PLUG insider ownership: who sold, why, and what they still hold

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Benjamin Haycraft CSO & Gm EMEA	200,000	$2.14	66%	101K	Sep 18, 2026	Sep 22, 2026

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Benjamin Haycraft CSO & Gm EMEA	18,750	$2.06	5.9%	301K	Sep 15, 2026	Sep 15, 2026

Who	Shares	Price	% of total stake	Total stake after	Trade date	Filed
Benjamin Haycraft CSO & Gm EMEA	13,810	$2.14	4.1%	320K	Sep 11, 2026	Sep 15, 2026

What stands out

Jose Crespo bought 37K shares for $87K, first on Dec 15, 2025.Purchase, Dec 15, 2025

Maureen Helmer sold 50K shares (14% of starting holdings), but 54K more vested, so the stake grew (from 358K to 361K).Largest sale, Jun 8, 2026

Percentages cover 12 of 15 officers and directors. Left out: George McNamee (most holdings were last confirmed in 2020); Jose Crespo (holdings couldn't be fully reconciled); Dean Fullerton (held no vested shares at the start). Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Each bar is the insider's vested stake at the start of the period (Oct 8, 2025). The gold part is what they sold.

SoldRest of starting stakeAdded during the period

Benjamin Haycraft

CSO & Gm EMEA

70% · $738KDisclosed plan

Maureen Helmer

Director

14% · $162KDisclosed plan

Amounts, filings and trading plans for each seller

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planTo cover taxesNo plan disclosed

Common questions

Why are Plug Power Inc insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 100% of sales by value ran under 10b5-1 trading plans disclosed in the filings. A trading plan schedules sales in advance.

Are any Plug Power Inc insiders buying?

Yes. 1 officer or director reported 1 purchase in the past 12 months (Form 4 code P, which includes private purchases).

How much of their stake did Plug Power Inc insiders sell?

About 5.6% overall. As a group they ended with more shares than they started with. The biggest individual seller, Benjamin Haycraft, gave up 70% of starting holdings. That covers the 12 months to Oct 8, 2026 and counts vested shares reported on SEC Forms 3, 4 and 5, which is not an insider's whole wealth.

The evidence

Who sold2 officers and directors: amount, % of holdings, trading plan

Who sold	Amount	% of holdings	Trading plan
Benjamin Haycraft CSO & Gm EMEA	$738K 333K shares	70%	Disclosed plan
Maureen Helmer Director	$162K 50K shares	14%	Disclosed plan

The full ownership picture14 of 15 insiders fully reconciled · 14 officers and directors

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

Insider

Held Oct 8, 2025

Sold

Held Oct 8, 2026

Still held

Paul Middleton

Minor difference of 8,445 shares. Difference is under 0.5% of holdings. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

CFO & Executive VP

2.61M

3.01M

no sales

Vesting, gifts, unvested awards and holding lines for Paul Middleton

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	2,558,064	2,947,169
401(k) Plan	Common Stock	56,047	64,492

Additional holdings last reported Aug 28, 2020, not confirmed since: 147,056 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 147,056 shares, last reported Aug 28, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
750,000	$2.41	Apr 26, 2031	$0
510,204	$2.57	Jun 25, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Reconciliation: minor difference of 8,445 shares. Difference is under 0.5% of holdings.

George McNamee

Most of this insider's holdings were last confirmed in 2020. Confirmed in the last three years: 1,173,282 shares. Not confirmed since: 1,553,219 shares, left out of this row. "Still held" is not shown because it would cover only the smaller, confirmed part.

Director

1.12M

1.17M

see note

Vesting, gifts, unvested awards and holding lines for George McNamee

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	820,521	873,282
McNamee Family Irrevocable Trust of 2020	Common Stock	300,000	300,000

Additional holdings last reported Dec 31, 2020, not confirmed since: 1,553,219 shares. Not included in any total or percentage on this page.

Trust, COMMON STOCK: 365,000 shares, last reported Jun 13, 2014
Unresolved (see footnote), Common Stock: 300,000 shares, last reported Dec 31, 2020
Direct, Plug Power Common Stock: 888,219 shares, last reported Aug 6, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Andrew Marsh

Minor difference of -74,442 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Unexplained small increases, consistent with stock unit vesting or reinvested dividends. Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

1.02M

975K

no sales

Vesting, gifts, unvested awards and holding lines for Andrew Marsh

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Unexplained small increases, consistent with stock unit vesting or reinvested dividends.
Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	908,928	853,378
401(k) Plan	Common Stock	115,464	121,878

Additional holdings last reported Aug 31, 2020, not confirmed since: 198,680 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 198,680 shares, last reported Aug 31, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
1,500,000	$2.41	Apr 26, 2031	$0
2,250,000	$1.44	Sep 4, 2035	$1.6M
163,638	$1.81	Mar 2, 2036	$54K
87,260	$2.26	Mar 31, 2036	$0
72,469	$2.71	Jun 30, 2036	$0
101,699	$1.94	Sep 30, 2036	$20K

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Reconciliation: minor difference of -74,442 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Gary Willis

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

674K

730K

no sales

Vesting, gifts, unvested awards and holding lines for Gary Willis

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	673,857	730,107

Additional holdings last reported Jul 1, 2020, not confirmed since: 410,281 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 410,281 shares, last reported Jul 1, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Benjamin Haycraft

CSO & Gm EMEA

478K

−333K

101K

21%

Vesting, gifts, unvested awards and holding lines for Benjamin Haycraft

0shares vested or exercised

0gifted (net of own trusts)

−44Kwithheld by the company for taxes

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	477,583	101,249

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
25,000	$26.92	Sep 22, 2031	$0
1,000,000	$1.44	Sep 4, 2035	$702K
357,143	$2.57	Jun 25, 2036	$0
362,694	$2.83	Jun 25, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Gregory Kenausis

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

452K

520K

no sales

Vesting, gifts, unvested awards and holding lines for Gregory Kenausis

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	451,973	520,340

Additional holdings last reported Jul 1, 2020, not confirmed since: 203,610 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 203,610 shares, last reported Jul 1, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
10,000	$2.62	May 21, 2025	$0
15,000	$2.13	Jun 28, 2027	$173
15,000	$2.11	May 16, 2028	$473
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Maureen Helmer

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Director

358K

−50K

361K

+1%

Vesting, gifts, unvested awards and holding lines for Maureen Helmer

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	357,606	361,318

Additional holdings last reported Jul 1, 2020, not confirmed since: 248,263 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 248,103 shares, last reported Jul 1, 2020
Children, Plug Power Common Stock: 160 shares, last reported May 16, 2007

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Gerard Conway Jr.

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Gen. Coun, Corp Sec., Exec. VP

342K

no sales

Vesting, gifts, unvested awards and holding lines for Gerard Conway Jr.

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	259,482	259,482
401(k) Plan	Common Stock	82,638	82,638

Additional holdings last reported Aug 28, 2020, not confirmed since: 47,929 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 45,871 shares, last reported Aug 28, 2020
Direct, Plug Power Inc. Common Stock: 2,058 shares, last reported Feb 1, 2006

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
750,000	$2.41	Apr 26, 2031	$0
1,000,000	$1.44	Sep 4, 2035	$702K
357,143	$2.57	Jun 25, 2036	$0
362,694	$2.83	Jun 25, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Jose Crespo

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +10,513 shares on Dec 15, 2025 (401(k) Plan). See the filing Sales and other transactions for Jose Crespo are complete.

President & Chief Revenue Officer

n/a

Vesting, gifts, unvested awards and holding lines for Jose Crespo

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Holdings couldn't be fully reconciled. Balance changed without a matching transaction, and the footnote does not state the amount: +10,513 shares on Dec 15, 2025 (401(k) Plan). The balances below are as reported, not verified totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	270,032	307,332
401(k) Plan	Common Stock	50,787	61,300

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
750,000	$2.41	Apr 26, 2031	$0
1,000,000	$1.44	Sep 4, 2035	$702K
765,306	$2.57	Jun 25, 2036	$0
777,202	$2.83	Jun 25, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Martin Hull

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Corporate Controller and CAO

226K

no sales

Vesting, gifts, unvested awards and holding lines for Martin Hull

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Additional holdings last reported more than 3 years ago are shown separately and excluded from totals.

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	179,873	179,873
401(k) Plan	Common Stock	46,090	46,090

Additional holdings last reported Aug 31, 2020, not confirmed since: 25,231 shares. Not included in any total or percentage on this page.

Direct, Plug Power Common Stock: 25,231 shares, last reported Aug 31, 2020

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
60,000	$3.48	Nov 22, 2033	$0
200,000	$2.41	Apr 26, 2034	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Kavita Mahtani

Director

218K

240K

no sales

Vesting, gifts, unvested awards and holding lines for Kavita Mahtani

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	218,470	239,847

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Mark Bonney

Director

200K

284K

no sales

Vesting, gifts, unvested awards and holding lines for Mark Bonney

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	200,448	283,772

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Patrick Joggerst

Director

187K

265K

no sales

Vesting, gifts, unvested awards and holding lines for Patrick Joggerst

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	186,785	264,782

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
37,375	$3.01	Jun 5, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

Colin Angle

Director

101K

159K

no sales

Vesting, gifts, unvested awards and holding lines for Colin Angle

0shares vested or exercised

0gifted (net of own trusts)

none reportedunvested awards, start → end

Held through	Share class	Oct 8, 2025	Oct 8, 2026
Direct	Common Stock	100,843	159,223

Stock options (not counted as shares):

Options held	Strike price	Expires	Intrinsic value (estimate)
101,810	$2.21	Aug 16, 2034	$0
76,531	$1.47	Jul 3, 2035	$51K
39,753	$2.83	Jun 11, 2036	$0

Estimate: options held × ($2.14 − strike price), using the most recent insider trade price on Form 4 (Sep 18, 2026), not a market close.

14 of 15 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (12 exactly, 2 with a minor or footnoted difference). For 1 we show sales but not holdings; the ! icon on that row explains why. Percentages cover 12 of 15 officers and directors. Left out: George McNamee (most holdings were last confirmed in 2020); Jose Crespo (holdings couldn't be fully reconciled); Dean Fullerton (held no vested shares at the start). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

What explains the selling$900K of sales by plan status, purpose, seller and month

Officer and director open-market sales: $900K across 382,560 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Disclosed plan · $900K · 100%

Taxes

43,774 shares ($117K) were withheld by the company for taxes, which isn't a market sale.

Purchases · 1 buyer (1 trade)

1 officer or director bought shares in this period, in 1 trade(Form 4 code P). Across all their filings on record there are 22 purchase trades.

Seller	Shares sold	Proceeds	Under a disclosed plan	Share of total	Sales dates
Benjamin Haycraft CSO & Gm EMEA	333K	$738K	100%	82%	Oct 10, 2025 to Sep 18, 2026
Maureen Helmer Director	50K	$162K	100%	18%	Jun 8, 2026 to Jun 8, 2026

Sales by month

Month	Sale proceeds	Disclosed plan	To cover taxes	No plan disclosed
Oct 2025	$38K	$38K	$0	$0
Nov 2025	$29K	$29K	$0	$0
Dec 2025	$88K	$88K	$0	$0
Jan 2026	$87K	$87K	$0	$0
Feb 2026	$0	$0	$0	$0
Mar 2026	$0	$0	$0	$0
Apr 2026	$0	$0	$0	$0
May 2026	$0	$0	$0	$0
Jun 2026	$162K	$162K	$0	$0
Jul 2026	$0	$0	$0	$0
Aug 2026	$0	$0	$0	$0
Sep 2026	$496K	$496K	$0	$0
Oct 2026	$0	$0	$0	$0

Is this normal? Selling year by year5 earlier years to compare with

Less than usual: about half of the 5-year average. 2 insiders sold; the average is 3 a year.

12 months ending	Shares sold	Insiders who sold	Proceeds
Oct 8, 2026 Latest 12 months	383K	2	$900K
Oct 8, 2025 1 year earlier	58K	3	$88K
Oct 8, 2024 2 years earlier	20K	1	$49K
Oct 9, 2023 3 years earlier	32K	1	$230K
Oct 9, 2022 4 years earlier	0	0	$0
Oct 9, 2021 5 years earlier	4.62M	12	$137M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty1 insider whose holdings couldn't be fully reconciled

Jose Crespo: holdings couldn't be fully reconciled (difference of 10,513 shares). Balance changed without a matching transaction, and the footnote does not state the amount: +10,513 shares on Dec 15, 2025 (401(k) Plan). Filing, Dec 15, 2025

Footnote: "The Reporting Person holds 61,300 shares of common stock in Plug Power Inc.'s 401(k) plan. The information in this report is based on a plan statement as of December 17, 2025."

Paul Middleton: minor difference of 8,445 shares. Difference is under 0.5% of holdings.

Andrew Marsh: minor difference of -74,442 shares. Unexplained small increases, consistent with stock unit vesting or reinvested dividends.

Inferred rename: "Limited Partnership" is treated as the same holder as "Limited Partnerships", because the old name was never reported again and the new one opened with the same balance (8,511,620 shares). Old name, new name

Inferred rename: "On April 16, 2020, Five More Special Situations Fund Ltd" is treated as the same holder as "On April 22, 2020, Five More Special Situations Fund Ltd", because the old name was never reported again and the new one opened with the same balance (951,479 shares). Old name, new name

Inferred rename: "On April 22, 2020, Five More Special Situations Fund Ltd" is treated as the same holder as "Five More Fund", because the old name was never reported again and the new one opened with the same balance (552,529 shares). Old name, new name

Inferred rename: "FiveT Capital Holding" is treated as the same holder as "On July 20, 2020, FiveT Capital Holding AG", because the old name was never reported again and the new one opened with the same balance (1,750 shares). Old name, new name

Inferred typo: the share class "CommonStock" is treated as the same class as "Common Stock" on 1 holding line, because the two spellings are nearly identical and each balance carried over exactly. Example (Liquide Air, 39,324 shares): old title, new title

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,347 filings from SEC EDGAR, and how we read them

All 1,347 Forms 3, 4 and 5 filed for Plug Power Inc (SEC CIK 1093691) from Oct 28, 1999 to Oct 2, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages. 49 older filings exist only on paper and could not be read.

Probable 1-for-10 stock split on or before May 19, 2011 (split date stated in a footnote). Splits aren't reported as transactions; 5 holding lines changed by exactly this ratio, so earlier share counts are restated.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (58)No filing in 18 months; last reported balances, not in any total

Name	Last filed	Last reported balance
Sanjay Shrestha	Apr 30, 2024	168,163 shares, last reported balance as of Sep 29, 2023
David Mindnich	Jan 19, 2024	187,643 shares, last reported balance as of Sep 5, 2023
Keith Schmid	Oct 3, 2023	677,201 shares, last reported balance as of Sep 29, 2023
Jonathan Silver	Jul 6, 2023	134,118 shares, last reported balance as of Jul 3, 2023
Jean Bua	Jul 6, 2023	22,669 shares, last reported balance as of Jul 3, 2023
Dirk Hoefelmann	Apr 27, 2023	281,581 shares, last reported balance as of Mar 3, 2023
Lucas Schneider	Apr 5, 2023	265,612 shares, last reported balance as of Apr 3, 2023
Keith Schmidt	Dec 2, 2022	462,768 shares, last reported balance as of Sep 28, 2022
Johannes Roth	Jul 15, 2022	3,385,864 shares, last reported balance as of Jul 1, 2022
Kim Harriman	Jul 15, 2022	6,471 shares, last reported balance as of Jul 1, 2022
FiveT Capital Holding AG	Nov 17, 2020	1,881,582 shares, last reported balance as of Apr 16, 2020
Gregory Graves	Jul 1, 2019	83,431 shares, last reported balance as of May 9, 2019
Douglas Hickey	Jul 5, 2018	121,530 shares, last reported balance as of Jul 2, 2018
Liquide Air	Sep 27, 2017	81,259 shares, last reported balance as of Sep 22, 2017
Larry Garberding	Apr 5, 2017	361,496 shares, last reported balance as of Apr 3, 2017
Xavier Pontone	Apr 5, 2017	44,100 shares, last reported balance as of Apr 3, 2017
AXANE SA	Aug 28, 2015	4,781,250 shares, last reported balance as of Jul 31, 2015
Erik Hansen	Jul 29, 2014	301,713 shares, last reported balance as of Jul 24, 2013
Evgeny Miroshnichenko	Jul 2, 2014	62,254 shares, last reported balance as of Jul 1, 2014
Joint Stock Co INTER RAO UES	Dec 5, 2013	4,462,693 shares, last reported balance as of Sep 16, 2013
JSC INTER RAO Capital	Dec 5, 2013	4,462,693 shares, last reported balance as of Sep 16, 2013
Adrian Corless	Jul 30, 2013	307,323 shares, last reported balance as of Jul 24, 2013
Evgeny Rasskazov	Jul 5, 2013	51,344 shares, last reported balance as of Jul 2, 2013
Austin Marxe	Feb 19, 2013	1,511,620 shares, last reported balance as of Feb 14, 2013
OJSC Third Generation Co of the Wholesale Electricity Market	Oct 1, 2012	4,462,694 shares, last reported balance as of Dec 20, 2008
Gerald Anderson	Dec 16, 2011	15,228 shares, last reported balance as of Feb 8, 2010
SMART HYDROGEN, INC.	May 10, 2011	552,194 shares, last reported balance as of Feb 8, 2008
Jeffrey Drazan	Jan 10, 2011	5,351 shares, last reported balance as of Jan 10, 2011
Mark Sperry	Mar 26, 2010	20,189 shares, last reported balance as of Mar 5, 2010
Chris Reid	May 22, 2009	3,484 shares, last reported balance as of Dec 20, 2008
Joel Gross	Apr 3, 2009	3,362 shares, last reported balance as of Apr 2, 2009
Michael McGuire Jr.	Apr 3, 2009	1,182 shares, last reported balance as of Apr 2, 2009
Andrew Dimitri	Apr 3, 2009	739 shares, last reported balance as of Apr 2, 2009
Dennis Pivnyuk	Apr 3, 2009	992 shares, last reported balance as of Apr 2, 2009
Douglas Grant	Jan 7, 2009	9,052 shares, last reported balance as of Jan 2, 2009
Peter Woicke	Jan 7, 2009	4,067 shares, last reported balance as of Jan 2, 2009
Sergey Batekhin	Oct 6, 2008	1,573 shares, last reported balance as of Oct 2, 2008
Lisa Rosenblum	Oct 6, 2008	1,453 shares, last reported balance as of Oct 2, 2008
Sergey Polikarpov	Jul 3, 2008	1,534 shares, last reported balance as of Jul 2, 2008
Thomas Hutchison	May 22, 2008	7,800 shares, last reported balance as of Jun 28, 2006
Joseph Millington	May 22, 2008	4,464 shares, last reported balance as of Apr 3, 2008
Allan Greenberg	May 22, 2008	1,500 shares, last reported balance as of Oct 30, 2006
Bradley Johnson	May 22, 2008	500 shares, last reported balance as of Feb 4, 2008
DTE ENERGY CO	Jan 28, 2008	806,623 shares, last reported balance as of Dec 24, 2007
Allen Bucknam	Oct 24, 2007	3,144 shares, last reported balance as of Oct 22, 2007
David Waldek	Mar 7, 2007	No balance on record
John Elter	Mar 6, 2007	8,697 shares, last reported balance as of Feb 1, 2007
Gregory Silvestri	Mar 6, 2007	10,600 shares, last reported balance as of Feb 1, 2007
Jean Nelson	Nov 28, 2006	2,400 shares, last reported balance as of Nov 27, 2006
John Shalikashvili	Jun 30, 2006	838 shares, last reported balance as of Jun 1, 2005
Robert Powers	Jun 30, 2006	259 shares, last reported balance as of Jun 28, 2006
David Neumann	Feb 10, 2006	3,528 shares, last reported balance as of Feb 1, 2006
Robert Buckler	Dec 23, 2005	No balance on record
Richard Stewart	Jun 3, 2005	No balance on record
Anthony Earley Jr.	Jun 3, 2005	400 shares, last reported balance as of Jun 1, 2005
Roger Saillant	May 16, 2005	5,017 shares, last reported balance as of May 13, 2005
MECHANICAL TECHNOLOGY INC	Aug 19, 2003	607,323 shares, last reported balance as of Aug 18, 2003
Kyungyeol Song		No balance on record

Plug Power Inc insiders sold $900K in the past 12 months. How much of their stake is that?

What stands out

Who sold, and how much of their stake

Selling by month

Common questions

Why are Plug Power Inc insiders selling?

Are any Plug Power Inc insiders buying?

How much of their stake did Plug Power Inc insiders sell?

The evidence

Taxes

Purchases · 1 buyer (1 trade)

Sales by month