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Guides: What is an SEC Form 4 · the transaction codes · who has to file · 10b5-1 plans
Open-market purchases by insiders.
Traded Jul 18 – Mar 23, 2026 · largest single transaction ~$27K
Jul 18, 2025~$26K · 20K sh @ $1.28
DetailsOfficial recordOct 22, 2025~$6.5K · 6,120 sh @ $1.06
DetailsOfficial recordDec 30, 2025~$8.1K · 7,009 sh @ $1.15
DetailsOfficial recordDec 16, 2025~$7.6K · 7,675 sh @ $0.99
DetailsOfficial recordDec 22, 2025~$4K · 4,031 sh @ $1.00
DetailsOfficial recordFeb 4, 2026~$27K · 19K sh @ $1.41
DetailsOfficial recordNov 26, 2025~$2.8K · 3,033 sh @ $0.93
DetailsOfficial recordNov 28, 2025~$3.7K · 3,885 sh @ $0.96
DetailsOfficial recordNov 6, 2025~$1.6K · 1,496 sh @ $1.04
DetailsOfficial recordDec 3, 2025~$227 · 244 sh @ $0.93
DetailsOfficial recordOct 20, 2025~$439 · 422 sh @ $1.04
DetailsOfficial recordNov 25, 2025~$63 · 69 sh @ $0.91
DetailsOfficial recordNov 20, 2025~$870 · 925 sh @ $0.94
DetailsOfficial recordNov 7, 2025~$120 · 115 sh @ $1.04
DetailsOfficial recordJan 7, 2026~$1.6K · 1,330 sh @ $1.19
DetailsOfficial recordMar 23, 2026~$23K · 18K sh @ $1.33
DetailsOfficial recordFeb 11, 2026~$22K · 16K sh @ $1.43
DetailsOfficial recordFeb 23, 2026~$21K · 15K sh @ $1.41
DetailsOfficial recordInsider buying
First insider buy since Jul 2025Traded Oct 2 · filed 5 days later
Since the trade +12.9% · S&P 500 −2.0% · to Nov 13
A Dyne Therapeutics director paid $40K out of pocket for Dyne Therapeutics shares. Shares held went up 10% with this purchase.
Checked for new insider filings 3 h ago
