PLUG

Plug Power Inc.$2.06+0.17 (+9.21%)

Prev Close$1.90·MCap$2.73B·P/E—·Vol42.85M·Yield—

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Buys (12M)

$87.3K

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Sells (12M)

$538.5K

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Net Activity

Net Seller

$451.2K

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Plug Power Inc. (PLUG) has been dominated by selling, with 1 insider purchase totaling $87.3K and 5 insider sales totaling $538.5K. The most recent insider transaction was by HELMER MAUREEN O (director), who sold $161.6K worth of shares on Jun 10, 2026. Plug Power Inc. operates in the Industrials sector, within the Electrical Equipment & Parts industry, with a market cap of $2.73B.

PLUG Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jun 10, 2026	HELMER MAUREEN O	director	Sell	50,000	$3.23	$161.6K	321,565
Jan 12, 2026	Haycraft Benjamin	CSO & GM EMEA	Sell	40,000	$2.17	$86.8K	0
Dec 15, 2025	Crespo Jose Luis	See Remarks	Buy	37,300	$2.34	$87.3K	0
Nov 10, 2025	Haycraft Benjamin	CSO & EVP of EMEA Region	Sell	10,000	$2.92	$29.2K	0
Oct 10, 2025	Haycraft Benjamin	CSO & GM EMEA	Sell	93,774	$2.60	$243.5K	0
Sep 16, 2025	Haycraft Benjamin	CSO & GM of EMEA Region	Sell	10,972	$1.59	$17.4K	0
Jun 11, 2025	Crespo Jose Luis	Chief Revenue Officer	Sell	37,300	$1.32	$49.2K	0
Jun 9, 2025	MIDDLETON PAUL B	See Remarks	Buy	650,000	$1.03	$672.0K	0
May 16, 2025	MIDDLETON PAUL B	CFO & Executive VP	Buy	350,000	$0.72	$250.4K	0
May 5, 2025	Conway Gerard L JR	Gen. Coun, Corp Sec., Exec. VP	Sell	16,188	$0.84	$13.6K	0
May 5, 2025	Crespo Jose Luis	Chief Revenue Officer	Sell	16,689	$0.84	$14.0K	0
May 5, 2025	MIDDLETON PAUL B	CFO & Executive VP	Sell	17,081	$0.84	$14.3K	0
Apr 6, 2025	Hull Martin Daniel	Corporate Controller and CAO	Sell	18,650	$1.22	$22.8K	0
Nov 5, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.09	$20.9K	684,782
Aug 2, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.37	$23.7K	683,444
May 13, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.56	$25.6K	639,572
Oct 4, 2023	Crespo Jose Luis	GM, MATL Handling, Key Accts	Sell	31,958	$7.20	$230.1K	250,609
Jul 22, 2021	Shrestha Sanjay K	Chief Strategy Officer	Sell	5,700	$28.43	$162.1K	269,300

PLUG Insider Buying Activity

The following table shows recent insider purchases of Plug Power Inc. (PLUG) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value
Dec 15, 2025	Crespo Jose Luis	See Remarks	Buy	37,300	$2.34	$87.3K
Jun 9, 2025	MIDDLETON PAUL B	See Remarks	Buy	650,000	$1.03	$672.0K
May 16, 2025	MIDDLETON PAUL B	CFO & Executive VP	Buy	350,000	$0.72	$250.4K

PLUG Insider Selling Activity

The following table shows recent insider sales of Plug Power Inc. (PLUG) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jun 10, 2026	HELMER MAUREEN O	director	Sell	50,000	$3.23	$161.6K	321,565
Jan 12, 2026	Haycraft Benjamin	CSO & GM EMEA	Sell	40,000	$2.17	$86.8K	0
Nov 10, 2025	Haycraft Benjamin	CSO & EVP of EMEA Region	Sell	10,000	$2.92	$29.2K	0
Oct 10, 2025	Haycraft Benjamin	CSO & GM EMEA	Sell	93,774	$2.60	$243.5K	0
Sep 16, 2025	Haycraft Benjamin	CSO & GM of EMEA Region	Sell	10,972	$1.59	$17.4K	0
Jun 11, 2025	Crespo Jose Luis	Chief Revenue Officer	Sell	37,300	$1.32	$49.2K	0
May 5, 2025	Conway Gerard L JR	Gen. Coun, Corp Sec., Exec. VP	Sell	16,188	$0.84	$13.6K	0
May 5, 2025	Crespo Jose Luis	Chief Revenue Officer	Sell	16,689	$0.84	$14.0K	0
May 5, 2025	MIDDLETON PAUL B	CFO & Executive VP	Sell	17,081	$0.84	$14.3K	0
Apr 6, 2025	Hull Martin Daniel	Corporate Controller and CAO	Sell	18,650	$1.22	$22.8K	0
Nov 5, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.09	$20.9K	684,782
Aug 2, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.37	$23.7K	683,444
May 13, 2024	MCNAMEE GEORGE C	Director	Sell	10,000	$2.56	$25.6K	639,572
Oct 4, 2023	Crespo Jose Luis	GM, MATL Handling, Key Accts	Sell	31,958	$7.20	$230.1K	250,609
Jul 22, 2021	Shrestha Sanjay K	Chief Strategy Officer	Sell	5,700	$28.43	$162.1K	269,300