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Corporate insider profile

Brian S Posner Insider Trades

Latest reported as Director of Dyne Therapeutics, Inc. (DYN).

Purchase filings
5
Reported companies
2
Net open-market value
$103,537
Latest transaction
Oct 2, 2026

Affiliated corporations

Reported company relationships

DYNLatest reported

Dyne Therapeutics, Inc.

Director

ACGLPrior filing

ARCH CAPITAL GROUP LTD.

Corporate insider

Transaction history

Open-market Transactions

Open-market insider purchase and sale transactions
DateCompanyRoleTypeSharesPriceTotal value
Oct 2, 2026Dyne Therapeutics, Inc. (DYN)DirectorOpen Market Purchase2,500$16.00$40,000
Jun 8, 2026Dyne Therapeutics, Inc. (DYN)DirectorOpen Market Purchase2,000$16.94$33,880
Jun 3, 2026ARCH CAPITAL GROUP LTD. (ACGL)Corporate insiderSale3,000$19.66$58,980
Jun 3, 2026Dyne Therapeutics, Inc. (DYN)DirectorOpen Market Purchase2,500$17.48$43,700
May 26, 2026Dyne Therapeutics, Inc. (DYN)DirectorOpen Market Purchase2,000$18.21$36,420
May 20, 2026Dyne Therapeutics, Inc. (DYN)DirectorOpen Market Purchase2,500$17.12$42,800
May 11, 2026ARCH CAPITAL GROUP LTD. (ACGL)Corporate insiderSale2,000$17.14$34,283