Maureen Helmer

Currently holds a position at Plug Power Inc

Position	Company	Period
Independent Director	Plug Power Inc	Feb. 12, 2004 -

• 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
2026-06-10	2026-06-08	Plug Power Inc (PLUG)	PlS Planned sale	98,595 +20.2% 37.84 US$2,723,389	98,595 +20.2%	37.84	US$2,723,389
2026-06-08	2026-06-08	Plug Power Inc (PLUG)	PrS Proposed sale	68,909 69.39 US$1,130,096	68,909	69.39	US$1,130,096
2020-12-21	2020-12-17	Plug Power Inc (PLUG)	PlS Planned sale	99,845 +0.2% 410.35 US$969,068	99,845 +0.2%	410.35	US$969,068
2020-12-16	2020-12-14	Plug Power Inc (PLUG)	PlS Planned sale	300 -0.2% 27.14 US$8,141	300 -0.2%	27.14	US$8,141
2020-12-16	2020-12-14	Plug Power Inc (PLUG)	PlS Planned sale	15,011 -10.8% 26.11 US$391,970	15,011 -10.8%	26.11	US$391,970
2020-10-07	2020-10-05	Plug Power Inc (PLUG)	PlS Planned sale	35,000 -20.1% 15.00 US$525,000	35,000 -20.1%	15.00	US$525,000
2020-09-22	2020-09-18	Plug Power Inc (PLUG)	PlS Planned sale	75,000 -30.2% 13.28 US$996,232	75,000 -30.2%	13.28	US$996,232
2020-06-25	2020-06-23	Plug Power Inc (PLUG)	PlS Planned sale	150,164 -37.8% 6.29 US$944,547	150,164 -37.8%	6.29	US$944,547
2020-04-20	2020-04-16	Plug Power Inc (PLUG)	PlS Planned sale	115,000 -32.9% 4.29 US$492,902	115,000 -32.9%	4.29	US$492,902