Brian S Posner Net Worth - Insider Trades and Bio as of Jun 20, 2026

ACGLARCH CAPITAL GROUP LTD.SEC CIK: 0001372455

Estimated Net Worth

$21.4 Million

Last Updated: May 19, 2026 11:31 PM EST

Transaction Summary

Total Transactions88

Buy-Sell Ratio1.12

Buy Transactions19

Sell Transactions17

Transaction Volume

Total Volume-$3.88M

Net Volume$6.23M

Buy Volume$1.17M

Sell Volume-$5.06M

Trade Analysis

AVG Trade Size-$46.13K

Largest Trade$235.88K

Most Active MonthMay

Most Active Year2017

Trading Sentiment

OverallBullish

Recent TradeSelling

Last 90 Days0 Trades

ConvictionLow

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Brian S Posner has an estimated net worth of $21.4 Million. This is based on reported shares across multiple companies, which include BIOGEN INC., ARCH CAPITAL GROUP LTD., BG Medicine, Inc., LMP CAPITAL & INCOME FUND INC., Bioverativ Inc., ANADYS PHARMACEUTICALS INC, and Dyne Therapeutics, Inc..

2017 was Brian S Posner's most active year for acquiring shares with 11 total transactions. Brian S Posner's most active month to acquire stocks was the month of April. 2011 was Brian S Posner's most active year for disposing of shares, totalling 6 transactions. Brian S Posner's most active month to dispose stocks was the month of May. 2011 saw Brian S Posner paying a total of $2,817,544.25 for 70,533 shares, this is the most they've acquired in one year. In 2011 Brian S Posner cashed out on 81,950 shares for a total of $3,831,921.50, their largest year based on trade value.

Holdings & Transactions

ACGLarch capital group ltd.

Updated: May 12, 2026VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	2.00K	$17.14	-$34.28K	May 12, 2026	—	Sale	—	May 11	View
From 4	0.02	2.07K	—	—	May 07, 2026	122.18K	Grant	—	May 05	View
From 4	-0.60	3.00K	$17.11	-$51.34K	Mar 12, 2026	125.10K	Sale	—	Mar 11	View
From 4	0.25	1.00K	$17.34	$17.34K	Aug 04, 2025	128.10K	Purchase	—	Aug 01	View
From 4	0.01	1.56K	—	—	May 09, 2025	127.10K	Grant	—	May 07	View
From 4	0.01	1.46K	—	—	May 13, 2024	125.54K	Grant	—	May 09	View
From 4	0.01	1.71K	—	—	May 08, 2023	124.09K	Grant	—	May 04	View
From 4	1.00	2.00K	$17.60	$35.20K	Nov 01, 2022	122.37K	Purchase	—	Oct 28	View
From 4	0.05	5.28K	—	—	May 06, 2022	120.37K	Grant	—	May 04	View
From 4	—	2.00K	$19.23	$38.45K	May 02, 2022	115.09K	Purchase	—	Apr 29	View
From 4	-1.00	2.00K	$25.00	-$50.00K	Oct 01, 2021	113.09K	Disposition	—	Sep 30	View
From 4	-0.67	4.00K	$25.24	-$100.97K	Jun 15, 2021	115.09K	Sale	—	Jun 14	View
From 4	0.06	6.29K	—	—	May 10, 2021	119.09K	Grant	—	May 06	View
From 4	0.01	1.00K	$22.16	$22.16K	May 15, 2020	112.80K	Purchase	—	May 13	View
From 4	0.12	11.12K	$23.72	—	May 08, 2020	111.80K	Purchase	—	May 06 - 07	View
From 4	0.08	6.56K	—	—	May 09, 2019	97.69K	Grant	—	May 08	View
From 4	0.01	1.00K	$25.05	$25.05K	Nov 29, 2018	94.13K	Purchase	—	Nov 28	View
From 4	—	2.50K	$22.45	$56.12K	Nov 06, 2018	93.13K	Purchase	—	Nov 05	View
From 4	0.11	2.77K	—	—	May 10, 2018	34.21K	Grant	—	May 09	View
From 4	0.13	3.00K	$78.63	$235.88K	May 04, 2018	31.44K	Purchase	—	May 03	View
From 4	-1.00	2.15K	$25.00	-$53.65K	Jan 02, 2018	28.44K	Disposition	—	Jan 02	View
From 4	-0.24	695.00	$25.00	-$17.37K	Sep 26, 2017	30.59K	Disposition	—	Sep 25	View
From 4	-0.62	4.66K	$25.00	-$116.47K	Sep 19, 2017	31.28K	Disposition	—	Sep 18	View
From 4	0.10	2.06K	—	—	May 05, 2017	29.94K	Grant	—	May 04	View
From 4	—	6.00K	$21.88	$131.27K	Nov 21, 2016	33.88K	Purchase	—	Nov 18	View
From 4	0.16	2.84K	—	—	May 09, 2016	27.88K	Grant	—	May 06	View
From 4	0.19	2.80K	—	—	May 11, 2015	25.04K	Grant	—	May 07	View
From 4	0.26	3.07K	—	—	May 13, 2014	22.24K	Grant	—	May 09	View
From 4	0.50	2.50K	$23.58	$58.95K	Aug 20, 2013	19.16K	Purchase	—	Aug 19	View
From 4	—	5.00K	$25.25	$126.23K	Aug 05, 2013	16.66K	Purchase	—	Aug 02	View
From 4	0.32	2.80K	—	—	May 13, 2013	11.66K	Grant	—	May 09	View
From 4	0.78	3.89K	—	—	May 11, 2012	8.86K	Grant	—	May 09	View
From 4	3.99	1.33K	—	—	May 09, 2011	1.66K	Grant	—	May 06	View
From 4	—	332.00	—	—	Nov 08, 2010	332.00	Grant	—	Nov 04	View
From 3	—	—	—	—	Nov 08, 2010	—	—	—	—	View

DYNdyne therapeutics, inc.

Updated: Apr 01, 2026VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.15	2.00K	$17.08	$34.16K	Apr 01, 2026	15.50K	Purchase	—	Mar 30	View
From 4	0.17	2.00K	$19.35	$38.70K	Mar 13, 2026	13.50K	Purchase	—	Mar 11	View
From 4	0.35	3.00K	$15.06	$45.18K	Mar 10, 2026	11.50K	Purchase	—	Mar 06	View
From 4	—	70.00K	—	—	Oct 02, 2025	70.00K	Grant	—	Oct 01	View
From 3	—	—	—	—	Oct 02, 2025	8.50K	—	—	—	View

BIIBbiogen inc.

Updated: Jul 02, 2021VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.10	775.00	—	—	Jul 02, 2021	8.18K	Grant	—	Jul 01	View
From 4	-0.05	360.00	$274.17	-$98.70K	Jun 07, 2021	7.40K	Sale	Scheduled	Jun 04	View
From 4	0.13	890.00	—	—	Jun 05, 2020	7.89K	Grant	—	Jun 03	View
From 4	-0.13	1.05K	$292.35	-$308.43K	Dec 03, 2019	7.00K	Sale	Scheduled	Dec 02	View
From 4	0.17	1.16K	—	—	Jun 20, 2019	8.05K	Grant	—	Jun 19	View
From 4	-0.04	315.00	—	—	Feb 15, 2019	6.90K	Grant	—	Feb 14	View
From 4	0.14	880.00	—	—	Jun 14, 2018	7.21K	Grant	—	Jun 12	View
From 4	-0.15	1.08K	$256.31	-$277.84K	Jun 12, 2017	6.33K	Sale	Scheduled	Jun 09	View
From 4	0.17	1.05K	—	—	Jun 09, 2017	7.41K	Grant	—	Jun 07	View
From 4	0.20	1.06K	—	—	Jun 09, 2016	6.34K	Grant	—	Jun 08	View
From 4	-0.08	470.00	$415.00	-$195.05K	Jun 23, 2015	5.28K	Sale	Scheduled	Jun 22	View
From 4	-0.07	400.00	$386.64	-$154.66K	Jun 16, 2015	5.75K	Sale	Scheduled	Jun 15	View
From 4	0.13	695.00	—	—	Jun 11, 2015	6.15K	Grant	—	Jun 10	View
From 4	-0.04	250.00	—	—	Feb 10, 2015	5.45K	Grant	—	Feb 06	View
From 4	-0.05	300.00	—	—	Jul 25, 2014	5.70K	Grant	—	Jul 24	View
From 4	-0.09	605.00	$315.00	-$190.57K	Jun 23, 2014	6.00K	Sale	Scheduled	Jun 20	View
From 4	0.03	170.00	$310.50	-$217.35K	Jun 16, 2014	6.61K	Grant	Scheduled	Jun 12 - 13	View
From 4	-0.32	3.00K	$296.76	-$890.27K	Apr 01, 2014	6.44K	Sale	Scheduled	Mar 31	View
From 4	-0.07	715.00	$219.62	-$443.63K	Jun 13, 2013	9.44K	Sale	Scheduled	Jun 11 - 12	View
From 4	-0.31	4.50K	$174.81	-$786.64K	Mar 19, 2013	10.15K	Sale	Scheduled	Mar 18	View
From 4	0.16	2.02K	—	—	Jun 11, 2012	14.65K	Grant	—	Jun 08	View
From 4	-0.17	2.50K	$103.19	-$159.05K	Jun 11, 2012	12.63K	Sale	Scheduled	Jun 07	View
From 4	-0.14	2.40K	$98.92	-$132.17K	Jun 05, 2012	15.13K	Sale	Scheduled	Jun 04	View
From 4	-0.54	15.00K	$81.96	-$317.19K	Aug 31, 2011	12.63K	Sale	Scheduled	Aug 29	View
From 4	0.30	2.90K	—	—	Jun 02, 2011	12.63K	Grant	—	Jun 01	View
From 4	-0.51	25.98K	$80.67	-$697.18K	May 27, 2011	24.73K	Sale	Scheduled	May 25	View
From 4	1.44	5.74K	—	—	Jun 10, 2010	9.73K	Grant	—	Jun 09	View
From 4	4.70	8.22K	—	—	Jun 05, 2009	9.97K	Grant	—	Jun 03	View
From 4	—	41.65K	—	—	Jul 24, 2008	41.65K	Grant	—	Jul 23	View
From 3	—	—	—	—	Jul 24, 2008	—	—	—	—	View

bioverativ inc.

Updated: Mar 08, 2018

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	42.85K	—	—	Mar 08, 2018	—	Disposition	—	Mar 08	View
From 4	—	6.36K	—	—	Feb 02, 2018	6.36K	Grant	—	Jan 31	View
From 4	0.18	1.00K	$59.19	$59.19K	Aug 10, 2017	6.69K	Purchase	—	Aug 09	View
From 4	0.54	2.00K	$53.86	$107.72K	May 24, 2017	5.69K	Purchase	—	May 24	View
From 4	0.40	1.06K	$56.83	$60.01K	Apr 17, 2017	3.69K	Grant	—	Apr 17	View
From 4/A	—	29.80K	—	—	Mar 27, 2017	29.80K	Grant	—	Feb 14	View
From 4	—	29.74K	—	—	Feb 16, 2017	29.74K	Grant	—	Feb 14	View
From 3	—	—	—	—	Jan 19, 2017	—	—	—	—	View

bg medicine, inc.

Updated: Jun 05, 2014

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	4.21K	—	—	Jun 05, 2014	4.21K	Grant	—	Jun 03	View
From 4	—	4.21K	—	—	Jun 14, 2013	4.21K	Grant	—	Jun 12	View
From 4	1.00	10.00K	$1.17	$11.65K	Nov 20, 2012	20.00K	Purchase	—	Nov 19	View
From 4	—	10.00K	$4.04	$40.40K	May 23, 2012	10.00K	Purchase	—	May 22	View
From 4	—	8.41K	—	—	Feb 15, 2012	8.41K	Grant	—	Feb 13	View
From 3	—	—	—	—	Feb 15, 2012	—	—	—	—	View

anadys pharmaceuticals inc

Updated: Aug 24, 2011

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	25.00K	—	—	Aug 24, 2011	25.00K	Grant	—	Aug 22	View
From 3	—	—	—	—	Aug 24, 2011	—	—	—	—	View

SCDlmp capital & income fund inc.

Officer the Adviser Officer

Updated: Oct 11, 2006VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	5.00K	$17.95	$89.75K	Oct 11, 2006	5.00K	Purchase	—	Oct 11	View
From 3	—	—	—	—	Aug 11, 2006	—	—	—	—	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions