BALLARD PWR SYS INC NEW

Ticker: BLDP CUSIP: 058586108 Class: COM

Mattern Wealth Management LLC's Holding History (CIK: 0001802376)

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

Q3 2021

Shares 14,300 Value ($000) $201 Avg Close $15.84 Range $13.73 - $18.86

Q2 2021

Shares 14,300 Value ($000) $217 Avg Close $18.59 Range $12.80 - $25.59

Q1 2021

Shares 10,400 Value ($000) $253 Avg Close $29.89 Range $20.25 - $42.28

Q4 2020

Shares 10,300 Value ($000) $241 Avg Close $18.42 Range $14.41 - $24.60

Q4 2019

Shares 17,800 Value ($000) $128 Avg Close $6.10 Range $4.57 - $7.30

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	14,300	$201	$15.84	$13.73 - $18.86
Q2 2021	14,300	$217	$18.59	$12.80 - $25.59
Q1 2021	10,400	$253	$29.89	$20.25 - $42.28
Q4 2020	10,300	$241	$18.42	$14.41 - $24.60
Q4 2019	17,800	$128	$6.10	$4.57 - $7.30