MIKOLAJCZYK MICHAEL E - 23 Jun 2021 Form 4 Insider Report for Rubicon Technology, Inc. (RBCN)

Role: Director
Signature: /s/ Timothy Brog Attorney in Fact
Issuer symbol: RBCN
Transactions as of: 23 Jun 2021
Net transactions value: +$9,999
Form type: 4
Filing time: 28 Jun 2021, 21:22:32 UTC
Next filing: 01 Aug 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RBCN	Common Stock	Award	$0	+1,250	+2%	$0.000000	62,297	23 Jun 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	RBCN	Restricted Stock Units	Award	$9,999	+1,010		$9.90	1,010	24 Jun 2021	Common Stock	1,010		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each restricted stock unit ("RSU") represents a right to receive one share of the Company's common stock.
F2	RSUs vest on the day immediately preceding the day of the 2022 Annual Meeting of Stockholders.