$6.80
$35.15
bear $6.80
base $17.75
bull $35.15
margin of safety $10.50
market price* $15.15
Business condition attached to the margin of safety
Confirmation from at least two consecutive quarterly reports that the Paragon Energy Solutions acquisition is adding to owner earnings after fully-loaded interest and integration costs, rather than being roughly earnings-neutral as the company's own pro forma disclosure for fiscal 2025 suggested.
Mirion Technologies makes the radiation detection, measurement and monitoring equipment used by nuclear power plants, medical radiotherapy providers, defense programs and research labs. It operates two segments - Nuclear & Safety and Medical - selling through decades-long relationships with utilities, government agencies and hospitals in roughly 15 countries, work that typically requires product certifications and long qualification cycles, giving the company real switching-cost protection once it is designed into a customer's site. The business went public through a merger with a special-purpose acquisition company in October 2021. Its first full year afterward, 2022, was a difficult one: a large non-cash writedown of acquired goodwill hit reported earnings, and the company was still working through the cost structure it inherited. Since then the underlying cash generation has improved every year, helped by declining stock-based compensation and by the runoff of amortization tied to the original 2021 merger accounting - both of which are the kind of one-time or wasting items that should not be projected forward at their past size. On December 1, 2025, Mirion closed its largest acquisition to date: Paragon Energy Solutions, a supplier of engineered components for large nuclear power plants and next-generation small modular reactors, for about $588 million. It was funded with a $410 million equity raise and $375 million of long-dated, zero-coupon convertible notes, alongside an existing $400 million convertible note carrying a 0.25% coupon issued earlier in 2025 that was used to pay down higher-cost bank debt. That financing is unusually cheap - both note issues carry a coupon far below what the business could otherwise borrow at - which is a meaningful, quantifiable benefit to shareholders for as long as the notes remain outstanding (into 2030 and 2031). The Paragon deal itself is harder to judge: the company's own disclosure shows that adding a full year of Paragon and a smaller prior acquisition to 2025's results would have raised revenue by roughly $118 million but left net income almost exactly where it already was. We have treated that as a caution flag and assumed only a modest near-term earnings contribution from Paragon in our base case, and none in the bear case, until results demonstrate otherwise. Three cases: the bear case assumes the core business grows slowly, Paragon adds nothing to owner earnings beyond covering its own financing, and the business absorbs the risk that roughly $103 million of contracted backlog tied to sanctioned Russian customers is impaired and that the very cheap financing has to be refinanced at ordinary market rates when it matures. The base case credits the core business with continuing to grow at a mid-to-high single-digit pace, in line with a contracted order book that stood at $1.1 billion at year-end 2025 (up sharply year over year, with about half due to be delivered in 2026), plus a modest contribution from Paragon once fully integrated. The bull case assumes the core business sustains the faster growth it has shown over the past two years and that Paragon delivers the fuller cross-selling benefit management has described, supported by rising demand tied to nuclear power plant life extensions and new reactor construction. After the ten-year forecast, we carry forward only a modest rate of growth, reflecting the durability of Mirion's certified, relationship-based niche rather than any assumption of continued rapid expansion. After valuing the business, we then subtracted what it owes - roughly $1.2 billion of gross debt against about $412 million of cash at year-end 2025 - adjusted down for the unusually cheap financing described above, and further for a modest minority-interest claim from partly owned subsidiaries. That leaves per-share values of about $6.80 in the bear case, $17.75 in the base case and $35.15 in the bull case. Given the leverage taken on for the Paragon deal, the amount of debt that must be refinanced within the next four to six years, and the unresolved question of how much Paragon itself will add to earnings, the margin-of-safety price sits at a meaningful discount to the base-case value, and a higher figure would require the Paragon acquisition to be demonstrably adding to earnings - not just breaking even.