NexGen Energy Ltd.
For the period ended Dec 31, 2025. Filed Mar 4, 2026.
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The yearly report of certain Canadian companies, filed under a joint US and Canadian system. It is the main yearly account these companies give US investors, largely as filed in Canada.
FY2025 · Filed Mar 4, 2026
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Contents
EX-99.1 · Data Verification Procedures
Data Verification Procedures
The Qualified Person’s (“QP”) data verification steps included site visits during which RPA, now part of SLR, personnel reviewed core handling, logging, sample preparation and analytical protocols, density measurement system, and storage procedures. The QP also reviewed the Leapfrog model parameters and geological interpretation, reviewed how drill hole collar locations are defined, inspected the use of directional drilling methods, observed the data management system, obtained a copy of the master database, and obtained SRC laboratory certificates for all drilling assays.
A review of the database indicated no significant issues. A separate review of the assay table determined minimal errors, and all are most likely due to rounding. Limitations were not placed on the QP’s data verification process.
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