Insider trading

Period: 120 months Stock: TENB Share of holding: 50% or more × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

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

59 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.

59 decisions over 120 months
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.

59 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.

59 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.
59 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
59 decisions over 120 months Remove this filter
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.

59 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
4 May 2026
Brown Matthew Charles Chief Financial Officer
Bought
$258.48K 12,000 at 21.54
64.7%
First buy on file
15 Dec 2025
SEAWELL A BROOKE Director · indirect
Sold at will
$2.85M 115,000 at 24.82
100%
Sold half or more
9 Sep 2025
SEAWELL A BROOKE Director · indirect
Sold at will
$462.00K 15,000 at 30.80
100%
Sold half or more
11 Mar 2025
Zecher Linda Kay Director
Sold at will
$92.50K 2,500 at 37.00
87.6%
Sold half or more
9 Feb 2024
Zecher Linda Kay Director
Sold at will
$131.95K 2,600 at 50.75
99.9%
Sold half or more
27 Apr 2023
Zecher Linda Kay Director
Sold at will
$121.15K 3,320 at 36.49
56.1%
Sold half or more
10 Feb 2023
Zecher Linda Kay Director
Sold, plan not stated
$309.68K 7,000 at 44.24
54.2%
Sold half or more
7 Feb 2023
Sold, plan not stated
$254.88K 6,000 at 42.48
51.7%
Sold half or more
21 Nov 2022
Thurmond Mark C. Chief Operating Officer
Sold, plan not stated
$98.73K 2,565 at 38.49
58.4%
Sold half or more
16 May 2022
Kennelly Jerry M Director
Sold, plan not stated 2×
$467.01K 10,000 at 46.70
60.0%
Sold half or more
15 Feb 2022
Kennelly Jerry M Director
Sold, plan not stated 2×
$503.79K 10,000 at 50.38
60.0%
Sold half or more
15 Nov 2021
Kennelly Jerry M Director
Sold, plan not stated 2×
$539.31K 10,000 at 53.93
60.0%
Sold half or more
28 Jun 2021
Riddick Stephen A General Counsel & Secretary
Sold, plan not stated 2×
$3.23M 75,000 at 43.07
74.9%
Sold half or more
16 Jun 2021
Sold, plan not stated
$916.70K 21,279 at 43.08
100%
Sold half or more
15 Jun 2021
Sold, plan not stated
$2.40M 55,388 at 43.30
100%
Sold half or more
8 Jun 2021
Zecher Linda Kay Director
Sold, plan not stated
$171.28K 4,000 at 42.82
59.9%
Sold half or more
28 May 2021
Sold, plan not stated
$280.43K 6,677 at 42.00
100%
Sold half or more
1 Apr 2021
Sold, plan not stated
$713.55K 19,166 at 37.23
57.4%
Sold half or more
17 Feb 2021
Vintz Stephen A Chief Financial Officer
Sold, plan not stated 2×
$3.02M 68,517 at 44.06
56.6%
Sold half or more
16 Feb 2021
Vintz Stephen A Chief Financial Officer
Sold, plan not stated 3×
$5.91M 131,483 at 44.98
71.5%
Sold half or more
16 Feb 2021
Kennelly Jerry M Director
Sold, plan not stated 3×
$719.95K 16,000 at 45.00
100%
Sold half or more
22 Jan 2021
Riddick Stephen A General Counsel & Secretary
Sold, plan not stated 3×
$5.39M 100,000 at 53.87
89.4%
Sold half or more
4 Jan 2021
Sold, plan not stated
$1.00M 19,166 at 52.34
57.4%
Sold half or more
18 Dec 2020
Sold, plan not stated 3×
$660.43K 14,239 at 46.38
100%
Sold half or more
16 Nov 2020
Kennelly Jerry M Director
Sold, plan not stated
$552.48K 16,000 at 34.53
100%
Sold half or more
3 Nov 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated
$926.15K 25,699 at 36.04
100%
Sold half or more
3 Nov 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated
$274.39K 7,614 at 36.04
100%
Sold half or more
13 Oct 2020
Sold, plan not stated 2×
$1.03M 24,706 at 41.65
63.4%
Sold half or more
12 Oct 2020
Sold, plan not stated 3×
$5.60M 135,367 at 41.38
90.5%
Sold half or more
1 Oct 2020
Sold, plan not stated
$1.47M 38,332 at 38.33
72.9%
Sold half or more
17 Aug 2020
Kennelly Jerry M Director
Sold, plan not stated
$535.84K 16,000 at 33.49
100%
Sold half or more
10 Aug 2020
Zecher Linda Kay Director
Sold, plan not stated
$185.99K 5,776 at 32.20
100%
Sold half or more
4 Aug 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$293.94M 9,200,000 at 31.95
99.1%
Sold half or more
3 Aug 2020
Riddick Stephen A General Counsel & Secretary
Sold, plan not stated 2×
$2.67M 77,420 at 34.53
89.9%
Sold half or more
29 Jul 2020
Vintz Stephen A Chief Financial Officer
Sold, plan not stated 2×
$1.73M 50,000 at 34.52
53.4%
Sold half or more
29 Jul 2020
Sold, plan not stated
$1.34M 38,332 at 35.05
72.9%
Sold half or more
22 Jul 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$39.86M 1,271,345 at 31.35
90.3%
Sold half or more
21 Jul 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$9.47M 300,000 at 31.57
67.4%
Sold half or more
9 Jul 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$7.97M 255,000 at 31.24
63.3%
Sold half or more
8 Jun 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$5.69M 188,770 at 30.14
55.8%
Sold half or more
3 Jun 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$5.44M 179,178 at 30.37
54.2%
Sold half or more
1 Jun 2020
Riddick Stephen A General Counsel & Secretary
Sold, plan not stated
$1.58M 50,000 at 31.50
85.1%
Sold half or more
22 May 2020
Insight Holdings Group, LLC 10% owner · indirect
Sold, plan not stated 8×
$36.99M 1,267,133 at 29.19
89.2%
Sold half or more
20 May 2020
Riddick Stephen A General Counsel & Secretary
Sold, plan not stated
$1.49M 49,900 at 29.79
87.4%
Sold half or more
18 May 2020
Kennelly Jerry M Director
Sold, plan not stated
$198.56K 6,740 at 29.46
100%
Sold half or more
15 May 2020
Kennelly Jerry M Director
Sold, plan not stated
$465.60K 16,000 at 29.10
100%
Sold half or more
18 Feb 2020
Kennelly Jerry M Director
Sold, plan not stated
$445.44K 16,000 at 27.84
100%
Sold half or more
15 Nov 2019
Kennelly Jerry M Director
Sold, plan not stated
$428.00K 16,000 at 26.75
100%
Sold half or more
6 Aug 2019
Kennelly Jerry M Director
Sold, plan not stated 2×
$367.31K 16,000 at 22.96
100%
Sold half or more
9 Jul 2019
Negron John Chief Revenue Officer
Sold, plan not stated
$965.05K 32,417 at 29.77
51.6%
Sold half or more
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