Insider trading

Period: 120 months Stock: ALRM Role: Directors × + 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 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.

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
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
18 Mar 2026
NEVIN DARIUS G Director
Sold on a plan
$1.66M 36,000 at 46.17
59.6%
Sold half or more
12 Dec 2025
Evans Stephen C. Director
Sold at will
$60.32K 1,154 at 52.27
15.9%
Not planned
11 Jun 2025
Evans Stephen C. Director
Sold at will
$59.64K 1,000 at 59.64
12.1%
Not planned
20 Nov 2024
Evans Stephen C. Director
Sold at will
$156.63K 2,625 at 59.67
31.3%
Not planned
15 Mar 2024
NEVIN DARIUS G Director
Sold at will
$190.72K 2,593 at 73.55
11.7%
Not planned
27 Feb 2024
Evans Stephen C. Director
Sold at will
$74.12K 1,000 at 74.12
14.1%
Not planned
7 Jun 2023
WU Simone Director
Sold on a plan
$45.14K 868 at 52.00
14.8%
Planned (10b5-1)
7 Jun 2022
WU Simone Director
Sold, plan not stated
$44.43K 697 at 63.74
10.6%
10 Jun 2021
WU Simone Director
Sold, plan not stated
$129.80K 1,594 at 81.43
38.6%
15 Mar 2021
Clarke Donald E Director
Sold, plan not stated 2×
$1.17M 13,161 at 88.60
39.3%
25 Nov 2020
Clarke Donald E Director
Sold, plan not stated
$1.09M 15,000 at 72.74
35.3%
10 Nov 2020
PANERO HUGH Director
Sold, plan not stated 2×
$529.54K 7,546 at 70.17
74.4%
Sold half or more
30 Sep 2020
Sold, plan not stated
$614.59K 11,150 at 55.12
16.6%
28 Sep 2020
Sold, plan not stated
$331.35K 5,967 at 55.53
8.1%
27 Aug 2020
McAdam Timothy P Director · indirect
Sold, plan not stated
$591.01K 9,872 at 59.87
100%
Sold half or more
9 Jun 2020
PANERO HUGH Director
Sold, plan not stated
$1.17M 20,000 at 58.59
66.4%
Sold half or more
15 Nov 2018
McAdam Timothy P Director · indirect
Sold, plan not stated
$1.08M 22,500 at 47.82
40.0%
14 Sep 2018
PANERO HUGH Director
Sold, plan not stated
$63.28K 1,115 at 56.75
18.7%
7 Sep 2018
McAdam Timothy P Director · indirect
Sold, plan not stated
$995.51K 17,600 at 56.56
62.4%
Sold half or more
6 Sep 2018
McAdam Timothy P Director · indirect
Sold, plan not stated 5×
$555.52K 10,000 at 55.55
11.5%
6 Sep 2018
McAdam Timothy P Director · indirect
Sold, plan not stated
$134.43K 2,400 at 56.01
7.8%
14 Jun 2018
PANERO HUGH Director
Sold, plan not stated
$453.78K 10,000 at 45.38
62.7%
Sold half or more
13 Jun 2018
McAdam Timothy P Director · indirect
Sold, plan not stated
$905.26K 20,407 at 44.36
100%
Sold half or more
18 May 2018
PANERO HUGH Director
Sold, plan not stated
$211.29K 5,000 at 42.26
28.2%
17 May 2018
PANERO HUGH Director
Sold, plan not stated
$825.80K 20,000 at 41.29
53.0%
Sold half or more
16 May 2018
PANERO HUGH Director
Sold, plan not stated
$811.60K 20,000 at 40.58
34.6%
2 Mar 2018
NEVIN DARIUS G Director
Bought
$372.10K 10,000 at 37.21
opened
First buy on file
14 Dec 2017
PANERO HUGH Director
Sold, plan not stated
$92.75K 2,500 at 37.10
4.3%
13 Dec 2017
PANERO HUGH Director
Sold, plan not stated
$600.41K 16,114 at 37.26
21.6%
12 Dec 2017
McAdam Timothy P Director · indirect
Sold, plan not stated
$750.64K 20,407 at 36.78
100%
Sold half or more
28 Nov 2017
McAdam Timothy P Director · indirect
Sold, plan not stated 2×
$702.38K 16,521 at 42.51
100%
Sold half or more
Showing 1–31 of 31.