Susan Westphal

Currently holds a position at Rubicon Technology Inc

Position	Company	Period
Independent Director	Rubicon Technology Inc	March 17, 2017 -

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2022-08-22	2022-08-19	Rubicon Technology Inc (RBCN)	S Sale	84,765 -21.3% 178.43 US$2,817,975	84,765 -21.3%	178.43	US$2,817,975