RBCN

Rubicon Technology, Inc.

Company with tickers: RBCN

CIK

1410172

Shares Outstanding

2,410,265

Website

https://www.rubicontechnology.com

Investor Relations

https://www.rubicontechnology.com/investor-relations

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Date	Insider	Role	Type	Shares	Price	Value	After
2023-02-22	Brog Timothy	Director	Sell	52,624	$1.51	$79,462	4,969
2022-08-19	Brog Timothy	Director	Sell	58,315	$20.00	$1,166,300	57,593
2022-08-19	Gramm Jefferson	Director, 10% Owner	Sell	3,059	$20.00	$61,180	3,021
2022-08-19	Gramm Jefferson	Director, 10% Owner	Sell	129,933	$20.00	$2,598,660	128,323
2022-08-19	Westphal Susan	Director	Sell	4,472	$20.00	$89,440	4,416
2022-08-19	MIKOLAJCZYK MICHAEL E	Director	Sell	31,851	$20.00	$637,020	31,456
2022-07-29	Gramm Jefferson	Director, 10% Owner	Award	1,010	—	—	5,454
2022-07-29	Westphal Susan	Director	Award	1,010	—	—	8,888
2022-07-29	MIKOLAJCZYK MICHAEL E	Director	Award	1,010	—	—	63,307
2022-07-18	Brog Timothy	Director	Tax	6,346	$16.06	$101,917	115,908
2022-07-18	Brog Timothy	Director	Convert	12,500	—	—	122,254
2022-07-13	Brog Timothy	Director	Tax	6,346	$15.84	$100,521	109,754
2022-07-13	Brog Timothy	Director	Convert	12,500	—	—	116,100
2021-12-28	Brog Timothy	Director	Award	25,000	—	—	25,000
2021-06-24	Westphal Susan	Director	Award	1,010	$9.90	$9,999	1,010
2021-06-24	MIKOLAJCZYK MICHAEL E	Director	Award	1,010	$9.90	$9,999	1,010
2021-06-24	Gramm Jefferson	Director, 10% Owner	Award	1,010	$9.90	$9,999	1,010
2021-06-23	MIKOLAJCZYK MICHAEL E	Director	Award	1,250	—	—	62,297
2021-06-23	Westphal Susan	Director	Award	1,250	—	—	7,878
2021-06-23	Gramm Jefferson	Director, 10% Owner	Award	1,250	—	—	4,444
2021-04-06	Brog Timothy	Director	Tax	14,950	$10.81	$161,610	103,600
2021-04-06	Brog Timothy	Director	Award	31,550	—	—	118,550
2020-10-19	Brog Timothy	Director	Convert	17,280	—	—	92,280
2020-10-19	Brog Timothy	Director	Tax	5,280	$8.50	$44,880	87,000
2020-07-16	MIKOLAJCZYK MICHAEL E	Director	Award	1,250	$8.00	$10,000	1,250
2020-07-16	Gramm Jefferson	Director, 10% Owner	Award	1,250	$8.00	$10,000	1,250
2020-07-16	Westphal Susan	Director	Award	1,250	$8.00	$10,000	1,250
2020-07-15	Gramm Jefferson	Director, 10% Owner	Award	1,199	—	—	3,194
2020-07-15	Westphal Susan	Director	Award	1,199	—	—	6,628
2020-07-15	MIKOLAJCZYK MICHAEL E	Director	Award	1,199	—	—	61,047

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