Mark L Baum Net Worth - Insider Trades and Bio as of Jun 29, 2026

HROWHARROW, INC.SEC CIK: 0001274282

Estimated Net Worth

$615 Million

Last Updated: May 19, 2026 11:12 PM EST

Transaction Summary

Total Transactions61

Buy-Sell Ratio1.80

Buy Transactions9

Sell Transactions5

Transaction Volume

Total Volume$1.06M

Net Volume$1.93M

Buy Volume$1.50M

Sell Volume-$435.58K

Trade Analysis

AVG Trade Size-$397.43K

Largest Trade$962.05K

Most Active MonthJan

Most Active Year2023

Trading Sentiment

OverallBullish

Recent TradeBuying

Last 90 Days+1 Trades

ConvictionMedium

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Mark L Baum has an estimated net worth of $615 Million. This is based on reported shares across multiple companies, which include Shrink Nanotechnologies, Inc., HARROW, INC., QUEST OIL CORP, TRADING SOLUTIONS COM INC, Eton Pharmaceuticals, Inc., ProtoKinetix, Inc., Ideal Power Inc., and PNG VENTURES INC.

2016 was Mark L Baum's most active year for acquiring shares with 6 total transactions. Mark L Baum's most active month to acquire stocks was the month of December. 2010 was Mark L Baum's most active year for disposing of shares, totalling 7 transactions. Mark L Baum's most active month to dispose stocks was the month of September. 2025 saw Mark L Baum paying a total of $5,433,000.00 for 2,431,800 shares, this is the most they've acquired in one year. In 2025 Mark L Baum cashed out on 1,635,995 shares for a total of $22,318,472.35, their largest year based on trade value.

Holdings & Transactions

HROWharrow, inc.

CHIEF EXECUTIVE OFFICER Director

Updated: May 15, 2026VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.00	10.00K	$30.20	$302.00K	May 15, 2026	3.00M	Purchase	—	May 14	View
From 4	-0.03	79.99K	$25.51	-$3.05M	Dec 16, 2025	2.99M	Options	—	Dec 12	View
From 4	-0.10	313.34K	$22.48	-$6.90M	Jul 23, 2025	2.89M	Options	—	Jul 31 - 21	View
From 4	—	889.50K	—	—	Jul 01, 2025	889.50K	Grant	—	Jul 01	View
From 4	-0.10	300.36K	$23.09	-$6.94M	Apr 07, 2025	2.60M	Options	—	Apr 03 - 07	View
From 4	0.00	9.00K	$11.59	$104.31K	Mar 25, 2024	2.14M	Purchase	—	Mar 22	View
From 4	-0.03	59.84K	$10.67	$962.05K	Feb 21, 2024	2.13M	Options	—	Feb 20	View
From 4	—	—	$7.71	$118.73K	Feb 08, 2024	2.04M	Options	—	Feb 07	View
From 4	0.00	7.50K	$8.11	$60.83K	Nov 16, 2023	2.02M	Purchase	—	Nov 16	View
From 4	0.00	5.80K	$17.05	$98.89K	Aug 15, 2023	2.02M	Purchase	—	Aug 14	View
From 4	-0.13	299.97K	$18.23	-$5.47M	Jul 20, 2023	2.01M	Options	—	Jul 18	View
From 4	0.39	644.67K	$14.98	-$848.56K	Apr 04, 2023	2.31M	Options	—	Apr 03	View
From 4	-0.02	35.18K	$14.76	-$519.24K	Jan 03, 2023	1.48M	Options	—	Jan 02	View
From 4	0.02	25.00K	$13.39	$334.75K	Dec 23, 2022	1.43M	Purchase	—	Dec 22	View
From 4	-0.05	71.41K	$5.37	-$294.81K	Jan 21, 2022	1.41M	Options	—	Jan 20	View
From 4	—	762.30K	—	—	Jul 23, 2021	762.30K	Grant	—	Jul 23	View
From 4	-0.20	334.13K	$8.26	-$2.76M	Apr 27, 2021	1.35M	Options	—	Apr 25	View
From 4	—	—	—	—	Feb 26, 2021	1.69M	Options	—	Feb 25	View
From 4	—	150.00K	—	—	Feb 23, 2021	150.00K	Grant	—	Feb 19	View
From 4	—	—	—	—	Jun 08, 2020	600.00K	Acq/Dis	—	Jun 04	View
From 4/A	—	305.50K	—	—	Jan 06, 2020	305.50K	Grant	—	Jan 02	View
From 4	-0.50	305.50K	—	—	Jan 06, 2020	305.50K	Grant	—	Jan 02	View
From 4	—	—	$1.79	$279.24K	Nov 25, 2019	598.13K	Options	—	Nov 22	View
From 4	—	150.00K	—	—	Feb 21, 2019	150.00K	Grant	—	Feb 19	View
From 4	—	150.00K	—	—	Jan 04, 2018	150.00K	Grant	—	Jan 02	View
From 4	—	160.00K	—	—	Feb 03, 2017	160.00K	Grant	—	Feb 01	View
From 4	0.62	228.29K	$0.94	$498.76K	Dec 21, 2016	598.13K	Purchase	—	Dec 19	View
From 4	—	—	—	—	Apr 26, 2016	1.05M	Acq/Dis	—	Apr 25	View
From 4	—	180.00K	—	—	Apr 05, 2016	180.00K	Grant	—	Apr 01	View
From 4	—	600.00K	—	—	Aug 05, 2015	600.00K	Grant	—	Jul 31	View
From 4	—	15.40K	—	—	Feb 11, 2014	15.40K	Grant	—	Feb 10	View
From 4	8.42	1.43M	—	—	May 06, 2013	1.60M	Grant	—	May 02	View
From 4	1.11	9.15M	—	—	Jul 20, 2012	17.39M	Options	—	Jun 29 - 18	View
From 3	—	—	—	—	Apr 27, 2012	8.24M	—	—	—	View

ETONeton pharmaceuticals, inc.

Updated: Mar 16, 2020VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	27.40K	—	—	Mar 16, 2020	27.40K	Grant	—	Mar 12	View
From 4	—	12.50K	—	—	Mar 08, 2019	12.50K	Grant	—	Feb 20	View
From 4	—	10.00K	$6.00	$60.00K	Nov 15, 2018	794.75K	Purchase	—	Nov 15	View
From 3	—	—	—	—	Nov 13, 2018	784.75K	—	—	—	View

IPWRideal power inc.

Updated: Mar 06, 2017VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.60	15.60K	$2.54	$39.55K	Mar 06, 2017	70.56K	Purchase	—	Mar 03	View
From 4	—	27.88K	—	—	Jan 20, 2017	27.88K	Grant	—	Jan 03	View
From 4	—	25.48K	—	—	Jan 06, 2016	25.48K	Grant	—	Jan 02 - 04	View
From 4	-0.53	29.06K	$7.54	-$218.99K	Nov 17, 2015	54.96K	Sale	—	Nov 13	View
From 4/A	0.63	27.90K	$5.00	$54.31K	Mar 24, 2014	101.07K	Grant	—	Jan 02 - 03	View
From 4	0.54	23.60K	$5.00	$54.31K	Jan 07, 2014	96.77K	Grant	—	Jan 02 - 03	View
From 4	2.02	29.06K	$50,001.74	$1.14K	Dec 02, 2013	95.88K	Options	—	Nov 27	View
From 3	—	—	—	—	Nov 21, 2013	52.43K	—	—	—	View

shrink nanotechnologies, inc.

Chief Executive Officer Director

Updated: Oct 22, 2010

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.32	624.98K	$0.13	-$79.25K	Oct 22, 2010	1.31M	Sale	Scheduled	Oct 15 - 20	View
From 4/A	-0.23	570.00K	$0.14	-$81.51K	Oct 21, 2010	1.93M	Sale	Scheduled	Oct 13 - 14	View
From 4	-0.23	570.00K	$0.08	-$46.76K	Oct 18, 2010	1.93M	Sale	Scheduled	Oct 13 - 14	View
From 4	-1.00	191.67K	—	—	Jan 07, 2010	—	Disposition	—	Aug 15	View
From 3	—	—	—	—	Apr 21, 2009	21.88M	—	—	—	View
From 3	—	—	—	—	Nov 13, 2006	7.48M	—	—	—	View

png ventures inc

President Director

Updated: May 20, 2008

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 3	—	—	—	—	May 20, 2008	65.85K	—	—	—	View

PKTXprotokinetix, inc.

Updated: Aug 14, 2007VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	—	—	—	Aug 14, 2007	—	—	—	—	View
From 3	—	—	—	—	Jun 07, 2007	826.09K	—	—	—	View

quest oil corp

Updated: Oct 10, 2006

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-1.00	302.50K	$0.03	-$9.07K	Oct 10, 2006	—	Sale	—	Oct 03	View
From 4	0.17	112.50K	—	—	Aug 30, 2006	792.50K	Purchase	—	Jun 07 - 28	View
From 3	—	—	—	—	May 05, 2006	377.50K	—	—	—	View

trading solutions com inc

CEO Director

Updated: Dec 23, 2003

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 3/A	—	—	—	—	Dec 23, 2003	15.00M	—	—	—	View
From 3	—	—	—	—	Dec 23, 2003	15.00M	—	—	—	View
From 3/A	—	—	—	—	Dec 23, 2003	—	—	—	—	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions