Ardelyx, Inc. Schedule 13G/A discloses passive institutional holdings by Millennium-related entities and Integrated Core Strategies. Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander each report 18,043,970 shares (7.4%) and Integrated Core Strategies (US) LLC reports 17,721,732 shares (7.2%). The filing is a joint filing documented by a April 24, 2026 Joint Filing Agreement.
The Schedule 13G/A lists shared voting and dispositive power for multiple Millennium-related entities: 18,043,970 shares (7.4%) and 17,721,732 shares (7.2%), indicating sizable passive positions.
These are joint-filed under a April 24, 2026 agreement; future filings could show changes in ownership if disposition or voting arrangements change.
Filing clarifies who holds shared control and the filing vehicle.
The disclosure attributes shared voting and dispositive power across entities controlled by Millennium Management LLC and related managers, explaining the governance structure behind the reported percentages.
Watch for amendments or Schedule 13D if positions become active or cross any regulatory thresholds.
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Joint Filing Agreementlegal
"Joint Filing Agreement, dated as of April 24, 2026"
Shared Dispositive Powerfinancial
"Shared Dispositive Power 17,721,732.00"
Shared Voting Powerfinancial
"Shared Voting Power 18,043,970.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Ardelyx, Inc.
(Name of Issuer)
Common Stock, par value $0.0001 per share
(Title of Class of Securities)
039697107
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
039697107
1
Names of Reporting Persons
Integrated Core Strategies (US) LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
17,721,732.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
17,721,732.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
17,721,732.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.2 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
039697107
1
Names of Reporting Persons
Millennium Management LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
18,043,970.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
18,043,970.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
18,043,970.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
039697107
1
Names of Reporting Persons
Millennium Group Management LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
18,043,970.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
18,043,970.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
18,043,970.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.4 %
12
Type of Reporting Person (See Instructions)
OO
SCHEDULE 13G
CUSIP Number(s):
039697107
1
Names of Reporting Persons
Israel A. Englander
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
18,043,970.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
18,043,970.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
18,043,970.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.4 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Ardelyx, Inc.
(b)
Address of issuer's principal executive offices:
400 Fifth Avenue, Suite 210, Waltham, Massachusetts 02451
Item 2.
(a)
Name of person filing:
Integrated Core Strategies (US) LLC
Millennium Management LLC
Millennium Group Management LLC
Israel A. Englander
(b)
Address or principal business office or, if none, residence:
Integrated Core Strategies (US) LLC
c/o Millennium Management LLC
399 Park Avenue
New York, New York 10022
Millennium Management LLC
399 Park Avenue
New York, New York 10022
Millennium Group Management LLC
399 Park Avenue
New York, New York 10022
Israel A. Englander
c/o Millennium Management LLC
399 Park Avenue
New York, New York 10022
(c)
Citizenship:
Integrated Core Strategies (US) LLC - Delaware
Millennium Management LLC - Delaware
Millennium Group Management LLC - Delaware
Israel A. Englander - United States
(d)
Title of class of securities:
Common Stock, par value $0.0001 per share
(e)
CUSIP No.:
039697107
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
See response to Item 9 on each cover page.
(b)
Percent of class:
See response to Item 11 on each cover page.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
See response to Item 5 on each cover page.
(ii) Shared power to vote or to direct the vote:
See response to Item 6 on each cover page.
(iii) Sole power to dispose or to direct the disposition of:
See response to Item 7 on each cover page.
(iv) Shared power to dispose or to direct the disposition of:
See response to Item 8 on each cover page.
The securities disclosed herein as potentially beneficially owned by Millennium Management LLC, Millennium Group Management LLC and Mr. Englander are held by entities subject to voting control and investment discretion by Millennium Management LLC and/or other investment managers that may be controlled by Millennium Group Management LLC (the managing member of Millennium Management LLC) and Mr. Englander (the sole voting trustee of the managing member of Millennium Group Management LLC). The foregoing should not be construed in and of itself as an admission by Millennium Management LLC, Millennium Group Management LLC or Mr. Englander as to beneficial ownership of the securities held by such entities.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group. If a group has filed this schedule pursuant to §240.13d-1(c) or §240.13d-1(d), attach an exhibit stating the identity of each member of the group.
See Exhibit I
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Integrated Core Strategies (US) LLC
Signature:
/s/ Gil Raviv
Name/Title:
Gil Raviv, Global General Counsel
Date:
04/24/2026
Millennium Management LLC
Signature:
/s/ Gil Raviv
Name/Title:
Gil Raviv, Global General Counsel
Date:
04/24/2026
Millennium Group Management LLC
Signature:
/s/ Gil Raviv
Name/Title:
Gil Raviv, Global General Counsel
Date:
04/24/2026
Israel A. Englander
Signature:
/s/ Israel A. Englander
Name/Title:
Israel A. Englander
Date:
04/24/2026
Comments accompanying signature: ** INTEGRATED CORE STRATEGIES (US) LLC
By: Integrated Holding Group LP, its Managing Member
By: Millennium Management LLC, its General Partner
Exhibit Information
Exhibit I: Joint Filing Agreement, dated as of April 24, 2026, by and among Integrated Core Strategies (US) LLC, Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander.
What stake does Millennium Management report in Ardelyx (ARDX)?
Millennium Management LLC reports 18,043,970 shares, representing 7.4% of Ardelyx common stock. The filing attributes shared voting and dispositive power to Millennium-related entities under a joint filing dated April 24, 2026.
What does Integrated Core Strategies disclose in the ARDX 13G/A?
Integrated Core Strategies (US) LLC reports 17,721,732 shares, equal to 7.2% of the class. The schedule shows the position as shared voting and shared dispositive power held with Millennium-related managers.
Who signed the joint filing for the Ardelyx 13G/A?
The joint filing agreement is signed by Integrated Core Strategies (US) LLC, Millennium Management LLC, Millennium Group Management LLC and Israel A. Englander. Signatures are dated April 24, 2026.
Does this Schedule 13G/A indicate active control or activist intent?
No; the filing is a Schedule 13G/A disclosure of passive holdings and joint filing status. It lists shared voting and dispositive power but does not assert an intent to influence management or a change to active control.
