---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-010036"
form_type: "8-K"
ticker: "NNE"
cik: "0001923891"
company_name: "Nano Nuclear Energy Inc."
filed_at: "2025-03-12T23:59:59+00:00"
generated_at: "2026-05-24T22:47:20.574670+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Nano Nuclear appoints Dr. Florent Heidet as CTO and Head of Reactor Development

## Summary
- Dr. Florent Heidet appointed CTO and Head of Reactor Development effective March 6, 2025.
- Previously Head of Engineering at Ultra Safe Nuclear Corp.; brings experience on KRONOS MMR systems acquired by NNE earlier this year.
- Annual base salary $300,000, sign-on bonus $25,000, and option grant of 338,000 shares at $26.97 vesting over six years.
- Former Head of Reactor Development James Walker steps down from that role but remains CEO and director.
- Heidet will report to CEO and President; focus on advancing reactor projects including ZEUS, ODIN, KRONOS MMR.

## SEC filing metadata
- accession: 0001493152-25-010036
- form_type: 8-K
- ticker: NNE
- cik: 0001923891
- company_name: Nano Nuclear Energy Inc.
- filed_at: 2025-03-12T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1923891/000149315225010036/0001493152-25-010036-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1923891/000149315225010036/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-010036
- JSON: https://secwatch.observer/filing/0001493152-25-010036.json
- Plain text: https://secwatch.observer/filing/0001493152-25-010036.txt

## Key facts
- Executive change
  Dr. Florent Heidet was appointed as Chief Technology Officer and Head of Reactor Development at Nano Nuclear Energy Inc..
  - Action: appointed
  - Role: Chief Technology Officer and Head of Reactor Development
  source text: appointed Dr. Florent Heidet as the Company’s Chief Technology Officer (“CTO”) and Head of Reactor Development, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1923891/000149315225010036/0001493152-25-010036-index.htm
- Executive change
  James Walker resigned as Head of Reactor Development at Nano Nuclear Energy Inc..
  - Action: resigned
  - Role: Head of Reactor Development
  source text: The Company’s former Head of Reactor Development, James Walker, has resigned from his position as Head of Reactor Development, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1923891/000149315225010036/0001493152-25-010036-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.