Michael E Mcguire Jr

Insider

First SEC filing: May 19, 2008 · Latest: May 19, 2008

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 6 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 2, 2009	PLUG	A	1,163	—	—	11,816 Direct	+10.92%	Acquired	(price as of 2026-08-19)
Jan. 2, 2009	PLUG	A	4,808	—	—	10,653 Direct	+82.26%	Acquired	(price as of 2026-08-19)
Oct. 2, 2008	PLUG	A	4,808	—	—	5,845 Direct	+463.65%	Acquired	(price as of 2026-08-19)
July 2, 2008	PLUG	A	1,037	—	—	1,037 Direct	—	Acquired	(price as of 2026-08-19)
May 21, 2008	PLUG	A	10,000	—	—	25,000 Direct	+66.67%	Acquired	(price as of 2026-08-19)
May 16, 2008	PLUG	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-19)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
May 21, 2008	PLUG	Option to Purchase Common Stock	Common Stock (10,000)	$3.21	May 21, 2018	10,000	Acquired
May 16, 2008	PLUG	Stock Options	Common Stock (15,000)	$3.16	May 16, 2018	15,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
May 19, 2008	PLUG	No Securities are Beneficially Owned	0	Direct