Insider trading

Period: 120 months Stock: STEM Plan: Scheduled (10b5-1) × + Add filter Clear all
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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.

18 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.

18 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.

18 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.

18 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.
18 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
18 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.

18 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
11 Mar 2026
Tappin Matthew President, Software Products
Sold on a plan
$4.35K 402 at 10.83
12.5%
Planned (10b5-1)
16 Jun 2025
Tappin Matthew President, Software Division
Sold on a plan
$9.37K 20,823 at 0.45
35.7%
Planned (10b5-1)
30 May 2025
Tappin Matthew President, Software Division
Sold on a plan
$524.96 1,164 at 0.45
2.0%
Planned (10b5-1)
28 May 2024
Tappin Matthew President, Asset Management
Sold on a plan
$1.83K 1,388 at 1.32
7.7%
Planned (10b5-1)
2 May 2024
Carrington John Eugene CEO and Director
Sold on a plan
$359.22K 194,171 at 1.85
27.7%
Planned (10b5-1)
11 Mar 2024
Shukla Rahul Chief Accounting Officer
Sold on a plan
$47.14K 21,332 at 2.21
100%
Sold half or more
8 Mar 2024
Carrington John Eugene CEO and Director
Sold on a plan
$186.23K 85,038 at 2.19
24.5%
Planned (10b5-1)
8 Mar 2024
BUSH WILLIAM JOHN Chief Financial Officer
Sold on a plan
$100.81K 46,034 at 2.19
11.8%
Planned (10b5-1)
8 Mar 2024
Schaefer Robert President, Transformational
Sold on a plan
$82.04K 37,463 at 2.19
4.4%
Planned (10b5-1)
8 Mar 2024
Patel Prakesh Chief Strategy Officer
Sold on a plan
$78.63K 35,902 at 2.19
20.8%
Planned (10b5-1)
8 Mar 2024
Johnson larsh Chief Technology Officer
Sold on a plan
$78.58K 35,880 at 2.19
23.0%
Planned (10b5-1)
8 Mar 2024
Carlson Michael James Chief Operating Officer
Sold on a plan
$77.24K 35,269 at 2.19
32.3%
Planned (10b5-1)
8 Mar 2024
Laureles Saul R. Chief Legal Officer
Sold on a plan
$58.26K 26,602 at 2.19
15.2%
Planned (10b5-1)
8 Mar 2024
Homenock Kim Chief People Officer
Sold on a plan
$58.06K 26,512 at 2.19
17.9%
Planned (10b5-1)
8 Mar 2024
Tappin Matthew President, Asset Management
Sold on a plan
$54.53K 24,899 at 2.19
37.3%
Planned (10b5-1)
8 Mar 2024
Shukla Rahul Chief Accounting Officer
Sold on a plan
$43.58K 19,899 at 2.19
48.3%
Planned (10b5-1)
5 Mar 2024
Tappin Matthew President, Asset Management
Sold on a plan
$9.25K 3,837 at 2.41
5.4%
Planned (10b5-1)
16 Jun 2023
TROE LISA L Director
Sold on a plan
$39.36K 6,150 at 6.40
23.6%
Planned (10b5-1)
Showing 1–18 of 18.