Ardelyx ARDX Insider Ownership

NASDAQ ARDX
$3.74 +0.03 (+0.81%)
As of: Sep 4, 2026 · 11:48 AM EDT

Insider Holdings by Owner

21.16Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
1.38%
0% pp QoQ
Shares Held by Insiders
3.35Mn
filed for Sep 2026
0.00% QoQ
Shares Outstanding
241.91Mn
241,908,407 shares
Direct Holdings
3.35Mn
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
23
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

ARDX's three largest insider shareholders as of August 29, 2026 are Scott D Sandell (TenPercentOwner, 10.75Mn shares), David M Mott (Director, 3.35Mn shares), David M Mott (Director, 3.30Mn shares).

Form 4 Holdings

Insiders Holding ARDX

Insiders 23
Shares held 21.16Mn
Of outstanding 8.75%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Scott D Sandell TenPercentOwner 0 10,752,012 10,752,012 50.8% 27 Dec, 2021
2 David M Mott Director 3,349,655 0 3,349,655 15.8% 18 Jun, 2026
3 Michael Raab President Ceo 1,619,792 0 1,619,792 7.7% 25 Aug, 2026
4 Susan Rodriguez Chief Commercial Officer 449,092 0 449,092 2.1% 23 May, 2024
5 David P. Rosenbaum Chief Development Officer 297,005 151,373 448,378 2.1% 22 Nov, 2024
6 Richard J Rodgers Director 439,998 0 439,998 2.1% 18 Jun, 2026
7 Eric Duane Foster Chief Commercial Officer 409,410 0 409,410 1.9% 25 Aug, 2026
8 Justin A Renz Chief Financial Officer 409,052 0 409,052 1.9% 25 Aug, 2025
9 Laura A Williams Chief Patient Officer 367,456 0 367,456 1.7% 25 Aug, 2026
10 Mike Kelliher Chief Business Officer 349,660 0 349,660 1.7% 25 Aug, 2026
11 William C Jr Bertrand Director 329,507 0 329,507 1.6% 18 Jun, 2026
12 John E Bishop Officer 317,095 0 317,095 1.5% 25 Aug, 2026
13 Robert Blanks Officer 314,421 0 314,421 1.5% 22 Nov, 2024
14 Elizabeth A Grammer Evp, General Counsel 299,895 0 299,895 1.4% 25 Nov, 2025
15 James Parker Brady Chief Human Resources Officer 245,930 0 245,930 1.2% 25 Aug, 2026
16 Susan Hohenleitner Chief Financial Officer 227,520 0 227,520 1.1% 25 Aug, 2026
17 Onaiza Cadoret-Manier Director 178,156 0 178,156 0.8% 18 Jun, 2026
18 Jan M Lundberg Director 146,794 0 146,794 0.7% 16 Jun, 2023
19 Joseph James Reilly Officer 145,854 0 145,854 0.7% 25 Aug, 2026
20 Jeffrey W Jacobs Chief Scientific Officer 119,483 0 119,483 0.6% 24 Nov, 2021
21 Robert Ora Felsch Officer 91,560 0 91,560 0.4% 22 Aug, 2024
22 Merdad Parsey Director 83,746 0 83,746 0.4% 18 Jun, 2026
23 Robert B Bazemore Director 68,006 0 68,006 0.3% 18 Jun, 2026

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

2,545 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
21 Aug, 2026 James Parker Brady Chief Human Resources Officer Disposed S 1,976 $3.86 $7.62K 259,090 Direct
21 Aug, 2026 Susan Hohenleitner Chief Financial Officer Disposed S 1,558 $3.86 $6.01K 227,520 Direct
21 Aug, 2026 Eric Duane Foster Chief Commercial Officer Disposed S 2,598 $3.86 $10.02K 415,374 Direct
21 Aug, 2026 Mike Kelliher Chief Business Officer Disposed S 3,104 $3.86 $11.97K 354,314 Direct
21 Aug, 2026 John E Bishop Officer Disposed S 17,281 $3.86 $66.65K 319,564 Direct
21 Aug, 2026 Laura A Williams Chief Patient Officer Disposed S 3,486 $3.86 $13.45K 374,709 Direct
21 Aug, 2026 Michael Raab President Ceo Disposed S 15,009 $3.86 $57.89K 1,663,357 Direct
21 Aug, 2026 Joseph James Reilly Officer Disposed S 2,872 $3.86 $11.08K 146,964 Direct
21 Aug, 2026 Laura A Williams Chief Patient Officer Disposed S 3,089 $3.86 $11.91K 371,620 Direct
21 Aug, 2026 Eric Duane Foster Chief Commercial Officer Disposed S 3,389 $3.86 $13.07K 411,985 Direct
21 Aug, 2026 James Parker Brady Chief Human Resources Officer Disposed S 13,160 $3.86 $50.76K 245,930 Direct
21 Aug, 2026 Mike Kelliher Chief Business Officer Disposed S 2,652 $3.86 $10.23K 351,662 Direct
21 Aug, 2026 John E Bishop Officer Disposed S 2,469 $3.86 $9.52K 317,095 Direct
21 Aug, 2026 Michael Raab President Ceo Disposed S 15,976 $3.86 $61.62K 1,647,381 Direct
21 Aug, 2026 Joseph James Reilly Officer Disposed S 1,110 $3.86 $4.28K 145,854 Direct
21 Aug, 2026 Mike Kelliher Chief Business Officer Disposed S 2,002 $3.86 $7.72K 349,660 Direct
21 Aug, 2026 Laura A Williams Chief Patient Officer Disposed S 2,430 $3.86 $9.37K 369,190 Direct
21 Aug, 2026 Eric Duane Foster Chief Commercial Officer Disposed S 2,575 $3.86 $9.93K 409,410 Direct
21 Aug, 2026 Michael Raab President Ceo Disposed S 8,411 $3.86 $32.44K 1,638,970 Direct
21 Aug, 2026 Laura A Williams Chief Patient Officer Disposed S 1,734 $3.86 $6.69K 367,456 Direct