Mark A Sperry

CIK 1279246 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 17, 2009 · Latest: Feb. 17, 2009

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 21 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

21 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
March 5, 2010 PLUG S 10b5-1 20,375 $0.53 $10,799 67,427 Direct -23.21% Disposed -59.3% (price as of 2026-08-19)
April 3, 2009 PLUG S 48,000 $0.92 $44,160 61,869 Direct -43.69% Disposed -76.6% (price as of 2026-08-19)
Feb. 4, 2008 PLUG S 3,150 $2.92 $9,198 64,057 Direct -4.69% Disposed -92.6% (price as of 2026-08-19)
Feb. 1, 2007 PLUG S 3,200 $3.65 $11,680 67,207 Direct -4.55% Disposed -94.1% (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.

Derivative holdings (Form 4 Table II)

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

Date Ticker Security Underlying Exercise price Expiration Shares A/D
May 20, 2009 PLUG Option to Purchase Common Stock Common Stock (2,500) $0.95 May 20, 2019 2,500 Acquired
Jan. 24, 2008 PLUG NQ Stock Options Common Stock (27,000) $2.60 Jan. 24, 2018 27,000 Acquired
Feb. 1, 2006 PLUG Stock Options Common Stock (40,000) $5.58 Feb. 1, 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 (20,000) $9.20 Feb. 10, 2014 20,000 Disposed
Nov. 14, 2001 PLUG Employee Stock Option Common Stock (27,000) $8.53 Nov. 14, 2011 27,000 Disposed
Nov. 14, 2001 PLUG Employee Stock Option Common Stock (8,027) $8.53 Nov. 14, 2011 8,027 Disposed

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

Compensation (DEF 14A)

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

PLUG

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2007 $242,673 $8,000 — — — — $11,377 $401,454
2006 $237,462 $60,750 — — — — $11,339 $443,012
2005 $226,987,226,987,218,592 $330,003,300,038,875 — — — — $99,461,113,110,930 —

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