As of April 17, 2026, Catalyst Pharmaceuticals's top three insider holders are Steve Miller (Chief Op. Scientific Officer, 1.09Mn shares), Steve Miller (Chief Operating Officer, 761.72K shares), Charles B O'Keeffe (Director, 732.47K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Steve Miller | Chief Op. Scientific Officer | 1,093,803 | 0 | 30 Dec, 2025 |
| Steve Miller | Chief Operating Officer | 761,724 | 0 | 19 Aug, 2022 |
| Charles B O'Keeffe | - | 732,470 | 0 | 19 Feb, 2025 |
| Charles B O'Keeffe | - | 616,391 | 0 | 27 Jan, 2023 |
| Richard J Daly | President And Ceo | 271,266 | 0 | 06 Jan, 2026 |
| Brian Elsbernd | Chief Compliance/Legal Officer | 242,501 | 0 | 30 Dec, 2025 |
| Philip H Coelho | - | 239,553 | 0 | 06 Dec, 2021 |
| Richard J Daly | President And Ceo | 226,794 | 0 | 28 Aug, 2025 |
| Philip H Coelho | - | 204,887 | 0 | 05 May, 2023 |
| Brian Elsbernd | Chief Compliance/Legal Officer | 124,433 | 0 | 28 Mar, 2024 |
| Alicia Grande | Vp, Treasurer And Cfo | 90,557 | 0 | 12 Dec, 2023 |
| Alicia Grande | Vp, Treasurer And Cfo | 55,813 | 0 | 29 Dec, 2023 |
| Preethi Sundaram | Chief Strategy Officer | 54,804 | 0 | 30 Dec, 2025 |
| Carmen Jeffrey Del | Chief Commercial Officer | 14,337 | 0 | 30 Dec, 2025 |
| Michael Wayne Kalb | Executive Vice President Cfo | 13,665 | 0 | 06 Jan, 2026 |
| Tamar Thompson | - | 3,773 | 0 | 10 Dec, 2025 |
| Molly Harper | - | 3,694 | 0 | 30 Dec, 2025 |
| Molly Harper | - | 2,360 | 0 | 16 Dec, 2025 |
| Gregg Russo | Chief Hr Officer | 476 | 0 | 19 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 17 Feb, 2026 | Gregg Russo | Common Stock, par value $0.001 per share | A | 687 | - | 687 | D | M |
| 17 Feb, 2026 | Gregg Russo | Common Stock, par value $0.001 per share | D | 211 | - | 476 | D | F |
| 17 Feb, 2026 | Gregg Russo | Restricted Stock Units | D | 687 | $0.00 | 71,786 | D | M |
| 05 Jan, 2026 | Michael Wayne Kalb | Common Stock, par value $0.001 per share | A | 7,139 | - | 15,745 | D | M |
| 05 Jan, 2026 | Richard J Daly | Common Stock, par value $0.001 per share | A | 42,105 | - | 281,843 | D | M |
| 05 Jan, 2026 | Michael Wayne Kalb | Common Stock, par value $0.001 per share | D | 2,080 | - | 13,665 | D | F |
| 05 Jan, 2026 | Richard J Daly | Common Stock, par value $0.001 per share | D | 10,577 | - | 271,266 | D | F |
| 05 Jan, 2026 | Richard J Daly | Restricted Stock Units | D | 42,105 | $0.00 | 2,618,539 | D | M |
| 05 Jan, 2026 | Michael Wayne Kalb | Restricted Stock Units | D | 7,139 | $0.00 | 632,903 | D | M |
| 29 Dec, 2025 | Preethi Sundaram | Common Stock, par value $0.001 per share | A | 6,667 | - | 57,173 | D | M |
| 29 Dec, 2025 | Steve Miller | Common stock, par value $0.001 per share | A | 14,000 | - | 1,093,803 | D | M |
| 29 Dec, 2025 | Brian Elsbernd | Common Stock, par value $0.001 per share | A | 6,667 | - | 245,124 | D | M |
| 29 Dec, 2025 | Carmen Jeffrey Del | Common Stock, par value $0.001 per share | A | 8,667 | - | 18,176 | D | M |
| 29 Dec, 2025 | Richard J Daly | Common Stock, par value $0.001 per share | A | 1,334 | - | 240,262 | D | M |
| 29 Dec, 2025 | Molly Harper | Common Stock, par value $0.001 per share | A | 1,334 | - | 3,694 | D | M |
| 29 Dec, 2025 | Richard J Daly | Common Stock, par value $0.001 per share | D | 524 | - | 239,738 | D | F |
| 29 Dec, 2025 | Carmen Jeffrey Del | Common Stock, par value $0.001 per share | D | 3,839 | - | 14,337 | D | F |
| 29 Dec, 2025 | Molly Harper | Restricted Stock Units | D | 1,334 | $0.00 | 127,163 | D | M |
| 29 Dec, 2025 | Preethi Sundaram | Common Stock, par value $0.001 per share | D | 2,369 | - | 54,804 | D | F |
| 29 Dec, 2025 | Brian Elsbernd | Common Stock, par value $0.001 per share | D | 2,623 | - | 242,501 | D | F |