SEC CIK 1372455
Posner Brian S
Reported ownership across 2 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| BIIBview stock → | 8,175 | 2021-07-01 |
| ACGLview stock → | 0 | 2026-06-03 |
Position History — BIIB
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — BIIB
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2021-07-01 | Grant / award | 775 | $0.00 | 8,175 |
| 2021-06-04 | Open-market sale | 360 | $274.17 | 7,400 |
| 2020-06-03 | Grant / award | 890 | $0.00 | 7,885 |
| 2019-12-02 | Open-market sale | 1,055 | $292.35 | 6,995 |
| 2019-06-19 | Grant / award | 1,155 | $0.00 | 8,050 |
| 2019-02-14 | Gift | 315 | $0.00 | 6,895 |
| 2018-06-12 | Grant / award | 880 | $0.00 | 7,210 |
| 2017-06-09 | Open-market sale | 1,084 | $256.31 | 6,330 |
| 2017-06-07 | Grant / award | 1,055 | $0.00 | 7,414 |
| 2016-06-08 | Grant / award | 1,060 | $0.00 | 6,335 |
| 2015-06-22 | Open-market sale | 470 | $415.00 | 5,275 |
| 2015-06-15 | Open-market sale | 400 | $386.64 | 5,745 |
| 2015-06-10 | Grant / award | 695 | $0.00 | 6,145 |
| 2015-02-06 | Gift | 250 | $0.00 | 5,450 |
| 2014-07-24 | Gift | 300 | $0.00 | 5,700 |
| 2014-06-20 | Open-market sale | 605 | $315.00 | 6,000 |
| 2014-06-13 | Open-market sale | 700 | $310.50 | 6,605 |
| 2014-06-12 | Grant / award | 870 | $0.00 | 7,305 |
| 2014-03-31 | Open-market sale | 500 | $300.00 | 8,935 |
| 2014-03-31 | Open-market sale | 2,500 | $296.11 | 6,435 |
| 2013-06-12 | Grant / award | 1,305 | $0.00 | 9,435 |
| 2013-06-11 | Open-market sale | 2,020 | $219.62 | 8,130 |
| 2013-03-18 | Open-market sale | 4,500 | $174.81 | 10,150 |
| 2012-06-08 | Grant / award | 2,020 | $0.00 | 14,650 |
| 2012-06-07 | Option exercise (derivative) | 2,500 | $0.00 | 0 |
| 2012-06-07 | Option exercise | 2,500 | $71.38 | 15,130 |
| 2012-06-07 | Open-market sale | 2,500 | $135.00 | 12,630 |
| 2012-06-04 | Option exercise (derivative) | 2,400 | $0.00 | 2,500 |
| 2012-06-04 | Open-market sale | 2,400 | $126.45 | 12,630 |
| 2012-06-04 | Option exercise | 2,400 | $71.38 | 15,030 |
| 2011-08-29 | Option exercise (derivative) | 15,000 | $0.00 | 0 |
| 2011-08-29 | Open-market sale | 15,000 | $92.53 | 12,630 |
| 2011-08-29 | Option exercise | 15,000 | $71.38 | 27,630 |
| 2011-06-01 | Grant / award | 2,900 | $0.00 | 12,630 |
| 2011-05-25 | Option exercise (derivative) | 20,000 | $0.00 | 15,000 |
| 2011-05-25 | Option exercise (derivative) | 5,975 | $0.00 | 0 |
| 2011-05-25 | Option exercise | 20,000 | $71.38 | 35,705 |
| 2011-05-25 | Open-market sale | 12,805 | $93.74 | 22,900 |
| 2011-05-25 | Open-market sale | 13,170 | $94.43 | 9,730 |
| 2011-05-25 | Option exercise | 5,975 | $53.43 | 15,705 |
| 2010-06-09 | Grant / award | 5,735 | $0.00 | 9,730 |
| 2009-06-03 | Grant / award (derivative) | 5,975 | $0.00 | 5,975 |
| 2009-06-03 | Grant / award | 2,245 | $0.00 | 3,995 |
| 2008-07-23 | Grant / award (derivative) | 4,900 | $0.00 | 4,900 |
| 2008-07-23 | Grant / award (derivative) | 35,000 | $0.00 | 35,000 |
| 2008-07-23 | Grant / award | 1,750 | $0.00 | 1,750 |
| 2008-07-23 | — | — | — | 0 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.