Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 13 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.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Jan. 2, 2009 PLUG A 732 · · 33,567 Direct +2.23% Acquired (price as of 2026-10-05)
Oct. 2, 2008 PLUG A 9,615 · · 32,835 Direct +41.41% Acquired (price as of 2026-10-05)
July 2, 2008 PLUG A 4,149 · · 23,220 Direct +21.76% Acquired (price as of 2026-10-05)
May 21, 2008 PLUG A 10,000 · · 45,000 Direct +28.57% Acquired (price as of 2026-10-05)
April 3, 2008 PLUG A 3,106 · · 19,071 Direct +19.46% Acquired (price as of 2026-10-05)
Jan. 3, 2008 PLUG A 2,475 · · 15,965 Direct +18.35% Acquired (price as of 2026-10-05)
Oct. 4, 2007 PLUG A 3,247 · · 13,490 Direct +31.70% Acquired (price as of 2026-10-05)
July 2, 2007 PLUG A 3,145 · · 10,243 Direct +44.31% Acquired (price as of 2026-10-05)
May 17, 2007 PLUG A 10,000 · · 35,000 Direct +40.00% Acquired (price as of 2026-10-05)
April 3, 2007 PLUG A 3,165 · · 7,098 Direct +80.47% Acquired (price as of 2026-10-05)
Jan. 8, 2007 PLUG A 2,667 · · 3,933 Direct +210.66% Acquired (price as of 2026-10-05)
Oct. 2, 2006 PLUG A 1,266 · · 1,266 Direct · Acquired (price as of 2026-10-05)
June 28, 2006 PLUG A 10,000 $4.64 $46,400 25,000 Direct +66.67% Acquired -96.0% (price as of 2026-10-05)

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.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 21, 2008 PLUG Option to Purchase Common Stock Common Stock (10,000) $3.21 May 21, 2018 10,000 Acquired
May 17, 2007 PLUG Option to Purchase Common Stock Common Stock (10,000) $2.98 May 17, 2017 10,000 Acquired
June 28, 2006 PLUG Option to Purchase Common Stock Common Stock (10,000) $4.64 June 28, 2016 10,000 Acquired

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

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
Dec. 23, 2005 PLUG Option to Purchase Common Stock→ Common Stock (15,000) 15,000 Direct