Insider trading

Period: 120 months Stock: TGEN Role: Directors × + Add filter Clear all
Views & alerts

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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.

110 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.

110 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.

110 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.

110 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.
110 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
110 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.

110 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
24 Apr 2026
Ghoniem Ahmed Director
Bought
$10.00K 12,723 at 0.79
opened
First buy on file
13 Apr 2026
Hirsch Susan B Director
Bought
$18.65K 5,000 at 3.73
1.9%
27 Mar 2026
Hirsch Susan B Director
Bought
$25.40K 10,000 at 2.54
4.0%
Largest buy in 3 yrs
27 Mar 2026
Lewis Earl Director
Bought
$12.60K 5,000 at 2.52
0.5%
26 Mar 2026
Lewis Earl Director
Bought
$14.41K 5,000 at 2.88
0.5%
22 Nov 2024
Lewis Earl Director
Bought
$71.00K 100,000 at 0.71
15.7%
Largest buy in 3 yrs
27 Sep 2024
Hatsopoulos John Director
Bought
$8.38K 10,000 at 0.84
1.0%
25 Sep 2024
Hatsopoulos John Director
Bought
$8.60K 10,000 at 0.86
1.0%
19 Aug 2024
Hatsopoulos John Director
Bought
$8.95K 10,000 at 0.90
1.0%
15 Jul 2024
Lewis Earl Director
Bought
$6.80K 10,000 at 0.68
1.6%
15 Jul 2024
Lewis Earl Director · indirect
Bought
$6.80K 10,000 at 0.68
1.6%
10 Jul 2024
Hatsopoulos John Director
Bought
$14.60K 22,466 at 0.65
2.4%
29 May 2024
Hatsopoulos John Director
Bought
$8.00K 10,000 at 0.80
1.1%
28 May 2024
Hatsopoulos John Director
Bought
$1.01K 1,265 at 0.80
0.1%
24 May 2024
Hatsopoulos John Director
Bought
$6.99K 8,735 at 0.80
1.0%
22 May 2024
Hatsopoulos John Director
Bought
$2.53K 3,200 at 0.79
0.4%
21 May 2024
Hatsopoulos John Director
Bought
$10.90K 13,800 at 0.79
1.5%
16 May 2024
Hatsopoulos John Director
Bought
$2.25K 3,000 at 0.75
0.3%
15 May 2024
Hatsopoulos John Director
Bought
$7.40K 10,000 at 0.74
1.1%
1 May 2024
Lewis Earl Director
Bought
$3.75K 5,000 at 0.75
0.8%
24 Apr 2024
Lewis Earl Director
Bought
$6.80K 10,000 at 0.68
1.7%
24 Apr 2024
Hatsopoulos John Director
Bought
$3.35K 5,000 at 0.67
0.6%
23 Apr 2024
Hatsopoulos John Director
Bought 2×
$4.10K 6,000 at 0.68
0.7%
16 Apr 2024
Hatsopoulos John Director
Bought
$679.00 1,000 at 0.68
0.1%
15 Apr 2024
Hatsopoulos John Director
Bought
$700.00 1,000 at 0.70
0.1%
12 Apr 2024
Hatsopoulos John Director
Bought
$699.70 1,000 at 0.70
0.1%
11 Apr 2024
Hatsopoulos John Director
Bought
$700.00 1,000 at 0.70
0.1%
9 Apr 2024
Hatsopoulos John Director
Bought
$700.00 1,000 at 0.70
0.1%
8 Apr 2024
Hatsopoulos John Director
Bought
$700.00 1,000 at 0.70
0.1%
1 Apr 2024
Hatsopoulos John Director
Bought 2×
$3.93K 5,612 at 0.70
0.6%
28 Mar 2024
Hatsopoulos John Director
Bought
$1.67K 2,388 at 0.70
0.3%
27 Mar 2024
Hatsopoulos John Director
Bought
$1.40K 2,000 at 0.70
0.2%
24 Jan 2024
Lewis Earl Director
Bought
$7.14K 9,152 at 0.78
1.7%
23 Jan 2024
Lewis Earl Director
Bought
$6.80K 10,000 at 0.68
1.8%
22 Jan 2024
Hatsopoulos John Director
Bought
$7.70K 10,000 at 0.77
1.2%
18 Jan 2024
Hatsopoulos John Director
Bought
$7.35K 10,000 at 0.73
1.2%
16 Jan 2024
Hatsopoulos John Director
Bought
$73.46K 100,000 at 0.73
13.5%
Largest buy in 3 yrs
27 Dec 2023
Hatsopoulos John Director
Bought
$20.00K 25,000 at 0.80
3.5%
22 Dec 2023
Hatsopoulos John Director
Bought
$20.00K 25,000 at 0.80
3.6%
14 Dec 2023
Hatsopoulos John Director
Bought 3×
$44.68K 50,000 at 0.89
7.8%
20 Nov 2023
Hatsopoulos John Director
Bought
$3.38K 4,000 at 0.85
0.6%
17 Nov 2023
Hatsopoulos John Director
Bought
$38.87K 46,000 at 0.85
7.8%
14 Nov 2023
Hatsopoulos John Director
Bought
$84.50 100 at 0.85
0.0%
19 Oct 2023
Hirsch Susan B Director
Bought
$4.58K 5,000 at 0.92
2.0%
First buy on file
18 Oct 2023
Lewis Earl Director
Bought
$22.75K 25,000 at 0.91
4.8%
17 Oct 2023
Hatsopoulos John Director
Bought
$40.00K 50,000 at 0.80
9.3%
12 Oct 2023
Hatsopoulos John Director
Bought
$40.00K 50,000 at 0.80
10.2%
9 Oct 2023
Lewis Earl Director
Bought 2×
$3.20K 4,000 at 0.80
0.6%
29 Sep 2023
Hatsopoulos John Director
Bought
$1.96K 2,000 at 0.98
0.4%
27 Sep 2023
Hatsopoulos John Director
Bought
$1.26K 1,380 at 0.91
0.3%
Showing 1–50 of 110. Page 1 of 3 Older →