Technical Report, Updated Mineral Resource Estimate and Preliminary Economic Assessment on the HOMESTAKE RIDGE GOLD PROJECT SKEENA MINING DIVISION BRITISH COLUMBIA Latitude 55° 45' 12.6" N and Longitude 129° 34' 39.8" W Qualified Persons: Paul Chamois, P.Geo. Philip Geusebroek, P.Geo. Mary Mioska, P.Eng. David M.R. Stone, P.Eng. Prepared by: MINEFILL SERVICES, INC. PO BOX 725 BOTHELL, WASHINGTON Effective Date: May 29, 2020 Amended and Restated: June 24, 2020. IMPORTANT NOTICE This report was prepared as a National Instrument 43-101 Technical Report for the exclusive use of Auryn Resources Ltd. (Auryn) by MineFill Services, Inc., (MineFill). The quality of information, conclusions, and estimates contained herein is consistent with industry standards based on i) information available at the time of preparation, ii) data supplied by outside sources, and iii) the assumptions, conditions, and qualifications as set forth in this report. This report is intended for use by Auryn subject to the terms and conditions of its contract with MineFill. Except for the purposes legislated under Canadian provincial and territorial securities law, any other use of this report by any third party is at that party’s sole risk. Homestake Ridge Project NI43-101F1 Technical Report Table of Contents Page 1. SUMMARY .............................................................................................................1-1 1.1 Overview .....................................................................................................1-1 1.2 Geology ......................................................................................................1-1 1.3 Mineralization ..............................................................................................1-2 1.4 Exploration Highlights..................................................................................1-3 1.5 Mineral Resources ......................................................................................1-3 1.6 Mineral Reserves ........................................................................................1-4 1.7 Mining Operations .......................................................................................1-4 1.8 Processing ..................................................................................................1-4 1.9 Site Infrastructure ........................................................................................1-5 1.10 Capital Costs ...............................................................................................1-6 1.11 Operating Costs ..........................................................................................1-6 1.12 Financial Model ...........................................................................................1-6 1.13 Qualified Persons Opinion ...........................................................................1-7 2. INTRODUCTION ....................................................................................................2-1 2.1 The Issuer ...................................................................................................2-1 2.2 Terms of Reference ....................................................................................2-1 2.3 Sources of Information ................................................................................2-1 2.4 Qualified Persons ........................................................................................2-3 2.5 Personal Inspection .....................................................................................2-3 2.6 Terms and Definitions .................................................................................2-4 3. RELIANCE ON OTHER EXPERTS.........................................................................3-1 4. PROPERTY DESCRIPTION AND LOCATION .......................................................4-1 4.1 Location ......................................................................................................4-1 4.2 Project Ownership .......................................................................................4-2 4.3 Mineral Tenure ............................................................................................4-2 4.4 Royalties and Encumbrances ......................................................................4-2 4.5 Property Agreements ..................................................................................4-2 4.6 Permitting Considerations ...........................................................................4-2 4.7 Environmental Considerations .....................................................................4-4 4.8 Social License Considerations ....................................................................4-4 4.9 Comments on Section 4 ..............................................................................4-4 5. ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE, AND PHYSIOGRAPHY ...................................................................................................5-1 5.1 Site Access .................................................................................................5-1 5.2 Climate ........................................................................................................5-1 5.3 Local Resources and Infrastructure .............................................................5-3 5.4 Physiography ..............................................................................................5-4 5.4.1 Terrain .............................................................................................5-4 5.4.2 Vegetation .......................................................................................5-4 Effective Date: May 29, 2020 Page i Amended and Restated: June 24, 2020 Homestake Ridge Project NI43-101F1 Technical Report 5.5 Seismicity ....................................................................................................5-5 5.6 Comments on Section 5 ..............................................................................5-6 6. HISTORY ...............................................................................................................6-1 6.1 Prior Ownership ..........................................................................................6-1 6.2 Exploration History ......................................................................................6-1 6.3 Production ...................................................................................................6-3 7. GEOLOGICAL SETTING AND MINERALIZATION .................................................7-1 7.1 Regional Geology ........................................................................................7-1 7.2 Local Geology .............................................................................................7-4 7.3 Property Geology ........................................................................................7-6 7.4 Mineralization ............................................................................................7-10 7.4.1 Homestake Main Deposit ...............................................................7-12 7.4.2 Homestake Silver Deposit..............................................................7-12 7.4.3 South Reef Zone ...........................................................................7-13 7.5 Prospects/Exploration Targets ..................................................................7-13 7.5.1 Vanguard Cu and Au Zones ..........................................................7-15 7.5.2 Sericite Zone (Gold Reef, Fox Reef) ..............................................7-15 7.5.3 Dilly and Dilly West Zones .............................................................7-15 7.5.4 North Homestake Zone (North Dome) ...........................................7-16 7.5.5 KNHSR1 ........................................................................................7-16 7.5.6 Kombi ............................................................................................7-17 7.5.7 Bria ................................................................................................7-17 8. DEPOSIT TYPES ...................................................................................................8-1 9. EXPLORATION ......................................................................................................9-1 9.1 Rock Sampling ............................................................................................9-1 9.1.1 Rock Sampling Methodology ...........................................................9-1 9.1.2 Rock Sampling Results ....................................................................9-2 9.2 Soil Sampling ..............................................................................................9-2 9.2.1 2017 Ah Horizon Soil Sampling Methodology ..................................9-2 9.2.2 2017 Talus Fines Sampling Methodology ........................................9-3 9.2.3 B-Horizon Soil Sampling Methodology .............................................9-3 9.2.4 Soil Sample Results.........................................................................9-4 9.3 Induced Polarization Survey ........................................................................9-4 9.4 Re-log of Historic Drill Core .........................................................................9-5 9.5 Geochronological Study ..............................................................................9-5