Insider trading

Period: 12 months Stock: ARM Type of trade: Sold × + 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.

23 decisions over 12 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.

23 decisions over 12 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.

23 decisions over 12 months Remove this filter
The trade

Minimum amount

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

23 decisions over 12 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.
23 decisions over 12 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
23 decisions over 12 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.

23 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
21 Sep 2026
Child Jason Chief Financial Officer
Sold on a plan
$3.12M 10,400 at 300.00
6.3%
Planned (10b5-1)
27 Aug 2026
Child Jason Chief Financial Officer
Sold on a plan
$2.66M 10,400 at 255.33
6.0%
Planned (10b5-1)
2 Jun 2026
Bartels Laura Kathleen Chief Accounting Officer
Sold at will
$4.44M 11,306 at 392.70
48.2%
Not planned
1 Jun 2026
Abbey William Chief Commercial Officer
Sold at will 2×
$2.64M 6,566 at 402.72
24.2%
Not planned
28 May 2026
Abbey William Chief Commercial Officer
Sold at will
$1.44M 4,200 at 343.81
13.4%
Not planned
22 May 2026
Abbey William Chief Commercial Officer
Sold at will
$703.39K 2,300 at 305.82
6.8%
Not planned
21 May 2026
Eaton Charlotte Claire Chief People Officer
Sold at will 3×
$3.39M 11,805 at 287.56
100%
Sold half or more
21 May 2026
Abbey William Chief Commercial Officer
Sold at will
$1.34M 4,655 at 287.03
12.2%
Not planned
20 May 2026
Child Jason Chief Financial Officer
Sold on a plan
$7.23M 31,920 at 226.54
15.5%
Planned (10b5-1)
20 May 2026
Abbey William Chief Commercial Officer
Sold at will
$1.30M 5,069 at 257.18
11.7%
Not planned
20 May 2026
Eaton Charlotte Claire Chief People Officer
Sold at will
$781.98K 3,100 at 252.25
20.8%
Not planned
19 May 2026
Collins Spencer Chief Legal Officer
Sold at will
$8.80M 40,941 at 215.00
100%
Sold half or more
19 May 2026
Abbey William Chief Commercial Officer
Sold at will
$2.44M 10,887 at 224.14
20.1%
Not planned
18 May 2026
Grisenthwaite Richard Roy Chief Architect
Sold at will
$5.09M 24,339 at 209.15
100%
Sold half or more
15 May 2026
Abbey William Chief Commercial Officer
Sold on a plan
$1.49M 7,000 at 212.55
10.9%
Planned (10b5-1)
11 May 2026
Collins Spencer Chief Legal Officer
Sold at will 8×
$11.00M 51,961 at 211.73
100%
Sold half or more
24 Apr 2026
Abbey William Chief Commercial Officer
Sold on a plan
$350.08K 1,577 at 221.99
2.7%
Planned (10b5-1)
23 Apr 2026
Abbey William Chief Commercial Officer
Sold on a plan
$313.82K 1,577 at 199.00
2.8%
Planned (10b5-1)
22 Apr 2026
Child Jason Chief Financial Officer
Sold on a plan
$3.83M 21,280 at 180.00
12.2%
Planned (10b5-1)
14 Apr 2026
Haas Rene A. Chief Executive Officer
Sold on a plan 3×
$1.50M 9,299 at 160.85
3.3%
Planned (10b5-1)
26 Mar 2026
Haas Rene A. Chief Executive Officer
Sold on a plan 4×
$1.28M 7,986 at 160.86
2.7%
Planned (10b5-1)
25 Mar 2026
Haas Rene A. Chief Executive Officer
Sold on a plan 4×
$3.85M 23,867 at 161.17
7.6%
Planned (10b5-1)
25 Mar 2026
Child Jason Chief Financial Officer
Sold on a plan
$3.16M 21,280 at 148.37
10.9%
Planned (10b5-1)
Showing 1–23 of 23.