Osisko Development Corp. — Regulatory Filings 2020

Nov 25, 2020

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CERTIFICATE OF AUTHOR – CHRISTINE BEAUSOLEIL

I, Christine Beausoleil, P.Geo. (OGQ No. 656, PGO No. 2958, EGBC No. 36156), do hereby certify that:

1. I am a professional geoscientist, employed as Geology Director of InnovExplo Inc., located at 560, 3[e] Avenue, Val-d’Or, Québec, Canada, J9P 1S4.

2. This certificate applies to the report entitled “NI 43-101 Technical Report and Mineral Resource Estimate for the Cariboo Gold Project, British Columbia, Canada” (the “Technical Report”) with an effective date and signature date of October 5, 2020. The Technical Report was prepared for Osisko Gold Royalties Ltd, Barkerville Gold Mine Ltd and Osisko Development Corp (the “issuers”).

3. I graduated with a Bachelor of Geology degree from Université du Québec à Montréal (Montréal, Québec) in 1997.

4. I am a member in good standing of the Ordre des Géologues du Québec (OGQ licence No. 656), the Association of Professional Geoscientists of Ontario (PGO licence No. 2958) and the Engineers & Geoscientists of British Columbia (EGBC licence No. 36156).

5. I have practiced my profession continuously as a geologist for a total of 23 years. During that time, I have been involved in mineral exploration, mine geology, ore control and resource modelling projects for gold, copper, zinc and silver properties in Canada.

6. I have read the definition of “qualified person” set out in National Instrument 43-101/Regulation 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 that instrument.

7. I conducted two site visits from January 22-25, 2019 and April 3-6, 2018.

8. I am the author of items 4 to 11, 23 and 24 of the Technical Report, and I am co-author and share responsibility for sections of items 1 to 3, 12 to 14 and 25 to 27.

9. I have not had prior involvement with the property that is the subject of this Technical Report.

10. I am independent of the issuer – Osisko Gold Royalties as well as Osisko Development and Barkerville Gold Mines – in accordance with the application of Section 1.5 of NI 43-101.

11. I have read NI 43-101 and Form 43-101F1, and the sections of the Technical Report for which I am responsible have been prepared in accordance with that instrument and form.

12. I am not aware of any material fact or material change with respect to the subject matter of the Technical Report that is not reflected in the Technical Report, the omission to disclose which makes the Technical Report misleading.

Signed this 5[th] day of October 2020 in Val-d’Or, Québec.

(Original signed and sealed)

Christine Beausoleil, P.Geo.

InnovExplo Inc.

christine.beausoleil@innovexplo.com

NI 43-101 Technical Report – Cariboo Gold Project – OCTOBER 2020

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