UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 19, 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

EXPLANATORY NOTE

This current report on Form 8-K/A (the “Amendment”) amends the current report on Form 8-K filed on September 19, 2022, by Rubicon Technology, Inc. (the “Company”), with the U.S. Securities and Exchange Commission (the “Original Form 8-K”). The Original Form 8-K had typographical errors relating to the gross and net proceeds from the sale of the Property (as defined below). The sole purpose of this Amendment is to correct such typographical errors. No other changes have been made to the Original Form 8-K.

Item 2.01 Completion of Acquisition or Disposition of Assets

On September 19, 2022, Rubicon Technology, Inc. (the “Company”) completed the previously announced sale of its real property commonly known as Fox Valley Business Park, Lot 101, Batavia, Illinois 60510, (the “Property”) to Capitol Trucking Inc., a Texas corporation (“Purchaser”) pursuant to the terms and conditions of the Agreement of Sale (the “Agreement”), dated as of February 7, 2022.

The selling price for the Property was Seven Hundred Twenty-Two Thousand dollars ($722,000). The Company realized net proceeds of approximately Six Hundred Thousand dollars ($600,000) after the payment of real estate taxes, brokerage and legal fees, transfer taxes and other expenses.

The Agreement is incorporated herein by reference. It was Exhibit 10.1 to the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 9, 2022.

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: September 20, 2022	By:	/s/ Timothy E. Brog
	Name:	Timothy E. Brog
	Title:	Chief Executive Officer

Rubicon Technology, Inc. 8-K/A