Ardelyx, Inc. (ARDX)
Nasdaq: ARDX · Pharmaceutical Preparations · Fremont, CA · filing with the SEC since 2008
Who owns Ardelyx, Inc.
As filed with the SECHolders of 5% or more
3
Rubric Capital Management LP holds 6.56% of Common Stock, $0.001 par value per share, as its SCHEDULE 13G filed Aug 14, 2026 says.
Directors and officers
20
report now, of 36 people on the record since 2014. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Rubric Capital Management LP
SCHEDULE 13G · filed Aug 14, 2026 · Common Stock, $0.001 par value per share
Millennium Management LLC
SCHEDULE 13G/A · filed Aug 11, 2026 · Common Stock, par value $0.0001 per share · 7.4% in Apr 27, 2026
State Street Corporation
SCHEDULE 13G · filed May 12, 2026 · COMMON STOCK · 4.9% in Feb 5, 2025
Janus Henderson Group PLC
SCHEDULE 13G/A · filed May 15, 2026 · Common Stock · reported falling below 5%, from 5.7% in Nov 14, 2025
Millennium Management LLC
SCHEDULE 13G/A · filed Oct 28, 2025 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 5.1% in Jun 25, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 7.81% in Jan 30, 2026
What ARDX reports owning in othersstakes of 5% or more, and other ties
Ardelyx, Inc. reports no stake in another company in the record.
Insider tradesForm 4
78sales
1purchases
8sales on a scheduled plan
9people selling
$4.3Msold, in dollars
$1.9Mbought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 53 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Raab Michael | President & CEO | 20 | $2.6M | 6 | 0 | $0 |
| Williams Laura A | Chief Patient Officer | 13 | $1.0M | 2 | 0 | $0 |
| Foster Eric Duane | Chief Commercial Officer | 11 | $200,000 | 0 | 0 | $0 |
| Kelliher Mike | Chief Business Officer | 10 | $200,000 | 0 | 0 | $0 |
| Reilly Joseph James | Senior Vice President and Chief Accounting Officer | 8 | $100,000 | 0 | 0 | $0 |
| Bishop John E | Chief Technical and Quality Officer | 6 | $100,000 | 0 | 0 | $0 |
| Brady James Parker | Chief Human Resources Officer | 5 | $100,000 | 0 | 0 | $0 |
| Mott David M | director | 0 | $0 | 0 | 1 | $1.9M |
| Hohenleitner Susan | Chief Financial Officer | 4 | $0 | 0 | 0 | $0 |
| Grammer Elizabeth A | Chief Legal and Administrative Officer | 1 | $0 | 0 | 0 | $0 |