ARDELYX, INC. 10-Q

ITEM 5. OTHER INFORMATION Trading Plans During the three months ended June 30, 2024, our Section 16 officers and directors adopted or terminated contracts, instructions or written plans for the purchase or sale of our securities as noted below: Name and Title of Director or Officer Action Date Trading Arrangement Total Shares Available to be Sold Expiration Date Rule 10b5-1* Non-Rule 10b5-1** David Rosenbaum , Chief Development Officer Adoption May 17, 2024 X 179,564 January 31, 2025 Justin Renz , Chief Financial and Operations Officer Adoption May 22, 2024 X 127,041 December 30, 2024 Robert Blanks , Chief Regulatory Officer Adoption June 4, 2024 X 339,501 January 13, 2025 *Intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) **Not intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) 70 Table of Contents ITEM 6. Exhibits Incorporated by Reference Exhibit Number Exhibit Description Form Date Number Filed Herewith 3.1 Amended and Restated Certificate of Incorporation. 8-K 6/24/2014 3.1 3.2 Certificate of Amendment to Amended and Restated Certificate of Incorporation. 8-K 6/20/2023 3.1 3.3 Amended and Restated Bylaws. 8-K 6/24/2014 3.2 10.1# Ardelyx, Inc. Amended and Restated 2014 Equity Incentive Award Plan. X 10.2# Ardelyx, Inc. Amended and Restated 2014 Employee Stock Purchase Plan. X 31.1 Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. X 31.2 Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. X 32.1 Certification of Chief Executive Officer and Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. X 101 The following financial statements, formatted in Inline Extensible Business Reporting Language (XBRL): (i) Condensed Balance Sheets as of June 30, 2024 and December 31, 2023, (ii) Condensed Statements of Operations and Comprehensive Loss for the three and six months ended June 30, 2024 and 2023, (iii) Condensed Statements of Changes in Stockholders Equity for the three and six months ended June 30, 2024 and 2023, (iv) Condensed Statements of Cash Flows for the six months ended June 30, 2024 and 2023, and (v) Notes to Unaudited Condensed Financial Statements. X 104 Cover Page Interactive Data File, formatted in Inline XBRL and contained in Exhibit 101. X # Indicates management contract or compensatory plan. *The certification attached as Exhibit 32.1 that accompanies this Quarterly Report on Form 10-Q, is deemed furnished and not filed with the Securities and Exchange Commission is not to be incorporated by reference into any filing of Ardelyx, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Quarterly Report on Form 10-Q, irrespective of any general incorporation language contained in such filing. 71 Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Ardelyx, Inc. Date: August 1, 2024 By: /s/ Robert Felsch Robert Felsch Senior Vice President and Chief Accounting Officer (Principal Accounting Officer) 72