Jefferson Gramm - Aug 19, 2022 Form 4 Insider Report for Rubicon Technology, Inc. (RBCN)

Role: Director, Other*, 10%+ Owner
Signature: /s/ Jefferson Gramm
Stock symbol: RBCN
Transactions as of: Aug 19, 2022
Transactions value $: -$2,659,840
Form type: 4
Date filed: 8/23/2022, 04:23 PM
Previous filing: Aug 1, 2022
Next filing: Feb 10, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RBCN	Common Stock, $0.001 Par Value Per Share	Sale	-$61.2K	-3.06K	-50.31%	$20.00	3.02K	Aug 19, 2022	Direct	F1
transaction	RBCN	Common Stock, $0.001 Par Value Per Share	Sale	-$2.6M	-130K	-50.31%	$20.00	128K	Aug 19, 2022	See footnote	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Jefferson Gramm is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id	Content
F1	This Form 4 is filed jointly by Bandera Partners LLC ("Bandera Partners"), Gregory Bylinsky and Jefferson Gramm (collectively, the "Reporting Persons"). Each of the Reporting Persons are members of a Section 13(d) group that no longer collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. As of August 19, 2022, Mr. Gramm no longer serves on the Issuer's board of directors.
F2	Bandera Partners is the investment manager of Bandera Master Fund L.P. ("Bandera Master Fund"), in whose name the shares are held. Messrs. Bylinsky and Gramm are the Managing Members of Bandera Partners. Bandera Master Fund has delegated to Bandera Partners the sole and exclusive authority to vote and dispose of the securities held by Bandera Master Fund. As a result, each of Bandera Partners and Messrs. Bylinsky and Gramm may be deemed to beneficially own the shares held by Bandera Master Fund.

Content

This Form 4 is filed jointly by Bandera Partners LLC ("Bandera Partners"), Gregory Bylinsky and Jefferson Gramm (collectively, the "Reporting Persons"). Each of the Reporting Persons are members of a Section 13(d) group that no longer collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein. As of August 19, 2022, Mr. Gramm no longer serves on the Issuer's board of directors.

Bandera Partners is the investment manager of Bandera Master Fund L.P. ("Bandera Master Fund"), in whose name the shares are held. Messrs. Bylinsky and Gramm are the Managing Members of Bandera Partners. Bandera Master Fund has delegated to Bandera Partners the sole and exclusive authority to vote and dispose of the securities held by Bandera Master Fund. As a result, each of Bandera Partners and Messrs. Bylinsky and Gramm may be deemed to beneficially own the shares held by Bandera Master Fund.