Company · Ownership research

CONSTELLIUM SE CSTM

CIK 0001563411

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 33 rows; the complete set is available through the API.

Insider filings on file run through Nov 3, 2026.

Insider purchases & sales

Purchased: $249.81K
Sold: $12.19M

Nov 1, 2023 – Nov 3, 2026
Available records · partial months are marked ·

202610 of 30 preview events · 33 available in 2026

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 2, 2026	Deslarzes Jean-Christophe Director	Purchase	$42.14K 1,800 shares bought	4.14% added Direct holding	▾
Aug 3, 2026	Deslarzes Jean-Christophe Director	Purchase	$40.59K 1,490 shares bought	3.55% added Direct holding	▾
Jun 4, 2026	Ormerod John Director	Sale	$280.08K 8,000 shares sold	24.34% sold Direct holding	▾
May 28, 2026	Becker Marcus SVP CPO	Sale	$362.96K 10,391 shares sold	38.24% sold Direct holding	▾
May 14, 2026	Jarrett Martin SVP Chief Innovation Officer	Sale	$157.80K 4,716 shares sold	23.47% sold Direct holding	▾
May 14, 2026	Soultz Bradley Lee Director	Purchase	$84.60K 2,500 shares bought	New holding Trust holding	▾
May 12, 2026	Piquier Ludovic SVP Manuf Excellence & CTO	Sale	$33.57K 1,000 shares sold	0.41% sold Direct holding	▾
May 11, 2026	Brun Nicolas SVP PA, Comm & Sust	Sale	$902.47K 26,661 shares sold	20.27% sold Direct holding	▾
May 8, 2026	Corre Stephane President, AS&I	Sale	$167.60K 5,000 shares sold	7.43% sold Direct holding	▾
May 5, 2026	Guo Jack Q. EVP & CFO	Sale	$822.06K 25,201 shares sold	11.97% sold Direct holding	▾

Showing 30 / 33 record groups in 2026. The complete set is available through the API.

CONSTELLIUM SE · CSTM

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 33 purchase / sale groups and 19 of 19 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"CSTM","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.