PLUG POWER INC

Ticker: PLUG CUSIP: 72919P202 Class: Common Stock

CULLEN/FROST BANKERS, INC.'s Holding History (CIK: 0000039263)

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

Q4 2022

Shares 25 Value ($000) $0 Avg Close $15.92 Range $11.49 - $23.45

Q3 2022

Shares 12 Value ($000) $0 Avg Close $23.85 Range $14.75 - $31.56

Q1 2021

Shares 250 Value ($000) $9 Avg Close $51.55 Range $30.10 - $75.49

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2022	25	$0	$15.92	$11.49 - $23.45
Q3 2022	12	$0	$23.85	$14.75 - $31.56
Q1 2021	250	$9	$51.55	$30.10 - $75.49