Open-market Ardelyx (ARDX) share purchase by company director

Rhea-AI Filing Summary

Ardelyx director David M. Mott reported an open-market purchase of 333,333 shares of Ardelyx common stock. The weighted average purchase price was $5.839 per share, with individual trades executed between $5.67 and $6.00 per share. Following this transaction, he reports ownership of 3,302,918 shares, which includes 87,566 shares he holds for the benefit of entities associated with New Enterprise Associates, for which he disclaims beneficial ownership except to the extent of his pecuniary interest.

Insider Trade Summary

Net Buyer: 333,333 shares ($1,946,331)

Net Buy 1 txn

Insider MOTT DAVID M

Role Director

Bought 333,333 shs ($1.95M)

Type	Security	Shares	Price	Value
Purchase	Common Stock	333,333	$5.839	$1.95M

Holdings After Transaction: Common Stock — 3,302,918 shares (Direct)

Footnotes (1)

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.67 per share to $6.00 per share, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. The Reporting Person holds 87,566 shares for the benefit of entities associated with New Enterprise Associates and disclaims beneficial ownership of such shares, except to the extent of his actual pecuniary interest therein.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MOTT DAVID M

(Last) (First) (Middle)

C/O ARDELYX, INC.

400 FIFTH AVENUE, SUITE 210

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ARDELYX, INC. [ ARDX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/20/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/20/2026		P		333,333	A	$5.839(1)	3,302,918(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.67 per share to $6.00 per share, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

2. The Reporting Person holds 87,566 shares for the benefit of entities associated with New Enterprise Associates and disclaims beneficial ownership of such shares, except to the extent of his actual pecuniary interest therein.

	/s/ Elizabeth Grammer, Attorney-in-Fact for David Mott	02/23/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Ardelyx (ARDX) director David M. Mott report?

Director David M. Mott reported buying 333,333 Ardelyx common shares in an open-market transaction. This purchase reflects a sizable increase in his reported holdings and was executed across multiple trades within a disclosed price range.

At what prices did David M. Mott buy Ardelyx (ARDX) shares?

The reported weighted average purchase price was $5.839 per Ardelyx share. Individual trades occurred at prices ranging from $5.67 to $6.00 per share, according to the disclosed transaction footnote.

How many Ardelyx (ARDX) shares does David M. Mott own after this transaction?

After the reported purchase, David M. Mott is shown as owning 3,302,918 Ardelyx common shares. This total includes 87,566 shares he holds for the benefit of New Enterprise Associates-related entities, with beneficial ownership partially disclaimed.

What does the weighted average price disclosure mean in the Ardelyx (ARDX) Form 4?

The Form 4 states the $5.839 price is a weighted average across multiple trades. Shares were bought in separate transactions between $5.67 and $6.00, and detailed trade-by-trade pricing is available to interested parties on request.

How are New Enterprise Associates-related holdings treated in David M. Mott’s Ardelyx (ARDX) ownership?

The filing notes Mott holds 87,566 Ardelyx shares for entities associated with New Enterprise Associates. He disclaims beneficial ownership of those shares, except for his actual pecuniary interest in them, as described in the footnote.