Ardelyx, Inc. (ARDX) Insider Trading
Over the last 3 months, ARDX insiders made 0 open-market buys and 21 sales, a net sale of -$1.1M (SEC Form 4). Over the last 6 months, 201 institutions increased and 140 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
21
Net (3m)
-$1.1M
Insider trades by month Buys Sells
Aug
Nov
Jan
Feb
Apr
May
Context3-month price -13.9%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 22, 2026 | Brady James Parkerofficer: Chief Human Resources Officer | Sell | 1,846 | $6.27 |
| May 22, 2026 | Kelliher Mikeofficer: Chief Business Officer | Sell | 2,900 | $6.27 |
| May 22, 2026 | Reilly Joseph Jamesofficer: See Remarks | Sell | 2,683 | $6.27 |
| May 22, 2026 | Bishop John Eofficer: See Remarks | Sell | 2,306 | $6.27 |
| May 22, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 14,933 | $6.27 |
| May 22, 2026 | Williams Laura Aofficer: Chief Patient Officer | Sell | 1,911 | $6.27 |
| May 22, 2026 | Foster Eric Duaneofficer: Chief Commercial Officer | Sell | 3,166 | $6.27 |
| May 22, 2026 | Kelliher Mikeofficer: Chief Business Officer | Sell | 2,478 | $6.27 |
| May 22, 2026 | Williams Laura Aofficer: Chief Patient Officer | Sell | 1,418 | $6.27 |
| May 22, 2026 | Foster Eric Duaneofficer: Chief Commercial Officer | Sell | 2,405 | $6.27 |
| May 22, 2026 | Williams Laura Aofficer: Chief Patient Officer | Sell | 1,503 | $6.27 |
| May 22, 2026 | Foster Eric Duaneofficer: Chief Commercial Officer | Sell | 2,427 | $6.27 |
| May 22, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 17,926 | $6.27 |
| May 22, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 14,028 | $6.27 |
| May 22, 2026 | Reilly Joseph Jamesofficer: See Remarks | Sell | 1,036 | $6.27 |
| May 22, 2026 | Hohenleitner Susanofficer: Chief Financial Officer | Sell | 1,455 | $6.27 |
| May 22, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 7,861 | $6.27 |
| May 22, 2026 | Williams Laura Aofficer: Chief Patient Officer | Sell | 2,157 | $6.27 |
| May 22, 2026 | Kelliher Mikeofficer: Chief Business Officer | Sell | 1,870 | $6.27 |
| May 19, 2026 | RAAB MICHAELdirector, officer: President & CEO | Option | 20,833 | $0.99 |
| May 19, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 41,666 | $6.28 |
| Apr 17, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 41,668 | $6.29 |
| Apr 17, 2026 | RAAB MICHAELdirector, officer: President & CEO | Option | 20,834 | $0.99 |
| Feb 25, 2026 | RAAB MICHAELdirector, officer: President & CEO | Option | 20,833 | $0.99 |
| Feb 25, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 41,666 | $6.25 |
| Feb 23, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 40,401 | $5.87 |
| Feb 23, 2026 | Bishop John Eofficer: See Remarks | Sell | 386 | $5.71 |
| Feb 23, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 5,576 | $5.71 |
| Feb 23, 2026 | RAAB MICHAELdirector, officer: President & CEO | Sell | 1 | $5.70 |
| Feb 23, 2026 | MOTT DAVID Mdirector | Buy | 333,333 | $5.84 |
Source: ARDX SEC Form 4 filings, latest May 22, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ARDX positions over the last 6 months (SEC Form 13F).
Increased
201
New positions
74
Reduced
140
Sold out
60
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 21.2M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 21.1M | Feb 12, 2026 |
| VANGUARD GROUP INC | Increased | 19.0M | Jan 29, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 17.8M | May 15, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 14.5M | Feb 17, 2026 |
| STATE STREET CORP | Increased | 13.6M | May 15, 2026 |
| STATE STREET CORP | Increased | 11.9M | Feb 13, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 11.9M | Feb 17, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 10.4M | May 15, 2026 |
| MACQUARIE MANAGEMENT HOLDINGS, INC. | New Position | 9.3M | Feb 17, 2026 |
| JANUS HENDERSON GROUP PLC | Reduced | 8.4M | May 18, 2026 |
| MACQUARIE MANAGEMENT HOLDINGS, INC. | Reduced | 8.2M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 6.7M | May 8, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 6.0M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 5.8M | Feb 9, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.