PLUG POWER INC

Ticker: PLUG CUSIP: 72919P202 Class: Common Stock

HARBOR INVESTMENT ADVISORY, LLC's Holding History (CIK: 0001468792)

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

Q3 2021

Shares 100 Value ($000) $3 Avg Close $26.79 Range $23.16 - $34.45

Q2 2021

Shares 100 Value ($000) $3 Avg Close $29.01 Range $18.47 - $37.75

Q1 2021

Shares 311 Value ($000) $11 Avg Close $51.55 Range $30.10 - $75.49

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	100	$3	$26.79	$23.16 - $34.45
Q2 2021	100	$3	$29.01	$18.47 - $37.75
Q1 2021	311	$11	$51.55	$30.10 - $75.49