Jefferson Gramm - Jul 29, 2022 Form 4 Insider Report for Rubicon Technology, Inc. (RBCN)

Role: Director, 10%+ Owner
Signature: /s/ Timothy Brog, Attorney in Fact
Stock symbol: RBCN
Transactions as of: Jul 29, 2022
Transactions value $: $0
Form type: 4
Date filed: 8/1/2022, 04:30 PM
Previous filing: Jan 28, 2022
Next filing: Aug 23, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RBCN	Common Stock	Award	$0	+1.01K	+22.73%	$0.00	5.45K	Jul 29, 2022	Direct
holding	RBCN	Common Stock						258K	Jul 29, 2022	See footnote	F1

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

Explanation of Responses:

Id	Content
F1	Consists of securities directly held by Bandera Master Fund L.P. ("Bandera Master Fund"). Bandera Master Fund has delegated to Bandera Partners LLC ("Bandera Partners"), its investment manager, the sole and exclusive authority to vote and dispose of the securities held by Bandera Master Fund. Mr. Gramm, solely by virtue of his position as a Managing Partner, Managing Director and Portfolio Manager of Bandera Partners, may be deemed to beneficially own the securities held by Bandera Master Fund. Mr. Gramm expressly disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

Content

Consists of securities directly held by Bandera Master Fund L.P. ("Bandera Master Fund"). Bandera Master Fund has delegated to Bandera Partners LLC ("Bandera Partners"), its investment manager, the sole and exclusive authority to vote and dispose of the securities held by Bandera Master Fund. Mr. Gramm, solely by virtue of his position as a Managing Partner, Managing Director and Portfolio Manager of Bandera Partners, may be deemed to beneficially own the securities held by Bandera Master Fund. Mr. Gramm expressly disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.