Insider trading

Period: 12 months Stock: CSTM Type of trade: Sold × Plan: Discretionary × + 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.

25 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.

25 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.

25 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.

25 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.
25 decisions over 12 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
25 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.

25 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
4 Jun 2026
Ormerod John Director
Sold at will
$280.08K 8,000 at 35.01
24.3%
Not planned
28 May 2026
Becker Marcus SVP CPO
Sold at will
$362.96K 10,391 at 34.93
38.2%
Not planned
14 May 2026
Jarrett Martin SVP Chief Innovation Officer
Sold at will
$157.80K 4,716 at 33.46
23.5%
Not planned
12 May 2026
Piquier Ludovic SVP Manuf Excellence & CTO
Sold at will
$33.57K 1,000 at 33.57
0.4%
Not planned
11 May 2026
Brun Nicolas SVP PA, Comm & Sust
Sold at will
$902.47K 26,661 at 33.85
20.3%
Not planned
8 May 2026
Corre Stephane President, AS&I
Sold at will
$167.60K 5,000 at 33.52
7.4%
Not planned
5 May 2026
Guo Jack Q. EVP & CFO
Sold at will
$822.06K 25,201 at 32.62
12.0%
Not planned
5 May 2026
Brandjes Michiel Director
Sold at will
$325.00K 10,400 at 31.25
20.0%
Not planned
1 May 2026
Hoffmann Philippe President, A&T
Sold at will
$1.60M 50,000 at 31.92
25.8%
Not planned
1 May 2026
Sold at will
$1.56M 48,784 at 32.01
22.1%
Not planned
1 May 2026
Corre Stephane President, AS&I
Sold at will
$160.20K 5,000 at 32.04
6.9%
Not planned
16 Mar 2026
Becker Marcus SVP CPO
Sold at will
$250.90K 10,000 at 25.09
26.9%
Not planned
10 Mar 2026
Guo Jack Q. EVP & CFO
Sold at will
$1.08M 41,717 at 25.87
17.9%
Not planned
10 Mar 2026
Sold at will
$773.51K 29,900 at 25.87
12.4%
Not planned
10 Mar 2026
Hoffmann Philippe President, A&T
Sold at will
$122.31K 4,728 at 25.87
2.5%
Not planned
10 Mar 2026
Sold at will
$119.36K 4,614 at 25.87
1.2%
Not planned
10 Mar 2026
Corre Stephane President, AS&I
Sold at will
$38.84K 1,500 at 25.89
2.3%
Not planned
10 Mar 2026
Becker Marcus SVP CPO
Sold at will
$28.79K 1,113 at 25.87
3.2%
Not planned
9 Mar 2026
Brun Nicolas SVP PA, Comm & Sust
Sold at will
$436.68K 17,701 at 24.67
14.6%
Not planned
4 Mar 2026
Hoffmann Philippe President, A&T
Sold at will 2×
$2.12M 80,000 at 26.45
59.1%
Sold half or more
27 Feb 2026
Corre Stephane President, AS&I
Sold at will
$74.07K 3,000 at 24.69
6.3%
Not planned
26 Feb 2026
Sold at will
$257.70K 10,000 at 25.77
30.3%
Not planned
25 Feb 2026
Corre Stephane President, AS&I
Sold at will
$82.26K 3,200 at 25.71
6.3%
Not planned
23 Feb 2026
Walters Stephen Charles SVP GC & Secretary
Sold at will
$38.09K 1,500 at 25.39
100%
Sold half or more
20 Feb 2026
Becker Marcus SVP CPO
Sold at will
$398.27K 15,570 at 25.58
100%
Sold half or more
Showing 1–25 of 25.