915598-26-000005 · filed 2026-09-08 · View filing →

SEC FORM 4
$33,991,850.00

Dyne Therapeutics, Inc. (DYN)

Sale of 1,359,674 shares at $25 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$11,959,425.00

Dyne Therapeutics, Inc. (DYN)

Sale of 478,377 shares at $25 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$8,061,625.00

Dyne Therapeutics, Inc. (DYN)

Sale of 322,465 shares at $25 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 14, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$131,032.08

Dyne Therapeutics, Inc. (DYN)

Sale of 4,986 shares at $26.28 per share.

Reporting Person Cox John · Officer Title CEO & President · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001498428-26-000004 · filed 2026-08-17 · View filing →

SEC FORM 4
$7,030,874.80

Dyne Therapeutics, Inc. (DYN)

Sale of 268,354 shares at $26.20 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$2,473,673.00

Dyne Therapeutics, Inc. (DYN)

Sale of 94,415 shares at $26.20 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$1,667,446.60

Dyne Therapeutics, Inc. (DYN)

Sale of 63,643 shares at $26.20 per share.

Reporting Person Rhodes Jason P · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001577014-26-000016 · filed 2026-08-17 · View filing →

SEC FORM 4
$47,225.16

Dyne Therapeutics, Inc. (DYN)

Sale of 1,797 shares at $26.28 per share.

Reporting Person Lucera Erick · Officer Title Chief Financial Officer · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001697616-26-000002 · filed 2026-08-17 · View filing →

SEC FORM 4
$40,891.68

Dyne Therapeutics, Inc. (DYN)

Sale of 1,556 shares at $26.28 per share.

Reporting Person Kerr Douglas · Officer Title Chief Medical Officer · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001814189-26-000004 · filed 2026-08-17 · View filing →

SEC FORM 4
$5,939.28

Dyne Therapeutics, Inc. (DYN)

Sale of 226 shares at $26.28 per share.

Reporting Person Friedl-Naderer Johanna · Officer Title Chief Commercial Officer · Transaction Code S

Traded Aug 13, 2026 · Disclosed Aug 17, 2026

Source: SEC Form 4 · 0001915598-26-000004 · filed 2026-08-17 · View filing →