According to recent filings covering the 90 days ending February 07, 2026, the three most significant insider holders at CorMedix are Chief Executive Officer Joseph Todisco (774.75K shares), Chief Operating Officer Elizabeth Hurlburt (278.54K shares), Chief Legal Officer Kaufman Beth Zelnick (269.11K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Joseph Todisco | Chief Executive Officer | 774,749 | 06 Feb, 2026 |
| Elizabeth Hurlburt | Chief Operating Officer | 278,539 | 06 Feb, 2026 |
| Kaufman Beth Zelnick | Chief Legal Officer | 269,108 | 06 Feb, 2026 |
| Myron Kaplan | 231,487 | 27 Jan, 2026 | |
| Michael David Seckler | Chief Commercial Officer | 133,156 | 15 Jan, 2026 |
| Susan Blum | Chief Financial Officer | 132,739 | 27 Jan, 2026 |
| Steven W Lefkowitz | 125,951 | 27 Jan, 2026 | |
| Erin Mistry | Evp And Chief Commercial Officer | 100,992 | 14 Jan, 2025 |
| Matthew T David | Chief Financial Officer | 95,270 | 14 Jan, 2025 |
| Alan W Dunton | 70,703 | 27 Jan, 2026 | |
| Janet Dillione | 68,926 | 27 Jan, 2026 | |
| Gregory Scott Duncan | 68,786 | 27 Jan, 2026 | |
| Robert A Stewart | 66,453 | 27 Jan, 2026 | |
| Paulo F Costa | 10,000 | 18 May, 2023 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Feb, 2026 | Elizabeth Hurlburt | Common Stock | A | 36,006 | $0.00 | 278,539 | D | A |
| 04 Feb, 2026 | Joseph Todisco | Common Stock | A | 77,156 | $0.00 | 774,749 | D | A |
| 04 Feb, 2026 | Kaufman Beth Zelnick | Common Stock | A | 36,006 | $0.00 | 269,108 | D | A |
| 26 Jan, 2026 | Alan W Dunton | Common Stock | A | 30,453 | $0.00 | 70,703 | D | A |
| 26 Jan, 2026 | Steven W Lefkowitz | Common Stock | A | 30,453 | $0.00 | 125,951 | D | A |
| 26 Jan, 2026 | Robert A Stewart | Common Stock | A | 30,453 | $0.00 | 66,453 | D | A |
| 26 Jan, 2026 | Janet Dillione | Common Stock | A | 30,453 | $0.00 | 68,926 | D | A |
| 26 Jan, 2026 | Myron Kaplan | Common Stock | A | 30,453 | $0.00 | 231,487 | D | A |
| 26 Jan, 2026 | Gregory Scott Duncan | Common Stock | A | 30,453 | $0.00 | 68,786 | D | A |
| 23 Jan, 2026 | Elizabeth Hurlburt | Common Stock | D | 10,778 | $7.27 | 242,533 | D | F |
| 23 Jan, 2026 | Elizabeth Hurlburt | Common Stock | A | 93,010 | $0.00 | 253,311 | D | A |
| 23 Jan, 2026 | Joseph Todisco | Common Stock | D | 27,306 | $7.27 | 697,593 | D | F |
| 23 Jan, 2026 | Joseph Todisco | Common Stock | A | 225,900 | $0.00 | 724,899 | D | A |
| 23 Jan, 2026 | Susan Blum | Common Stock | A | 72,820 | $0.00 | 142,506 | D | A |
| 23 Jan, 2026 | Susan Blum | Common Stock | D | 9,767 | $7.27 | 132,739 | D | F |
| 23 Jan, 2026 | Kaufman Beth Zelnick | Common Stock | A | 72,820 | $0.00 | 241,905 | D | A |
| 23 Jan, 2026 | Kaufman Beth Zelnick | Common Stock | D | 8,803 | $7.27 | 233,102 | D | F |
| 21 Jan, 2026 | Janet Dillione | Common Stock | D | 10,000 | $6.88 | 38,473 | D | S |
| 17 Jan, 2026 | Joseph Todisco | Common Stock | D | 22,665 | $6.78 | 498,999 | D | F |
| 16 Jan, 2026 | Joseph Todisco | Common Stock | A | 29,585 | $3.38 | 521,664 | D | M |