Mark L. Baum

Companies

• Harrow HealthBoard member Apr 27, 2012 to now¹
• Eton Pharmaceuticals, Inc.Board member Nov 13, 2018 to Mar 16, 2020²
• Ideal Power Inc.Board member Nov 21, 2013 to Mar 6, 2017³
• Harrow HealthChief executive officer Apr 27, 2012 to Mar 15, 2013¹
• ProtoKinetix, Inc.Board member Jun 7, 2007 to Jun 7, 2007⁴
• ProtoKinetix, Inc.President Jun 7, 2007 to Jun 7, 2007⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• HHHarrow Health HROW2,996,130 shares⁵$86.1M at $28.75May 14, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 14, 2026Bought 10,000 shares at $30.20 of Harrow Health⁵
• Dec 12, 2025Shares withheld for tax 79,994 shares at $47.06 of Harrow Health⁶
• Dec 12, 2025Exercised options 180,000 shares at $3.95 of Harrow Health⁶
• Jul 21, 2025Shares withheld for tax 313,338 shares at $37.08 of Harrow Health⁷
• Jul 21, 2025Exercised options 600,000 shares at $7.87 of Harrow Health⁷
• Apr 7, 2025Shares withheld for tax 300,363 shares at $23.09 of Harrow Health⁸
• Apr 3, 2025Exercised options 762,300 shares of Harrow Health⁸
• Mar 22, 2024Bought 9,000 shares at $11.59 of Harrow Health⁹
• Feb 20, 2024Exercised options 59,836 shares at $10.67 of Harrow Health¹⁰
• Feb 20, 2024Exercised options 150,000 shares at $10.67 of Harrow Health¹⁰
• Feb 7, 2024Exercised options 15,400 shares at $7.71 of Harrow Health¹¹
• Nov 16, 2023Bought 7,500 shares at $8.11 of Harrow Health¹²
• Aug 14, 2023Bought 5,800 shares at $17.05 of Harrow Health¹³
• Jul 18, 2023Shares withheld for tax 299,968 shares at $18.23 of Harrow Health¹⁴
• Jul 18, 2023Exercised options 762,300 shares of Harrow Health¹⁴
• Apr 3, 2023Shares withheld for tax 117,633 shares at $20.97 of Harrow Health¹⁵
• Apr 3, 2023Exercised options 180,000 shares at $8.99 of Harrow Health¹⁵
• Jan 2, 2023Shares withheld for tax 35,179 shares at $14.76 of Harrow Health¹⁶
• Jan 2, 2023Exercised options 88,000 shares of Harrow Health¹⁶
• Dec 22, 2022Bought 25,000 shares at $13.39 of Harrow Health¹⁷
• Jan 20, 2022Shares withheld for tax 71,406 shares at $8.33 of Harrow Health¹⁸
• Jan 20, 2022Exercised options 125,000 shares at $2.40 of Harrow Health¹⁸