- Corporate Officers - P
- Posner Brian S
Insider Trading History of Posner Brian S
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Posner Brian S since 2015.
This trader's CIK number is 1372455.
At the time of last reporting, Posner Brian S was the Officer of Arch Capital Group Ltd.. (stock ticker symbol ACGL).
Also see all insider trading activities at Arch Capital Group Ltd..
Note that in the past
Posner Brian S also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Biogen Inc. (BIIB) by Posner Brian S
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2021 | BIIB | 0 | $0 | 360 | $98,701 | 0 | $0 |
| 2019 | BIIB | 0 | $0 | 1,055 | $308,429 | 0 | $0 |
| 2017 | BIIB | 0 | $0 | 1,084 | $277,840 | 0 | $0 |
| 2015 | BIIB | 0 | $0 | 870 | $349,706 | 0 | $0 |
Yearly summary of insider trading at Bioverativ Inc. (BIVV) by Posner Brian S
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2017 | BIVV | 3,000 | $166,884 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Arch Capital Group Ltd. (ACGL) by Posner Brian S
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | ACGL | 1,000 | $17,338 | 0 | $0 | 0 | $0 |
| 2022 | ACGL | 4,000 | $73,650 | 0 | $0 | 0 | $0 |
| 2020 | ACGL | 2,000 | $45,877 | 0 | $0 | 0 | $0 |
| 2018 | ACGL | 6,500 | $316,117 | 0 | $0 | 0 | $0 |
| 2016 | ACGL | 6,000 | $131,274 | 0 | $0 | 0 | $0 |
Insider trading activities at 3 companies by Posner Brian S:
1. Biogen Inc. (BIIB)
2. Bioverativ Inc. (BIVV)
3. Arch Capital Group Ltd. (ACGL)
Table 1. Insider trading of Biogen Inc. (BIIB) by Posner Brian S
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2021-06-04 | BIIB | Sale | 360 | 274.17 | 98,701 |
| 2019-12-02 | BIIB | Sale | 1,055 | 292.35 | 308,429 |
| 2017-06-09 | BIIB | Sale | 1,084 | 256.31 | 277,840 |
| 2015-06-22 | BIIB | Sale | 470 | 415.00 | 195,050 |
| 2015-06-15 | BIIB | Sale | 400 | 386.64 | 154,656 |
Table 2. Insider trading of Bioverativ Inc. (BIVV) by Posner Brian S
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2017-08-09 | BIVV | Buy | 1,000 | 59.19 | 59,190 |
| 2017-05-24 | BIVV | Buy | 2,000 | 53.85 | 107,694 |
Table 3. Insider trading of Arch Capital Group Ltd. (ACGL) by Posner Brian S
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-08-01 | ACGL | Buy | 1,000 | 17.34 | 17,338 |
| 2022-10-28 | ACGL | Buy | 2,000 | 17.60 | 35,200 |
| 2022-04-29 | ACGL | Buy | 2,000 | 19.23 | 38,450 |
| 2020-05-13 | ACGL | Buy | 1,000 | 22.16 | 22,159 |
| 2020-05-06 | ACGL | Buy | 1,000 | 23.72 | 23,718 |
| 2018-11-28 | ACGL | Buy | 1,000 | 25.05 | 25,051 |
| 2018-11-05 | ACGL | Buy | 2,500 | 22.45 | 56,125 |
| 2018-05-03 | ACGL | Buy | 3,000 | 78.31 | 234,941 |
| 2016-11-18 | ACGL | Buy | 6,000 | 21.88 | 131,274 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Posner Brian S
(Officer of Arch Capital Group Ltd. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.