Posner Brian S
Arch Capital Group Ltd · Director
Posner Brian S is listed in filings as Director at Arch Capital Group Ltd. This profile follows SEC Form 4 activity through Jun 5, 2026, including sale activity and purchase activity. Recent filings connect the profile to Arch Capital Group Ltd (ACGL) and Dyne Therapeutics, Inc. (DYN). The current snapshot covers public activity from May 9, 2025 to Jun 5, 2026. Reported amounts are shown as $59.0K to $36.4K. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.
History Trades
| Company | Value | Action | Price | Last Price |
|---|---|---|---|---|
| $36k2k shares | BuyMay 26, 2026 | $18.21 | $22.72 | |
| $43k2.5k shares | BuyMay 20, 2026 | $17.12 | $22.72 | |
| $34k2k shares | SellMay 11, 2026 | $17.14 | $98.54 | |
| $34k2k shares | BuyMar 30, 2026 | $17.08 | $22.72 | |
| $51k3k shares | SellMar 11, 2026 | $17.12 | $98.54 | |
| $39k2k shares | BuyMar 11, 2026 | $19.35 | $22.72 | |
| $45k3k shares | BuyMar 6, 2026 | $15.06 | $22.72 | |
| $17k1k shares | BuyAug 1, 2025 | $17.34 | $98.54 |