BAUM MARK L

General Counsel at QUEST OIL CORP · on record since May 5, 2006
Director at Shrink Nanotechnologies, Inc. · on record since Nov 13, 2006
10% owner at Shrink Nanotechnologies, Inc. · on record since Nov 13, 2006
Director at ProtoKinetix, Inc. · on record since Jun 7, 2007
President at ProtoKinetix, Inc. · on record since Jun 7, 2007
Former President at ProtoKinetix, Inc. · on record since Aug 14, 2007
CHIEF EXECUTIVE OFFICER at HARROW, INC. · on record since Apr 27, 2012
Director at Applied Natural Gas Fuels, Inc. · on record since May 20, 2008
President at Applied Natural Gas Fuels, Inc. · on record since May 20, 2008
Chief Executive Officer at Shrink Nanotechnologies, Inc. · on record since Jan 7, 2010
Director at Ideal Power Inc. · on record since Nov 21, 2013
Director at HARROW, INC. · on record since Apr 27, 2012
10% owner at HARROW, INC. · on record since Apr 27, 2012
Director at CHEMBIO DIAGNOSTICS, INC. · on record since Dec 23, 2003
CEO at CHEMBIO DIAGNOSTICS, INC. · on record since Dec 23, 2003
10% owner at CHEMBIO DIAGNOSTICS, INC. · on record since Dec 23, 2003
Director at Eton Pharmaceuticals, Inc. · on record since Nov 15, 2018

Insider trading activity of BAUM MARK L

Transactions on record: 98; since Aug 30, 2006

Open-market buys: 10; $1.3M

Open-market sells: 6; $352.7K

Companies traded: 5; last filing May 15, 2026

Figures computed from official regulatory filings — .

Companies where BAUM MARK L has traded

75 tx · $190.1B · May 15, 2026
3 tx · $60K · Mar 16, 2020
10 tx · $367.4K · Mar 6, 2017
7 tx · $128.7K · Oct 21, 2010
3 tx · $9.1K · Oct 10, 2006

Track record of BAUM MARK L

Statistical track record

Free account

Open-market buys: 14

Last buy: May 14, 2026

Win rates, median returns and the proven-insider analysis come with a free account.

Transaction history of BAUM MARK L

Co-insiders of BAUM MARK L

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
HARROW, INC.Listing on record	May 15, 2026	Buy	10,000	30.20 USD	$302K	conv 38First in 12mo	SEC
HARROW, INC.Listing on record	Dec 16, 2025	Other	-79,994	47.06 USD	$3.8M		SEC
HARROW, INC.Listing on record	Dec 16, 2025	ExerciseD (derivative)	-180,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Dec 16, 2025	Exercise	180,000	3.95 USD	$711K		SEC
HARROW, INC.Listing on record	Jul 23, 2025	ExerciseD (derivative)	-600,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Jul 23, 2025	Other	-313,338	37.08 USD	$11.6M		SEC
HARROW, INC.Listing on record	Jul 23, 2025	Exercise	600,000	7.87 USD	$4.7M	Unusual size	SEC
HARROW, INC.Listing on record	Jul 1, 2025	AwardD (derivative)	889,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	ExerciseD (derivative)	-762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	Exercise	762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	Other	-300,363	23.09 USD	$6.9M		SEC
HARROW, INC.Listing on record	Mar 25, 2024	Buy	9,000	11.59 USD	$104.3K	conv 18	SEC
HARROW, INC.Listing on record	Feb 21, 2024	Exercise	-59,836	10.67 USD	$638.5K		SEC
HARROW, INC.Listing on record	Feb 21, 2024	ExerciseD (derivative)	-150,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Feb 21, 2024	Exercise	150,000	10.67 USD	$1.6M	Unusual size	SEC
HARROW, INC.Listing on record	Feb 8, 2024	ExerciseD (derivative)	-15,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Feb 8, 2024	Exercise	15,400	7.71 USD	$118.7K		SEC
HARROW, INC.Listing on record	Nov 16, 2023	Buy	7,500	8.11 USD	$60.8K	conv 32	SEC
HARROW, INC.Listing on record	Aug 15, 2023	Buy	5,800	17.05 USD	$98.9K	conv 27	SEC
HARROW, INC.Listing on record	Jul 20, 2023	Other	-299,968	18.23 USD	$5.5M		SEC
HARROW, INC.Listing on record	Jul 20, 2023	Exercise	762,300	—	n/a (No price was disclosed in the filing)		SEC
HARROW, INC.Listing on record	Jul 20, 2023	ExerciseD (derivative)	-762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	ExerciseD (derivative)	-180,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	AwardD (derivative)	762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	Other	-117,633	20.97 USD	$2.5M		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
HARROW, INC.Listing on record	May 15, 2026	Buy	10,000	30.20 USD	$302K	conv 38First in 12mo	SEC
HARROW, INC.Listing on record	Dec 16, 2025	Other	-79,994	47.06 USD	$3.8M		SEC
HARROW, INC.Listing on record	Dec 16, 2025	ExerciseD (derivative)	-180,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Dec 16, 2025	Exercise	180,000	3.95 USD	$711K		SEC
HARROW, INC.Listing on record	Jul 23, 2025	ExerciseD (derivative)	-600,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Jul 23, 2025	Other	-313,338	37.08 USD	$11.6M		SEC
HARROW, INC.Listing on record	Jul 23, 2025	Exercise	600,000	7.87 USD	$4.7M	Unusual size	SEC
HARROW, INC.Listing on record	Jul 1, 2025	AwardD (derivative)	889,500	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	ExerciseD (derivative)	-762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	Exercise	762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 7, 2025	Other	-300,363	23.09 USD	$6.9M		SEC
HARROW, INC.Listing on record	Mar 25, 2024	Buy	9,000	11.59 USD	$104.3K	conv 18	SEC
HARROW, INC.Listing on record	Feb 21, 2024	Exercise	-59,836	10.67 USD	$638.5K		SEC
HARROW, INC.Listing on record	Feb 21, 2024	ExerciseD (derivative)	-150,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Feb 21, 2024	Exercise	150,000	10.67 USD	$1.6M	Unusual size	SEC
HARROW, INC.Listing on record	Feb 8, 2024	ExerciseD (derivative)	-15,400	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Feb 8, 2024	Exercise	15,400	7.71 USD	$118.7K		SEC
HARROW, INC.Listing on record	Nov 16, 2023	Buy	7,500	8.11 USD	$60.8K	conv 32	SEC
HARROW, INC.Listing on record	Aug 15, 2023	Buy	5,800	17.05 USD	$98.9K	conv 27	SEC
HARROW, INC.Listing on record	Jul 20, 2023	Other	-299,968	18.23 USD	$5.5M		SEC
HARROW, INC.Listing on record	Jul 20, 2023	Exercise	762,300	—	n/a (No price was disclosed in the filing)		SEC
HARROW, INC.Listing on record	Jul 20, 2023	ExerciseD (derivative)	-762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	ExerciseD (derivative)	-180,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	AwardD (derivative)	762,300	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
HARROW, INC.Listing on record	Apr 4, 2023	Other	-117,633	20.97 USD	$2.5M		SEC