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): December 12, 2022

RUBICON TECHNOLOGY, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-33834

36-4419301

(State or other jurisdiction
of incorporation)

(Commission File Number)

(I.R.S. Employer

Identification No.)

900 East Green Street Bensenville, Illinois		60106
(Address of principal executive offices)		(Zip Code)

(847) 295-7000

(Registrant’s telephone number, including area code)

N/A

(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))

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. ☐

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

Title of each class	Trading symbol	Name of each exchange on which registered
Common Stock, par value $.001 per share	RBCN	The Nasdaq Stock Market LLC
Preferred Share Purchase Right

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangement of Certain Officers.

On December 12, 2022, the Board of Directors of Rubicon Technology, Inc. (the “Company”) and Timothy Brog, the Company’s Chief Executive Officer, President, and Acting Chief Financial Officer, mutually agreed that the Company’s operational staffing requirements have changed and that a new Chief Executive Officer is needed. Mr. Brog will remain employed by the Company until the earlier of January 6, 2023, or the hiring of his replacement(s). Mr. Brog’s departure was not the result of any disagreements with the Company on any matters relating to its operations, policies or practices. It is expected that Mr. Brog will serve as a consultant to the Company following his departure in order to affect a smooth transition. The terms (including compensation and duration) of such consultancy have not been agreed to as of the date hereof and will be approved by the Board of Directors.

The Company has begun a search for a new Chief Executive Officer.

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.

	RUBICON TECHNOLOGY, INC.
Dated: December 13, 2022
	By:	/s/ Timothy E. Brog
	Name:	Timothy E. Brog
	Title:	Chief Executive Officer

Rubicon Technology, Inc. 8-K