Nano Nuclear Energy Inc. · NASDAQ:NNE

Nano Nuclear Energy — Corporate Update (October 2025)

31 slides from Nano Nuclear Energy's corporate update, Oct 24, 2025

1. Slide 1: NANO Nuclear Energy Drilling Milestone Ceremony and Investor Event Presentation

   NANO Nuclear Energy Drilling Milestone Ceremony and Investor Event Presentation O c t o b e r 2 4 th 2 0 2 5 1 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

2. Slide 2: Cautionary Note Regarding Forward-Looking Statements

   nanonuclearenergy.com C a u t i o n a r y N o t e Re g a rd i n g F o r w a rd - L o o k i n g S t a t e m e n t s This presentation and statements of NANO Nuclear’s management in connection with this presentation contain or may contain "forward-looking statements" within the meaning of Section 21E

3. Slide 3: Agenda

   nanonuclearenergy.com Agenda Introductory Remarks • Susan Martinis, Vice Chancellor for Research & Innovation, University of Illinois • Jay Yu, Founder, Executive Chairman and President, NANO Nuclear Energy NANO Nuclear Energy Remarks • James Walker, CEO, NANO Nuclear Energy • Florent Heidet, CTO an

4. Slide 4: Introductory Remarks

   nanonuclearenergy.com Introductory Remarks Susan Martinis, Vice Chancellor for Research and Innovation at University of Illinois 4 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

5. Slide 5: Introductory Remarks

   nanonuclearenergy.com Introductory Remarks Jay Yu, Founder, Executive Chairman and President, NANO Nuclear Energy 5 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

6. Slide 6: AECOM Drilling First Step Toward First KRONOS MMR Prototype

   nanonuclearenergy.com A E COM D r i l l i n g F i r s t S t e p Tow a rd F i r s t K RON OS M M R Pro t o t y p e 6 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

7. Slide 7: NANO Nuclear Has the Tech, Capital, and Team to Deliver

   nanonuclearenergy.com NA N O N u c l e a r H a s t h e Te c h , C a p i t a l , a n d Te a m t o D e l i ve r KRONOS MMR Well-Capitalized & Supported Management Team with Differentiated & De-Risked by Leading Institutions Experience in Nuclear • High TRL & more than $120M invested in • Raised more t

8. Slide 8: NANO Nuclear's Differentiated Strategy, Key Partnerships & Policy Support

   nanonuclearenergy.com NANO Nuclear’s Differentiated Strategy, Key Partnerships & Policy Support James Walker, CEO 8 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

9. Slide 9: Microreactors - The Future of Nuclear Energy

   nanonuclearenergy.com M i c ro re a c t o r s - T h e F u t u re o f N u c l e a r E n e rgy Economies of Ability to Scale Minimal Ability to Fully Modular & • Increased potential for economies of scale driven Energy Source Scale? Cost Effectively? Safety Risk? Co-locate? Assembled at Site? by modul

10. Slide 10: NANO Nuclear Seeking Vertical Integration to De-Risk Reactor Deployment

    nanonuclearenergy.com N A N O N u c l e a r S e e k i n g Ve r t i c a l I n t e g r a t i o n t o D e - R i s k R e a c t o r D e p l o y m e n t Primary Steps of the Nuclear Fuel Cycle Yellow Cake Fuel Fabricated From Uranium Mining converted to UF6 gas Enriched UF6 Uranium milled into UF6 Enriche

11. Slide 11: Strategic Collaborations, Project Supporters, and Government Support Enabling Success

    nanonuclearenergy.com S t r a t e g i c C o l la b o r a t i o n s , Pro j e c t S u p p o r t e r s , a n d G ove r n m e n t S u p p o r t E n a b l i n g S u c c e s s Key Project Supporters University of Illinois • Hatch & PCL bring decades of proven • U of I provides credibility, nuclear experi

12. Slide 12: KRONOS MMR Technology Overview & Compelling Value Proposition

    nanonuclearenergy.com KRONOS MMR Technology Overview & Compelling Value Proposition Florent Heidet, CTO & Head of Reactor Development 12 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

13. Slide 13: KRONOS Differentiated High-Temp Gas Cooled Reactor Utilizing TRISO Fuel

    nanonuclearenergy.com K RON OS D i f fe re n t i a t e d H i g h - Te m p G a s C o o l e d Re a c t o r U t i l i z i n g T R I SO F u e l Standard Design Characteristics Coolant Helium Fuel TRISO Enrichment 9.9% Materials Moderator Graphite Structure Steel Buildings Pre-fab + concrete structures P

14. Slide 14: Simple/Flexible Design and Modularity Enable Deployment Versatility

    nanonuclearenergy.com S i m p l e / F l ex i b l e D e s i g n a n d M o d u l a r i t y E n a b l e D e p l oy m e n t Ve r s a t i l i t y • KRONOS’ standard design and modularity provides versatility in deployment and ability to serve various industries and projects of different scales • Option 1

15. Slide 15: Reactor Safety Features Enable Favorable Footprint & Ability to Co-locate

    nanonuclearenergy.com Re Reaaccttoorr SSaafe fettyy FFeeaattuure ress EEnnaabbl lee FFav avoorraabbl lee FFoooottpprri inntt && AAbbi il li ittyy ttoo CCoo l-ol o ca t et e ca Negative Reactivity Reactor Passive Heat Removal Passive Shutdown Safety Attributes Fuel Safety Features Feedback Inert cool

16. Slide 16: KRONOS Can Provide Constant Baseload Power & Compelling Economics

    nanonuclearenergy.com K RON OS C a n Prov i d e C o n s t a n t B a s e l o a d Powe r & C o m p e l l i n g E c o n o m i c s 16 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

17. Slide 17: IL Facility & Growing Number of Strategic Partners Represent Key Areas of Progress

    nanonuclearenergy.com I L F a c i l i t y & G row i n g N u m b e r o f S t r a t e g i c Pa r t n e r s Re p r e s e n t Key A r e a s o f Pro g r e s s • Recently established Oak Brook, IL facility will serve as a base for collaboration with the U of I on development and regulatory licensing • Hir

18. Slide 18: University of Illinois Leadership Remarks

    nanonuclearenergy.com University of Illinois Leadership Remarks Rashid Bashir, Dean, The Grainger College of Engineering, University of Illinois 18 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

19. Slide 19: University of Illinois Leadership Remarks

    nanonuclearenergy.com University of Illinois Leadership Remarks Caleb Brooks, Professor and Donald Biggar Willet Faculty Scholar, University of Illinois 19 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

20. Slide 20: Hatch – A Leading EPCM Firm Serving the Nuclear Industry

    nanonuclearenergy.com Hatch – A Leading EPCM Firm Serving the Nuclear Industry Paulo Mesiti, Director, Nuclear Projects, Hatch 20 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

21. Slide 21: PCL – A Prominent Construction Firm With Deep Expertise in Advanced Energy Infrastructure

    nanonuclearenergy.com PCL- A Prominent Construction Firm With Deep Expertise in Advanced Energy Infrastructure Peter Tawfik, Director, Nuclear Operations, PCL Construction 21 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

22. Slide 22: About PCL

    ABOUT PCL $12B+ 119 100% 32+ In Annual Volume Year Old Company Employee Owned Offices Across North America Nuclear Certified Constructor and Fabricator 22 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

23. Slide 23: About PCL

    ABOUT PCL LG&E CANE RUN 7-NGCC COMBINED CYCLE FABRICATION & MODULE FACILITIES KEARL OIL SANDS PROJECT (EXXON) OG&E MUSTANG SIMPLE CYCLE BUILDING A BETTER FUTURE, TOGETHER 23

24. Slide 24: Advanced Nuclear Solutions Needed To Address Growing Data Center Power Needs

    nanonuclearenergy.com Advanced Nuclear Solutions Needed To Address Growing Data Center Power Needs Matthew O’Hare, CDCS, Managing Director, Power Construction & VP, AFCOM Chicago 24

25. Slide 25: US Data Center Power Capacity Expected to 5x by 2035

    nanonuclearenergy.com US D a t a C e n t e r Powe r C a p a c i t y E x p e c t e d t o 5 x by 2 03 5 2030E 120 GW 2025E 41 GW 2035E 176 GW 2024 33 GW Note: “E” refers to estimated data center power capacity. Source: Deloitte Research Center for Energy and Industrials’ analysis of data taken from DC

26. Slide 26: Why Advanced Nuclear for Data Centers?

    nanonuclearenergy.com W hy A d v a n c e d N u c l e a r fo r D a t a C e n t e r s ? Resilient Lower Baseload Power Transmission Costs Reduced Grid Scalable Dependency Deployment 26 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

27. Slide 27: Exploring KRONOS as a Scalable Solution for BaRupOn's Energy Future

    nanonuclearenergy.com Exploring KRONOS as a Scalable Solution for BaRupOn’s Energy Future Derek Matthews, CSO & Electrical Architect, BaRupOn 27 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

28. Slide 28: KRONOS MMR Applicability for Military Applications

    nanonuclearenergy.com KRONOS MMR Applicability for Military Applications Vice Admiral Joe Leidig, Jr., U.S. Navy (Ret.), NANO Nuclear Executive Advisory Board Member 28 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

29. Slide 29: KRONOS MMR Ideal for DoD Requirements

    nanonuclearenergy.com K RON OS M M R I d e a l fo r D o D Re q u i re m e n t s Safety Operational Pillars Fit for DoD Security Mission Pillars Readiness 29 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

30. Slide 30: KRONOS MMR: The Nuclear Backbone For Next Generation Off-Grid & Microgrid Infrastructure

    nanonuclearenergy.com KRONOS MMR: The Nuclear Backbone For Next Generation Off-Grid & Microgrid Infrastructure General Wesley K. Clark U.S. Army (Ret.), NANO Nuclear Energy Executive Advisory Board Member 30 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

31. Slide 31: Thank You!

    nanonuclearenergy.com THANK YOU! For Further Information, Please Contact: ir@nanonuclearenergy.com 31 © 2025 NANO Nuclear Energy, Inc. All rights reserved.

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