Aftermath Silver Ltd. — Regulatory Filings 2021

Feb 26, 2021

AMC Mining Consultants (Canada) Ltd. BC0767129

200 Granville Street, Suite 202 Vancouver BC V6C 1S4 Canada

T +1 604 669 0044 E vancouver@amcconsultants.com W amcconsultants.com

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CERTIFICATE OF AUTHOR

I, John Morton Shannon, P.Geo., of Vancouver, British Columbia, do hereby certify that:

• 1 I am currently employed as Principal Geologist with AMC Mining Consultants (Canada) Ltd., with an office at Suite 202, 200 Granville Street, Vancouver, British Columbia V6C 1S4.

• 2 This certificate applies to the technical report titled “Berenguela Silver-Copper-Manganese Property Update”, with an effective date of 18 February 2021 (the “Technical Report”), prepared for Aftermath Silver Ltd. (“the Issuer”).

• 3 I am a member in good standing of the Engineers and Geoscientists British Columbia (Registration #32865) and the Association of Professional Geoscientists of Ontario (Registration #0198), and a member of the Canadian Institute of Mining, Metallurgy, and Petroleum. I am a graduate of Trinity College Dublin in Dublin, Ireland (BA Mod Nat. Sci. in Geology in 1971). I have practiced my profession continuously since 1971, and have been involved in mineral exploration and mine geology for over 40 years since my graduation from university. This has involved working in Ireland, Zambia, Canada, and Papua New Guinea. My experience is principally in base metals and precious metals. I have both been Chief Geologist at Porgera Mine in PNG and also worked on a similar deposit to this in Chile.

  • I have read the definition of "qualified person" set out in National Instrument 43-101 (NI 43-101) and certify that by reason of my education, affiliation with a professional association (as defined in NI 43-101) and past relevant work experience, I fulfill the requirements to be a "qualified person" for the purposes of NI 43-101.

• 4 I have not visited the Berenguela Property.

• 5 I am responsible for Sections 2-6, 8-9, 11, 14-24 and parts of 1, 7, 10, 12, and 25-27 of the Technical Report.

• 6 I am independent of the Issuer and related companies applying all of the tests in Section 1.5 of the NI 43-101.

• 7 I have not had prior involvement with the property that is the subject of the Technical Report. 8 I have read NI 43-101 and the section of the Technical Report for which I am responsible has been prepared in compliance with NI 43-101.

• 9 As of the effective date of the Technical Report, to the best of my knowledge, information, and belief, the section of the Technical Report for which I am responsible contains all scientific and technical information that is required to be disclosed to make the Technical Report not misleading.

Effective Date: 18 February 2021 Signing Date: 25 February 2021

Original signed and sealed by

John Morton Shannon, P.Geo. General Manager / Principal Geologist AMC Mining Consultants (Canada) Ltd.