CorMedix CRMD Insider Ownership

NASDAQ CRMD
$8.13 -0.05 (-0.61%)
At close: Sep 9, 2026 · 4:00 PM EDT

Insider Holdings by Owner

2.40Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
2.79%
-0.029% pp QoQ
Shares Held by Insiders
2.40Mn
filed for Sep 2026
-1.03% QoQ
Shares Outstanding
86.21Mn
86,214,170 shares
Direct Holdings
2.40Mn
Indirect: 0
Net Shares Traded (QoQ)
-24.92K
net selling in Sep 2026
Insiders Holding Shares
14
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

CorMedix's top three insider shareholders as of September 09, 2026 are Joseph Todisco (Chief Executive Officer, 774.75K shares), Elizabeth Hurlburt (Chief Operating Officer, 270.46K shares), Kaufman Beth Zelnick (Chief Legal Officer, 269.11K shares).

Form 4 Holdings

Insiders Holding CRMD

Insiders 14
Shares held 2.40Mn
Of outstanding 2.79%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Joseph Todisco Chief Executive Officer 774,749 0 774,749 32.3% 06 Feb, 2026
2 Elizabeth Hurlburt Chief Operating Officer 270,463 0 270,463 11.3% 01 Sep, 2026
3 Kaufman Beth Zelnick Chief Legal Officer 260,684 0 260,684 10.9% 01 Sep, 2026
4 Myron Kaplan Director 231,487 0 231,487 9.6% 27 Jan, 2026
5 Michael David Seckler Chief Commercial Officer 133,156 0 133,156 5.5% 15 Jan, 2026
6 Steven W Lefkowitz Director 125,951 0 125,951 5.2% 27 Jan, 2026
7 Susan Blum Chief Financial Officer 124,315 0 124,315 5.2% 01 Sep, 2026
8 Erin Mistry Evp, Chief Commercial Officer 100,992 0 100,992 4.2% 14 Jan, 2025
9 Matthew T David Chief Financial Officer 95,270 0 95,270 4.0% 14 Jan, 2025
10 Alan W Dunton Director 70,703 0 70,703 2.9% 27 Jan, 2026
11 Janet Dillione Director 68,926 0 68,926 2.9% 27 Jan, 2026
12 Gregory Scott Duncan Director 68,786 0 68,786 2.9% 27 Jan, 2026
13 Robert A Stewart Director 66,453 0 66,453 2.8% 27 Jan, 2026
14 Paulo F Costa Director 10,000 0 10,000 0.4% 18 May, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,954 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
29 Aug, 2026 Kaufman Beth Zelnick Chief Legal Officer Disposed F 8,424 $8.30 $69.92K 260,684 Direct
29 Aug, 2026 Susan Blum Chief Financial Officer Disposed F 8,424 $8.30 $69.92K 124,315 Direct
29 Aug, 2026 Elizabeth Hurlburt Chief Operating Officer Disposed F 8,076 $8.30 $67.03K 270,463 Direct
04 Feb, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 36,006 $0.00 $0 269,108 Direct
04 Feb, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 36,006 $0.00 $0 269,108 Direct
04 Feb, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 36,006 $0.00 $0 269,108 Direct
04 Feb, 2026 Joseph Todisco Chief Executive Officer Acquired A 77,156 $0.00 $0 774,749 Direct
04 Feb, 2026 Elizabeth Hurlburt Chief Operating Officer Acquired A 36,006 $0.00 $0 278,539 Direct
04 Feb, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 36,006 $0.00 $0 269,108 Direct
26 Jan, 2026 Janet Dillione Director Acquired A 30,453 $0.00 $0 68,926 Direct
23 Jan, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 72,820 $0.00 $0 241,905 Direct
23 Jan, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 72,820 $0.00 $0 241,905 Direct
26 Jan, 2026 Robert A Stewart Director Acquired A 30,453 $0.00 $0 66,453 Direct
26 Jan, 2026 Myron Kaplan Director Acquired A 30,453 $0.00 $0 231,487 Direct
26 Jan, 2026 Steven W Lefkowitz Director Acquired A 30,453 $0.00 $0 125,951 Direct
26 Jan, 2026 Steven W Lefkowitz Director Acquired A 30,453 $0.00 $0 125,951 Direct
26 Jan, 2026 Myron Kaplan Director Acquired A 30,453 $0.00 $0 231,487 Direct
23 Jan, 2026 Kaufman Beth Zelnick Chief Legal Officer Acquired A 72,820 $0.00 $0 241,905 Direct
26 Jan, 2026 Steven W Lefkowitz Director Acquired A 30,453 $0.00 $0 125,951 Direct
26 Jan, 2026 Myron Kaplan Director Acquired A 30,453 $0.00 $0 231,487 Direct