Data spanning the past 90 days through February 07, 2026 reveals that Harrow's three principal insider shareholders consist of Chief Executive Officer Mark L Baum (2.99Mn shares), President And Cfo Andrew R. Boll (811.18K shares), Ceo & President And Imprimisrx John P. Saharek (467.39K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Mark L Baum | Chief Executive Officer | 2,986,130 | 16 Dec, 2025 |
| Andrew R. Boll | President And Cfo | 811,179 | 16 Dec, 2025 |
| John P. Saharek | Ceo & President And Imprimisrx | 467,388 | 07 Apr, 2025 |
| Management Inc. Opaleye | 70,000 | 08 Jan, 2026 | |
| Martin A. Makary | 45,000 | 15 Aug, 2023 | |
| Richard L Md Lindstrom | 26,100 | 03 Oct, 2022 | |
| Horn R. Lawrence Van | 1,860 | 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 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 | Mark L Baum | Common Stock | D | 79,994 | $47.06 | 2,986,130 | D | F |
| 12 Dec, 2025 | Andrew R. Boll | - | - | 811,179 | D | |||
| 12 Dec, 2025 | Andrew R. Boll | Common Stock | A | 60,000 | $3.95 | 837,844 | D | M |
| 12 Dec, 2025 | Andrew R. Boll | Common Stock | D | 26,665 | $47.06 | 811,179 | D | F |
| 12 Dec, 2025 | Andrew R. Boll | - | - | 837,844 | D | |||
| 21 Jul, 2025 | Mark L Baum | Common stock | D | 313,338 | $37.08 | 2,886,124 | D | F |
| 21 Jul, 2025 | Mark L Baum | Common stock | A | 600,000 | $7.87 | 3,199,462 | D | M |
| 10 Jun, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 15,000 | $30.80 | 90,000 | I | S |
| 09 Jun, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 15,204 | $30.37 | 105,000 | I | S |
| 04 Jun, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 1,796 | $30.02 | 120,204 | I | S |
| 03 Jun, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 3,000 | $30.04 | 122,000 | I | S |
| 13 May, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 5,000 | $26.59 | 125,000 | I | S |
| 13 May, 2025 | Management Inc. Opaleye | - | - | 125,000 | I | |||
| 12 May, 2025 | Management Inc. Opaleye | Common Stock, par value $0.001 per share | D | 10,000 | $25.90 | 130,000 | I | S |
| 12 May, 2025 | Management Inc. Opaleye | - | - | 130,000 | I | |||
| 07 Apr, 2025 | Mark L Baum | Common Stock | D | 300,363 | $23.09 | 2,599,462 | D | F |
| 07 Apr, 2025 | Andrew R. Boll | - | - | 777,844 | D | |||
| 07 Apr, 2025 | Andrew R. Boll | Common Stock | D | 136,745 | $23.09 | 777,844 | D | F |