Based on data from the past 90 days ending December 12, 2025, CorMedix's three largest insider shareholders are Director Myron Kaplan (201.03K shares), Chief Legal Officer Kaufman Beth Zelnick (180.42K shares), Chief Operating Officer Elizabeth Hurlburt (176.99K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Joseph Todisco | Chief Executive Officer | 509,496 | 12 Sep, 2025 |
| Myron Kaplan | 201,034 | 27 Oct, 2025 | |
| Kaufman Beth Zelnick | Chief Legal Officer | 180,418 | 11 Sep, 2025 |
| Elizabeth Hurlburt | Chief Operating Officer | 176,990 | 11 Sep, 2025 |
| Erin Mistry | EVP And Chief Commercial Officer | 100,992 | 14 Jan, 2025 |
| Matthew T David | Chief Financial Officer | 95,270 | 14 Jan, 2025 |
| Steven W Lefkowitz | 80,498 | 10 Dec, 2025 | |
| Susan Blum | Chief Financial Officer | 69,686 | 03 Sep, 2025 |
| Janet Dillione | 48,473 | 11 Dec, 2025 | |
| Alan W Dunton | 40,250 | 16 Sep, 2025 | |
| Gregory Scott Duncan | 38,333 | 18 Sep, 2025 | |
| Robert A Stewart | 36,000 | 22 Jan, 2025 | |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 09 Dec, 2025 | Steven W Lefkowitz | Common Stock | D | 40,000 | $11.88 | 80,498 | D | S |
| 09 Dec, 2025 | Janet Dillione | Common Stock | A | 19,000 | $9.55 | 67,473 | D | M |
| 09 Dec, 2025 | Janet Dillione | Common Stock | A | 15,000 | $5.63 | 82,473 | D | M |
| 09 Dec, 2025 | Janet Dillione | Common Stock | D | 34,000 | $12.00 | 48,473 | D | S |
| 02 Dec, 2025 | Janet Dillione | Common Stock | A | 12,210 | $4.03 | 60,683 | D | M |
| 02 Dec, 2025 | Janet Dillione | Common Stock | A | 15,124 | $4.43 | 75,807 | D | M |
| 02 Dec, 2025 | Janet Dillione | Common Stock | A | 19,323 | $3.55 | 95,130 | D | M |
| 02 Dec, 2025 | Janet Dillione | Common Stock | D | 46,657 | $10.00 | 48,473 | D | S |
| 24 Nov, 2025 | Janet Dillione | Common Stock | A | 8,000 | $2.85 | 56,473 | D | M |
| 24 Nov, 2025 | Janet Dillione | Common Stock | A | 7,790 | $4.03 | 64,263 | D | M |
| 24 Nov, 2025 | Janet Dillione | Common Stock | A | 4,876 | $4.43 | 69,139 | D | M |
| 24 Nov, 2025 | Janet Dillione | Common Stock | A | 5,677 | $3.55 | 74,816 | D | M |
| 24 Nov, 2025 | Janet Dillione | Common Stock | D | 26,343 | $9.93 | 48,473 | D | S |
| 14 Nov, 2025 | Janet Dillione | Common Stock | D | 30,000 | $11.42 | 48,473 | D | S |
| 23 Oct, 2025 | Myron Kaplan | Common Stock | A | 25,000 | $11.02 | 201,034 | D | P |
| 16 Sep, 2025 | Gregory Scott Duncan | Common Stock | A | 13,333 | $8.32 | 38,333 | D | M |
| 16 Sep, 2025 | Gregory Scott Duncan | - | - | 38,333 | D | |||
| 12 Sep, 2025 | Alan W Dunton | Common Stock | A | 10,000 | $3.55 | 50,250 | D | M |
| 12 Sep, 2025 | Alan W Dunton | - | - | 50,250 | D | |||
| 12 Sep, 2025 | Joseph Todisco | Common Stock | A | 50,000 | $3.47 | 559,496 | D | M |