1 November 23, 2023 CONSTELLIUM SE CLAWBACK/COMPENSATION RECOVERY POLICY EFFECTIVE AS OF OCTOBER 2, 2023 The Board of Directors (the “Board”) of Constellium SE (the “Company”) has adopted this Clawback/Compensation Recovery Policy (this “Policy”) in accordance with Section 303A.14 of The New York Stock Exchange Listed Company Manual (the “Clawback Rules”) as approved by the Securities and Exchange Commission on June 9, 2023. The Human Resources Committee of the Company’s Board (the “Committee”) is designated to administer this Policy. Capitalized terms not otherwise defined in this Policy have the meanings given to them under the Clawback Rules. Section 1: Purposes: Recovery of Erroneously Awarded Incentive Compensation The Company shall comply with the Clawback Rules and reasonably promptly recover Erroneously Awarded Compensation Received by current or former Executive Officers of the Company (“Covered Individuals”) in the event the Company is required to prepare an accounting restatement due to the Company’s material noncompliance with any financial reporting requirement under the securities laws, including any required accounting restatement to correct an error in previously issued financial statements that is material to such previously issued financial statements, or that would result in a material misstatement if the error were corrected in the current period or left uncorrected in the current period. The Committee may determine not to recover Erroneously Awarded Compensation pursuant to this Policy in circumstances where non-enforcement is expressly permitted by the Clawback Rules, including where recovery would violate applicable home country laws in effect before November 28, 2022. Section 2: Covered Individuals The Committee shall determine the list of the Company’s Covered Individuals, who shall be the Executive Officers of the Company. Such list shall be reviewed and approved by the Company’s Board, and may be updated from time to time. Section 3: Covered Compensation This Policy applies to the Incentive-based Compensation Received by a Covered Individual: (1) after such Covered Individual began service as an Executive Officer; (2) who served as an Executive Officer at any time during the performance period for that Incentive-based Compensation; (3) while the Company has a class of securities listed on a national securities exchange or a national securities association; and (4) during the three completed fiscal years immediately preceding the date that the Company is required to prepare an accounting restatement as described above (or during any transition period, that results from a change in the Company’s fiscal year, within or immediately following those three completed fiscal years, as determined in accordance with the Clawback Rules).

The amount of Incentive-based Compensation subject to this Policy is the Erroneously Awarded Compensation, which is the amount of Incentive-based Compensation Received by a Covered Individual that exceeds the amount of Incentive-based Compensation that otherwise would have been Received by the Covered Individual had it been determined based on the restated amount (or otherwise determined in accordance with the Clawback Rules), and will be computed without regard to any taxes paid by the Covered Individual (or withheld from the Incentive-based Compensation). The Committee shall make all determinations regarding the amount of Erroneously Awarded Compensation. Section 4: Method of Recovery The Committee shall determine, in its sole discretion, the manner in which any Erroneously Awarded Compensation shall be recovered. In order of preference and to the extent applicable, methods of recovery may include, but are not limited to: (1) reducing (subject to applicable law and the terms and conditions of the applicable plan, program or arrangement pursuant to which the incentive-based compensation was paid) the amount that would otherwise be payable to the Covered Individual under any bonus, incentive, equity, compensation and other benefit plan, agreement, policy or arrangement maintained by the Company or any of its affiliates (in the order presented above); (2) cancelling any award (whether cash- or equity-based) or portion thereof previously granted to the Covered Individual; (3) seeking direct repayment from the Covered Individual; or (4) any combination of the foregoing. Section 5: No-Fault Basis This Policy applies on a no-fault basis, and Covered Individuals will be subject to recovery under this Policy without regard to their personal culpability. Section 6: Other Company Arrangements This Policy shall be in addition to, and not in lieu of, any other clawback, recovery or recoupment policy maintained by the Company from time to time, as well as any clawback, recovery or recoupment provision in any of the Company’s plans, awards or individual agreements (including the clawback, recovery and recoupment provisions in the Company’s equity award agreements) (collectively, “Other Company Arrangement”) and any other rights or remedies available to the Company, including termination of employment; provided, however, that there is no intention to, nor shall there be, any duplicative recoupment of the same compensation under more than one policy, plan, award or agreement. In addition, no Other Company Arrangement shall serve to restrict the scope or the recoverability of Erroneously Awarded Compensation under this Policy or in any way limit recovery in compliance with the Clawback Rules. Section 7: No Indemnification: Notwithstanding anything to the contrary set forth in any policy, arrangement, bylaws, charter, certificate of incorporation or plan of the Company or any individual agreement between a Covered Individual and the Company or any of its affiliates, no Covered Individual shall be entitled to indemnification from the Company or any of its affiliates for the amount that is or may be recovered by the Company pursuant to this Policy.

Section 8: Administration; Interpretation The Committee shall interpret and construe this Policy consistent with the Clawback Rules and applicable laws and regulation and shall make all determinations necessary, appropriate or advisable for the administration of this Policy. Any determinations made by the Committee shall be final, binding and conclusive on all affected individuals. As required by the Clawback Rules, the Company shall provide public disclosures related to this Policy and any applicable recoveries of Erroneously Awarded Compensation. To the extent this Policy conflicts with or is inconsistent with the Clawback Rules, the Clawback Rules shall govern. In no event is this Policy intended to be broader than, or require recoupment in addition to, that required pursuant to the Clawback Rules. Section 9: Amendment or Termination of this Policy The Board reserves the right to amend this Policy at any time and for any reason, subject to applicable law and the Clawback Rules. To the extent that the Clawback Rules cease to be in force or cease to apply to the Company, this Policy shall also cease to be in force. Approved and Adopted by the Company’s Board of Directors: November 23, 2023