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): May 10, 2023

APTINYX INC.

(Exact name of registrant as specified in its charter)

Delaware

001-38535

47-4626057

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

909 Davis Street, Suite 600

Evanston, IL 60201

(Address of principal executive offices, including zip code)

(847) 871-0377

(Registrant’s telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

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 $0.01 per share		APTX		The Nasdaq Capital 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 x

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. ¨

Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

On May 10, 2023, Aptinyx Inc. (the “Company”) was notified by the Listing Qualifications Department (the “Staff”) of The Nasdaq Stock Market LLC (“Nasdaq”) that, based upon the Staff’s determination that the Company is a “public shell” as that term is defined in Nasdaq Listing Rule 5101, and the Company’s non-compliance with certain board and committee composition listing requirements, the Company would be delisted at the opening of business on May 19, 2023 unless the Company timely requests a hearing before a Nasdaq Hearings Panel to address the deficiencies and present a plan to regain compliance. The Company does not plan to request a hearing, and expects that trading in the Company's stock will be suspended upon the opening of business on May 19, 2023. Thereafter, Nasdaq will file a Form 25-NSE with the SEC to formally delist the Company's stock. Nasdaq has not specified the exact date on which the Form 25-NSE will be filed.

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 hereunto duly authorized.

	Aptinyx Inc.

Date: May 11, 2023	By:	/s/ Andy Kidd
		Andy Kidd
		Chief Executive Officer

Aptinyx Inc. 8-K