Constellium SE (CSTM) Insider Trading

Last 12 months

Insiders bought $208k and sold $12.2M on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. President, A&T Philippe Hoffmann sold $2.12M on Mar 4, 59% of their stake, outside a plan.

Net open-market

−$12M

7 buys · 25 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

5 / 13

executives and directors

Last open-market buy

Aug 2026

Aug 3, 2026

Get an email when CSTM's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 3	Jean-Christophe Deslarzes Director	Bought	1,490	$27.24	$41k	3.5%	Form 4
Jun 4	John Ormerod Director	SoldNo plan	8,000	$35.01	$280k	24%	Form 4
May 28	Marcus Becker SVP CPO	SoldNo plan	10,391	$34.93	$363k	38%	Form 4
May 14	Martin Jarrett SVP Chief Innovation Officer	SoldNo plan	4,716	$33.46	$158k	23%	Form 4
May 14	Bradley Lee Soultz Director	Bought	2,500	$33.84	$85k	20%	Form 4
May 12	Ludovic Piquier SVP Manuf Excellence & CTO	SoldNo plan	1,000	$33.57	$34k	0.4%	Form 4
May 11	Nicolas Brun SVP PA, Comm & Sust	SoldNo plan	26,661	$33.85	$902k	20%	Form 4
May 8	Stephane Corre President, AS&I	SoldNo plan	5,000	$33.52	$168k	7.4%	Form 4
May 5	Jack Q. Guo EVP & CFO	SoldNo plan	25,201	$32.62	$822k	12%	Form 4
May 5	Michiel Brandjes Director	SoldNo plan	10,400	$31.25	$325k	20%	Form 4
May 1	Philippe Hoffmann President, A&T	SoldNo plan	50,000	$31.92	$1.6M	26%	Form 4
May 1	Philip Ryan Jurkovic SVP & CHRO	SoldNo plan	48,784	$32.01	$1.56M	22%	Form 4
May 1	Stephane Corre President, AS&I	SoldNo plan	5,000	$32.04	$160k	6.9%	Form 4
May 1	Jean-Christophe Deslarzes Director	Bought	1,325	$31.13	$41k	3.3%	Form 4
Mar 16	Marcus Becker SVP CPO	SoldNo plan	10,000	$25.09	$251k	27%	Form 4
Mar 10	Stephane Corre President, AS&I	SoldNo plan	1,500	$25.89	$39k	2.3%	Form 4
Mar 10	Ingrid Joerg CEO	SoldNo plan	4,614	$25.87	$119k	1.2%	Form 4
Mar 10	Philippe Hoffmann President, A&T	SoldNo plan	4,728	$25.87	$122k	2.5%	Form 4
Mar 10	Marcus Becker SVP CPO	SoldNo plan	1,113	$25.87	$29k	3.2%	Form 4
Mar 10	Jack Q. Guo EVP & CFO	SoldNo plan	41,717	$25.87	$1.08M	18%	Form 4
Mar 10	Philip Ryan Jurkovic SVP & CHRO	SoldNo plan	29,900	$25.87	$774k	12%	Form 4
Mar 9	Stephane Corre President, AS&I	Bought	8,026	—	—	14%	Form 4
Mar 9	Nicolas Brun SVP PA, Comm & Sust	SoldNo plan	17,701	$24.67	$437k	12%	Form 4
Mar 9	Philippe Hoffmann President, A&T	Bought	71,132	—	—	64%	Form 4
Mar 9	Marcus Becker SVP CPO	Bought	14,592	—	—	78%	Form 4
Mar 4	Philippe Hoffmann President, A&T	SoldNo plan 2 parts	80,000	$26.45 average	$2.12M	59%	Form 4
Mar 2	Jean-Christophe Deslarzes Director	Bought	1,665	$24.77	$41k	4.3%	Form 4
Feb 27	Stephane Corre President, AS&I	SoldNo plan	3,000	$24.69	$74k	6.3%	Form 4
Feb 26	Isabelle Boccon-Gibod Director	SoldNo plan	10,000	$25.77	$258k	30%	Form 4
Feb 25	Stephane Corre President, AS&I	SoldNo plan	3,200	$25.71	$82k	6.3%	Form 4
Feb 23	Stephen Charles Walters SVP GC & Secretary	SoldNo plan	1,500	$25.39	$38k	100%	Form 4
Feb 20	Marcus Becker SVP CPO	SoldNo plan	15,570	$25.58	$398k	100%	Form 4

Aug 3
Jean-Christophe Deslarzes
Director · bought 1,490 at $27.24
$41k
3.5% of stake
Jun 4No plan
John Ormerod
Director · sold 8,000 at $35.01
$280k
24% of stake
May 28No plan
Marcus Becker
SVP CPO · sold 10,391 at $34.93
$363k
38% of stake
May 14No plan
Martin Jarrett
SVP Chief Innovation Officer · sold 4,716 at $33.46
$158k
23% of stake
May 14
Bradley Lee Soultz
Director · bought 2,500 at $33.84
$85k
20% of stake
May 12No plan
Ludovic Piquier
SVP Manuf Excellence & CTO · sold 1,000 at $33.57
$34k
0.4% of stake
May 11No plan
Nicolas Brun
SVP PA, Comm & Sust · sold 26,661 at $33.85
$902k
20% of stake
May 8No plan
Stephane Corre
President, AS&I · sold 5,000 at $33.52
$168k
7.4% of stake
May 5No plan
Jack Q. Guo
EVP & CFO · sold 25,201 at $32.62
$822k
12% of stake
May 5No plan
Michiel Brandjes
Director · sold 10,400 at $31.25
$325k
20% of stake
May 1No plan
Philippe Hoffmann
President, A&T · sold 50,000 at $31.92
$1.6M
26% of stake
May 1No plan
Philip Ryan Jurkovic
SVP & CHRO · sold 48,784 at $32.01
$1.56M
22% of stake
May 1No plan
Stephane Corre
President, AS&I · sold 5,000 at $32.04
$160k
6.9% of stake
May 1
Jean-Christophe Deslarzes
Director · bought 1,325 at $31.13
$41k
3.3% of stake
Mar 16No plan
Marcus Becker
SVP CPO · sold 10,000 at $25.09
$251k
27% of stake
Mar 10No plan
Stephane Corre
President, AS&I · sold 1,500 at $25.89
$39k
2.3% of stake
Mar 10No plan
Ingrid Joerg
CEO · sold 4,614 at $25.87
$119k
1.2% of stake
Mar 10No plan
Philippe Hoffmann
President, A&T · sold 4,728 at $25.87
$122k
2.5% of stake
Mar 10No plan
Marcus Becker
SVP CPO · sold 1,113 at $25.87
$29k
3.2% of stake
Mar 10No plan
Jack Q. Guo
EVP & CFO · sold 41,717 at $25.87
$1.08M
18% of stake
Mar 10No plan
Philip Ryan Jurkovic
SVP & CHRO · sold 29,900 at $25.87
$774k
12% of stake
Mar 9
Stephane Corre
President, AS&I · bought 8,026
—
14% of stake
Mar 9No plan
Nicolas Brun
SVP PA, Comm & Sust · sold 17,701 at $24.67
$437k
12% of stake
Mar 9
Philippe Hoffmann
President, A&T · bought 71,132
—
64% of stake
Mar 9
Marcus Becker
SVP CPO · bought 14,592
—
78% of stake
Mar 4No plan
Philippe Hoffmann
President, A&T · sold 80,000 at avg $26.45
$2.12M
59% of stake
Mar 2
Jean-Christophe Deslarzes
Director · bought 1,665 at $24.77
$41k
4.3% of stake
Feb 27No plan
Stephane Corre
President, AS&I · sold 3,000 at $24.69
$74k
6.3% of stake
Feb 26No plan
Isabelle Boccon-Gibod
Director · sold 10,000 at $25.77
$258k
30% of stake
Feb 25No plan
Stephane Corre
President, AS&I · sold 3,200 at $25.71
$82k
6.3% of stake
Feb 23No plan
Stephen Charles Walters
SVP GC & Secretary · sold 1,500 at $25.39
$38k
100% of stake
Feb 20No plan
Marcus Becker
SVP CPO · sold 15,570 at $25.58
$398k
100% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch CSTM, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in CSTM's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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