Catalyst Pharmaceuticals's top three insider shareholders as of May 30, 2026 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 |
|---|---|---|---|---|
| Philip H Coelho | - | 239,553 | 0 | 06 Dec, 2021 |
| Charles B O'Keeffe | - | 732,470 | 0 | 19 Feb, 2025 |
| Steve Miller | Chief Op. Scientific Officer | 1,093,803 | 0 | 30 Dec, 2025 |
| Alicia Grande | Vp, Treasurer And Cfo | 90,557 | 0 | 12 Dec, 2023 |
| Richard J Daly | President And Ceo | 271,266 | 0 | 06 Jan, 2026 |
| Michael Wayne Kalb | Executive Vice President Cfo | 13,665 | 0 | 06 Jan, 2026 |
| Brian Elsbernd | Chief Compliance/Legal Officer | 242,501 | 0 | 30 Dec, 2025 |
| Carmen Jeffrey Del | Chief Commercial Officer | 14,337 | 0 | 30 Dec, 2025 |
| Tamar Thompson | - | 3,773 | 0 | 10 Dec, 2025 |
| Molly Harper | - | 3,694 | 0 | 30 Dec, 2025 |
| Preethi Sundaram | Chief Strategy Officer | 54,804 | 0 | 30 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 | 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 | 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 |
| 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 | A | 7,139 | - | 15,745 | 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 | Michael Wayne Kalb | Common Stock, par value $0.001 per share | D | 2,080 | - | 13,665 | D | F |
| 05 Jan, 2026 | Michael Wayne Kalb | Restricted Stock Units | D | 7,139 | $0.00 | 632,903 | D | M |
| 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 | Brian Elsbernd | Common Stock, par value $0.001 per share | A | 6,667 | - | 245,124 | 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 | Preethi Sundaram | Common Stock, par value $0.001 per share | A | 6,667 | - | 57,173 | 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 | Steve Miller | Common stock, par value $0.001 per share | A | 14,000 | - | 1,093,803 | D | M |