RICHARD LIBENSON Net Worth - Insider Trades and Bio as of Jun 11, 2026

COSTCOSTCO WHOLESALE CORP /NEWSEC CIK: 0001187964

Estimated Net Worth

-$2.32 Million20.1%vs Last Year

Last Updated: May 19, 2026 03:40 AM EST

Transaction Summary

Total Transactions45

Buy-Sell Ratio0.00

Buy Transactions0

Sell Transactions21

Transaction Volume

Total Volume-$22.35M

Net Volume$22.35M

Buy Volume$0.00

Sell Volume-$22.35M

Trade Analysis

AVG Trade Size-$488.78K

Largest Trade$294.83K

Most Active MonthOct

Most Active Year2017

Trading Sentiment

OverallBullish

Recent TradeNeutral

Last 90 Days0 Trades

ConvictionNone

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Richard M Libenson does not have any significant net worth to report based on the numbers we have. This is based on reported shares in COSTCO WHOLESALE CORP /NEW.

2008 was Richard M Libenson's most active year for acquiring shares with 7 total transactions. Richard M Libenson's most active month to acquire stocks was the month of September. 2008 was Richard M Libenson's most active year for disposing of shares, totalling 10 transactions. Richard M Libenson's most active month to dispose stocks was the month of September. 2008 saw Richard M Libenson paying a total of $3,749,961.60 for 83,000 shares, this is the most they've acquired in one year. In 2008 Richard M Libenson cashed out on 160,050 shares for a total of $3,749,961.60, their largest year based on trade value.

Holdings & Transactions

COSTcostco wholesale corp /new

Updated: Oct 26, 2021VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.19	561.00	—	—	Oct 26, 2021	80.56K	Grant	—	Oct 22	View
From 4	0.01	34.00	—	—	Dec 11, 2020	80.00K	Grant	—	Dec 11	View
From 4	0.32	719.00	—	—	Oct 22, 2020	79.97K	Grant	—	Oct 22	View
From 4	-0.04	1.70K	$298.25	-$507.91K	Oct 31, 2019	79.25K	Sale	—	Oct 25 - 30	View
From 4	0.30	901.00	—	—	Oct 24, 2019	80.95K	Grant	—	Oct 22	View
From 4	-0.05	2.05K	$224.00	-$458.98K	Oct 26, 2018	80.05K	Sale	—	Oct 22 - 25	View
From 4	0.30	1.18K	—	—	Oct 24, 2018	82.10K	Grant	—	Oct 22	View
From 4	-0.34	20.00K	$193.03	-$3.86M	Dec 19, 2017	81.51K	Sale	—	Dec 18	View
From 4/A	0.37	1.68K	—	—	Oct 27, 2017	103.86K	Grant	—	Oct 22	View
From 4/A	-0.05	2.35K	$162.00	-$380.70K	Oct 25, 2017	99.35K	Sale	—	Oct 24	View
From 4	0.41	1.87K	—	—	Oct 24, 2017	104.05K	Grant	—	Oct 22	View
From 4	-0.36	2.35K	$162.00	-$380.70K	Oct 24, 2017	101.70K	Sale	—	Oct 24	View
From 4	0.03	140.00	$173.01	$24.22K	May 25, 2017	102.18K	Grant	—	May 24	View
From 4	-0.04	2.38K	$151.00	-$360.13K	Oct 25, 2016	102.04K	Sale	—	Oct 25	View
From 4	0.47	2.18K	—	—	Oct 24, 2016	104.43K	Grant	—	Oct 22	View
From 4	-0.05	5.64K	$154.75	-$1.21M	Oct 26, 2015	102.25K	Sale	—	Oct 22 - 26	View
From 4	0.04	216.00	$146.96	$31.74K	Mar 03, 2015	107.89K	Grant	—	Feb 27	View
From 4	-0.32	20.89K	$129.67	-$2.71M	Oct 24, 2014	107.67K	Sale	—	Oct 24	View
From 4	0.10	2.40K	—	—	Oct 23, 2014	128.56K	Grant	—	Oct 22	View
From 4	-0.22	11.38K	$116.65	-$1.33M	Oct 28, 2013	126.16K	Sale	—	Oct 28	View
From 4	-0.12	9.79K	$116.67	-$1.14M	Oct 25, 2013	137.54K	Sale	—	Oct 24	View
From 4	0.06	2.40K	—	—	Oct 23, 2013	147.33K	Grant	—	Oct 22	View
From 4	-0.13	6.00K	$99.00	-$594.03K	Dec 20, 2012	144.93K	Sale	—	Dec 20	View
From 4	0.08	3.00K	$98.31	$294.83K	Dec 13, 2012	150.93K	Grant	—	Dec 12	View
From 4/A	-0.16	16.67K	$94.83	-$1.86M	Oct 25, 2012	147.93K	Sale	—	Oct 22 - 24	View
From 4	-0.16	16.67K	$94.83	-$1.86M	Oct 24, 2012	147.93K	Sale	—	Oct 22 - 24	View
From 4	8.33	50.00K	—	—	Apr 16, 2012	164.60K	Grant	—	Apr 13	View
From 4	0.33	3.00K	—	—	Oct 24, 2011	114.60K	Grant	—	Oct 22	View
From 4	-0.13	15.24K	$76.16	-$573.10K	Apr 11, 2011	111.60K	Sale	—	Apr 11	View
From 4	0.50	3.00K	—	—	Oct 26, 2010	126.84K	Grant	—	Oct 22	View
From 4	-0.89	48.00K	$35.90	—	Oct 12, 2010	6.00K	Sale	—	Oct 08	View
From 4	0.33	3.00K	—	—	Oct 23, 2009	123.84K	Grant	—	Oct 22	View
From 4	0.50	3.00K	—	—	Oct 23, 2008	120.84K	Grant	—	Oct 22	View
From 4/A	-0.46	40.00K	$46.98	—	Mar 18, 2008	117.84K	Sale	—	Jan 02 - 15	View
From 4	-0.25	40.00K	$46.98	—	Feb 19, 2008	117.84K	Sale	—	Feb 15	View
From 4	0.07	3.00K	—	—	Oct 18, 2007	117.84K	Grant	—	Oct 17	View
From 4	0.00	25.00	—	—	Nov 01, 2006	114.84K	Grant	—	Oct 23	View
From 4	0.07	3.00K	—	—	Oct 23, 2006	115.41K	Grant	—	Oct 19	View
From 4	0.04	1.50K	—	—	Jun 12, 2006	112.41K	Grant	—	Jun 12	View
From 4	-0.21	19.00K	$54.54	-$1.04M	Mar 30, 2006	71.63K	Sale	—	Mar 29	View
From 4	—	12.00K	—	—	Apr 04, 2005	12.00K	Grant	—	Apr 01	View
From 4/A	-0.21	34.23K	$38.03	-$1.30M	Apr 20, 2004	168.68K	Sale	—	Apr 06	View
From 4	-0.30	38.77K	$38.03	-$1.47M	Apr 16, 2004	129.91K	Sale	—	Apr 16	View
From 4	-0.21	34.23K	$38.03	-$1.30M	Apr 07, 2004	168.68K	Sale	—	Apr 06	View
From 4	—	12.00K	—	—	Apr 02, 2004	12.00K	Grant	—	Apr 01	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions