Larry Garberding

Insider

First SEC filing: Feb. 13, 2015 · Latest: Feb. 13, 2015

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.

Insider at

PLUG selling Dec. 5, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 60 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

60 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 3, 2017	PLUG	A	5,888	$1.38	$8,125	197,714 Direct	+3.07%	Acquired	63.0% (price as of 2026-08-20)
Jan. 3, 2017	PLUG	A	6,771	$1.20	$8,125	191,826 Direct	+3.66%	Acquired	87.5% (price as of 2026-08-20)
Oct. 3, 2016	PLUG	A	4,751	$1.71	$8,124	185,055 Direct	+2.63%	Acquired	31.6% (price as of 2026-08-20)
July 1, 2016	PLUG	A	4,368	$1.86	$8,124	180,304 Direct	+2.48%	Acquired	21.0% (price as of 2026-08-20)
May 18, 2016	PLUG	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
April 1, 2016	PLUG	A	3,963	$2.05	$8,124	175,936 Direct	+2.30%	Acquired	9.8% (price as of 2026-08-20)
Jan. 14, 2016	PLUG	A	3,869	$2.10	$8,125	171,973 Direct	+2.30%	Acquired	7.1% (price as of 2026-08-20)
Oct. 1, 2015	PLUG	A	4,322	$1.88	$8,125	168,104 Direct	+2.64%	Acquired	19.7% (price as of 2026-08-20)
July 17, 2015	PLUG	A	3,457	$2.35	$8,124	163,782 Direct	+2.16%	Acquired	-4.3% (price as of 2026-08-20)
May 21, 2015	PLUG	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
April 2, 2015	PLUG	A	3,224	$2.52	$8,124	160,325 Direct	+2.05%	Acquired	-10.7% (price as of 2026-08-20)
Jan. 2, 2015	PLUG	A	2,727	$2.98	$8,126	157,101 Direct	+1.77%	Acquired	-24.5% (price as of 2026-08-20)
July 1, 2014	PLUG	A	1,721	$4.72	$8,123	152,532 Direct	+1.14%	Acquired	-52.3% (price as of 2026-08-20)
April 1, 2014	PLUG	A	1,078	$7.54	$8,128	150,811 Direct	+0.72%	Acquired	-70.2% (price as of 2026-08-20)
Jan. 2, 2014	PLUG	A	3,487	$2.33	$8,125	149,733 Direct	+2.38%	Acquired	-3.4% (price as of 2026-08-20)
Oct. 2, 2013	PLUG	A	11,444	$0.71	$8,125	146,246 Direct	+8.49%	Acquired	216.9% (price as of 2026-08-20)
July 2, 2013	PLUG	A	22,569	$0.36	$8,125	134,802 Direct	+20.11%	Acquired	525.0% (price as of 2026-08-20)
June 28, 2013	PLUG	A	15,000	—	—	119,500 Direct	+14.35%	Acquired	(price as of 2026-08-20)
April 1, 2013	PLUG	A	47,794	$0.17	$8,125	112,233 Direct	+74.17%	Acquired	1223.5% (price as of 2026-08-20)
Jan. 2, 2013	PLUG	A	16,250	$0.50	$8,125	64,439 Direct	+33.72%	Acquired	350.0% (price as of 2026-08-20)
Oct. 3, 2012	PLUG	A	9,789	$0.83	$8,125	48,189 Direct	+25.49%	Acquired	171.1% (price as of 2026-08-20)
July 2, 2012	PLUG	A	7,127	$1.14	$8,125	38,400 Direct	+22.79%	Acquired	97.4% (price as of 2026-08-20)
May 16, 2012	PLUG	A	15,000	—	—	106,000 Direct	+16.48%	Acquired	(price as of 2026-08-20)
April 2, 2012	PLUG	A	6,398	$1.27	$8,125	31,273 Direct	+25.72%	Acquired	77.2% (price as of 2026-08-20)
Jan. 3, 2012	PLUG	A	4,063	$2.00	$8,126	24,875 Direct	+19.52%	Acquired	12.5% (price as of 2026-08-20)
Dec. 5, 2011	PLUG	S	3,000	$2.26	$6,780	20,812 Direct	-12.60%	Disposed	-0.4% (price as of 2026-08-20)
Oct. 3, 2011	PLUG	A	4,060	$1.73	$7,024	23,812 Direct	+20.55%	Acquired	30.1% (price as of 2026-08-20)
Sept. 20, 2011	PLUG	A	65,000	—	—	92,500 Direct	+236.36%	Acquired	(price as of 2026-08-20)
Aug. 2, 2011	PLUG	A	3,069	$2.24	$6,875	19,752 Direct	+18.40%	Acquired	0.4% (price as of 2026-08-20)
May 12, 2011	PLUG	A	15,000	—	—	290,000 Direct	+5.45%	Acquired	(price as of 2026-08-20)
April 4, 2011	PLUG	A	9,046	$0.76	$6,875	166,832 Direct	+5.73%	Acquired	-70.4% (price as of 2026-08-20)
Jan. 7, 2011	PLUG	A	17,628	$0.39	$6,875	157,786 Direct	+12.58%	Acquired	-42.3% (price as of 2026-08-20)
Oct. 4, 2010	PLUG	A	17,628	—	—	140,158 Direct	+14.39%	Acquired	(price as of 2026-08-20)
July 6, 2010	PLUG	A	16,369	—	—	122,530 Direct	+15.42%	Acquired	(price as of 2026-08-20)
May 19, 2010	PLUG	A	15,000	—	—	275,000 Direct	+5.77%	Acquired	(price as of 2026-08-20)
April 2, 2010	PLUG	A	10,417	—	—	106,161 Direct	+10.88%	Acquired	(price as of 2026-08-20)
Jan. 5, 2010	PLUG	A	9,821	—	—	95,744 Direct	+11.43%	Acquired	(price as of 2026-08-20)
Oct. 2, 2009	PLUG	A	7,994	—	—	85,923 Direct	+10.26%	Acquired	(price as of 2026-08-20)
July 2, 2009	PLUG	A	8,488	—	—	77,929 Direct	+12.22%	Acquired	(price as of 2026-08-20)
May 20, 2009	PLUG	A	125,000	—	—	260,000 Direct	+92.59%	Acquired	(price as of 2026-08-20)
May 20, 2009	PLUG	A	15,000	—	—	135,000 Direct	+12.50%	Acquired	(price as of 2026-08-20)
April 2, 2009	PLUG	A	7,994	—	—	69,441 Direct	+13.01%	Acquired	(price as of 2026-08-20)
Jan. 2, 2009	PLUG	A	6,010	—	—	61,447 Direct	+10.84%	Acquired	(price as of 2026-08-20)
Oct. 2, 2008	PLUG	A	6,010	—	—	55,437 Direct	+12.16%	Acquired	(price as of 2026-08-20)
July 2, 2008	PLUG	A	2,593	—	—	49,427 Direct	+5.54%	Acquired	(price as of 2026-08-20)
May 21, 2008	PLUG	A	15,000	—	—	120,000 Direct	+14.29%	Acquired	(price as of 2026-08-20)
April 3, 2008	PLUG	A	1,941	—	—	46,834 Direct	+4.32%	Acquired	(price as of 2026-08-20)
Jan. 3, 2008	PLUG	A	1,547	—	—	44,893 Direct	+3.57%	Acquired	(price as of 2026-08-20)
Oct. 4, 2007	PLUG	A	2,029	—	—	43,346 Direct	+4.91%	Acquired	(price as of 2026-08-20)
July 2, 2007	PLUG	A	1,965	—	—	41,317 Direct	+4.99%	Acquired	(price as of 2026-08-20)
May 17, 2007	PLUG	A	15,000	—	—	105,000 Direct	+16.67%	Acquired	(price as of 2026-08-20)
April 3, 2007	PLUG	A	1,978	—	—	39,352 Direct	+5.29%	Acquired	(price as of 2026-08-20)
Jan. 8, 2007	PLUG	A	1,667	—	—	37,374 Direct	+4.67%	Acquired	(price as of 2026-08-20)
Oct. 2, 2006	PLUG	A	1,582	—	—	35,707 Direct	+4.64%	Acquired	(price as of 2026-08-20)
June 28, 2006	PLUG	A	15,000	$4.64	$69,600	90,000 Direct	+20.00%	Acquired	-95.2% (price as of 2026-08-20)
June 1, 2005	PLUG	A	15,000	$6.22	$93,300	115,000 Direct	+15.00%	Acquired	-96.4% (price as of 2026-08-20)
June 1, 2005	PLUG	A	4,019	$6.22	$24,998	34,125 Direct	+13.35%	Acquired	-96.4% (price as of 2026-08-20)
May 20, 2004	PLUG	A	10,000	—	—	100,000 Direct	+11.11%	Acquired	(price as of 2026-08-20)
May 20, 2004	PLUG	A	5,000	—	—	90,000 Direct	+5.88%	Acquired	(price as of 2026-08-20)
May 20, 2004	PLUG	A	3,000	$7.50	$22,500	30,106 Direct	+11.07%	Acquired	-97.0% (price as of 2026-08-20)
Dec. 19, 2003	PLUG	A	3,106	—	—	27,106 Direct	+12.94%	Acquired	(price as of 2026-08-20)

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 18, 2016	PLUG	Option to Purchase	Common Stock (30,000)	$1.76	May 18, 2026	30,000	Acquired
May 21, 2015	PLUG	Option to Purchase	Common Stock (30,000)	$2.62	May 21, 2025	30,000	Acquired
June 28, 2013	PLUG	Option to pruchase Plug Power Common Stock	Plug Power Common Stock (15,000)	$0.38	June 28, 2013	15,000	Acquired
May 16, 2012	PLUG	Option to Purchase Plug Power Common Stock	Plug Power Common Stock (15,000)	$1.22	May 16, 2022	15,000	Acquired
Sept. 20, 2011	PLUG	Option to Purchase Plug Power Common Stock	Plug Power Common Stock (65,000)	$1.93	Sept. 20, 2021	65,000	Acquired
May 12, 2011	PLUG	Option to Purchase Plug Power Common Stock	Plug Power Common Stock (15,000)	$0.51	May 12, 2021	15,000	Acquired
May 19, 2010	PLUG	Option to Purchase Plug Power Common Stock	Plug Power Common Stock (15,000)	$0.48	May 19, 2020	15,000	Acquired
May 20, 2009	PLUG	Option to Purchase Common Stock	Common Stock (125,000)	$0.95	May 20, 2019	125,000	Acquired
May 20, 2009	PLUG	Option to Purchase Common Stock	Common Stock (15,000)	$0.95	May 20, 2019	15,000	Acquired
May 21, 2008	PLUG	Option to Purchase Common Stock	Common Stock (15,000)	$3.21	May 21, 2018	15,000	Acquired
May 17, 2007	PLUG	Option to Purchase Common Stock	Common Stock (15,000)	$2.98	May 17, 2017	15,000	Acquired
June 28, 2006	PLUG	Option to Purchase Common Stock	Common stock (15,000)	$4.64	June 28, 2016	15,000	Acquired
June 1, 2005	PLUG	Option to Purchase Common Stock	Common Stock (15,000)	$6.22	June 1, 2015	15,000	Acquired
May 20, 2004	PLUG	Option to Purchase Common Stock	Common Stock (10,000)	$7.50	May 20, 2014	10,000	Acquired
May 20, 2004	PLUG	Option to Purchase Common Stock	Common Stock (5,000)	$7.50	May 20, 2014	5,000	Acquired

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