SEC Form SC 13G/A filed by Rubicon Technology Inc. (Amendment)

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

SCHEDULE 13G

(Rule 13d-102)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED

PURSUANT TO § 240.13d-2

(Amendment No. 1)

Rubicon Technology, Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

78112T206

(CUSIP Number)

December 31, 2021

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rubicon Technology, Inc., a Delaware corporation (the "Issuer").

900 East Green Street, Bensenville, Illinois 60106

(a) This Schedule 13G is being jointly filed by Poplar Point Capital Management LLC, a Delaware limited liability company (“PPCM”), Poplar Point Capital Partners LP, a Delaware limited partnership ("PPCP"), Poplar Point Capital GP LLC, a Delaware limited liability company (“PPCGP”), and Jad Fakhry, a United States citizen (collectively with PPCM, PPCP and PPCGP, the “Reporting Persons”) with respect to shares of Common Stock of the Issuer owned by PPCP.

PPCM is the investment manager for PPCP. PPCGP is the general partner of PPCP. Mr. Fakhry is the manager of, and owns a controlling interest in, PPCM and PPCGP.

The filing of this statement shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any securities covered by the statement other than the securities actually owned by such person (if any).

(b) The principal business address for each of the Reporting Persons is c/o Poplar Point Capital Management LLC, 330 Primrose Road, Suite 400, Burlingame, CA 94010.

(c) PPCM, PPCP and PPCGP are all organized in the State of Delaware. Mr. Fakhry is a United States citizen.

(d) Title of Class of Securities: Common Stock, par value $0.001 per share.

(e) CUSIP Number: 78112T206.

If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution.

Item 2 is incorporated by reference.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following ¨.

Not applicable.

See Items 2 and 4 above.

*PPCP directly owns 131,809 shares of Common Stock of the Issuer (the "PPCP Shares") and each of the Reporting Persons may be deemed to beneficially own the PPCP Shares based on the ownership and control structure set forth in Item 2. PPCM, as the investment advisor of PPCP, may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) the PPCP Shares. PPCGP, as the general partner of PPCP, may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) the PPCP Shares. By virtue of Mr. Fakhry's position as the manager of each of PPCM and PPCGP, Mr. Fakhry may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) the PPCP Shares, and therefore Mr. Fakhry may be deemed to be the beneficial owner of the PPCP Shares. Each of PPCGP, PPCM, and Mr. Fakhry disclaims beneficial ownership of the PPCP Shares. In addition, the filing of this Schedule 13G shall not be construed as an admission that any of the reporting persons is the beneficial owner of any securities covered by this Schedule 13G for any other purposes than Section 13(d) of the Securities Exchange Act of 1934.

Not applicable.

Not applicable.

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. 

SIGNATURE

After reasonable inquiry and to the best of their knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct.

JOINT FILING AGREEMENT

The undersigned hereby agree to jointly prepare and file with regulatory authorities this Schedule 13G and any future amendments thereto reporting each of the undersigned’s ownership of securities of the Issuer named herein, and hereby affirm that such Schedule 13G is being filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has reason to believe that such information is inaccurate.