Constellium SE (CSTM)

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Over the last 90 days, Constellium SE has seen significant net selling activity by insiders, totaling over $10.5 million. Executives were responsible for the majority of this net selling. Notable large proposed sales were made by Bpifrance Participations SA and Marcus Becker. The stock has performed strongly, with a 36.4% increase in the last 90 days.

Top insider sells (90, 60, 30, 7d)

Top cluster sells (90, 60, 30d)

Top executive sells (90, 60, 30, 7d)

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Top insider sells

Top cluster sells

Top executive sells

Stock chart

Ticker: CSTM Exchange: NYS

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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

Top insiders

Company data & Insiders

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Trades

Becker Marcus

SVP CPO

1 sale — total 100,000 USD

Sale 28 May 2026

Value US$4,905,434.99 | Price 92.64 | Shares 1,488

Marcus Becker

Affiliate

1 sale — total 100,000 USD

Proposed sale 28 May 2026

Value US$629,771.57 | Price 17.97 | Shares 8,213

Bpifrance Participations SA

May be deemed an affiliate

2 sales — total 200,000 USD

Proposed sale 26 May 2026

Value US$100,000.00 | Price 33.24 | Shares 1,000

Proposed sale 26 May 2026

Value US$100,000.00 | Price 33.24 | Shares 1,000

Soultz Bradley Lee

1 purchase — total 100,000 USD

Buy 14 May 2026

Value US$100,000.00 | Price 33.84 | Shares 1,000

Jarrett Martin

SVP Chief Innovation Officer

1 sale — total 100,000 USD

Sale 14 May 2026

Value US$100,000.00 | Price 33.46 | Shares 1,000

Martin Roy Jarrett

Affiliate

1 sale — total 100,000 USD

Proposed sale 14 May 2026

Value US$100,000.00 | Price 33.46 | Shares 1,000

Piquier Ludovic

SVP Manuf Excellence & CTO

1 sale — total 100,000 USD

Sale 12 May 2026

Value US$100,000.00 | Price 33.57 | Shares 1,000

Brun Nicolas

SVP PA, Comm & Sust

1 sale — total 902,475 USD

Sale 11 May 2026

Value US$902,474.85 | Price 33.85 | Shares 26,661

Nicolas Brun

Affiliate

1 sale — total 902,559 USD

Proposed sale 11 May 2026

Value US$902,558.99 | Price 33.85 | Shares 26,661

Corre Stephane

President, AS&I

1 sale — total 167,600 USD

Sale 8 May 2026

Value US$167,600.00 | Price 33.52 | Shares 5,000

Stephane Corre

Affiliate

1 sale — total 167,591 USD

Proposed sale 8 May 2026

Value US$167,590.60 | Price 33.52 | Shares 5,000

Brandjes Michiel

2 sales — total 661,440 USD

Sale 5 May 2026

Value US$325,000.00 | Price 31.25 | Shares 10,400

Proposed sale 5 May 2026

Value US$336,440.00 | Price 32.35 | Shares 10,400

Guo Jack Q.

EVP & CFO

1 sale — total 822,057 USD

Sale 5 May 2026

Value US$822,056.62 | Price 32.62 | Shares 25,201

JACK GUO

Officer

1 sale — total 822,309 USD

Proposed sale 5 May 2026

Value US$822,308.63 | Price 32.63 | Shares 25,201

Hoffmann Philippe

President, A&T

1 sale — total 1,596,000 USD

Sale 1 May 2026

Value US$1,596,000.00 | Price 31.92 | Shares 50,000

Corre Stephane

President, AS&I

1 sale — total 160,200 USD

Sale 1 May 2026

Value US$160,200.00 | Price 32.04 | Shares 5,000

Jurkovic Philip Ryan

SVP & CHRO

1 sale — total 1,561,576 USD

Sale 1 May 2026

Value US$1,561,575.84 | Price 32.01 | Shares 48,784

Stephane Corre

Affiliate

1 sale — total 160,208 USD

Proposed sale 1 May 2026

Value US$160,207.94 | Price 32.04 | Shares 5,000

Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	B/S Transaction type	Insider and/or position	Nb. shares Price Value	Number of shares	Price	Value
2026-06-01	2026-05-28	S Sale	Becker Marcus SVP CPO Officer	1,488 -1.7% 92.64 US$4,905,435	1,488 -1.7%	92.64	US$4,905,435
2026-05-28	2026-05-28	PrS Proposed sale	Marcus Becker Affiliate	8,213 17.97 US$629,772	8,213	17.97	US$629,772
2026-05-26	2026-05-26	PrS Proposed sale	Bpifrance Participations SA May be deemed an affiliate	3,945 373.82 US$2,820,696	3,945	373.82	US$2,820,696
2026-05-26	2026-05-26	PrS Proposed sale	Bpifrance Participations SA May be deemed an affiliate	1,000 33.24 US$100,000	1,000	33.24	US$100,000
2026-05-18	2026-05-14	B Purchase	2.6 Soultz Bradley Lee Non-Executive Director	1,000 +inf% 33.84 US$100,000	1,000 +inf%	33.84	US$100,000
2026-05-18	2026-05-14	S Sale	Jarrett Martin SVP Chief Innovation Officer Officer	1,000 -23.5% 33.46 US$100,000	1,000 -23.5%	33.46	US$100,000
2026-05-14	2026-05-14	PrS Proposed sale	Martin Roy Jarrett Affiliate	1,000 33.46 US$100,000	1,000	33.46	US$100,000
2026-05-13	2026-05-12	S Sale	Piquier Ludovic SVP Manuf Excellence & CTO Officer	1,000 -0.4% 33.57 US$100,000	1,000 -0.4%	33.57	US$100,000
2026-05-12	2026-05-11	S Sale	Brun Nicolas SVP PA, Comm & Sust Officer	26,661 -20.3% 33.85 US$902,475	26,661 -20.3%	33.85	US$902,475
2026-05-11	2026-05-11	PrS Proposed sale	Nicolas Brun Affiliate	26,661 33.85 US$902,559	26,661	33.85	US$902,559
2026-05-12	2026-05-08	S Sale	Corre Stephane President, AS&I Officer	5,000 -7.4% 33.52 US$167,600	5,000 -7.4%	33.52	US$167,600
2026-05-08	2026-05-08	PrS Proposed sale	Stephane Corre Affiliate	5,000 33.52 US$167,591	5,000	33.52	US$167,591
2026-05-07	2026-05-05	S Sale	Brandjes Michiel Non-Executive Director	10,400 -20.0% 31.25 US$325,000	10,400 -20.0%	31.25	US$325,000
2026-05-07	2026-05-05	PrS Proposed sale	Brandjes Michiel Director Non-Executive Director	10,400 32.35 US$336,440	10,400	32.35	US$336,440
2026-05-07	2026-05-05	S Sale	Guo Jack Q. EVP & CFO Officer	25,201 -12.0% 32.62 US$822,057	25,201 -12.0%	32.62	US$822,057
2026-05-05	2026-05-05	PrS Proposed sale	JACK GUO Officer Officer	25,201 32.63 US$822,309	25,201	32.63	US$822,309
2026-05-05	2026-05-01	S Sale	Hoffmann Philippe President, A&T Officer	50,000 -25.8% 31.92 US$1,596,000	50,000 -25.8%	31.92	US$1,596,000
2026-05-04	2026-05-01	S Sale	Corre Stephane President, AS&I Officer	5,000 -6.9% 32.04 US$160,200	5,000 -6.9%	32.04	US$160,200
2026-05-04	2026-05-01	S Sale	Jurkovic Philip Ryan SVP & CHRO Officer	48,784 -22.1% 32.01 US$1,561,576	48,784 -22.1%	32.01	US$1,561,576
2026-05-01	2026-05-01	PrS Proposed sale	Stephane Corre Affiliate	5,000 32.04 US$160,208	5,000	32.04	US$160,208