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$CSTM

$35.40 -$0.46 (1.28%)

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Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

Ingrid Joerg

409,448 shares

Net: +97,876 B/S: 22.21

Ludovic Piquier

242,713 shares

Net: +35,819 B/S: ∞

Jack Q. Guo

210,569 shares

Net: +53,847 B/S: 2.29

Philippe Hoffmann

194,153 shares

Net: +28,437 B/S: 1.52

Philip Ryan Jurkovic

172,149 shares

Net: -9,198 B/S: 0.88

Nicolas Brun

131,552 shares

Net: +10,385 B/S: 1.59

Stephane Corre

67,313 shares

Net: +2,619 B/S: 1.21

Jean-Christophe Deslarzes

42,025 shares

Net: +2,990 B/S: ∞

Niklaus Schild

38,703 shares

Net: +8,461 B/S: ∞

Matthew B. Perkins

33,212 shares

Net: +10,210 B/S: ∞

Marcus Becker

27,175 shares

Net: -8,153 B/S: 0.69

Stephen Charles Walters

25,068 shares

Net: +4,334 B/S: 3.89

Isabelle Boccon-Gibod

23,000 shares

Net: -10,000 B/S: -

Wiebke Weiler

625 shares

Net: +625 B/S: ∞

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Ingrid Joerg	409,448	+97,876	22.21
Ludovic Piquier	242,713	+35,819	∞
Jack Q. Guo	210,569	+53,847	2.29
Philippe Hoffmann	194,153	+28,437	1.52
Philip Ryan Jurkovic	172,149	-9,198	0.88
Nicolas Brun	131,552	+10,385	1.59
Stephane Corre	67,313	+2,619	1.21
Jean-Christophe Deslarzes	42,025	+2,990	∞
Niklaus Schild	38,703	+8,461	∞
Matthew B. Perkins	33,212	+10,210	∞
Marcus Becker	27,175	-8,153	0.69
Stephen Charles Walters	25,068	+4,334	3.89
Isabelle Boccon-Gibod	23,000	-10,000	-
Wiebke Weiler	625	+625	∞

Individual Transactions

May 01, 2026

Jean-Christophe Deslarzes

Open Market Purchase

Change: +1,325

Price: $31.13

Shares: 42,025

Value: +$41,247

Stephane Corre

Open Market Sale

Change: -5,000

Price: $32.04

Shares: 67,313

Value: -$160,200

Philip Ryan Jurkovic

Open Market Sale

Change: -48,784

Price: $32.01

Shares: 172,149

Value: -$1,561,575

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jean-Christophe Deslarzes	May 01	Open Market Purchase (P) Market Purchase	42,025	+1,325	$31.13	+$41,247
Stephane Corre	May 04	Open Market Sale (S) Market Sale	67,313	-5,000	$32.04	-$160,200
Philip Ryan Jurkovic	May 04	Open Market Sale (S) Market Sale	172,149	-48,784	$32.01	-$1,561,575

March 16, 2026

Marcus Becker

Open Market Sale

Change: -10,000

Price: $25.09

Shares: 27,175

Value: -$250,900

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Marcus Becker	Mar 17	Open Market Sale (S) Market Sale	27,175	-10,000	$25.09	-$250,900

March 12, 2026

Jack Q. Guo

Grant/Award Acquisition

Change: +19,690

Price: $0.00

Shares: 210,569

Value: +$0

Stephane Corre

Grant/Award Acquisition

Change: +7,293

Price: $0.00

Shares: 72,313

Value: +$0

Philippe Hoffmann

Grant/Award Acquisition

Change: +12,033

Price: $0.00

Shares: 194,153

Value: +$0

Niklaus Schild

Grant/Award Acquisition

Change: +3,355

Price: $0.00

Shares: 38,703

Value: +$0

Matthew B. Perkins

Grant/Award Acquisition

Change: +10,210

Price: $0.00

Shares: 33,212

Value: +$0

Ingrid Joerg

Grant/Award Acquisition

Change: +31,358

Price: $0.00

Shares: 409,448

Value: +$0

Marcus Becker

Grant/Award Acquisition

Change: +3,938

Price: $0.00

Shares: 37,175

Value: +$0

Ludovic Piquier

Grant/Award Acquisition

Change: +5,469

Price: $0.00

Shares: 242,713

Value: +$0

Philip Ryan Jurkovic

Grant/Award Acquisition

Change: +10,210

Price: $0.00

Shares: 220,933

Value: +$0

Nicolas Brun

Grant/Award Acquisition

Change: +4,376

Price: $0.00

Shares: 131,552

Value: +$0

Wiebke Weiler

Grant/Award Acquisition

Change: +625

Price: $0.00

Shares: 625

Value: +$0

Stephen Charles Walters

Grant/Award Acquisition

Change: +5,834

Price: $0.00

Shares: 25,068

Value: +$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Jack Q. Guo	Mar 16	Grant/Award Acquisition (A) Compensation/Award	210,569	+19,690	$0.00	+$0
Stephane Corre	Mar 16	Grant/Award Acquisition (A) Compensation/Award	72,313	+7,293	$0.00	+$0
Philippe Hoffmann	Mar 16	Grant/Award Acquisition (A) Compensation/Award	194,153	+12,033	$0.00	+$0
Niklaus Schild	Mar 16	Grant/Award Acquisition (A) Compensation/Award	38,703	+3,355	$0.00	+$0
Matthew B. Perkins	Mar 16	Grant/Award Acquisition (A) Compensation/Award	33,212	+10,210	$0.00	+$0
Ingrid Joerg	Mar 16	Grant/Award Acquisition (A) Compensation/Award	409,448	+31,358	$0.00	+$0
Marcus Becker	Mar 16	Grant/Award Acquisition (A) Compensation/Award	37,175	+3,938	$0.00	+$0
Ludovic Piquier	Mar 16	Grant/Award Acquisition (A) Compensation/Award	242,713	+5,469	$0.00	+$0
Philip Ryan Jurkovic	Mar 16	Grant/Award Acquisition (A) Compensation/Award	220,933	+10,210	$0.00	+$0
Nicolas Brun	Mar 16	Grant/Award Acquisition (A) Compensation/Award	131,552	+4,376	$0.00	+$0
Wiebke Weiler	Mar 16	Grant/Award Acquisition (A) Compensation/Award	625	+625	$0.00	+$0
Stephen Charles Walters	Mar 16	Grant/Award Acquisition (A) Compensation/Award	25,068	+5,834	$0.00	+$0

March 10, 2026

Philip Ryan Jurkovic

Open Market Sale

Change: -29,900

Price: $25.87

Shares: 210,723

Value: -$773,513

Jack Q. Guo

Open Market Sale

Change: -41,717

Price: $25.87

Shares: 190,879

Value: -$1,079,218

Marcus Becker

Open Market Sale

Change: -1,113

Price: $25.87

Shares: 33,237

Value: -$28,793

Philippe Hoffmann

Open Market Sale

Change: -4,728

Price: $25.87

Shares: 182,120

Value: -$122,313

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Philip Ryan Jurkovic	Mar 11	Open Market Sale (S) Market Sale	210,723	-29,900	$25.87	-$773,513
Jack Q. Guo	Mar 11	Open Market Sale (S) Market Sale	190,879	-41,717	$25.87	-$1,079,218
Marcus Becker	Mar 11	Open Market Sale (S) Market Sale	33,237	-1,113	$25.87	-$28,793
Philippe Hoffmann	Mar 11	Open Market Sale (S) Market Sale	182,120	-4,728	$25.87	-$122,313