Quick Takeaways
- CSTM - CONSTELLIUM SE has 23 insiders with reported activity on this page.
- Net insider value flow over the last year: -$5,774,466.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders: CSTM, CSTM
Insider Transactions Reported by 23 Insiders of CONSTELLIUM SE
- Symbol
- CSTM on NYSE
- Location
- Paris, France
What Changed
- Buy value: $41,242; sell value: $5,815,707.
- Net share flow: -222,878.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$5,774,466.
Buys
$41,242
Shares: 1,665
Insiders: 1
Sells
$5,815,708
Shares: 224,543
Insiders: 9
Net
-$5,774,466
Shares: -222,878
Insiders: -8
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 1,665 | 224,543 | $41,242 | $5,815,708 | -$5,774,466 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
CONSTELLIUM SE executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ingrid Joerg | CEO, Director | $9,200,296 | -$119,364 | -1.3% | Mixed | 12 Mar 2026 |
| Ludovic Piquier | SVP Manuf Excellence & CTO | $5,453,761 | Mixed | 12 Mar 2026 | ||
| Philip Ryan Jurkovic | Svp & Chro | $4,964,364 | -$773,513 | -13% | Mixed | 12 Mar 2026 |
| Jack Q. Guo | Evp & Cfo | $4,731,485 | -$1,079,219 | -19% | Mixed | 12 Mar 2026 |
| Philippe Hoffmann | President, A&T | $4,362,617 | -$2,238,013 | -34% | Mixed | 12 Mar 2026 |
| Martha Brooks | Director | $3,195,171 | Mixed | 01 Jan 2026 | ||
| Nicolas Brun | SVP PA, Comm & Sust | $2,955,973 | -$436,684 | -13% | Mixed | 12 Mar 2026 |
| Stephane Corre | President, AS&I | $1,624,873 | -$195,167 | -11% | Mixed | 12 Mar 2026 |
| Jean-Christophe Deslarzes | Director | $1,008,139 | +$41,242 | +4.3% | Filing P/S | 02 Mar 2026 |
| Niklaus Schild | Svp Cio & Cdo | $869,656 | Mixed | 12 Mar 2026 | ||
| Michiel Brandjes | Director | $784,680 | Mixed | 01 Jan 2026 | ||
| Matthew B. Perkins | President, P&ARP | $746,273 | Mixed | 12 Mar 2026 | ||
| Marcus Becker | Svp Cpo | $681,820 | -$677,963 | -50% | Filing P/S | 16 Mar 2026 |
| Isabelle Boccon-Gibod | Director | $592,710 | -$257,700 | -30% | Filing P/S | 26 Feb 2026 |
| Stephen Charles Walters | SVP GC & Secretary | $563,277 | -$38,085 | -6.3% | Mixed | 12 Mar 2026 |
| Lori A. Walker | Director | $547,676 | Mixed | 01 Jan 2026 | ||
| John Ormerod | Director | $496,053 | Mixed | 01 Jan 2026 | ||
| Martin Jarrett | SVP Chief Innovation Officer | $493,836 | Median | 01 Apr 2026 | ||
| Jean-Philippe Puig | Director | $356,124 | Mixed | 01 Jan 2026 | ||
| Bradley Lee Soultz | Director | $188,625 | Mixed | 01 Jan 2026 | ||
| Wiebke Weiler | Director | $14,043 | Mixed | 12 Mar 2026 | ||
| Jean-Francois Verdier | Director | $618 | Mixed | 01 Jan 2026 | ||
| Emmanuel Blot | Director | $0 | Mixed | 01 Jan 2026 |
Top shareholders of CONSTELLIUM SE (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
5.8%
from 13D/G
|
13,730,294
|
$258,816,041 | — | 31 Dec 2025 | |
| Bpifrance SA |
13F
|
Company |
9.2%
|
12,593,903
|
$237,395,072 | — | 31 Dec 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
7.7%
|
10,569,283
|
$199,232,041 | $0 | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
|
Company |
5.3%
from 13D/G
|
6,269,869
|
$118,187,031 | — | 31 Dec 2025 | |
| Encompass Capital Advisors LLC |
13F
|
Company |
3.4%
|
4,657,915
|
$87,801,698 | — | 31 Dec 2025 | |
| T. Rowe Price Investment Management, Inc. |
13D/G
13F
|
Company |
4.5%
|
6,274,993
|
$85,590,905 | -$109,593,690 | 31 Aug 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
3%
|
4,054,982
|
$76,436,410 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2.7%
|
3,728,118
|
$70,275,043 | — | 31 Dec 2025 | |
| Nut Tree Capital Management, LP |
13F
|
Company |
2.3%
|
3,225,000
|
$60,791,250 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
2.2%
|
3,055,291
|
$57,592,236 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
2.1%
|
2,840,961
|
$53,552,114 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
1.9%
|
2,660,518
|
$50,150,764 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
1.5%
|
2,089,412
|
$39,385,416 | — | 31 Dec 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
1.4%
|
1,944,239
|
$36,649,000 | — | 31 Dec 2025 | |
| BRIGHTLINE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.3%
|
1,842,000
|
$34,721,700 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
1.3%
|
1,811,344
|
$34,143,834 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.3%
|
1,766,503
|
$33,298,578 | — | 31 Dec 2025 | |
| SCOPUS ASSET MANAGEMENT, L.P. |
13F
|
Company |
—
class O/S missing
|
1,731,708
|
$32,642,696 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.2%
|
1,631,574
|
$30,751,882 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1%
|
1,367,485
|
$25,777,092 | — | 31 Dec 2025 | |
| Soapstone Management L.P. |
13F
|
Company |
0.98%
|
1,350,000
|
$25,447,500 | — | 31 Dec 2025 | |
| BEACONLIGHT CAPITAL, LLC |
13F
|
Company |
0.98%
|
1,339,934
|
$25,257,756 | — | 31 Dec 2025 | |
| CAPSTONE INVESTMENT ADVISORS, LLC |
13F
|
Company |
0.87%
|
1,194,936
|
$22,524,544 | — | 31 Dec 2025 | |
| Engineers Gate Manager LP |
13F
|
Company |
0.76%
|
1,049,218
|
$19,777,759 | — | 31 Dec 2025 | |
| COOPER CREEK PARTNERS MANAGEMENT LLC |
13F
|
Company |
0.73%
|
999,209
|
$18,835,000 | — | 31 Dec 2025 | |
| Kailix Advisors LLC |
13F
|
Company |
0.71%
|
978,057
|
$18,436,374 | — | 31 Dec 2025 | |
| SG Americas Securities, LLC |
13F
|
Company |
0.71%
|
974,735
|
$18,374,000 | — | 31 Dec 2025 | |
| Cannell & Spears LLC |
13F
|
Company |
0.7%
|
967,047
|
$18,228,836 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.69%
|
941,854
|
$17,753,947 | — | 31 Dec 2025 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.68%
|
939,231
|
$17,704,504 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.63%
|
869,612
|
$16,392,185 | — | 31 Dec 2025 | |
| MOORE CAPITAL MANAGEMENT, LP |
13F
|
Company |
0.63%
|
857,954
|
$16,172,433 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.59%
|
808,857
|
$15,246,954 | — | 31 Dec 2025 | |
| SummitTX Capital, L.P. |
13F
|
Company |
0.5%
|
688,573
|
$12,979,601 | — | 31 Dec 2025 | |
| Mountaineer Partners Management, LLC |
13F
|
Company |
0.5%
|
681,464
|
$12,845,596 | — | 31 Dec 2025 | |
| Empowered Funds, LLC |
13F
|
Company |
0.49%
|
671,222
|
$12,652,534 | — | 31 Dec 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.45%
|
621,183
|
$11,709,300 | — | 31 Dec 2025 | |
| ArrowMark Colorado Holdings LLC |
13F
|
Company |
0.44%
|
603,379
|
$11,373,694 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.4%
|
554,900
|
$10,459,866 | — | 31 Dec 2025 | |
| BW Gestao de Investimentos Ltda. |
13F
|
Company |
0.4%
|
546,270
|
$10,297,190 | — | 31 Dec 2025 | |
| Boston Partners |
13F
|
Company |
0.39%
|
542,004
|
$10,216,780 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.37%
|
514,609
|
$9,700,380 | — | 31 Dec 2025 | |
| WHITEBOX ADVISORS LLC |
13F
|
Company |
0.36%
|
499,660
|
$9,418,591 | — | 31 Dec 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.36%
|
496,715
|
$9,363,078 | — | 31 Dec 2025 | |
| Ingrid Joerg |
3/4/5
|
CEO, Director |
0.3%
|
409,448
|
$9,200,296 | -$119,364 | 12 Mar 2026 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.34%
|
470,813
|
$8,874,825 | — | 31 Dec 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.33%
|
455,858
|
$8,593,000 | — | 31 Dec 2025 | |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.33%
|
448,180
|
$8,448,193 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.33%
|
447,767
|
$8,440,408 | — | 31 Dec 2025 | |
| DANSKE BANK A/S |
13F
|
Company |
0.32%
|
437,099
|
$8,239,316 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for CONSTELLIUM SE
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Marcus Becker | CSTM | Ordinary shares | Sale | -26.9% | $250,900 | $25.09 | -10,000 | 27,175 | 16 Mar 2026 | Direct |
| Stephen Charles Walters | CSTM | Ordinary shares | Award | 30.3% | 5,834 | 25,068 | 12 Mar 2026 | Direct | ||
| Wiebke Weiler | CSTM | Ordinary shares | Award | 625 | 625 | 12 Mar 2026 | Direct | |||
| Nicolas Brun | CSTM | Ordinary shares | Award | 3.44% | 4,376 | 131,552 | 12 Mar 2026 | Direct | ||
| Philip Ryan Jurkovic | CSTM | Ordinary shares | Award | 4.85% | 10,210 | 220,933 | 12 Mar 2026 | Direct | ||
| Ludovic Piquier | CSTM | Ordinary shares | Award | 2.31% | 5,469 | 242,713 | 12 Mar 2026 | Direct | ||
| Marcus Becker | CSTM | Ordinary shares | Award | 11.8% | 3,938 | 37,175 | 12 Mar 2026 | Direct | ||
| Ingrid Joerg | CSTM | Ordinary shares | Award | 8.29% | 31,358 | 409,448 | 12 Mar 2026 | Direct | ||
| Matthew B. Perkins | CSTM | Ordinary shares | Award | 44.4% | 10,210 | 33,212 | 12 Mar 2026 | Direct | ||
| Niklaus Schild | CSTM | Ordinary shares | Award | 9.49% | 3,355 | 38,703 | 12 Mar 2026 | Direct | ||
| Philippe Hoffmann | CSTM | Ordinary shares | Award | 6.61% | 12,033 | 194,153 | 12 Mar 2026 | Direct | ||
| Stephane Corre | CSTM | Ordinary shares | Award | 11.2% | 7,293 | 72,313 | 12 Mar 2026 | Direct | ||
| Jack Q. Guo | CSTM | Ordinary shares | Award | 10.3% | 19,690 | 210,569 | 12 Mar 2026 | Direct | ||
| Stephane Corre | CSTM | Ordinary shares | Sale | -2.25% | $38,835 | $25.89 | -1,500 | 65,020 | 10 Mar 2026 | Direct |
| Philippe Hoffmann | CSTM | Ordinary shares | Sale | -2.53% | $122,313 | $25.87 | -4,728 | 182,120 | 10 Mar 2026 | Direct |
| Marcus Becker | CSTM | Ordinary shares | Sale | -3.24% | $28,793 | $25.87 | -1,113 | 33,237 | 10 Mar 2026 | Direct |
| Ingrid Joerg | CSTM | Ordinary shares | Sale | -1.21% | $119,364 | $25.87 | -4,614 | 378,090 | 10 Mar 2026 | Direct |
| Jack Q. Guo | CSTM | Ordinary shares | Sale | -17.9% | $1,079,219 | $25.87 | -41,717 | 190,879 | 10 Mar 2026 | Direct |
| Philip Ryan Jurkovic | CSTM | Ordinary shares | Sale | -12.4% | $773,513 | $25.87 | -29,900 | 210,723 | 10 Mar 2026 | Direct |
| Stephane Corre | CSTM | Ordinary shares | Purchase | 13.7% | 8,026 | 66,520 | 09 Mar 2026 | Direct | ||
| Philippe Hoffmann | CSTM | Ordinary shares | Purchase | 61.5% | 71,132 | 186,848 | 09 Mar 2026 | Direct | ||
| Marcus Becker | CSTM | Ordinary shares | Purchase | 73.8% | 14,592 | 34,350 | 09 Mar 2026 | Direct | ||
| Ingrid Joerg | CSTM | Ordinary shares | Award | 22.8% | 71,132 | 382,704 | 09 Mar 2026 | Direct | ||
| Jack Q. Guo | CSTM | Ordinary shares | Award | 48.4% | 75,874 | 232,596 | 09 Mar 2026 | Direct | ||
| Philip Ryan Jurkovic | CSTM | Ordinary shares | Award | 32.7% | 59,276 | 240,623 | 09 Mar 2026 | Direct | ||
| Ludovic Piquier | CSTM | Ordinary shares | Award | 14.7% | 30,350 | 237,244 | 09 Mar 2026 | Direct | ||
| Niklaus Schild | CSTM | Ordinary shares | Award | 16.9% | 5,106 | 35,348 | 09 Mar 2026 | Direct | ||
| Nicolas Brun | CSTM | Ordinary shares | Award | 22.9% | 23,710 | 127,176 | 09 Mar 2026 | Direct | ||
| Nicolas Brun | CSTM | Ordinary shares | Sale | -14.6% | $436,684 | $24.67 | -17,701 | 103,466 | 09 Mar 2026 | Direct |
| Philippe Hoffmann | CSTM | Ordinary shares | Sale | -59.1% | $2,115,700 | $26.45 | -80,000 | 55,425 | 04 Mar 2026 | Direct |
| Jean-Christophe Deslarzes | CSTM | Ordinary shares | Purchase | 4.27% | $41,242 | $24.77 | 1,665 | 40,700 | 02 Mar 2026 | Direct |
| Stephane Corre | CSTM | Ordinary shares | Sale | -6.32% | $74,070 | $24.69 | -3,000 | 44,444 | 27 Feb 2026 | Direct |
| Isabelle Boccon-Gibod | CSTM | Ordinary shares | Sale | -30.3% | $257,700 | $25.77 | -10,000 | 23,000 | 26 Feb 2026 | Direct |
| Stephane Corre | CSTM | Ordinary shares | Sale | -6.32% | $82,262 | $25.71 | -3,200 | 47,444 | 25 Feb 2026 | Direct |
| Stephen Charles Walters | CSTM | Ordinary shares | Sale | -100% | $38,085 | $25.39 | -1,500 | 0 | 23 Feb 2026 | Direct |
| Marcus Becker | CSTM | Ordinary shares | Sale | -100% | $398,270 | $25.58 | -15,570 | 0 | 20 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.