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 16, 2023

Aridis Pharmaceuticals, Inc.

(Exact name of registrant as specified in its charter)

Delaware

001-38630

47-2641188

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I. R. S. Employer

Identification No.)

983 University Avenue, Bldg. B

Los Gatos, California 95032

(Address of principal executive offices, including ZIP code)

(408) 385-1742

(Registrant’s telephone number, including area code)

(Former name or former address, if changed since last report)

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		ARDS		Nasdaq Capital Market

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))

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. ☐

Item 4.01 Change in Registrant’s Certifying Accountant

As previously disclosed on Form 8-K filed on May 25, 2023, the Audit Committee (the “Audit Committee”) of the Board of Directors of Aridis Pharmaceuticals, Inc. (the “Company”) received a letter from Baker Tilly US, LLP (“BT”), notifying the Audit Committee that BT has decided to resign as the independent registered public accounting firm of the Company effective immediately following the filing of the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023.

On June 16, 2023, the Company appointed Grassi & Co. CPAs, P.C. (“Grassi”) as the Company’s new independent registered public accounting firm effective as of June 16, 2023.

The Audit Committee of the board of directors of the Company approved the appointment of Grassi.

During the fiscal year ended December 31, 2022 and the interim period from January 1, 2023 through March 31, 2023, neither the Company, nor anyone acting on its behalf, consulted with Grassi regarding (i) the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit opinion that may be rendered on the Company’s financial statements, and Grassi did not provide either a written report or oral advice to the Company that was an important factor considered by the Company in reaching a decision as to the accounting, auditing or financial reporting issue, or (ii) any matter that was either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) or a reportable event (as described in Item 304(a)(1)(v) of Regulation S-K).

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.

Date: June 23, 2023	ARIDIS PHARMACEUTICALS, INC.

	/s/ Vu Truong
	Vu Truong
	Chief Executive Officer

Aridis Pharmaceuticals Inc. filed SEC Form 8-K: Changes in Registrant’s Certifying Accountant