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Posner Brian S

ACGL · DIRECTOR
DYN · OTHER

Companies Traded

2

Total Buys

3

$118K

Total Sells

1

$51K

Net Position

+$67K

Net Buyer

Company Activity

Company Role Buys Sells Holdings Last Activity
DYN Dyne Therapeutics, Inc.
OTHER
3
$118K
0
$0
15,500
$265K
Mar 30, 2026
ACGL ARCH CAPITAL GROUP LTD.
DIRECTOR
0
$0
1
$51K
2,000
$34K
Mar 11, 2026

Recent Transactions

DYN BUY

Dyne Therapeutics, Inc.

Shares

2,000

Price

$17

Total Value

$34K

Date

Mar 30, 2026

DYN BUY

Dyne Therapeutics, Inc.

Shares

2,000

Price

$19

Total Value

$39K

Date

Mar 11, 2026

ACGL SELL

ARCH CAPITAL GROUP LTD.

Shares

3,000

Price

$17

Total Value

$51K

Date

Mar 11, 2026

DYN BUY

Dyne Therapeutics, Inc.

Shares

3,000

Price

$15

Total Value

$45K

Date

Mar 6, 2026

Trading Timeline

First Transaction

Mar 6, 2026

Latest Transaction

Mar 30, 2026