Key facts
- This page summarizes Michael Raab's Form 4 filing for ARDELYX, INC. (ARDX).
- 4 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 25 Aug 2026, 19:07.
Michael Raab - 21 Aug 2026 Form 4 Insider Report for ARDELYX, INC. (ARDX)
- Reporting relationship
- President & CEO, Director
- Issuer ticker
- ARDX
- Reported as of
- 21 Aug 2026
- Net transaction value
- -$225,914
- SEC form
- 4
- Accepted by SEC
- 25 Aug 2026, 19:07:17 UTC
- Prior SEC filing
- 17 Jul 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Felecia Ettenberg, Attorney-in-Fact for Michael Raab
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Michael Raab filed Form 4 for ARDELYX, INC. (ARDX) on 25 Aug 2026.
Change
- Previous filing in this sequence was filed on 17 Jul 2026.
- Current net transaction value: -$225,914.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001321402
Primary reporting owner
RAAB MICHAEL
- Relationship
- President & CEO, Director
- Address
- C/O ARDELYX, INC., 400 FIFTH AVENUE, SUITE 210, WALTHAM
- Signature
- /s/ Felecia Ettenberg, Attorney-in-Fact for Michael Raab
- Signature date
- 25 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ARDX
transaction
Common Stock
Sale
- Transaction value
- $57,888
- Shares
- -15,009
- Change %
- -0.89%
- Price
- $3.86
- Shares after
- 1,663,357
- Date
- 21 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ARDX
transaction
Common Stock
Sale
- Transaction value
- $61,618
- Shares
- -15,976
- Change %
- -0.96%
- Price
- $3.86
- Shares after
- 1,647,381
- Date
- 21 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ARDX
transaction
Common Stock
Sale
- Transaction value
- $32,440
- Shares
- -8,411
- Change %
- -0.51%
- Price
- $3.86
- Shares after
- 1,638,970
- Date
- 21 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ARDX
transaction
Common Stock
Sale
- Transaction value
- $73,968
- Shares
- -19,178
- Change %
- -1.2%
- Price
- $3.86
- Shares after
- 1,619,792
- Date
- 21 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ARDX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 24,364
- Date
- 21 Aug 2026
- Ownership
- Family Trust
- Footnotes
- F2
ARDX
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,000
- Date
- 21 Aug 2026
- Ownership
- Family Trust
- Footnotes
- F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
Pursuant to an automatic sell-to-cover imposed by the terms of the initial grant of the restricted stock units ("RSUs") awards, the shares were sold upon the vesting of the RSUs solely to cover applicable withholding taxes. The transaction was executed in multiple trades in prices ranging from $3.648 to $3.984, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote.
Footnote F2
The shares are directly held by Michael G. Raab, Trustee of the Michael G. Raab Living Trust dated July 25, 2012.
Footnote F3
The shares are owned directly by trusts for the benefit of the Reporting Person's children.