Ardelyx, Inc. (ARDX) Insider Ownership

Historic Ownership Trends

Based on data from the past 90 days ending December 12, 2025, Ardelyx's three largest insider shareholders are President & CEO Michael Raab (1.46Mn shares), Director Richard J Rodgers (413.54K shares), Chief Financial Officer Justin A Renz (409.05K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
David M Mott 2,969,585 23 Jun, 2025
Forest Baskett 2,258,850 27 Dec, 2021
Scott D Sandell 2,258,850 27 Dec, 2021
Michael Raab President & CEO 1,455,363 25 Nov, 2025
Susan Rodriguez Chief Commercial Officer 449,092 23 May, 2024
David P. Rosenbaum Chief Development Officer 448,378 22 Nov, 2024
Richard J Rodgers 413,543 23 Jun, 2025
Justin A Renz Chief Financial Officer 409,052 25 Aug, 2025
Laura A Williams Chief Patient Officer 359,896 25 Nov, 2025
Robert Blanks 314,421 22 Nov, 2024
Elizabeth A Grammer 302,866 25 Nov, 2025
Eric Duane Foster Chief Commercial Officer 295,684 25 Nov, 2025
William C Jr Bertrand 290,707 23 Jun, 2025
Mike Kelliher 271,181 25 Nov, 2025
Onaiza Cadoret-Manier 151,701 23 Jun, 2025
Jan M Lundberg 146,794 16 Jun, 2023
Muna Bhanji 137,353 23 Jun, 2025
Jeffrey W Jacobs Chief Scientific Officer 119,483 24 Nov, 2021
Joseph James Reilly 108,914 25 Nov, 2025
Robert Ora Felsch 91,560 22 Aug, 2024
Merdad Parsey 57,291 23 Jun, 2025
Robert B Bazemore 41,551 23 Jun, 2025

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
21 Nov, 2025 Joseph James Reilly Common Stock D 11,086 $5.54 108,914 D S
21 Nov, 2025 Michael Raab Common Stock D 46,887 $5.54 1,455,363 D S
21 Nov, 2025 Elizabeth A Grammer Common Stock D 5,995 $5.54 299,895 D S
21 Nov, 2025 Mike Kelliher Common Stock D 5,560 $5.54 271,181 D S
21 Nov, 2025 Eric Duane Foster Common Stock D 5,814 $5.54 295,684 D S
21 Nov, 2025 Laura A Williams Common Stock D 6,426 $5.54 359,896 D S
26 Aug, 2025 Laura A Williams Common Stock A 50,000 $0.99 446,322 D M
26 Aug, 2025 Laura A Williams Common Stock D 50,000 $6.12 396,322 D S
26 Aug, 2025 Laura A Williams Common Stock D 30,000 $6.12 366,322 D S
21 Aug, 2025 Justin A Renz Common Stock D 7,037 $5.93 409,052 D S
21 Aug, 2025 Laura A Williams Common Stock D 6,261 $5.93 396,322 D S
21 Aug, 2025 Michael Raab Common Stock D 45,687 $5.93 1,502,250 D S
21 Aug, 2025 Justin A Renz - - 409,052 D
21 Aug, 2025 Mike Kelliher Common Stock D 5,417 $5.93 276,741 D S
21 Aug, 2025 Eric Duane Foster Common Stock D 15,308 $5.93 301,498 D S
21 Aug, 2025 Elizabeth A Grammer Common Stock D 5,841 $5.93 305,890 D S
18 Jun, 2025 William C Jr Bertrand Common Stock A 19,390 $0.00 249,156 D A
18 Jun, 2025 Merdad Parsey Common Stock A 15,235 $0.00 57,291 D A
18 Jun, 2025 Richard J Rodgers Common Stock A 21,468 $0.00 371,992 D A
18 Jun, 2025 David M Mott Common Stock A 31,163 $0.00 2,928,034 D A