Insider trading

Period: 120 months Stock: PLUG Role: Directors × + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

46 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

46 decisions over 120 months Remove this filter
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

46 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

46 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
46 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
46 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

46 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
8 Jun 2026
HELMER MAUREEN O Director
Sold on a plan
$161.62K 50,000 at 3.23
13.5%
Planned (10b5-1)
1 Nov 2024
MCNAMEE GEORGE C Director
Sold on a plan
$20.92K 10,000 at 2.09
1.4%
Planned (10b5-1)
1 Aug 2024
MCNAMEE GEORGE C Director
Sold on a plan
$23.72K 10,000 at 2.37
1.4%
Planned (10b5-1)
10 May 2024
MCNAMEE GEORGE C Director
Sold on a plan
$25.58K 10,000 at 2.56
1.5%
Planned (10b5-1)
13 Jan 2021
MCNAMEE GEORGE C Director
Sold, plan not stated
$704.50K 10,000 at 70.45
1.1%
12 Jan 2021
MCNAMEE GEORGE C Director
Sold, plan not stated
$624.00K 10,000 at 62.40
1.1%
11 Jan 2021
Sold, plan not stated
$87.08K 1,780 at 48.92
4.0%
8 Jan 2021
MCNAMEE GEORGE C Director
Sold, plan not stated
$520.70K 10,000 at 52.07
1.1%
6 Jan 2021
MCNAMEE GEORGE C Director
Sold, plan not stated
$350.00K 10,000 at 35.00
1.1%
4 Jan 2021
Sold, plan not stated 3×
$112.71K 3,500 at 32.20
2.7%
28 Dec 2020
Kenausis Gregory Director
Sold, plan not stated 4×
$1.91M 55,000 at 34.65
38.1%
17 Dec 2020
HELMER MAUREEN O Director
Sold, plan not stated
$300.00K 10,000 at 30.00
8.1%
14 Dec 2020
HELMER MAUREEN O Director
Sold, plan not stated 2×
$400.11K 15,311 at 26.13
11.0%
11 Dec 2020
WILLIS GARY K Director
Sold, plan not stated 2×
$2.42M 90,200 at 26.86
18.0%
13 Nov 2020
Roth Johannes Minho Director · indirect
Sold, plan not stated 2×
$44.26M 1,915,034 at 23.11
100%
Sold half or more
13 Nov 2020
Sold, plan not stated 2×
$44.26M 1,915,034 at 23.11
100%
Sold half or more
9 Nov 2020
Sold, plan not stated
$851.60K 42,576 at 20.00
49.0%
9 Nov 2020
MCNAMEE GEORGE C Director
Sold, plan not stated
$631.43K 30,000 at 21.05
3.3%
14 Oct 2020
Sold, plan not stated
$1.33M 76,286 at 17.39
63.2%
Sold half or more
12 Oct 2020
Kenausis Gregory Director
Sold, plan not stated 2×
$1.07M 60,000 at 17.87
29.4%
8 Oct 2020
MCNAMEE GEORGE C Director
Sold, plan not stated
$855.00K 45,000 at 19.00
4.8%
5 Oct 2020
HELMER MAUREEN O Director
Sold, plan not stated
$525.00K 35,000 at 15.00
20.1%
1 Oct 2020
Sold, plan not stated
$48.40K 3,500 at 13.83
2.8%
18 Sep 2020
HELMER MAUREEN O Director
Sold, plan not stated
$996.23K 75,000 at 13.28
30.2%
6 Aug 2020
MCNAMEE GEORGE C Director
Sold, plan not stated
$669.19K 65,000 at 10.30
6.8%
13 Jul 2020
MCNAMEE GEORGE C Director
Sold, plan not stated 2×
$13.26K 1,500 at 8.84
0.2%
1 Jul 2020
Sold, plan not stated
$31.38K 3,500 at 8.96
2.7%
23 Jun 2020
HELMER MAUREEN O Director
Sold, plan not stated
$944.55K 150,164 at 6.29
37.8%
23 Apr 2020
Roth Johannes Minho Director · indirect
Sold, plan not stated
$2.40M 552,529 at 4.35
100%
Sold half or more
23 Apr 2020
FiveT Capital Holding AG Director · indirect
Sold, plan not stated
$2.40M 552,529 at 4.35
100%
Sold half or more
22 Apr 2020
Roth Johannes Minho Director · indirect
Sold, plan not stated
$1.73M 398,950 at 4.33
41.9%
22 Apr 2020
FiveT Capital Holding AG Director · indirect
Sold, plan not stated
$1.73M 398,950 at 4.33
41.9%
16 Apr 2020
HELMER MAUREEN O Director
Sold, plan not stated
$492.90K 115,000 at 4.29
32.9%
18 Mar 2019
MCNAMEE GEORGE C Director
Bought
$233.84K 100,000 at 2.34
13.8%
First buy on file
12 Sep 2018
GRAVES GREGORY B Director
Sold, plan not stated
$54.28K 31,343 at 1.73
42.0%
22 Sep 2017
Sold, plan not stated
$11.66K 4,855 at 2.40
11.0%
15 Sep 2017
MCNAMEE GEORGE C Director
Bought
$55.25K 25,000 at 2.21
3.9%
First buy on file
14 Sep 2017
MCNAMEE GEORGE C Director
Bought
$58.47K 25,000 at 2.34
4.1%
First buy on file
13 Sep 2017
MCNAMEE GEORGE C Director
Bought
$58.50K 25,000 at 2.34
4.3%
First buy on file
12 Sep 2017
MCNAMEE GEORGE C Director
Bought
$54.25K 25,000 at 2.17
4.5%
First buy on file
11 Sep 2017
MCNAMEE GEORGE C Director
Bought
$53.25K 25,000 at 2.13
4.7%
First buy on file
8 Sep 2017
MCNAMEE GEORGE C Director
Bought 2×
$106.20K 49,400 at 2.15
10.1%
First buy on file
7 Sep 2017
MCNAMEE GEORGE C Director
Bought 2×
$54.52K 25,600 at 2.13
5.6%
First buy on file
21 Jun 2017
Sold, plan not stated
$13.99K 6,247 at 2.24
13.7%
16 Mar 2017
Sold, plan not stated
$13.54K 12,636 at 1.07
24.3%
21 Dec 2016
Sold, plan not stated
$26.22K 19,000 at 1.38
32.6%
Showing 1–46 of 46.