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).
| 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.
| 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 |