SEC Filings for CONSTELLIUM SE (CSTM)

Last updated: 2026-03-30 15:12 UTC | Total filings: 453

Browse the latest SEC filings and forms submitted by CONSTELLIUM SE (CSTM). Access annual reports, quarterly statements, and other official disclosures.

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Form Filing Date Description Link
PRE 14A March 30, 2026 PRE 14A View Document
4 March 17, 2026 FORM 4 View Document
4 March 17, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
4 March 16, 2026 FORM 4 View Document
144 March 16, 2026 - View Document
4 March 12, 2026 FORM 4 View Document
8-K March 12, 2026 8-K View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
4 March 11, 2026 FORM 4 View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
3/A March 11, 2026 FORM 3/A View Document
144 March 10, 2026 - View Document
144 March 10, 2026 - View Document
144 March 10, 2026 - View Document
144 March 10, 2026 - View Document
144 March 10, 2026 - View Document
144 March 10, 2026 - View Document
144 March 9, 2026 - View Document
4 March 6, 2026 FORM 4 View Document
144 March 4, 2026 - View Document
4 March 3, 2026 FORM 4 View Document
144 Feb. 27, 2026 - View Document
4 Feb. 27, 2026 FORM 4 View Document
4 Feb. 27, 2026 FORM 4 View Document
144 Feb. 26, 2026 - View Document
144 Feb. 25, 2026 - View Document
10-K Feb. 25, 2026 10-K View Document
144 Feb. 24, 2026 - View Document
4 Feb. 24, 2026 FORM 4 View Document
4 Feb. 24, 2026 FORM 4 View Document
8-K Feb. 18, 2026 8-K View Document
SCHEDULE 13G/A Feb. 5, 2026 - View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
3 Jan. 2, 2026 FORM 3 View Document
10-Q Oct. 29, 2025 10-Q View Document
8-K Oct. 29, 2025 8-K View Document
8-K Oct. 29, 2025 8-K View Document
SCHEDULE 13G Sept. 16, 2025 - View Document
SCHEDULE 13G/A Sept. 8, 2025 - View Document
SCHEDULE 13G/A Aug. 14, 2025 - View Document
SCHEDULE 13G/A Aug. 1, 2025 - View Document
10-Q July 31, 2025 10-Q View Document
8-K July 29, 2025 8-K View Document
SCHEDULE 13G May 30, 2025 - View Document
SD May 27, 2025 SD View Document
8-K May 22, 2025 8-K View Document
8-K April 30, 2025 8-K View Document
10-Q April 30, 2025 10-Q View Document
10-K/A April 15, 2025 10-K/A View Document
8-K April 15, 2025 8-K View Document
10-K Feb. 28, 2025 10-K View Document
8-K Feb. 20, 2025 8-K View Document
SCHEDULE 13G/A Feb. 14, 2025 - View Document
8-K Jan. 15, 2025 8-K View Document
SC 13G/A Nov. 14, 2024 - View Document
SC 13G Nov. 8, 2024 - View Document
6-K Oct. 23, 2024 6-K View Document
SC 13G Oct. 22, 2024 - View Document
6-K Aug. 27, 2024 6-K View Document
6-K July 25, 2024 6-K View Document
6-K July 24, 2024 6-K View Document
6-K July 23, 2024 6-K View Document
6-K July 23, 2024 6-K View Document
6-K July 3, 2024 6-K View Document
SC 13D/A June 6, 2024 SC 13D/A View Document
144 June 4, 2024 - View Document
SD May 28, 2024 SD View Document
S-8 May 16, 2024 S-8 View Document
6-K May 14, 2024 6-K View Document
6-K April 24, 2024 6-K View Document
6-K April 12, 2024 6-K View Document
F-3ASR March 20, 2024 F-3ASR View Document
20-F March 18, 2024 20-F View Document
UPLOAD March 5, 2024 - View Document
CORRESP March 1, 2024 - View Document
6-K Feb. 21, 2024 6-K View Document
UPLOAD Feb. 19, 2024 - View Document
SC 13G/A Feb. 14, 2024 - View Document
SC 13G/A Feb. 9, 2024 - View Document
SC 13G/A Feb. 6, 2024 - View Document
CORRESP Dec. 20, 2023 - View Document
CORRESP Nov. 29, 2023 - View Document
UPLOAD Nov. 21, 2023 - View Document
CORRESP Oct. 30, 2023 - View Document
6-K Oct. 25, 2023 6-K View Document
6-K Oct. 5, 2023 6-K View Document
CORRESP Oct. 4, 2023 - View Document
UPLOAD Sept. 29, 2023 - View Document
SC 13D/A Aug. 10, 2023 SC 13D/A View Document
6-K July 27, 2023 6-K View Document
6-K July 26, 2023 6-K View Document
6-K July 18, 2023 6-K View Document
6-K June 20, 2023 6-K View Document
6-K June 15, 2023 6-K View Document
SD May 31, 2023 SD View Document
6-K May 24, 2023 6-K View Document
6-K April 26, 2023 6-K View Document
20-F March 14, 2023 20-F View Document
6-K Feb. 22, 2023 6-K View Document
6-K Feb. 16, 2023 6-K View Document
SC 13G/A Feb. 14, 2023 - View Document
SC 13G Feb. 9, 2023 - View Document
SC 13G/A Feb. 3, 2023 - View Document
6-K Oct. 26, 2022 6-K View Document
SC 13G Aug. 10, 2022 - View Document
SC 13G/A Aug. 10, 2022 - View Document
6-K July 28, 2022 6-K View Document
6-K July 27, 2022 6-K View Document
6-K June 21, 2022 FORM 6-K View Document
SD May 27, 2022 FORM SD View Document
6-K May 24, 2022 6-K View Document
6-K April 27, 2022 6-K View Document
6-K April 6, 2022 FORM 6-K View Document
20-F March 14, 2022 20-F View Document
6-K Feb. 23, 2022 6-K View Document
SC 13G/A Feb. 14, 2022 - View Document
SC 13G Feb. 4, 2022 - View Document
6-K Oct. 27, 2021 6-K View Document
6-K Oct. 26, 2021 6-K View Document
6-K Oct. 13, 2021 6-K View Document
6-K July 29, 2021 6-K View Document
6-K July 28, 2021 6-K View Document
6-K June 10, 2021 6-K View Document
SD May 28, 2021 FORM SD View Document
6-K May 18, 2021 6-K View Document
6-K May 17, 2021 6-K View Document
6-K May 17, 2021 6-K View Document
S-8 May 14, 2021 S-8 View Document
6-K May 6, 2021 6-K View Document
6-K April 28, 2021 6-K View Document
6-K April 21, 2021 6-K View Document
20-F March 17, 2021 20-F View Document
6-K March 16, 2021 FORM 6-K View Document
6-K March 16, 2021 6-K View Document
6-K Feb. 25, 2021 6-K View Document
6-K Feb. 24, 2021 6-K View Document
SC 13G/A Feb. 16, 2021 - View Document
6-K Feb. 9, 2021 6-K View Document
6-K Feb. 9, 2021 6-K View Document
6-K Feb. 9, 2021 6-K View Document
6-K Dec. 22, 2020 FORM 6-K View Document
F-3ASR Nov. 13, 2020 F-3ASR View Document
6-K Oct. 27, 2020 FORM 6-K View Document
SC 13G/A Sept. 10, 2020 - View Document
6-K July 23, 2020 6-K View Document
6-K July 22, 2020 FORM 6-K View Document
6-K July 8, 2020 FORM 6-K View Document
6-K June 16, 2020 6-K View Document
6-K June 16, 2020 FORM 6-K View Document
6-K June 12, 2020 FORM 6-K View Document
SD May 29, 2020 FORM SD View Document
6-K May 26, 2020 FORM 6-K View Document
6-K April 29, 2020 FORM 6-K View Document
6-K March 20, 2020 FORM 6-K View Document
20-F March 9, 2020 20-F View Document
6-K Feb. 20, 2020 6-K View Document
SC 13G Feb. 14, 2020 - View Document
S-8 POS Dec. 12, 2019 S-8 POS View Document
S-8 POS Dec. 12, 2019 S-8 POS View Document
S-8 POS Dec. 12, 2019 S-8 POS View Document
POSASR Dec. 12, 2019 POSASR View Document
6-K Dec. 12, 2019 6-K View Document
8-A12B/A Dec. 12, 2019 8-A12B/A View Document
6-K Dec. 12, 2019 6-K View Document
6-K Nov. 26, 2019 6-K View Document
6-K Oct. 29, 2019 6-K View Document
6-K Oct. 24, 2019 6-K View Document
EFFECT Oct. 23, 2019 - View Document
424B3 Oct. 23, 2019 424B3 View Document
F-4/A Oct. 21, 2019 AMENDMENT NO.1 TO FORM F-4 View Document
CORRESP Oct. 21, 2019 - View Document
6-K July 25, 2019 6-K View Document
6-K July 25, 2019 6-K View Document
6-K July 9, 2019 6-K View Document
S-8 POS June 28, 2019 S-8 POS View Document
POSASR June 28, 2019 POSASR View Document
S-8 POS June 28, 2019 S-8 POS View Document
S-8 POS June 28, 2019 S-8 POS View Document
6-K June 28, 2019 6-K View Document
6-K June 28, 2019 6-K View Document
8-A12B/A June 28, 2019 8-A12B/A View Document
UPLOAD June 11, 2019 - View Document
F-4 June 3, 2019 FORM F-4 View Document
6-K May 31, 2019 FORM 6-K View Document
SD May 30, 2019 FORM SD View Document
6-K April 24, 2019 6-K View Document
6-K March 14, 2019 6-K View Document
20-F March 11, 2019 20-F View Document
6-K Feb. 21, 2019 6-K View Document
6-K Dec. 14, 2018 6-K View Document
6-K Dec. 11, 2018 6-K View Document
6-K Oct. 25, 2018 6-K View Document
UPLOAD Sept. 21, 2018 - View Document
CORRESP Sept. 14, 2018 - View Document
UPLOAD Aug. 31, 2018 - View Document
6-K/A Aug. 3, 2018 6-K/A View Document
6-K July 25, 2018 6-K View Document
6-K July 24, 2018 6-K View Document
S-8 June 27, 2018 S-8 View Document
SD May 31, 2018 SD View Document
6-K May 25, 2018 6-K View Document
6-K May 1, 2018 6-K View Document
6-K April 26, 2018 6-K View Document
6-K March 19, 2018 6-K View Document
20-F March 12, 2018 20-F View Document
6-K Feb. 23, 2018 FORM 6-K View Document
SC 13G/A Feb. 14, 2018 SC 13G/A View Document
SC 13G/A Feb. 14, 2018 - View Document
SC 13G/A Feb. 13, 2018 AMENDMENT NO. 2 TO SCHEDULE 13G View Document
SC 13G/A Feb. 9, 2018 SC 13G/A View Document
6-K Feb. 1, 2018 FORM 6-K View Document
6-K Feb. 1, 2018 FORM 6-K View Document
6-K Nov. 9, 2017 FORM 6-K View Document
SC 13D/A Nov. 8, 2017 SC 13D/A View Document
6-K Nov. 3, 2017 FORM 6-K View Document
424B5 Nov. 2, 2017 424B5 View Document
6-K Oct. 31, 2017 6-K View Document
FWP Oct. 31, 2017 FWP View Document
F-3ASR Oct. 30, 2017 F-3ASR View Document
424B5 Oct. 30, 2017 424B5 View Document
6-K Oct. 30, 2017 6-K View Document
6-K Oct. 26, 2017 6-K View Document
SC 13D/A Sept. 7, 2017 SC 13D/A View Document
6-K July 28, 2017 6-K View Document
6-K July 27, 2017 6-K View Document
6-K June 21, 2017 6-K View Document
SD May 31, 2017 SD View Document
6-K May 3, 2017 6-K View Document
6-K April 28, 2017 FORM 6-K View Document
6-K March 23, 2017 6-K View Document
6-K March 23, 2017 FORM 6-K View Document
20-F March 21, 2017 20-F View Document
6-K March 10, 2017 6-K View Document
6-K March 9, 2017 FORM 6-K View Document
6-K Feb. 16, 2017 FORM 6-K View Document
SC 13G/A Feb. 14, 2017 AMENDMENT NO. 1 TO SCHEDULE 13G View Document
SC 13G Feb. 14, 2017 - View Document
SC 13G/A Feb. 14, 2017 AMENDMENT NO. 2 View Document
SC 13G/A Feb. 14, 2017 SC 13G/A View Document
SC 13G/A Feb. 10, 2017 SC 13G/A View Document
SC 13G/A Feb. 9, 2017 CONSTELLIUM N.V. View Document
SC 13G/A Feb. 6, 2017 - View Document
6-K Feb. 2, 2017 6-K View Document
SC 13G/A Feb. 2, 2017 13G AMENDED ANNUAL FILING (CSTM) View Document
6-K Feb. 1, 2017 FORM 6-K View Document
6-K Nov. 10, 2016 FORM 6-K View Document
6-K Nov. 10, 2016 FORM 6-K View Document
6-K Nov. 7, 2016 FORM 6-K View Document
6-K Oct. 28, 2016 FORM 6-K View Document
EFFECT Sept. 20, 2016 - View Document
424B3 Sept. 20, 2016 424B3 View Document
CORRESP Sept. 16, 2016 - View Document
F-3/A Sept. 13, 2016 AMENDMENT NO. 1 TO THE FORM F-3 View Document
6-K Sept. 1, 2016 6-K View Document
6-K Aug. 8, 2016 6-K View Document
6-K Aug. 3, 2016 FORM 6-K View Document
6-K Aug. 2, 2016 6-K View Document
SC 13G July 18, 2016 SCHEDULE 13G View Document
UPLOAD July 11, 2016 - View Document
CORRESP June 29, 2016 - View Document
SC 13G/A June 9, 2016 - View Document
UPLOAD June 8, 2016 - View Document
SD May 27, 2016 SD View Document
6-K May 16, 2016 6-K View Document
F-3 May 13, 2016 F-3 View Document
6-K May 12, 2016 6-K View Document
6-K April 29, 2016 FORM 6-K View Document
6-K April 29, 2016 FORM 6-K View Document
20-F April 18, 2016 20-F View Document
6-K March 23, 2016 6-K View Document
6-K March 16, 2016 6-K View Document
6-K March 16, 2016 6-K View Document
6-K March 16, 2016 6-K View Document
6-K March 16, 2016 6-K View Document
6-K March 16, 2016 6-K View Document
SC 13G/A Feb. 16, 2016 CONSTELLIUM N.V. View Document
SC 13G/A Feb. 16, 2016 SCHEDULE 13G/A, #1 View Document
SC 13G Feb. 12, 2016 - View Document
SC 13G Feb. 12, 2016 SC 13G View Document
SC 13G/A Feb. 11, 2016 - View Document
SC 13G Feb. 11, 2016 SCHEDULE 13G View Document
SC 13G/A Feb. 11, 2016 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 4, 2016 13G AMENDED ANNUAL FILING - (CSTM) View Document
SC 13G/A Jan. 28, 2016 - View Document
SC 13G/A Jan. 26, 2016 - View Document
6-K Dec. 10, 2015 FORM 6-K View Document
6-K Dec. 1, 2015 6-K View Document
SC 13G Nov. 16, 2015 SCHEDULE 13G View Document
6-K Nov. 5, 2015 FORM 6-K View Document
6-K Oct. 1, 2015 FORM 6-K View Document
6-K Aug. 14, 2015 6-K View Document
6-K Aug. 11, 2015 6-K View Document
SD June 1, 2015 SD View Document
6-K May 14, 2015 6-K View Document
6-K April 30, 2015 FORM 6-K View Document
20-F April 24, 2015 FORM 20-F View Document
6-K March 27, 2015 6-K View Document
6-K March 12, 2015 FORM 6-K View Document
SC 13G March 6, 2015 CONSTELLIUM N.V. View Document
SC 13G Feb. 13, 2015 - View Document
SC 13G/A Feb. 13, 2015 - View Document
SC 13G Feb. 12, 2015 SEC SCHEDULE 13G View Document
SC 13G/A Feb. 9, 2015 13G AMENDED ANNUAL FILING - CSTM View Document
SC 13G Feb. 2, 2015 - View Document
SC 13G/A Jan. 27, 2015 - View Document
UPLOAD Jan. 16, 2015 - View Document
6-K Jan. 15, 2015 6-K View Document
CORRESP Jan. 15, 2015 - View Document
6-K Jan. 5, 2015 FORM 6-K View Document
UPLOAD Dec. 31, 2014 - View Document
S-8 Dec. 19, 2014 FORM S-8 View Document
6-K Dec. 4, 2014 6-K View Document
CORRESP Dec. 3, 2014 - View Document
6-K Nov. 19, 2014 FORM 6-K View Document
CORRESP Nov. 10, 2014 - View Document
6-K Oct. 21, 2014 6-K View Document
UPLOAD Oct. 10, 2014 - View Document
6-K Oct. 10, 2014 6-K View Document
6-K Oct. 6, 2014 6-K View Document
6-K Oct. 6, 2014 6-K View Document
6-K Oct. 3, 2014 FORM 6-K View Document
CORRESP Sept. 15, 2014 - View Document
6-K Aug. 29, 2014 FORM 6-K View Document
6-K Aug. 28, 2014 FORM 6-K View Document
UPLOAD Aug. 19, 2014 - View Document
6-K June 26, 2014 6-K View Document
6-K June 23, 2014 6-K View Document
6-K June 5, 2014 FORM 6-K View Document
SD June 2, 2014 SD View Document
6-K May 16, 2014 FORM 6-K View Document
6-K May 1, 2014 FORM 6-K View Document
6-K April 23, 2014 6-K View Document
20-F April 22, 2014 20-F View Document
6-K April 9, 2014 FORM 6-K View Document
6-K March 20, 2014 6-K View Document
SC 13D/A March 12, 2014 SC 13D/A View Document
424B4 March 7, 2014 424B4 View Document
SC 13D/A Feb. 12, 2014 SC 13D/A View Document
424B4 Feb. 7, 2014 424B4 View Document
SC 13G Feb. 7, 2014 13G INITIAL ANNUAL FILING - CSTM View Document
EFFECT Feb. 5, 2014 - View Document
FWP Feb. 5, 2014 FWP View Document
SC 13G Feb. 5, 2014 - View Document
F-1/A Feb. 4, 2014 AMENDMENT NO.1 TO FORM F-1 View Document
F-1 Jan. 27, 2014 FORM F-1 View Document
6-K Jan. 23, 2014 6-K View Document
SC 13G Jan. 21, 2014 - View Document
6-K Jan. 21, 2014 FORM 6-K View Document
6-K Jan. 15, 2014 FORM 6-K View Document
424B4 Dec. 12, 2013 424(B)(4) View Document
EFFECT Dec. 11, 2013 - View Document
F-1/A Dec. 10, 2013 F-1/A View Document
F-1 Dec. 6, 2013 FORM F-1 View Document
6-K Nov. 21, 2013 6-K View Document
6-K Nov. 14, 2013 6-K View Document
424B4 Nov. 8, 2013 424B4 View Document
EFFECT Nov. 6, 2013 - View Document
F-1/A Nov. 4, 2013 AMENDMENT NO.1 TO FORM F-1 View Document
S-8 Oct. 25, 2013 FORM S-8 View Document
F-1 Oct. 23, 2013 FORM F-1 View Document
6-K Aug. 30, 2013 FORM 6-K View Document
6-K Aug. 30, 2013 FORM 6-K View Document
6-K Aug. 29, 2013 6-K View Document
SC 13D/A July 25, 2013 AMENDMENT NO.1 View Document
6-K June 17, 2013 FORM 6-K View Document
SC 13D June 10, 2013 SC 13G View Document
SC 13D June 10, 2013 CAISSE DES DEPOTS ET CONSIGNATIONS SC 13D 5-29-2013 (CONSTELLIUM N.V.) View Document
424B4 May 23, 2013 424B4 View Document
CT ORDER May 23, 2013 - View Document
F-1/A May 22, 2013 AMENDMENT NO.5 TO FORM F-1 View Document
F-1/A May 22, 2013 F-1/A View Document
CORRESP May 22, 2013 - View Document
FWP May 22, 2013 FWP View Document
EFFECT May 22, 2013 - View Document
8-A12B/A May 21, 2013 8-A12B/A View Document
CERTNYS May 21, 2013 AUTO-GENERATED PAPER DOCUMENT View Document
F-1/A May 21, 2013 AMENDMENT NO.3 TO FORM F-1/A View Document
F-1/A May 17, 2013 F-1/A View Document
8-A12B May 17, 2013 8-A12B View Document
UPLOAD May 16, 2013 - View Document
F-1/A May 14, 2013 F-1/A View Document
DRS/A May 13, 2013 - View Document
F-1 May 13, 2013 F-1 View Document
DRSLTR May 13, 2013 - View Document
DRSLTR May 10, 2013 - View Document
DRS/A May 10, 2013 - View Document
UPLOAD May 9, 2013 - View Document
DRSLTR May 6, 2013 - View Document
DRSLTR May 6, 2013 - View Document
DRS/A May 6, 2013 - View Document
UPLOAD May 3, 2013 - View Document
DRSLTR April 29, 2013 - View Document
DRSLTR April 26, 2013 - View Document
DRS/A April 26, 2013 - View Document
UPLOAD April 23, 2013 - View Document
DRSLTR April 16, 2013 - View Document
DRS/A April 16, 2013 - View Document
UPLOAD April 8, 2013 - View Document
DRS/A March 28, 2013 - View Document
DRSLTR March 27, 2013 - View Document
UPLOAD Feb. 27, 2013 - View Document
DRS/A Feb. 15, 2013 - View Document
DRSLTR Feb. 14, 2013 - View Document
UPLOAD Dec. 31, 2012 - View Document
DRS Dec. 4, 2012 - View Document
DRSLTR Dec. 3, 2012 - View Document