Dudediligence.

Dyne Therapeutics, Inc

DYNNASDAQ · Pharmaceutical Preparations
Write an idea

Insiders

Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$175.0M

86 notices · 7,955,776 sh

Oct 2025 to Oct 2026

Reported ·

$65.1M

82 sales · 7 buys · $274,840 bought

Oct 2025 to Jun 2026

The two figures cover different periods.

All 82 reported sales carry the 10b5-1 box. Together they are 1.79% of the shares on issue.

PLANNED · FORM 144Oct 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-09-08: Cox John, Form 1442026-09-08: Kerr Douglas, Form 1442026-09-04: Kerr Douglas, Form 1442026-08-14: Atlas Venture Opportunity Fund I, LP, Form 1442026-08-14: Atlas Venture Fund XI, LP, Form 1442026-08-14: Atlas Venture Opportunity Fund II, LP, Form 1442026-08-13: Cox John, Form 1442026-08-13: Lucera Erick, Form 1442026-08-13: Kerr Douglas, Form 1442026-08-13: Atlas Venture Opportunity Fund II, LP, Form 1442026-08-13: Atlas Venture Fund XI, LP, Form 1442026-08-13: Atlas Venture Opportunity Fund I, LP, Form 1442026-07-27: ForDyne B.V., Form 1442026-07-07: ATLAS VENTURE ASSOCIATES XI, L.P., Form 1442026-07-07: Atlas Venture Opportunity Fund I, LP, Form 1442026-07-07: Atlas Venture Fund XI, LP, Form 1442026-07-07: Atlas Venture Opportunity Fund II, LP, Form 1442026-07-06: Atlas Venture Opportunity Fund I, LP, Form 1442026-07-06: Atlas Venture Fund XI, LP, Form 1442026-07-06: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-29: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-29: Atlas Venture Fund XI, LP, Form 1442026-06-29: Atlas Venture Opportunity Fund I, LP, Form 1442026-06-26: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-26: Atlas Venture Fund XI, LP, Form 1442026-06-26: Atlas Venture Opportunity Fund I, LP, Form 1442026-06-25: Lucera Erick, Form 1442026-06-25: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-25: Atlas Venture Opportunity Fund I, LP, Form 1442026-06-25: Atlas Venture Fund XI, LP, Form 1442026-06-24: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-24: Atlas Venture Opportunity Fund I, LP, Form 1442026-06-24: Atlas Venture Fund XI, LP, Form 1442026-06-23: Atlas Venture Opportunity Fund I, LP, Form 1442026-06-23: Atlas Venture Opportunity Fund II, LP, Form 1442026-06-22: Atlas Venture Fund XI, LP, Form 1442026-06-17: ForDyne B.V., Form 1442026-06-16: Cox John, Form 1442026-05-13: Cox John, Form 1442026-05-13: Lucera Erick, Form 1442026-05-06: Atlas Venture Fund XI, LP, Form 1442026-05-06: Atlas Venture Opportunity Fund II, LP, Form 1442026-05-06: Atlas Venture Associates XI, LP, Form 1442026-05-06: Atlas Venture Opportunity Fund I, LP, Form 1442026-05-05: Atlas Venture Fund XI, LP, Form 1442026-05-05: Atlas Venture Opportunity Fund II, LP, Form 1442026-05-05: Atlas Venture Associates XI, LP, Form 1442026-05-05: Atlas Venture Opportunity Fund I, LP, Form 1442026-05-04: Atlas Venture Opportunity Fund I, LP, Form 1442026-05-04: Atlas Venture Fund XI, LP, Form 1442026-05-04: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-29: Atlas Venture Associates XI, LP, Form 1442026-04-28: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-28: Atlas Venture Fund XI, LP, Form 1442026-04-28: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-28: Atlas Venture Associates XI, LP, Form 1442026-04-27: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-27: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-27: Atlas Venture Fund XI, LP, Form 1442026-04-27: Atlas Venture Associates XI, LP, Form 1442026-04-24: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-24: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-24: Atlas Venture Fund XI, LP, Form 1442026-04-24: Atlas Venture Associates XI, LP, Form 1442026-04-23: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-23: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-23: Atlas Venture Fund XI, LP, Form 1442026-04-23: Atlas Venture Associates XI, LP, Form 1442026-04-22: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-22: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-22: Atlas Venture Fund XI, LP, Form 1442026-04-22: Atlas Venture Associates XI, LP, Form 1442026-04-21: Atlas Venture Fund XI, LP, Form 1442026-04-21: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-21: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-21: Atlas Venture Associates XI, LP, Form 1442026-04-20: Atlas Venture Fund XI, LP, Form 1442026-04-20: Atlas Venture Opportunity Fund I, LP, Form 1442026-04-20: Atlas Venture Opportunity Fund II, LP, Form 1442026-04-20: Atlas Venture Associates XI, LP, Form 1442026-04-01: Lucera Erick, Form 1442026-03-11: ForDyne B.V., Form 1442026-03-09: ForDyne B.V., Form 1442026-03-05: Cox John, Form 1442025-12-05: Kerr Douglas, Form 1442025-12-05: Cox John, Form 1442025-12-05: Friedl-Naderer Johanna, sold2025-12-05: Kerr Douglas, sold2025-12-05: Cox John, sold2026-03-05: Cox John, sold2026-03-05: Kerr Douglas, sold2026-03-05: Friedl-Naderer Johanna, sold2026-03-06: Posner Brian S, bought2026-03-09: Kersten Dirk, sold2026-03-11: Kersten Dirk, sold2026-03-11: Posner Brian S, bought2026-03-30: Posner Brian S, bought2026-04-01: Lucera Erick, sold2026-04-15: Kersten Dirk, sold2026-04-17: Kersten Dirk, sold2026-04-20: Rhodes Jason P, sold2026-04-21: Kersten Dirk, sold2026-04-23: Rhodes Jason P, sold2026-04-28: Rhodes Jason P, sold2026-05-04: Rhodes Jason P, sold2026-05-13: Cox John, sold2026-05-13: Lucera Erick, sold2026-05-13: Kerr Douglas, sold2026-05-13: Friedl-Naderer Johanna, sold2026-05-20: Posner Brian S, bought2026-05-26: Posner Brian S, bought2026-06-03: Posner Brian S, bought2026-06-08: Posner Brian S, bought2026-06-16: Cox John, sold2026-06-16: Kerr Douglas, sold2026-06-16: Friedl-Naderer Johanna, sold2026-06-17: Kersten Dirk, sold2026-06-22: Kersten Dirk, sold2026-06-23: Rhodes Jason P, sold
under a no plan named▼ sale▲ buysize is dollars

Form 144 notices, newest first

2026-09-08Cox John, CEO & President$106,844
5,658 shno plan dateForm 4s on file end Jun 23144 ↗
2026-09-08Kerr Douglas, Chief Medical Officer$661
35 shplan 2026-03-18Form 4s on file end Jun 23144 ↗
2026-09-04Kerr Douglas, Chief Medical Officer$121,745
5,000 shplan 2026-03-18Form 4s on file end Jun 23144 ↗
2026-08-14Atlas Venture Opportunity Fund I, LP, Shareholder$8,371,191
322,465 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-08-14Atlas Venture Fund XI, LP, Shareholder$35.3M
1,359,674 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-08-14Atlas Venture Opportunity Fund II, LP, Shareholder$12.4M
478,377 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-08-13Cox John, CEO & President$131,034
4,986 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-13Lucera Erick, Chief Financial Officer$47,226
1,797 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-13Kerr Douglas, Chief Medical Officer$64,203
2,443 shplan 2026-03-18Form 4s on file end Jun 23144 ↗
2026-08-13Atlas Venture Opportunity Fund II, LP, Shareholder$2,470,841
94,415 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-08-13Atlas Venture Fund XI, LP, Shareholder$7,022,824
268,354 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-08-13Atlas Venture Opportunity Fund I, LP, Shareholder$1,665,537
63,643 shplan 2026-07-13Form 4s on file end Jun 23144 ↗
2026-07-27ForDyne B.V., Affiliate$6,670,760
261,460 shplan 2025-11-11Form 4s on file end Jun 23144 ↗
2026-07-07ATLAS VENTURE ASSOCIATES XI, L.P., Shareholder$114,200
5,000 shno plan dateForm 4s on file end Jun 23144 ↗
2026-07-07Atlas Venture Opportunity Fund I, LP, Shareholder$1,389,997
60,858 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-07-07Atlas Venture Fund XI, LP, Shareholder$3,516,583
153,966 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-07-07Atlas Venture Opportunity Fund II, LP, Shareholder$1,767,519
77,387 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-07-06Atlas Venture Opportunity Fund I, LP, Shareholder$2,307,438
100,019 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-07-06Atlas Venture Fund XI, LP, Shareholder$5,837,610
253,039 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-07-06Atlas Venture Opportunity Fund II, LP, Shareholder$2,934,089
127,182 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-29Atlas Venture Opportunity Fund II, LP, Shareholder$1,083,771
51,756 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-29Atlas Venture Fund XI, LP, Shareholder$2,156,171
102,969 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-29Atlas Venture Opportunity Fund I, LP, Shareholder$852,300
40,702 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-26Atlas Venture Opportunity Fund II, LP, Shareholder$1,688,021
81,903 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-26Atlas Venture Fund XI, LP, Shareholder$3,358,482
162,954 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-26Atlas Venture Opportunity Fund I, LP, Shareholder$1,327,511
64,411 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-25Lucera Erick, Chief Financial Officer$48,103
2,362 shno plan date144 ↗
Form 4, 2026-06-26: sold 2,362 at $20.37 Form 4 ↗
2026-06-25Atlas Venture Opportunity Fund II, LP, Shareholder$129,746
6,382 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-25Atlas Venture Opportunity Fund I, LP, Shareholder$102,036
5,019 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-25Atlas Venture Fund XI, LP, Shareholder$258,171
12,699 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-24Atlas Venture Opportunity Fund II, LP, Shareholder$514,543
25,397 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-24Atlas Venture Opportunity Fund I, LP, Shareholder$404,653
19,973 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-24Atlas Venture Fund XI, LP, Shareholder$1,023,738
50,530 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-23Atlas Venture Opportunity Fund I, LP, Shareholder$642,253
30,774 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-23Atlas Venture Opportunity Fund II, LP, Shareholder$816,664
39,131 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-22Atlas Venture Fund XI, LP, Shareholder$1,624,834
77,855 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-06-17ForDyne B.V., Affiliate$6,384,651
348,317 shplan 2025-11-11Form 4s on file end Jun 23144 ↗
2026-06-16Cox John, CEO & President$49,191
2,683 sh10b5-1 plan144 ↗
Form 4, 2026-06-17: sold 2,683 at $18.33 Form 4 ↗
2026-05-13Cox John, CEO & President$60,805
3,311 sh10b5-1 plan144 ↗
Form 4, 2026-05-14: sold 3,311 at $18.36 Form 4 ↗
2026-05-13Lucera Erick, Chief Financial Officer$26,592
1,448 sh10b5-1 plan144 ↗
Form 4, 2026-05-14: sold 1,448 at $18.36 Form 4 ↗
2026-05-06Atlas Venture Fund XI, LP, Shareholder$762,059
43,621 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-06Atlas Venture Opportunity Fund II, LP, Shareholder$383,047
21,926 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-06Atlas Venture Associates XI, LP, Shareholder$7,477
428 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-06Atlas Venture Opportunity Fund I, LP, Shareholder$301,253
17,244 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-05Atlas Venture Fund XI, LP, Shareholder$107,695
6,081 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-05Atlas Venture Opportunity Fund II, LP, Shareholder$54,122
3,056 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-05Atlas Venture Associates XI, LP, Shareholder$1,063
60 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-05Atlas Venture Opportunity Fund I, LP, Shareholder$42,557
2,403 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-04Atlas Venture Opportunity Fund I, LP, Shareholder$42,884
2,466 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-04Atlas Venture Fund XI, LP, Shareholder$108,531
6,241 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-05-04Atlas Venture Opportunity Fund II, LP, Shareholder$54,535
3,136 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-29Atlas Venture Associates XI, LP, Shareholder$1,061
61 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-28Atlas Venture Opportunity Fund I, LP, Shareholder$849,738
47,103 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-28Atlas Venture Fund XI, LP, Shareholder$2,149,773
119,167 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-28Atlas Venture Opportunity Fund II, LP, Shareholder$1,079,441
59,836 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-28Atlas Venture Associates XI, LP, Shareholder$21,125
1,171 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-27Atlas Venture Opportunity Fund II, LP, Shareholder$834,646
45,709 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-27Atlas Venture Opportunity Fund I, LP, Shareholder$656,392
35,947 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-27Atlas Venture Fund XI, LP, Shareholder$1,660,619
90,943 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-27Atlas Venture Associates XI, LP, Shareholder$16,324
894 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-24Atlas Venture Opportunity Fund I, LP, Shareholder$540,219
28,583 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-24Atlas Venture Opportunity Fund II, LP, Shareholder$686,921
36,345 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-24Atlas Venture Fund XI, LP, Shareholder$1,366,659
72,310 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-24Atlas Venture Associates XI, LP, Shareholder$13,419
710 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-23Atlas Venture Opportunity Fund I, LP, Shareholder$297,961
15,148 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-23Atlas Venture Opportunity Fund II, LP, Shareholder$378,864
19,261 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-23Atlas Venture Fund XI, LP, Shareholder$753,794
38,322 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-23Atlas Venture Associates XI, LP, Shareholder$7,416
377 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-22Atlas Venture Opportunity Fund I, LP, Shareholder$1,146,126
59,663 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-22Atlas Venture Opportunity Fund II, LP, Shareholder$1,457,386
75,866 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-22Atlas Venture Fund XI, LP, Shareholder$2,899,596
150,942 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-22Atlas Venture Associates XI, LP, Shareholder$28,527
1,485 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-21Atlas Venture Fund XI, LP, Shareholder$2,877,855
143,749 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-21Atlas Venture Opportunity Fund I, LP, Shareholder$1,137,536
56,820 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-21Atlas Venture Opportunity Fund II, LP, Shareholder$1,447,746
72,315 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-21Atlas Venture Associates XI, LP, Shareholder$28,288
1,413 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-20Atlas Venture Fund XI, LP, Shareholder$2,909,874
142,571 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-20Atlas Venture Opportunity Fund I, LP, Shareholder$1,150,206
56,355 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-20Atlas Venture Opportunity Fund II, LP, Shareholder$1,463,846
71,722 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-20Atlas Venture Associates XI, LP, Shareholder$28,594
1,401 shplan 2026-03-19Form 4s on file end Jun 23144 ↗
2026-04-01Lucera Erick, Chief Financial Officer$106,758
5,727 sh10b5-1 plan144 ↗
Form 4, 2026-04-03: sold 5,727 at $18.64 Form 4 ↗
2026-03-11ForDyne B.V., Affiliate$15.9M
807,295 shplan 2025-11-11no Form 4 on file144 ↗
2026-03-09ForDyne B.V., Affiliate$14.3M
807,295 shplan 2025-11-11no Form 4 on file144 ↗
2026-03-05Cox John, CEO & President$40,707
2,732 sh10b5-1 plan144 ↗
Form 4, 2026-03-06: sold 2,732 at $14.90 Form 4 ↗
2025-12-05Kerr Douglas, Chief Medical Officer$18,231
880 sh10b5-1 plan144 ↗
Form 4, 2025-12-05: sold 880 at $20.72 Form 4 ↗
2025-12-05Cox John, CEO & President$55,150
2,662 sh10b5-1 plan144 ↗
Form 4, 2025-12-05: sold 2,662 at $20.72 Form 4 ↗