Posner Brian S Insider Trading Activity

Average Profitability
25.26%
Insider Buys Quantity
8
Insider Buys Sum
$1.07M
Insider Sells Quantity
15
Insider Sells Sum
$13.02M

Insider Activity of Posner Brian S

According to the SEC Form 4 filings, Posner Brian S, being in a position of

  1. director at Arch Capital Group Ltd.,
    оver the last 12 months, has bought 0 shares, and sold 8000 shares for $144,608,
    over all time since 2016-11-18, has bought 34000 shares for $1.08M, and sold 12000 shares for $245,579.

Biography of Posner Brian S

No biography is available at this moment.

Statistics of Insider Transactions Last Year

Amount of Insider Buys and Sells by Stocks

Buys
 $314,840873
Sells
 $144,608327

Comparison of Insiders on Amount of Buys and Sells

2026-10-02PurchaseDyne Therapeutics, Inc.
DYN
director
2,500
0.0016%
$16.00$40,000+5.03%
2026-06-08PurchaseDyne Therapeutics, Inc.
DYN
director
2,000
0.0012%
$16.94$33,880+22.61%
2026-06-03PurchaseDyne Therapeutics, Inc.
DYN
director
2,500
0.0015%
$17.48$43,700+12.95%
2026-06-03SaleArch Capital Group Ltd.
ACGL
director
3,000
0.0002%
$19.66$58,980+11.92%
2026-05-26PurchaseDyne Therapeutics, Inc.
DYN
director
2,000
0.0012%
$18.21$36,420+7.8%
2026-05-20PurchaseDyne Therapeutics, Inc.
DYN
director
2,500
0.0015%
$17.12$42,800+9.34%
2026-05-11SaleArch Capital Group Ltd.
ACGL
director
2,000
0.0001%
$17.14$34,283+4.32%
2026-03-30PurchaseDyne Therapeutics, Inc.
DYN
director
2,000
0.0012%
$17.08$34,160+8.37%
2026-03-11PurchaseDyne Therapeutics, Inc.
DYN
director
2,000
0.0012%
$19.35$38,700-7.88%
2026-03-11SaleArch Capital Group Ltd.
ACGL
director
3,000
0.0001%
$17.11$51,345+2.15%
2026-03-06PurchaseDyne Therapeutics, Inc.
DYN
director
3,000
0.0018%
$15.06$45,180+23.96%
2025-08-01PurchaseArch Capital Group Ltd.
ACGL
director
1,000
<0.0001%
$17.34$17,338+6.37%
2022-10-28PurchaseArch Capital Group Ltd.
ACGL
director
2,000
0.0002%
$17.60$35,200+25.58%
2022-04-29PurchaseArch Capital Group Ltd.
ACGL
2,000
0.0002%
$19.23$38,450+17.28%
2021-06-14SaleArch Capital Group Ltd.
ACGL
director
4,000
0.0006%
$25.24$100,971+10.85%
2021-06-04SaleBiogen Inc.
BIIB
director
360
0.0002%
$274.17$98,701-15.86%
2020-05-13PurchaseArch Capital Group Ltd.
ACGL
director
2,000
0.0005%
$22.16$44,319+47.56%
2020-05-06PurchaseArch Capital Group Ltd.
ACGL
director
2,000
0.0005%
$23.72$47,436+38.93%
2019-12-02SaleBiogen Inc.
BIIB
director
2,110
0.0012%
$292.35$616,859-1.49%
2018-11-28PurchaseArch Capital Group Ltd.
ACGL
director
2,000
0.0005%
$26.64$53,288+22.62%
Total: 35
Company
About Prismo.proIdeasArticlesPrivacy PolicyTerms of ServiceContact Us
Screener Ideas
Dividend StocksBlue Chip StocksDefensive StocksGrowth StocksValue StocksCyclical StocksPenny Stocks
Stock Tools
Insiders ScreenerStocks ScreenerTop StocksStock NewsInsider RatioList of All Stocks
Prismo does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.
Information is provided 'as-is' and solely for informational purposes and is not advice. Prismo does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.