Brian S Posner — Insider Trading Activity | LevelFields AI

LevelFields

Insider Transactions

BS

Brian S Posner

DELAYED 1 MONTH

Director

ARCH CAPITAL GROUP LTD.

Dyne Therapeutics, Inc.

Filings

10

Companies

2

Latest

Jun 5, 2026

Transactions

Signal

Ticker / Company

Insider

Transaction

Value

Filed

51

Dyne Therapeutics, Inc.

Director

Purchase

$33.9K

2,000 sh

Jun 9 9:06 PM

Jun 8, 2026

51

Dyne Therapeutics, Inc.

Director

Purchase

$43.7K

2,500 sh

Jun 5 8:10 PM

Jun 3, 2026

52

ACGLFULL EXIT

ARCH CAPITAL GROUP LTD.

Director

Sale

$59.0K

3,000 sh

Jun 4 10:23 PM

Jun 3, 2026

51

Dyne Therapeutics, Inc.

Director

Purchase

$36.4K

2,000 sh

May 28 8:11 PM

May 26, 2026

51

Dyne Therapeutics, Inc.

Director

Purchase

$42.8K

2,500 sh

May 22 8:10 PM

May 20, 2026

49

ACGLFULL EXIT

ARCH CAPITAL GROUP LTD.

Director

Sale

$34.3K

2,000 sh

May 12 8:32 PM

May 11, 2026

51

Dyne Therapeutics, Inc.

Director

Purchase

$38.7K

2,000 sh

Mar 13 8:46 PM

Mar 11, 2026

65

ACGLCLUSTER 360% OUT

ARCH CAPITAL GROUP LTD.

Director

Sale

$51.3K

3,000 sh

Mar 12 8:29 PM

Mar 11, 2026

51

DYN+35% IN

Dyne Therapeutics, Inc.

Director

Purchase

$45.2K

3,000 sh

Mar 10 9:33 PM

Mar 6, 2026