Closed periods 2021*

31 December 2020 23:59 - 15 February 2021 at 8 AM CET
31 March 2021 23:59 - 10 May 2021 at 8 AM CET
30 June 2021 23:59 - 2 August 2021 at 8 AM CET
30 September 2021 23:59 - 8 November 2021 at 8 AM CET

* Every Designated Person and other Insiders as defined in the Insider Regulations is prohibited from executing Transactions in ArcelorMittal Financial Instruments during a Closed Period, irrespective of whether he or she possesses Inside Information, unless an exception to this prohibition applies as set out in Section 5 of these Regulations.

Investor relations "black-out" non-communication period

The 7^th Business Day after the end of the quarter up until (i) the publication of the quarterly figures or the six-monthly figures of ArcelorMittal or (ii) the announcement of an extraordinary dividend (whichever is later).

Please refer to the ArcelorMittal insider dealing regulations for additional information.

Investor events

The Annual General Meeting and Extraordinary General Meeting is due to take place on Tuesday 4 May 2021 at 12 p.m. (noon) CET.