PLUG POWER INC

Ticker: PLUG CUSIP: 72919P202 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

Note: Option positions (PUT/CALL) are excluded.

Q3 2025

Shares 728,110 Value ($000) $1,696 Avg Close $1.70 Range $1.34 - $3.16

Q1 2022

Shares 20,510 Value ($000) $587 Avg Close $23.83 Range $17.51 - $29.99

Q4 2021

Shares 44,675 Value ($000) $1,261 Avg Close $34.60 Range $23.81 - $46.50

Q3 2021

Shares 53,795 Value ($000) $1,374 Avg Close $26.79 Range $23.16 - $34.45

Q2 2021

Shares 11,310 Value ($000) $387 Avg Close $29.01 Range $18.47 - $37.75

Q1 2021

Shares 217,605 Value ($000) $7,799 Avg Close $51.55 Range $30.10 - $75.49

Q4 2020

Shares 348,470 Value ($000) $11,817 Avg Close $22.64 Range $13.27 - $37.51

Q3 2020

Shares 133,960 Value ($000) $1,796 Avg Close $11.02 Range $7.07 - $14.35

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	728,110	$1,696	$1.70	$1.34 - $3.16
Q1 2022	20,510	$587	$23.83	$17.51 - $29.99
Q4 2021	44,675	$1,261	$34.60	$23.81 - $46.50
Q3 2021	53,795	$1,374	$26.79	$23.16 - $34.45
Q2 2021	11,310	$387	$29.01	$18.47 - $37.75
Q1 2021	217,605	$7,799	$51.55	$30.10 - $75.49
Q4 2020	348,470	$11,817	$22.64	$13.27 - $37.51
Q3 2020	133,960	$1,796	$11.02	$7.07 - $14.35