Insider trading

Period: 120 months Stock: ALRM Plan: Discretionary × + 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.

31 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.

31 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.

31 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.

31 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.
31 decisions over 120 months Remove this filter
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
31 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.

31 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
12 Aug 2026
Bradley Kevin Christopher Chief Financial Officer
Sold at will
$297.38K 5,400 at 55.07
6.5%
Not planned
12 Jun 2026
Ramos Daniel See Remarks
Sold at will
$93.00K 2,000 at 46.50
3.6%
Not planned
10 Jun 2026
Ramos Daniel See Remarks
Sold at will
$369.84K 8,000 at 46.23
12.7%
Not planned
10 Jun 2026
Bradley Kevin Christopher Chief Financial Officer
Sold at will
$101.53K 2,200 at 46.15
2.5%
Not planned
16 Dec 2025
BEDELL JEFFREY A See Remarks
Sold at will
$1.18M 22,727 at 51.82
4.3%
Not planned
12 Dec 2025
BEDELL JEFFREY A See Remarks
Sold at will
$119.36K 2,273 at 52.51
0.4%
Not planned
12 Dec 2025
Evans Stephen C. Director
Sold at will
$60.32K 1,154 at 52.27
15.9%
Not planned
20 Nov 2025
Trundle Stephen Chief Executive Officer · indirect
Bought 2×
$480.66K 10,000 at 48.07
0.8%
19 Nov 2025
Trundle Stephen Chief Executive Officer · indirect
Bought
$605.12K 12,469 at 48.53
1.0%
Largest buy in 3 yrs
18 Nov 2025
Trundle Stephen Chief Executive Officer · indirect
Bought
$171.50K 3,531 at 48.57
0.3%
First buy on file
13 Nov 2025
Kerzner Daniel See Remarks
Sold at will
$503.30K 10,000 at 50.33
16.1%
Not planned
12 Nov 2025
Kerzner Daniel See Remarks
Sold at will
$1.01M 20,004 at 50.29
27.8%
Not planned
11 Jun 2025
Evans Stephen C. Director
Sold at will
$59.64K 1,000 at 59.64
12.1%
Not planned
12 Mar 2025
Valenzuela Steve Chief Financial Officer
Sold at will
$200.83K 3,436 at 58.45
8.4%
Not planned
6 Mar 2025
Valenzuela Steve Chief Financial Officer
Sold at will
$93.17K 1,564 at 59.57
4.0%
Not planned
13 Dec 2024
Kerzner Daniel See Remarks
Sold at will
$2.18M 32,851 at 66.40
35.5%
Not planned
10 Dec 2024
Trundle Stephen Chief Executive Officer
Sold at will 2×
$3.24M 47,500 at 68.18
15.8%
Not planned
20 Nov 2024
Evans Stephen C. Director
Sold at will
$156.63K 2,625 at 59.67
31.3%
Not planned
23 Aug 2024
Ramos Daniel See Remarks
Sold at will
$585.71K 9,476 at 61.81
18.7%
Not planned
22 Aug 2024
Valenzuela Steve Chief Financial Officer
Sold at will
$446.00K 7,400 at 60.27
16.5%
Not planned
15 Mar 2024
NEVIN DARIUS G Director
Sold at will
$190.72K 2,593 at 73.55
11.7%
Not planned
7 Mar 2024
Valenzuela Steve Chief Financial Officer
Sold at will
$62.05K 832 at 74.58
2.2%
Not planned
29 Feb 2024
Valenzuela Steve Chief Financial Officer
Sold at will
$533.63K 7,083 at 75.34
15.9%
Not planned
27 Feb 2024
Valenzuela Steve Chief Financial Officer
Sold at will
$708.09K 9,583 at 73.89
20.4%
Not planned
27 Feb 2024
Ramos Daniel See Remarks
Sold at will
$614.13K 8,250 at 74.44
17.2%
Not planned
27 Feb 2024
Evans Stephen C. Director
Sold at will
$74.12K 1,000 at 74.12
14.1%
Not planned
15 Aug 2023
Valenzuela Steve Chief Financial Officer
Sold at will
$153.93K 2,693 at 57.16
6.7%
Not planned
15 Aug 2023
Ramos Daniel See Remarks
Sold at will
$45.90K 795 at 57.73
2.0%
Not planned
14 Aug 2023
Ramos Daniel See Remarks
Sold at will
$522.18K 8,735 at 59.78
17.7%
Not planned
14 Aug 2023
Valenzuela Steve Chief Financial Officer
Sold at will
$292.40K 5,000 at 58.48
11.1%
Not planned
23 May 2023
Ramos Daniel See Remarks
Sold at will
$123.48K 2,400 at 51.45
5.0%
Not planned
Showing 1–31 of 31.