Brian S Posner - Net Worth and Insider Trading
Brian S Posner Net Worth
The estimated net worth of Brian S Posner is at least $2 Million dollars as of 2024-10-03. Brian S Posner is the Director of Biogen Inc and owns about 7,400 shares of Biogen Inc (BIIB) stock worth over $1 Million. Brian S Posner is the Director of Bioverativ Inc and owns about 6,693 shares of Bioverativ Inc (BIVV) stock worth over $702,631. Brian S Posner is also the Director of Arch Capital Group Ltd and owns about 3,000 shares of Arch Capital Group Ltd (ACGL) stock worth over $341,220. Details can be seen in Brian S Posner's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Brian S Posner has not made any transactions after 2022-10-28 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Brian S Posner
Brian S Posner Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Brian S Posner owns 5 companies in total, including Biogen Inc (BIIB) , Arch Capital Group Ltd (ACGL) , and Bioverativ Inc (BIVV) among others .
Click here to see the complete history of Brian S Posner’s form 4 insider trades.
Insider Ownership Summary of Brian S Posner
| Ticker | Comapny | Transaction Date | Type of Owner |
|---|---|---|---|
| BIIB | Biogen Inc | 2021-06-04 | director |
| ACGL | Arch Capital Group Ltd | 2022-10-28 | director |
| BIVV | Bioverativ Inc | 2018-03-08 | director |
 | | 2014-06-03 | director |
| | 2006-08-01 | other: Pres. & CEO & CoCIO of SubAdvis |
Brian S Posner Latest Holdings Summary
Brian S Posner currently owns a total of 3 stocks. Among these stocks, Brian S Posner owns 7,400 shares of Biogen Inc (BIIB) as of June 4, 2021, with a value of $1 Million and a weighting of 57.23%. Brian S Posner owns 6,693 shares of Bioverativ Inc (BIVV) as of August 9, 2017, with a value of $702,631 and a weighting of 28.79%. Brian S Posner also owns 3,000 shares of Arch Capital Group Ltd (ACGL) as of October 28, 2022, with a value of $341,220 and a weighting of 13.98%.
Latest Holdings of Brian S Posner
| Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| BIIB | Biogen Inc | 2021-06-04 | 7,400 | 188.74 | 1,396,676 |
| BIVV | Bioverativ Inc | 2017-08-09 | 6,693 | 104.98 | 702,631 |
| ACGL | Arch Capital Group Ltd | 2022-10-28 | 3,000 | 113.74 | 341,220 |
Holding Weightings of Brian S Posner
Brian S Posner Form 4 Trading Tracker
According to the SEC Form 4 filings, Brian S Posner has made a total of 2 transactions in Biogen Inc (BIIB) over the past 5 years, including 0 buys and 2 sells. The most-recent trade in Biogen Inc is the sale of 360 shares on June 4, 2021, which brought Brian S Posner around $98,701.
According to the SEC Form 4 filings, Brian S Posner has made a total of 0 transactions in Bioverativ Inc (BIVV) over the past 5 years. The most-recent trade in Bioverativ Inc is the acquisition of 1,000 shares on August 9, 2017, which cost Brian S Posner around $59,190.
According to the SEC Form 4 filings, Brian S Posner has made a total of 5 transactions in Arch Capital Group Ltd (ACGL) over the past 5 years, including 4 buys and 1 sells. The most-recent trade in Arch Capital Group Ltd is the acquisition of 2,000 shares on October 28, 2022, which cost Brian S Posner around $35,200.
Insider Trading History of Brian S Posner
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Brian S Posner Trading Performance
GuruFocus tracks the stock performance after each of Brian S Posner's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Brian S Posner is 13.8%. GuruFocus also compares Brian S Posner's trading performance to market benchmark return within the same time period. The performance of stocks bought by Brian S Posner within 3 months outperforms 8 times out of 10 transactions in total compared to the return of S&P 500 within the same period.
You can select different timeframes to see how Brian S Posner's insider trading performs compared to the benchmark.
Performance of Brian S Posner
Average Return
Outperforming Transactions
| 1 Month | 3 Months | 6 Months | 1 Year | 2 Years | 3 Years | |
|---|---|---|---|---|---|---|
| Return(%) | 10.81 | | | | | |
| Relative Return to S&P 500(%) | 8.83 | | | | | |
Brian S Posner Ownership Network
Brian S Posner Owned Company Details
What does Biogen Inc do?
Who are the key executives at Biogen Inc?
Brian S Posner is the director of Biogen Inc. Other key executives at Biogen Inc include Head of Development Priya Singhal , Head of Research Jane Grogan , and EVP & Human Resources Ginger Gregory .
Biogen Inc (BIIB) Insider Trades Summary
Over the past 18 months, Brian S Posner made no insider transaction in Biogen Inc (BIIB). Other recent insider transactions involving Biogen Inc (BIIB) include a net sale of 2,660 shares made by Priya Singhal , a net sale of 2,681 shares made by Ginger Gregory , and a net purchase of 455 shares made by Eric K Rowinsky .
In summary, during the past 3 months, insiders sold 431 shares of Biogen Inc (BIIB) in total and bought 0 shares, with a net sale of 431 shares. During the past 18 months, 5,341 shares of Biogen Inc (BIIB) were sold and 455 shares were bought by its insiders, resulting in a net sale of 4,886 shares.
Biogen Inc (BIIB)'s detailed insider trading history can be found in Insider Trading Tracker table.
Biogen Inc Insider Transactions
Brian S Posner Mailing Address
Above is the net worth, insider trading, and ownership report for Brian S Posner. You might contact Brian S Posner via mailing address: 14 Cambridge Center, Cambridge Ma 02142.
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