Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 14 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
Feb. 1, 2006 PLUG A 40,000 $5.58 $223,200 116,979 Direct +51.96% Acquired -96.6% (price as of 2026-10-02)
Feb. 1, 2006 PLUG A 21,000 $5.58 $117,180 35,282 Direct +147.04% Acquired -96.6% (price as of 2026-10-02)
Feb. 1, 2006 PLUG A 1,815 $5.58 $10,128 14,282 Direct +14.56% Acquired -96.6% (price as of 2026-10-02)
Sept. 21, 2005 PLUG F 6,500 $6.58 $42,770 12,467 Direct -34.27% Disposed -97.1% (price as of 2026-10-02)
Jan. 28, 2005 PLUG A 25,000 $5.39 $134,750 76,979 Direct +48.10% Acquired -96.5% (price as of 2026-10-02)
Feb. 10, 2004 PLUG A 18,500 $9.20 $170,200 51,979 Direct -26.25% Disposed -97.9% (price as of 2026-10-02)
Feb. 10, 2004 PLUG A 4,967 · · 18,967 Direct +35.48% Acquired (price as of 2026-10-02)
June 20, 2003 PLUG D 10,000 $17.94 $179,400 9,563 Direct -51.12% Disposed -98.9% (price as of 2026-10-02)
June 20, 2003 PLUG D 18,000 $83.50 $1,503,000 9,563 Direct -65.30% Disposed -99.8% (price as of 2026-10-02)
June 20, 2003 PLUG D 14,000 $11.00 $154,000 9,563 Direct -59.42% Disposed -98.3% (price as of 2026-10-02)
Nov. 14, 2001 PLUG A 23,916 $8.53 $204,003 33,479 Direct -41.67% Disposed -97.8% (price as of 2026-10-02)
Jan. 18, 1999 PLUG A 4,563 $5.00 $22,815 9,563 Direct -32.30% Disposed -96.2% (price as of 2026-10-02)
Oct. 18, 1998 PLUG A 3,000 $5.00 $15,000 5,000 Direct -37.50% Disposed -96.2% (price as of 2026-10-02)
Dec. 31, 1997 PLUG A 2,000 $1.00 $2,000 2,000 Direct -50.00% Disposed -81.0% (price as of 2026-10-02)

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
Feb. 1, 2006 PLUG Stock Options Common Stock (40,000) $5.58 Feb. 8, 2016 40,000 Acquired
Jan. 28, 2005 PLUG Employee Stock Option Common Stock (25,000) $5.39 Jan. 28, 2015 25,000 Acquired
Feb. 10, 2004 PLUG Employee Stock Option Common Stock (18,500) $9.20 Feb. 10, 2014 18,500 Disposed
June 20, 2003 PLUG Employee Stock Option [F5] Common Stock (10,000) $17.94 Jan. 11, 2011 10,000 Disposed
June 20, 2003 PLUG Employee Stock Option [F5] Common Stock (18,000) $83.50 Jan. 28, 2010 18,000 Disposed
June 20, 2003 PLUG Employee Stock Option [F5] Common Stock (14,000) $11.00 July 26, 2009 14,000 Disposed
Nov. 14, 2001 PLUG Employee Stock Option Common Stock (23,916) $8.53 Nov. 14, 2011 23,916 Disposed
Jan. 18, 1999 PLUG Employee Stock Option Common Stock (4,563) $5.00 Jan. 18, 2009 4,563 Disposed
Oct. 18, 1998 PLUG Employee Stock Option Common Stock (3,000) $5.00 Oct. 18, 2008 3,000 Disposed
Dec. 31, 1997 PLUG Employee Stock Option Common Stock (2,000) $1.00 Dec. 31, 2007 2,000 Disposed

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

Compensation (DEF 14A)

08

Matched by name from proxy statements (DEF 14A) — verify against the filing.

PLUG

CFO
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2006 $96,507 $25,000 · · · · $275,175 $668,395
2005 $169,105,154,500,147,104 $310,003,100,039,575 · · · · $859,978,747,356 ·
2004 $154,500,147,116,100,000 $310,003,957,530,000 · · · · $787,473,564,558 ·

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.