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CONSTELLIUM SE (CSTM)
Institutional ownership, SEC filings and insider activity
Sector: Raw materials · SEC CIK 0001563411 · EDGAR filings · Updated 2026-07-13
CONSTELLIUM SE (CSTM) has reported institutional ownership of 91.3%, with 309 institutional managers holding positions valued at $3.04B per the latest 13F reporting period.
Institutional ownership
91.3%
Institutional managers
309
Reported 13F value
$3.04B
Insider activity
37 trans.
−$5.77M net selling
Latest updates
- 2026-07-13 — Insider transaction reported (Form 4)
- 2026-06-24 — S-3ASR filed
- 2026-06-08 — Insider transaction reported (Form 4)
- 2026-06-04 — Notice of proposed sale filed (Form 144)
- 2026-06-01 — Insider transaction reported (Form 4)
- 2026-05-28 — SCHEDULE 13D/A filed
Institutional ownership overview
According to SEC 13F filings tracked by Sightfile, CONSTELLIUM SE has 309 institutional holders and institutional ownership of 91.3%.
Insider activity
Insiders reported 37 transactions (4 buys, 15 sells) across 22 reporting insiders, with a net reported value of −$5.77M.
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See full history, cross-references and alerts on SightfileSightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-13.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-13.