PLUG POWER INC

Ticker: PLUG CUSIP: 72919P202 Class: Common Stock

ADVISORY RESEARCH INC's Holding History (CIK: 0000902584)

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

Q1 2022

Shares 11,351 Value ($000) $325 Avg Close $23.83 Range $17.51 - $29.99

Q4 2021

Shares 44,912 Value ($000) $1,268 Avg Close $34.60 Range $23.81 - $46.50

Q3 2021

Shares 15,497 Value ($000) $396 Avg Close $26.79 Range $23.16 - $34.45

Q2 2021

Shares 128,726 Value ($000) $4,401 Avg Close $29.01 Range $18.47 - $37.75

Q1 2021

Shares 75,526 Value ($000) $2,707 Avg Close $51.55 Range $30.10 - $75.49

Q4 2020

Shares 93,211 Value ($000) $3,161 Avg Close $22.64 Range $13.27 - $37.51

Q3 2020

Shares 227,154 Value ($000) $3,046 Avg Close $11.02 Range $7.07 - $14.35

Q2 2020

Shares 525,657 Value ($000) $4,316 Avg Close $4.68 Range $3.22 - $8.34

Q1 2020

Shares 382,976 Value ($000) $1,356 Avg Close $4.07 Range $2.53 - $6.05

Q4 2019

Shares 361,650 Value ($000) $1,143 Avg Close $3.04 Range $2.32 - $4.04

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2022	11,351	$325	$23.83	$17.51 - $29.99
Q4 2021	44,912	$1,268	$34.60	$23.81 - $46.50
Q3 2021	15,497	$396	$26.79	$23.16 - $34.45
Q2 2021	128,726	$4,401	$29.01	$18.47 - $37.75
Q1 2021	75,526	$2,707	$51.55	$30.10 - $75.49
Q4 2020	93,211	$3,161	$22.64	$13.27 - $37.51
Q3 2020	227,154	$3,046	$11.02	$7.07 - $14.35
Q2 2020	525,657	$4,316	$4.68	$3.22 - $8.34
Q1 2020	382,976	$1,356	$4.07	$2.53 - $6.05
Q4 2019	361,650	$1,143	$3.04	$2.32 - $4.04