SIERRA METALS TO RELEASE Q1-2021 CONSOLIDATED FINANCIAL RESULTS on THURSDAY MAY 6th, 2021

Toronto, ON – April 12, 2021 – Sierra Metals Inc. (TSX: SMT) (NYSE American: SMTS)
(BVL: SMT) (“Sierra Metals” or the “Company”) will release Q1-2021 financial results on
Thursday May 6th, 2021 after Market Close. Senior Management will also host a webcast and
conference call on Friday May 7th, 2021 at 10:30am EDT.

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