Harrow, Inc. (HROW) Insider Ownership

Historic Insider Ownership Trends

As of April 22, 2026, the three largest insider holders of HROW are Mark L Baum (Chief Executive Officer, 2.99Mn shares), Mark L Baum (Chief Executive Officer, 2.89Mn shares), Andrew R. Boll (President And Cfo, 811.18K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Mark L Baum Chief Executive Officer 2,986,130 0 16 Dec, 2025
Mark L Baum Chief Executive Officer 2,886,124 0 23 Jul, 2025
Andrew R. Boll President And Cfo 811,179 0 16 Dec, 2025
Andrew R. Boll Chief Financial Officer 568,089 0 21 Feb, 2024
John P. Saharek Ceo President, Imprimisrx 467,388 0 07 Apr, 2025
John P. Saharek Ceo Of Imprimisrx 299,663 0 13 Sep, 2024
Martin A. Makary - 45,000 0 15 Aug, 2023
Horn R. Lawrence Van - 1,860 0 23 Dec, 2022

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
03 Mar, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 59,000 $39.15 3,756,000 I S
03 Mar, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 1,309 $39.15 63,691 I S
04 Mar, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 134,000 $39.67 3,622,000 I S
04 Mar, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 4,263 $39.67 59,428 I S
27 Feb, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 5,000 $54.18 65,000 I S
30 Jan, 2026 Patrick William Sullivan RSU A 25,000 $0.00 25,000 D A
30 Jan, 2026 Patrick William Sullivan RSU A 15,000 $0.00 15,000 D A
06 Jan, 2026 Management Inc. Opaleye Common Stock, par value $0.001 per share D 20,000 $53.35 70,000 I S
12 Dec, 2025 Mark L Baum Common Stock A 180,000 $3.95 3,066,124 D M
12 Dec, 2025 Andrew R. Boll Common Stock A 60,000 $3.95 837,844 D M
12 Dec, 2025 Mark L Baum Common Stock D 79,994 $47.06 2,986,130 D F
12 Dec, 2025 Andrew R. Boll Common Stock D 26,665 $47.06 811,179 D F
12 Dec, 2025 Mark L Baum Stock Option (Right to Buy) D 180,000 $0.00 0 D M
12 Dec, 2025 Andrew R. Boll Stock Option (Right to Buy) D 60,000 $0.00 0 D M
01 Sep, 2025 Randall E. Pollard Stock Option (Right to Buy) A 30,000 $0.00 30,000 D A
21 Jul, 2025 Mark L Baum Common stock A 600,000 $7.87 3,199,462 D M
21 Jul, 2025 Mark L Baum Common stock D 313,338 $37.08 2,886,124 D F
31 Jul, 2015 Mark L Baum Stock Option (Right to Buy) D 600,000 $0.00 0 D M
01 Jul, 2025 Andrew R. Boll RSU A 405,750 $0.00 405,750 D A
01 Jul, 2025 Mark L Baum RSU A 889,500 $0.00 889,500 D A