According to recent filings covering the 90 days ending January 09, 2026, the three most significant insider holders at Ardelyx are Director David M Mott (2.97Mn shares), TenPercentOwner Forest Baskett (2.26Mn shares), TenPercentOwner Scott D Sandell (2.26Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| David M Mott | 2,969,585 | 23 Jun, 2025 | |
| Scott D Sandell | 2,258,850 | 27 Dec, 2021 | |
| Forest Baskett | 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 | Nan | 314,421 | 22 Nov, 2024 |
| Elizabeth A Grammer | Nan | 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 | Nan | 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 | Nan | 108,914 | 25 Nov, 2025 |
| Robert Ora Felsch | Nan | 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 | Elizabeth A Grammer | Common Stock | D | 5,995 | $5.54 | 299,895 | D | S |
| 21 Nov, 2025 | Michael Raab | Common Stock | D | 46,887 | $5.54 | 1,455,363 | D | S |
| 21 Nov, 2025 | Laura A Williams | Common Stock | D | 6,426 | $5.54 | 359,896 | 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 | Joseph James Reilly | Common Stock | D | 11,086 | $5.54 | 108,914 | D | S |
| 26 Aug, 2025 | Laura A Williams | Common Stock | D | 30,000 | $6.12 | 366,322 | D | S |
| 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 | A | 50,000 | $0.99 | 446,322 | D | M |
| 21 Aug, 2025 | Elizabeth A Grammer | Common Stock | D | 5,841 | $5.93 | 305,890 | 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 | 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 | 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 |
| 18 Jun, 2025 | David M Mott | Common Stock | A | 41,551 | $0.00 | 2,969,585 | D | A |
| 18 Jun, 2025 | David M Mott | Common Stock | A | 31,163 | $0.00 | 2,928,034 | D | A |
| 18 Jun, 2025 | William C Jr Bertrand | Common Stock | A | 19,390 | $0.00 | 249,156 | D | A |
| 18 Jun, 2025 | William C Jr Bertrand | Common Stock | A | 41,551 | $0.00 | 290,707 | D | A |