Deep Fission, Inc. · NASDAQ:FISN
Deep Fission — Corporate Update (October 2026)
19 slides from Deep Fission's corporate update, October 2026
Slide 1: Business Update
October 2026 Nasdaq: FISN DeepFission.com Business Update 1
Slide 2: Forward-looking statements
Forward-looking statements This presentation includes forward-looking statements within the meaning of federal securities laws, including the Private Securities Litigation Reform Act of 1995. Forward-looking statements describe future expectations, plans, results or strategies and can often be ident
Slide 3: Straight to commercial power
Straight to commercial power. Key updates: Regulatory NSDA approved & published for transparency Commercial Siting Master Energy Purchase Agreement signed in Kansas Fuel Standard LEU contract with Urenco Construction Commercial drilling & non-nuclear testing underway Customers Multi GWe pipeline of
Slide 4: Long-term demand is obvious. Our focus is delivery at scale
Long-term demand is obvious. Our focus is delivery at scale Utilities, data centers, and defense are adding load by 2028. faster than expected growth in supply.
Slide 5: Deep Fission is moving to fill the immediate generation gap
Deep Fission is moving to fill the immediate generation gap. Signed a first binding, conditional energy offtake agreement in October 2026. Total pipeline includes data centers, industrial parks, co- developers and strategic partners, signaling discerning buyer belief in Deep Fission’s capability to
Slide 6: Leveraging three mature technologies
Leveraging three mature technologies. Deep Borehole Drilling Decades-proven commercial drilling techniques for containment one mile underground. Deep Fission aims to simplify Geothermal Technology nuclear reactor deployment— Using established processes for energy deep underground, designed transfer
Slide 7: Gravity does the work. Passive safety by design.
d Gravity does the work. 1 Passive safety by design. Large-diameter borehole is cased and cemented from surface to total depth of ~6000 ft. Cooling is always present with the reliability of gravity, eliminating large- break loss-of-coolant as a credible accident scenario. 40+ Primary Heat Exchanger
Slide 8: Development is already underway
Development is already underway 2 GWe ~6,000 ft. Prototype canister Master Energy Purchase first data acquisition well installation demonstrated Agreement at Great Plains 8
Slide 9: Our goal is speed at scale: from drilling to delivery in months
Our goal is speed at scale: From drilling to delivery in months, not years. 15 MWe 150 MWe 2 GWe 1.5 GWe Targeting six months from Phased deployment of ten 100 reactors on a single site can drilling to delivery for one reactors powers an industrial site. power a hyperscale campus. single NOAK reacto
Slide 10: The most affordable way to build is not to build at all
Conventional Above-Ground Pressurized Water Reactor The most affordable way to build is not to build at all. X Containment Building X Pressurizer X External Backup Power X External Emergency Core Cooling Systems Utility-scale solar is ~7,000 acres per gigawatt. The most recent conventional PWR is ~7
Slide 11: Commercialization target: up to 5 MWe by December 2027
Commercialization 2026: NON-NUCLEAR à Prove it target: up to 5 MWe • Wellbore Engineering by December 2027 • Wide-Diameter Drilling • Feasibility of Design, Construction, Assembly and Installation 2027: NUCLEAR à License it • Safety • Fuel & Supply Chain • Operations & Maintenance 2028: NOAK à Scale
Slide 12: Commercialization Milestones
Commercialization Milestones Regulatory Siting Fuel Construction Commercial Operation Date (COD) Target Completion Date Estimates 2026 2027 2028 S O N D J F M A M J J A S O N D J F M A M J J A NSDA approval Completed Aug 6, 2026 PDSA approval DSA submittal DOE authorization Pilot demonstration NRC l
Slide 13: Youngquist Brothers Collaboration
Youngquist Brothers Collaboration: Youngquist Technology Deep Fission Application Advancement and application of technology and methods for constructing large-diameter Flooded reverse-circulation drilling Borehole sections 30-60 inches diameter. boreholes à Custom large-diameter drill bits Manufactu
Slide 14: Commercial drilling at scale: Financial catalysts and key programs
Commercial 1 Location Customization Optimizing the drilling approach to drilling at scale: site geology to achieve high drill speed (ROP) with limited risk Financial catalysts and 2 Design Evolution Streamlined wellbore architecture key programs and materials drive down cost 3 Rig Management Managem
Slide 15: Build-Own-Operate Business Model
Project-Level Equity Participation For certain projects, we plan to retain an ownership interest in the project company. This would allow us to benefit from project-level cash flows associated with electricity generation and sale over the operating life of the facility, driven by long-term power pur
Slide 16: Illustrative Unit Economics (NOAK): Critical Parameters
Illustrative Unit These reactor-level estimates are solely to illustrate certain internal estimates and assumptions used in developing the Company’s business model and are based on a range of assumptions including, among Economics (NOAK): others, a 40-year design life; that output achieves target le
Slide 17: Leveraging mature supply chain
Leveraging mature supply chain Engineering, Drilling & Procurement, Fuel Manufacturing Engineering Construction Completion Construction Enriched uranium MOU Signed Delivered the Designing the manager for the product (EUP) prototype reactor instrument hub + demonstration procured electronics for reac
Slide 18: The Deep Fission Advantage
The Deep Fission Advantage 01 Proven technology 03 Execution underway 05 Commercial pathway 02 Speed and capital efficiency 04 Modular and scalable 06 Deep bench Ee) vital) e OI = as nN ma = E_. = re _ | — NUTTY
Slide 19: Energy Resilience for All
DeepFission.com Energy Resilience for All