Comparable stake leader
Rubric Capital Management LP
SEC ownership of ARDELYX, INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001437402.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- ARDX on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Rubric Capital Management LP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Rubric Capital Management LP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001437402
- Issuer location
- Fremont, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ARDELYX, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Rubric Capital Management LP
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 6.6%
13D/G row: Rubric Capital Management LP
Showing 1-8 of 50 holder rows.
Quick read
Rubric Capital Management LP leads the comparable SEC ownership view at 6.6%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Rubric Capital Management LP's linked filing trail.
Comparable ownership
Top 5
Rubric Capital Management LP
6.6%
INTEGRATED CORE STRATEGIES (US) LLC
5.7%
STATE STREET CORP
5.5%
Janus Henderson Group Ltd.
3.4%
MILLENNIUM MANAGEMENT LLC
3.2%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Rubric Capital Management LP |
13D/G
13F
Company
|
6.6%
|
$83,605,932
16,202,700 shares
|
$0 | 30 Jun 2026 |
| INTEGRATED CORE STRATEGIES (US) LLC |
13D/G
Millennium Management LLC
|
5.7%
|
$73,275,989
14,200,773 shares
|
-$19,830,897 | 30 Jun 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
5.5%
|
$83,122,316
13,604,307 shares
|
+$12,289,611 | 31 Mar 2026 |
| Janus Henderson Group Ltd. |
13D/G
JANUS HENDERSON GROUP PLC
|
3.4%
|
$51,148,240
8,371,234 shares
|
-$33,316,968 | 31 Mar 2026 |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
Company
|
3.2%
from 13D/G
|
$70,893,942
13,900,773 shares
|
— | 30 Jun 2026 |
| Edward R. Conner |
3/4/5
Chief Medical Officer
|
0.12%
|
$1,665,452
302,260 shares
|
— | 01 Aug 2025 |
| Felecia Ettenberg |
3/4/5
Chief Legal Officer
|
0.1%
|
$1,419,630
237,000 shares
|
— | 20 Apr 2026 |
| Rajani Dinavahi |
3/4/5
Chief Medical Officer
|
0.08%
|
$1,171,830
201,000 shares
|
— | 01 Apr 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$2,356,020.
Buys
$1,946,331
Insiders: 1
Sells
$4,302,352
Insiders: 9
Net
-$2,356,020
Shares: -429,639
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 333,333
Shares: 762,972
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 291,291 | $0 | $1,423,954 | -$1,423,954 |
| 3-6 | 0 | 211,309 | $0 | $1,307,838 | -$1,307,838 |
| 6-9 | 333,333 | 178,604 | $1,946,331 | $1,117,819 | +$828,512 |
| 9-12 | 0 | 81,768 | $0 | $452,741 | -$452,741 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 29 reporting-owner rows connected to ARDELYX, INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
29
Largest Forms 3/4/5 holder
David M. Mott
Net 12M change
-$2,356,022
Latest report
21 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| David M. Mott | Director | $20,064,433 | +$1,946,331 | +11% | Mixed | 16 Jun 2026 |
| Forest Baskett | 10%+ Owner | $14,998,764 | Mixed | 09 Dec 2021 | ||
| Scott D. Sandell | 10%+ Owner | $14,998,764 | Mixed | 09 Dec 2021 | ||
| Michael Raab | President & CEO, Director | $7,265,542 | -$2,572,283 | -26% | Mixed | 21 Aug 2026 |
| Susan Rodriguez | Chief Commercial Officer | $3,844,258 | Mixed | 21 May 2024 | ||
| Justin A. Renz | Chief Financial Officer | $2,902,017 | Mixed | 21 Aug 2025 | ||
| Richard J. Rodgers | Director | $2,635,588 | Mixed | 16 Jun 2026 | ||
| David P. Rosenbaum | Chief Development Officer | $2,521,763 | Mixed | 20 Nov 2024 | ||
| Elizabeth A. Grammer | Chief Legal and Administrative Officer | $2,136,132 | -$33,194 | -1.5% | Mixed | 21 Nov 2025 |
| William C. Bertrand Jr. | Director | $2,067,110 | Mixed | 16 Jun 2026 | ||
| Eric Duane Foster | Chief Commercial Officer | $2,054,697 | -$176,376 | -7.9% | Mixed | 21 Aug 2026 |
| Robert Blanks | Chief Regulatory and Quality Affairs Officer | $1,843,891 | Mixed | 20 Nov 2024 | ||
| Mike Kelliher | Chief Business Officer | $1,824,247 | -$162,233 | -8.2% | Mixed | 21 Aug 2026 |
| Laura A. Williams | Chief Patient Officer | $1,783,105 | -$1,007,994 | -36% | Mixed | 21 Aug 2026 |
| Edward R. Conner | Chief Medical Officer | $1,665,452 | Mixed | 01 Aug 2025 | ||
| Felecia Ettenberg | Chief Legal Officer | $1,419,630 | Mixed | 20 Apr 2026 | ||
| John E. Bishop | Chief Technical and Quality Officer | $1,223,003 | -$109,213 | -8.2% | Filing P/S | 21 Aug 2026 |
| Rajani Dinavahi | Chief Medical Officer | $1,171,830 | Mixed | 01 Apr 2026 | ||
| Onaiza Cadoret-Manier | Director | $1,160,518 | Mixed | 16 Jun 2026 | ||
| Jan M. Lundberg | Director | $1,088,942 | Mixed | 15 Jun 2023 |
Recent insider transactions for ARDELYX, INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Susan Hohenleitner | ARDX | Common Stock | Sale | -0.68% | $6,009 | $3.86 | -1,558 | 227,520 | 21 Aug 2026 | Direct |
| Joseph J. Reilly | ARDX | Common Stock | Sale | -2.66% | $15,358 | $3.86 | -3,982 | 145,854 | 21 Aug 2026 | Direct |
| John E. Bishop | ARDX | Common Stock | Sale | -5.86% | $76,174 | $3.86 | -19,750 | 317,095 | 21 Aug 2026 | Direct |
| James Parker Brady | ARDX | Common Stock | Sale | -5.8% | $58,378 | $3.86 | -15,136 | 245,930 | 21 Aug 2026 | Direct |
| Eric Duane Foster | ARDX | Common Stock | Sale | -2.05% | $33,023 | $3.86 | -8,562 | 409,410 | 21 Aug 2026 | Direct |
| Mike Kelliher | ARDX | Common Stock | Sale | -2.17% | $29,922 | $3.86 | -7,758 | 349,660 | 21 Aug 2026 | Direct |
| Laura A. Williams | ARDX | Common Stock | Sale | -2.84% | $41,419 | $3.86 | -10,739 | 367,456 | 21 Aug 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Sale | -3.49% | $225,914 | $3.86 | -58,574 | 1,619,792 | 21 Aug 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Sale | -2.42% | $210,923 | $5.06 | -41,668 | 1,678,366 | 15 Jul 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.23% | 20,834 | 1,720,034 | 15 Jul 2026 | Direct | ||
| Michael Raab | ARDX | Stock Option (Right to Buy) | Options Exercise | -6.68% | -20,834 | 290,834 | 15 Jul 2026 | Direct | ||
| Laura A. Williams | ARDX | Common Stock | Sale | -17.8% | $490,487 | $5.99 | -81,898 | 378,195 | 18 Jun 2026 | Direct |
| Laura A. Williams | ARDX | Common Stock | Options Exercise | 7.22% | 31,000 | 460,093 | 18 Jun 2026 | Direct | ||
| Laura A. Williams | ARDX | Stock Option (Right to Buy) | Options Exercise | -50% | -31,000 | 31,000 | 18 Jun 2026 | Direct | ||
| Merdad Parsey | ARDX | Common Stock | Award | 46.2% | 26,455 | 83,746 | 16 Jun 2026 | Direct | ||
| Merdad Parsey | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| Richard J. Rodgers | ARDX | Common Stock | Award | 6.4% | 26,455 | 439,998 | 16 Jun 2026 | Direct | ||
| Richard J. Rodgers | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| David M. Mott | ARDX | Common Stock | Award | 1.42% | 46,737 | 3,349,655 | 16 Jun 2026 | Direct | ||
| David M. Mott | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| Onaiza Cadoret-Manier | ARDX | Common Stock | Award | 17.4% | 26,455 | 178,156 | 16 Jun 2026 | Direct | ||
| Onaiza Cadoret-Manier | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| Muna Bhanji | ARDX | Common Stock | Award | 19.3% | 26,455 | 163,808 | 16 Jun 2026 | Direct | ||
| Muna Bhanji | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| William C. Bertrand Jr. | ARDX | Common Stock | Award | 13.4% | 38,800 | 329,507 | 16 Jun 2026 | Direct | ||
| William C. Bertrand Jr. | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| Robert B. Bazemore | ARDX | Common Stock | Award | 63.7% | 26,455 | 68,006 | 16 Jun 2026 | Direct | ||
| Robert B. Bazemore | ARDX | Stock Option (Right to Buy) | Award | 39,715 | 39,715 | 16 Jun 2026 | Direct | |||
| Michael Raab | ARDX | Common Stock | Sale | -2.39% | $236,346 | $5.67 | -41,666 | 1,699,200 | 15 Jun 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.21% | 20,833 | 1,740,866 | 15 Jun 2026 | Direct | ||
| Michael Raab | ARDX | Stock Option (Right to Buy) | Options Exercise | -6.27% | -20,833 | 311,668 | 15 Jun 2026 | Direct | ||
| Joseph J. Reilly | ARDX | Common Stock | Sale | -2.43% | $23,309 | $6.27 | -3,719 | 149,107 | 21 May 2026 | Direct |
| Susan Hohenleitner | ARDX | Common Stock | Sale | -0.63% | $9,119 | $6.27 | -1,455 | 229,078 | 21 May 2026 | Direct |
| John E. Bishop | ARDX | Common Stock | Sale | -0.68% | $14,453 | $6.27 | -2,306 | 336,845 | 21 May 2026 | Direct |
| James Parker Brady | ARDX | Common Stock | Sale | -0.7% | $11,570 | $6.27 | -1,846 | 261,066 | 21 May 2026 | Direct |
| Eric D. Foster | ARDX | Common Stock | Sale | -1.88% | $50,127 | $6.27 | -7,998 | 417,972 | 21 May 2026 | Direct |
| Mike Kelliher | ARDX | Common Stock | Sale | -1.99% | $45,427 | $6.27 | -7,248 | 357,418 | 21 May 2026 | Direct |
| Laura A. Williams | ARDX | Common Stock | Sale | -1.6% | $43,804 | $6.27 | -6,989 | 429,093 | 21 May 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Sale | -3.08% | $343,133 | $6.27 | -54,748 | 1,720,033 | 21 May 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Sale | -2.29% | $261,612 | $6.28 | -41,666 | 1,774,781 | 15 May 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.16% | 20,833 | 1,816,447 | 15 May 2026 | Direct | ||
| Michael Raab | ARDX | Stock Option (Right to Buy) | Options Exercise | -5.9% | -20,833 | 332,501 | 15 May 2026 | Direct | ||
| Michael Raab | ARDX | Common Stock | Sale | -2.27% | $261,954 | $6.29 | -41,668 | 1,795,614 | 15 Apr 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.15% | 20,834 | 1,837,282 | 15 Apr 2026 | Direct | ||
| Michael Raab | ARDX | Stock Option (Right to Buy) | Options Exercise | -5.57% | -20,834 | 353,334 | 15 Apr 2026 | Direct | ||
| Michael Raab | ARDX | Common Stock | Sale | -2.24% | $243,329 | $5.84 | -41,666 | 1,816,448 | 16 Mar 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.13% | 20,833 | 1,856,986 | 16 Mar 2026 | Direct | ||
| Michael Raab | ARDX | Stock Option (Right to Buy) | Options Exercise | -5.27% | -20,833 | 374,168 | 16 Mar 2026 | Direct | ||
| Michael Raab | ARDX | Common Stock | Sale | -2.22% | $260,621 | $6.26 | -41,666 | 1,836,153 | 24 Feb 2026 | Direct |
| Michael Raab | ARDX | Common Stock | Options Exercise | 1.12% | 20,833 | 1,877,819 | 24 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.