Quick Takeaways
- Citadel Securities GP LLC filed SCHEDULE 13G/A for Nano Nuclear Energy Inc. Common stock, par value $0.0001 per share (the "Shares") (NNE).
- Disclosed ownership: 3.9%.
- Date of event: 31 Dec 2025.
Citadel Securities GP LLC - 31 Dec 2025 SCHEDULE 13G/A Report for Nano Nuclear Energy Inc. Common stock, par value $0.0001 per share (the "Shares") (NNE)
- Filing Manager
- Citadel Securities GP LLC
- Reporting Manager
- Kenneth Griffin
- Symbol
- NNE
- Shares outstanding
- 50,210,615 shares
- Disclosed Ownership
- 1,958,214 shares
- Ownership
- 3.9%
- Form type
- SCHEDULE 13G/A
- Filing time
- 17 Feb 2026, 16:54:24 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 21 Oct 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Citadel Securities GP LLC disclosed 3.9% ownership in Nano Nuclear Energy Inc. Common stock, par value $0.0001 per share (the "Shares") (NNE) on 31 Dec 2025."
What Changed
- Previous schedule filing date: 21 Oct 2025.
- Current filing was accepted on 17 Feb 2026, 16:54.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (7)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Citadel Securities GP LLC | 1.5% | 758,771 | 0 | 758,771 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Citadel Securities LLC | 1.5% | 745,871 | 0 | 745,871 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Citadel Securities Group LP | 1.5% | 758,771 | 0 | 758,771 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Citadel Advisors LLC | 2.4% | 1,199,443 | 0 | 1,199,443 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Citadel Advisors Holdings LP | 2.4% | 1,199,443 | 0 | 1,199,443 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Citadel GP LLC | 2.4% | 1,199,443 | 0 | 1,199,443 | /s/ Seth Levy | Seth Levy, Authorized Signatory | |
| Kenneth Griffin | 3.9% | 1,958,214 | 0 | 1,958,214 | /s/ Seth Levy | Seth Levy, attorney-in-fact* |