C. Keith Hartley

Currently holds a position at Universal Display Corp

Position	Company	Period
Independent Director	Universal Display Corp	Sept. 26, 2000 -
Independent Director	Idera Pharmaceuticals Inc	Jan. 1, 2000 - June 9, 2014

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

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PS: Planned sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2020-11-09	2020-11-05	Universal Display Corp (OLED)	S Sale	7,500 -8.4% 213.72 USD 1,602,900	7,500 -8.4%	213.72	USD 1,602,900
2020-11-09	2020-11-05	Universal Display Corp (OLED)	S Sale	2,500 -2.7% 212.07 USD 530,175	2,500 -2.7%	212.07	USD 530,175
2020-03-20	2020-03-18	Universal Display Corp (OLED)	S Sale	128 -0.1% 106.11 USD 13,582	128 -0.1%	106.11	USD 13,582
2019-10-04	2019-10-02	Universal Display Corp (OLED)	S Sale	185 -0.2% 159.57 USD 29,520	185 -0.2%	159.57	USD 29,520