ardx-20260629

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 29, 2026

ARDELYX, INC.

(Exact name of registrant as specified in its charter)


Delaware	001-36485	26-1303944
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification Number)

400 FIFTH AVE., SUITE 210, WALTHAM, MASSACHUSETTS 02451

(Address of principal executive offices, including Zip Code)

Registrant’s telephone number, including area code: (617) 675-2739

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, par value $0.0001 per share

ARDX

The Nasdaq Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

On June 29, 2026, Ardelyx, Inc. (the “Company”) received $50.0 million of funding (the “Term F Loan”) pursuant to the loan and security agreement entered into in February 2022 by and between the Company and SLR Investment Corp., as collateral agent (the “Agent”) and the lenders listed in the agreement (collectively, the “Lenders”), as amended in August 2022, February 2023, October 2023, October 2024, June 2025 and April 2026 (collectively, the “Loan Agreement”). The Company elected to draw down the Term F Loan for general corporate purposes and to enhance flexibility to support its ongoing strategic initiatives, in line with the Company’s capital allocation strategy.

In accordance with the Loan Agreement, the Term F Loan maturity date is July 1, 2030, and bears an interest rate of the sum of 4.55% plus the greater of (a) the 1-month SOFR reference rate or (b) 3.5%. The Company is permitted to make interest-only payments on the Term F Loan until July 1, 2030.

In addition, the Loan Agreement contains customary events of default that entitle the Agent to cause the Company’s indebtedness under the Loan Agreement to become immediately due and payable, and to exercise remedies against the Company and the collateral securing Term F Loan, including the Company’s cash. Under the Loan Agreement, an event of default will occur if, among other things, the Company fails to make payments under the Loan Agreement, the Company breaches any of its covenants under the Loan Agreement, subject to specified cure periods with respect to certain breaches, certain Lenders determine that a material adverse change has occurred, the Company or its assets become subject to certain legal proceedings, such as bankruptcy proceedings, the Company is unable to pay its debts as they become due or the Company defaults on contracts with third parties which would permit the holder of indebtedness to accelerate the maturity of such indebtedness or that could have a material adverse change on the Company. Upon the occurrence and for the duration of an event of default, an additional default interest rate equal to 4.0% per annum will apply to all obligations owed under the Loan Agreement.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.


Exhibit No.						Description
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


Date: July 2, 2026	ARDELYX, INC.

	By:	/s/ Susan Hohenleitner
		Susan Hohenleitner
		Chief Financial Officer