# Leigh Curyer

President and Chief Executive Officer

## Career chronology

- **Role reported in October 2026 presentation: NexGen Energy** — President and Chief Executive Officer. [October 2026 corporate presentation](<https://cdn.prod.website-files.com/66575dbf2aa79b76d9b4ca38/6abe75a198a0695bddde3422_NXE_Corporate%20Deck_Oct.pdf>) (PDF pp.32–33)

- **2002–2006: Southern Cross Resources** — Chief financial officer and corporate-development head. [2026 management information circular](<https://s28.q4cdn.com/891672792/files/doc_downloads/AGM/2026/NXE_MIC_051926.pdf>) (PDF p.42, Curyer biography)

- **2008–2011: Accord Nuclear Resource Management** — Head of corporate development. [2026 management information circular](<https://s28.q4cdn.com/891672792/files/doc_downloads/AGM/2026/NXE_MIC_051926.pdf>) (PDF p.42, Curyer biography)

## Contributions and company outcomes

### Federal construction licence granted [curyer_licence]

March 2026 · documented · high materiality

In March 2026 the CNSC issued the company a licence to prepare the site and construct Rook I. It explicitly does not authorize operation, which requires a future licensing decision.

**Attribution:** Role overlaps event; causation unproven. Curyer was CEO while the company secured the licence; the regulatory process and project development involved the wider team.

**Relevance:** Material project-permitting milestone; production remains a future stage.

[Commission issues Rook I construction licence](<https://www.canada.ca/en/nuclear-safety-commission/news/2026/03/commission-issues-a-licence-to-nexgen-energy-ltd-authorizing-site-preparation-and-construction-of-its-rook-i-project.html>) (Licence scope and decision); [October 2026 corporate presentation](<https://cdn.prod.website-files.com/66575dbf2aa79b76d9b4ca38/6abe75a198a0695bddde3422_NXE_Corporate%20Deck_Oct.pdf>) (PDF p.32 CEO)

## Governance and interests

### Unlicensed site-preparation violation upheld [curyer_cnsc]

2023–2025 · documented · high materiality

In December 2024 the CNSC issued a C$29,080 penalty for constructing two arrays of cased drill holes without a site-preparation licence. NexGen disputed the classification as exploration. In its 2025 determination, the Commission upheld the violation while reducing the penalty to C$11,920 and acknowledged a need for clearer definitions.

**Attribution:** Role overlaps event; causation unproven. This is a finding against the company while Curyer was CEO; no personal misconduct finding against him was identified.

**Relevance:** Material project compliance and governance context.

[Record of determination DET 25-H109](<https://api.cnsc-ccsn.gc.ca/dms/digital-medias/Record-of-Determination-NexGen-Energy-Ltd-AMP-2024-AMP-06-CMD-25-H109.pdf/object>) (pp.1–3, 19: review, findings and corrected penalty); [2026 management information circular](<https://s28.q4cdn.com/891672792/files/doc_downloads/AGM/2026/NXE_MIC_051926.pdf>) (CEO biography)

## Suitability for the current role

### Founder; corporate finance, uranium project development [leigh-curyer-fit]

Issuer-reported career through 2026 · analyst inference · low materiality

NexGen states that Curyer founded the company, previously held corporate-development roles at Accord Nuclear and was CFO and head of corporate development at Southern Cross Resources. The 2026 circular reports that he founded NexGen in 2011.

**Attribution:** Responsibility not applicable. Role relevance is an analyst inference; issuer descriptions do not establish individual causation or credential validity.

**Relevance:** Relevant to the assigned management role; evidence remains limited.

[Leadership team](<https://www.nexgenenergy.ca/company>) (Individual biography); [2026 management information circular](<https://s28.q4cdn.com/891672792/files/doc_downloads/AGM/2026/NXE_MIC_051926.pdf>) (Named-person section)

## Evidence gaps

- Independent verification of qualifications, complete career dates, prior-employer outcomes and comprehensive regulator/court records is incomplete.

- The documented name-and-employer search is a limited open-web screen and is not criminal, sanctions or litigation clearance.
